The 39 Clues

The 39 Clues Photo Credits: PART ONE

Cards

Card 1: Front: surveillance camera illustration: Headcase Design/© Scholastic 2008; Back: logo template.

Card 2: Front: “Dan Cahill”: James Levin/© Scholastic 2008, leather: © Digital Textures (RF/CD) via SJI Associates; Back: school line art: © Jyothi N Joshi/Big Stock Photo, letter and file: SJI Associates/© Scholastic 2008, hanging folders: © Christine Balderas/iStockphoto.

Card 3: Front: catacombs drawing: SJI Associates/© Scholastic 2008; Back: logo template.

Card 4: Front: paper: © Slavomir Ulicny/Stock.xchng, list: SJI Associates/© Scholastic 2008, wood background: © Oliver Gruener/Stock.xchng, paper clip: © Josep Altarriba/Stock.xchng; Back: logo template.

Card 5: Front: “George McClain”: © Steve Prezant/Corbis, granite texture: © Manoel Silva/Stock.xchng, wallpaper: © Digital Textures (RF/CD) via SJI Associates; Back: paper: © Sophie/Stock.xchng, coffee mug: © Judi Seiber/Stock.xchng, marble texture: © Photodisc (RF/CD) via SJI Associates.

Card 6: Front: Monticello drawing: Special Collections, University of Virginia Library, compass: © Sandra Caldwell/Shutterstock, pen: © Bonnie Jacobs/iStockphoto, paper: © Max Triet/Stock.xchng; Back: graveyard illustration: Kyle Hotz/© Scholastic 2008.

Card 7: Front: Maria Marapao illustration: Kanako Damerum and Yuzuru Takasaki/© Scholastic 2009; Back: locker and books: © Rob Melnychuk/Digital Vision (RF)/Getty Images, open notebook: © Cris DeRaud/Stock.xchng, notebook: © Jeanell Norvell/iStockphoto, books: © Volkan Ersoy/iStockphoto, sword: © Hemera Technologies/PhotoObjects.net (RF)/Jupiter Images, ninja picture: © AJH Designs/StockXpert, all eskrima sticks: © Gerville Hall/iStockphoto, bolo dagger: © Allen Johnson/iStockphoto.

Card 8: Front: “Ophir Dhupam”: © PhotosIndia (RF)/Getty Images, Bollywood dancers: © DreamPictures/Taxi/Getty Images, Taj Mahal: Courtesy David O'Hanlon/SJI Associates; Back: computer desktop: SJI Associates/© Scholastic 2009, man (re-use): © PhotosIndia (RF)/Getty Images.

Card 9: Front: Harry Houdini: Library of Congress; Back: line art of scale: © Stephen Stacey/Stock.xchng, notebook: © Sophie/Stock.xchng, wood: © Zsuzsanna Kilián/Stock.xchng.

Card 10: Front: Gervais Raoul Lufbery: National Aviation Hall of Fame, lion cub: © LMR Group (RF)/Alamy, goggles: © Titelio/Shutterstock; Back: paper and logo: SJI Associates/© Scholastic 2009.

Card 11: Front: paper: © Niels Timmer/Stock.xchng, oboe: © Stockbyte (RF)/Getty Images, piano: © jjm/Morguefile; Back: window reflection: © Samuel Rosa/Stock.xchng, oboe (re-use): © Stockbyte (RF)/Getty Images, violin: © LastClick/Stock.xchng, both horns: © Damian Searles/Stock.xchng, CDs: © Thomas Lobker/Stock.xchng, gondola: © Daniela Lenarcic/Stock.xchng.

Card 12: Front: Taj Mahal aerial view: © Yann Arthus-Bertrand/Corbis; Back: logo template.

Card 13: Front: Frankenstein illustration: Kent Barton/© Scholastic 2009; book: © Mikhail Lavrenov/StockXpert, wood table: © alxm/StockXpert; Back: logo template.

Card 14: Front: Marie Antoinette illustration: Craig Spearing/© Scholastic 2009, frame: © Sanja Gjenero/Stock.xchng, handmade paper: © Mátyás Huszár/Stock.xchng, easel: © Jared Tolla/Morguefile, board and paint: © Stephen Eastop/Stock.xchng, skull: © avtg/iStockphoto; Back: logo template.

Card 15: Front: gray paper and telegraph paper: © Marija/Stock.xchng, Morse code paper: © Gregory Zamets/Stock.xchng, leather: © Digital Textures (RF/CD) via SJI Associates; Back: hand sending Morse code: © North Wind Picture Archives, book paper: © Roger Kirby/Stock.xchng, leather: © Digital Textures (RF/CD) via SJI Associates, wood: © SalvaBarbera/Stock.xchng.

Card 16: Front: dot pattern: SJI Associates/© Scholastic 2009; Back: logo template.

Card 17: Front: woman: © Stockbyte (RF/CD) via SJI associates, school bus: © Sam Levan / Stock.xchng, computer desktop illustration: © Scholastic 2008; Back: logo template.

Card 18: Front: “Amy Cahill”: James Levin/ © Scholastic 2008; Back: table setting: © Photodisc (RF/CD) via SJI Associates, lined-paper illustration: SJI Associates/© Scholastic 2008.

Card 19: Front: rock formation: © John Foxx /Stockbyte(RF)/Getty Images, tent: © Ali Halit Diker/Stock.xchng, “the Holts”: James Levin/ © Scholastic 2008; Back: line illustration: Kyle Hotz/© Scholastic 2008.

Card 20: Front: mansion: © Wojtek Boss/age fotostock; Symbols: SJI Associates/© Scholastic 2008 Back: paper and background: © Ali Farid/Stock.xchng, paper: © Sophie/Stock.xchng.

Card 21: Front: “Lan Nguyen”: © James Hardy (RF)/age fotostock, graffiti background: © xbauerx/Stock.xchng; Back: stack of paper: © Photodisc (RF/CD) via SJI Associates, letter and envelope: SJI Associates/© Scholastic 2008, splotches: © khz/Shutterstock, woodgrain: © Leszek Maziarz/Shutterstock.

Card 22: Front: boy on skateboard: © JupiterImages (RF)/Alamy, rocket parts © Terry Eaton/Stock.xchng; Back: logo template.

Card 23: Front: “Victor Wood”: © Jupiter Images/Creatas (RF)/Alamy, petri dish: © ImageDJ(RF)/Index Stock/photolibary.com, Clostridium tetani: © Melba Photo Agency(RF)/Index Stock/photolibary.com; Back: cell phone: © scorpion26/iStockphoto, sticky note paper: © Sanja Gjenero/Stock.xchng.

Card 24: Front: “Lilya Chernova”: © Purestock (RF)/Getty Images, party kids: © Odilion Dimier/PhotoAlto (RF)/Getty Images, purse: © Ahmed Aboul-Seoud/Shutterstock, diamond: © Photodisc(RF)/Veer, disco: © Kathryn McCallum/Stock.xchng; Back: PDA: © Gaston Thauvin/Stock.xchng, keyboard: © Tom van Beveren/Stock.xchng,rhinestones: © Kia Abell/Stock.xchng, dress texture: © Digital Textures (RF/CD) via SJI Associates.

Card 25: Front: astronomer royal illustration: Doug Solomon/© Scholastic 2009; apple: © Photodisc (RF/CD) via SJI Associates; Back: star chart: ©Nikolay Staykov/iStockphoto, map: © Visual Language (RF/CD) via SJI Associates.

Card 26: Front and Back: bamboo texture: © Mateusz Atroszko/Stock.xchng, book: © Niels Timmer/Stock.xchng; Front: Marie Curie illustration: Kanako Damerum and Yuzuru Takasaki/© Scholastic 2009; Back: Marie Curie: The Granger Collection, lab glassware: © Zern Liew/Stock.xchng, retro thermometer: © Ula Kapala/Stock.xchng, chemistry flasks: © Jean Scheijen/Stock.xchng.

Card 27: Front: monster: © Hemera Technologies (RF)/Jupiter Images, Loch Ness Castle: © Diane Macdonald/Photographer's Choice (RF)/Getty Images; Back: logo template.

Card 28: Front: building: © Monty Rakusen/Digital Vision (RF)/Veer, mountains: © Martial Colomb/Photographer's Choice (RF)/Getty Images, flag: © DanShirley/Stock.xchng, French flag: © Gaston Thauvin/Stock.xchng, chewing gum: © Jason Smith/Stock.xchng, metal surface: © Deon Staffelbach/Stock.xchng; Back: logo template.

Card 29: Front: ship: © Gary Scott/Stock.xchng, explosion: © Jerry Pank/Stock.xchng, flags: SJI Associates/© Scholastic 2009; Back: old book: © HuanLiu/Stock.xchng, flags: SJI Associates/© Scholastic 2009, metal texture: © Craig Jewell/Stock.xchng.

Card 30: Front: man's face: © Focus Stock Fotografico/UpperCut Images (RF)/GettyImages, turban: © Jupiter Images/Brand X (RF)/Alamy, wood: © Photodisc (RF/CD) via SJIAssociates; Back: logo template.

Card 31: Front: HALO drawing: SJI Associates/© Scholastic 2009; Back: logo template.

Card 32: Front: mechanical sense illustration: Drew Morrison/© Scholastic 2009; Back: logo template.

Card 33: Front: “Saladin”: James Levin/© Scholastic 2008, headband: SJI Associates/©Scholastic 2009, paper wall © Kiriko Shirobayashi/Taxi Japan/Getty Images, large sushi in back: © Robson Oliveira/Stock.xchng, pieces of sushi in front: © Erik Araujo/Stock.xchng, platter: ©PhotoObjects/Jupiter via SJI, tabletop: © Salva Barbera/Stock.xchng, bonsai tree on right: © homero chapa/Stock.xchng, bonsai tree on left: © Claudia Meyer/Stock.xchng, bamboo: © Robson Oliveira/Stock.xchng, border: © Veer Design Essentials (RF/CD) via SJI Associates, fabric background: © Digital Textures (RF/CD) via SJI Associates; Back: inferno illustration: Kyle Hotz/© Scholastic 2009.

Card 34: Front: “Alistair Oh”: © Royalty-Free/Rubberball, body and hair: © Brand X (RF)/Veer, Harvard building: © JamesLemass/Index Stock/photolibrary.com car: © Brad Wieland/iStockphoto, diploma: © Cheryl Graham/iStockphoto; Back: letter and envelope: SJI Associates/© Scholastic 2009, mail stack: © Photodisc (RF/CD) via SJI Associates, Harvard logo: Harvard website via SJI Associates,leather background: © Photodisc (RF/CD) via SJI Associates.

Card 35: Front: Hope diamond: © Bolton Picture Library/Bridgeman Art Library; Back: wood tabletop: © Salva Barbera/Stock.xchng, Section 7 logo: SJIAssociates/© Scholastic 2009.

Card 36: Front: passport: © Scholastic 2009; Back: passport stamp: © John Sigler/iStockphoto, other passport stamps: SJI Associates/©Scholastic 2009.

Card 37: Front: Tavernier illustration: Douglas Smith/© Scholastic 2009, scroll: © Davide Guglielmo/Stock.xchng; Back: diamond: © Norbert Millauer/ddp,file folder: © Feng Yu/Shutterstock, ballpoint pen: © Antonio Jiménez Alonso/Stock.xchng, woodgrain: © Elvis Santana/Stock.xchng, paper clip: © Al Johnson/Stock.xchng.

Card 38: Front: tattoo illustration: Regine Gonzalez/© Scholastic 2009, man's back: © DAJ (RF)/Getty Images, alley: © Thorsten Rust/Shutterstock; Back: logo template

Card 39: Front: “Gordon Klose”: © Photodisc (RF)/Getty Images; Back: passport contents: SJI Associates/© Scholastic 2009; Front and Back: Section 7 logo: SJI Associates/© Scholastic 2009.

Card 40: Front: “Alana Flores”: © Tom Legoff/Digital Vision (RF)/Veer, trophy: © Tomasz Szkopiski/Stock.xchng, horizontal plaque (both uses): © Kenn Kiser/Morguefile, vertical plaque (both uses): © Ben Turner/Morguefile; Back: girl crying: © Steven Puetzer/Iconica/Getty Images, newspaper: © Kathryn McCallum/Stock.xchng, chess piece: © Emanuele Vezzaro/Stock.xchng.

Card 41: Front: man: © Stewart Charles Cohen/Photodisc (RF)/Getty Images, fire: © Photodisc (RF/CD) via SJI Associates, paper: © Roger Kirby/Stock.xchng, St. Basil's: © Dean Conger/Corbis; Back: paper and bulletin board: SJI Associates/© Scholastic 2009.

Card 42: Front: “Ching Shih”: © Alex Mares-Manton/Getty Images; Front and Back: body: © Candela Foto Art/Kreuziger/Getty Images, paper: © Effinity Stock Photography/iStockphoto, sword: © Candela Foto Art/Kreuziger/Getty Images, wood: © Photodisc (RF/CD) via SJI Associates.

Card 43: Front: Enigma machine: © LittleJoe/openstockphotography.org, paper: SJI Associates/© Scholastic 2009; Back: Bletchley Park: courtesy Matt Crypto/openstockphotography.org, foreground car: © Stefan K./Stock.xchng, car and motorcycle: © Art Explosion(RF/CD) via SJIAssociates.

Card 44: Front: Salem witches illustration: Craig Spearing/© Scholastic 2009; Back: logo template.

Card 45: Front: pen: © Dale Eurenius/Stock.xchng, radio: © Klaus Post/Stock.xchng; Back: men in alley: © ckdj/zefa (RF)/Corbis.

Card 46: Front: fist: © Michael Schwab/Digital Vision (RF)/Getty Images, ring: © Malina/Stock.xchng; Back: rings: © Malina/Stock.xchng, vial:Index Stock (RF)/photolibrary.com, skull and crossbones: © excape25/iStockphoto, black powder: © Daniele Musella/Morguefile,red and green powder: © Trine de Florie/Stock.xchng.

Card 47: Front: snake charmer illustration: Craig Spearing/© Scholastic 2009; Back: logo template.

Card 48: Front: newspaper: © Rob Byron/Shutterstock, magic box illustration: SJI Associates/© Scholastic 2009; Back: logo template.

Card 49: Front: “Paul Addison”: © Stock4B (RF)/Getty Images, fence: © Carlos Butler/Stock.xchng, Loch Ness countryside: © Photodisc (RF/CD) viaSJI Associates; Back: computer: © Emre Nacigil/Stock.xchng, computer desktop screen: SJI Associates/© Scholastic 2009, marker: © Judi Seiber/Stock.xchng, monster (re-use): © Hemera Technologies/PhotoObjects (RF)/Jupiter Images, castle (re-use): © Diane Macdonald/Photographer's Choice (RF)/Getty Images.

Card 50: Front: “Heinrich Heinrichson”: © Rob Lewine/Image Source (RF)/Getty Images, hands: Photodisc (RF/CD) via SJI Associates; Back: Eiffel Tower: © Alexander Hafemann/iStockphoto, monster (re-use): © Hemera Technologies (RF)/Jupiter Images, castle (re-use): © Diane Macdonald/Photographer's Choice (RF)/Getty Images, metal texture: ©Photodisc (RF/CD) via SJI Associates, receipt and graph paper: © Sophie/Stock.xchng, sticky note: © Sanja Gjenero/Stock.xchng, list paper: © Gregory Zamets/Stock.xchng.

Card 51: Front: Ederle: © AP/Wideworld, swimming cap: © Royalty-Free/Masterfile, towel: © Royalty-Free/Masterfile; Back: Ederle illustration: DougSolomon/© Scholastic 2009, newspaper: © Greg Paris/Morguefile, teacup: © Kay Pat/Stock.xchng.

Card 52: Front: Annie Oakley: The Granger Collection, target: © Photodisc (RF/CD) via SJI Associates; Back: Kaiser: The Granger Collection, target: ©Photodisc (RF/CD) via SJI Associates.

Card 53: Front: “the Holts”: James Levin/© Scholastic 2008, Alcatraz: © John Foxx/Stockbyte(RF)/Getty Images, wood pier: © Terraxplorer/iStockphoto, leather texture: Photodisc (RF/CD) via SJI Associates; Back: logo template.

Card 54: Front: map: courtesy University of Texas, sign and post: © Jack Sanders/Stock.xchng, mountains: © Rita Mezzela/Stock.xchng, front and left dogsled: © Ingram/Superstock (RF)/Alamy, middle dog sled: © Visions of America (RF)/Alamy; Back: logo template.

Card 55: Front: guy left: © Suzanne Tucker/Shutterstock, guy center, guy right, and all jackets: © Vova Pomortzeff/Shutterstock, jewelry: © Erich Lessing/Art Resource, web browser illustration: SJI Associates/© Scholastic 2009; Back: logo template.

Card 56: Front: comic book illustration: Bill Sienkiewicz/© Scholastic 2009; fabric texture: Digital Textures (RF/CD) via SJI Associates; Back: guard: ©Blue Jean Images (RF)/Getty Images, embassy: © Hola Images (RF).

Card 57: Front: building: © Michael Mohr/PhotoAlto (RF)/Getty Images; Back: chalk board and chalk: © Piotr Lewandowski/Stock.xchng, slate: © Sophie/Stock.xchng, brick wall: © Lars Sundstrum/Stock.xchng.

Card 58: Front: main stars: © Stocktrek Images (RF)/Getty Images, background stars: © Shaun Lowe/iStockphoto, Milky Way: © Stephan Hoerold/iStockphoto, iceberg, ocean, and sky: © Photodisc (RF/CD) via SJI Associates; Back: brown background: Digital Textures (RF/CD) via SJI Associates, constellations illustration: SJI Associates/© Scholastic 2009.

Card 59: Front: plane and landscape: © Morocco Flowers/photolibrary, “young Grace”: courtesy Private Collection, flight jumpsuit: © Colin Anderson/Blend Images (RF)/Getty Images, map: © Visual Language (RF/CD) via SJI Associates; Back: bedroom: SJI Associates/© Scholastic 2009, plane and landscape (re-use): © Morocco Flowers/Index Stock/photolibrary.com, “young Grace” (re-use): courtesy Private Collection, flight jumpsuit (re-use): © Colin Anderson/Blend Images (RF)/Getty Images.

Card 60: Front: X-ray: © Photodisc (RF/CD) via SJI Associates, chip: © Sam Radion/Stock.xchng; Back: logo template.

Card 61: Front: carnival illustration: Robert Hunt/© Scholastic 2009; frame: © Antique Frames Collection (RF/CD) via SJI Associates; Back: logo template.

Card 62: Front: dashboard andtrees: © Garann Rose Means/Stock.xchng, clouds: © Photodisc (RF/CD)via SJI Associates, road sign: © Elvis Santana/Stock.xchng, cow: ©Gary Scott/Stock.xchng, scattered papers: SJI Associates/©Scholastic 2009; Back: paper: SJI Associates/© Scholastic2009.

Card 63: Front: ghost ship: ©Elizabeth Porter/Stock.xchng, stormy sky: © SimonaDumitru/Stock.xchng, sail: © Waylett21/Stock.xchng, stormy water: ©Dani Simmonds/Morguefile; Back: logo template.

Card 64: Front: Mt. Rushmore:© Visions of America/Joe Sohm (RF)/Getty Images, letters: © NaurisMozolevs/Stock.xchng, postcard: © Cecilia Picco/Stock.xchng; Back:stamp: US Postal Service, postcard: © Cecilia Picco/Stock.xchng.

Card 65: Front: Rumpelstiltskin illustration: Kent Barton/© Scholastic 2009; book: ©Sophie/Stock.xchng, lined paper: SJI Associates/© Scholastic 2009,wood table: © Oksana Struk/iStockphoto; Back: brown paper: ©Roger Kirby/Stock.xchng, alchemist symbols: Public Domain.

Card 66: Front: brush: © JudiSeiber/Stock.xchng, file folder: © Feng Yu/Shutterstock, PDA: SJIAssociates/© Scholastic 2009; Back: logo template.

Card 67: Front: subway map:1939 New York City Subway Map courtesy of New York Transit Museum andused with permission; Back: logo template.

Card 68: Front: hideawayillustration: Sophie Kittredge/© Scholastic 2009; wood: © DaniSimmonds/Stock.xchng; Back: logo template.

Card 69: Front: coin edge: ©Duncan Walker/iStockphoto, Roman face: © Leah-AnneThompson/iStockphoto; Back: logo template.

Card 70: Front: stack ofbills: © Christine Balderas/iStockphoto; Back: logo template.

Card 71: Front: gold bar: ©Sebastian Kaulitzki/iStockphoto; Back: logo template.

Card 72: Front: family crests:SJI Associates/© Scholastic 2009, sphere: © MahmoudHafez/iStockphoto; Back: logo template.

Card 73: Front: light: © Duncan Walker/iStockphoto, grid: SJIAssociates/© Scholastic 2009; Back: logo template.

Card 74: Front: “IrinaSpasky”: James Levin/© Scholastic 2008, paper: ©spekulator/Stock.xchng, corkboard: © Cris DeRaud/Stock.xchng, thumbtacks: © Hannah Boettcher/Stock.xchng; Back: picture ofchild: © Andrew Zimmerman, Red Sqaure: © LukyanovMikhail/Shutterstock, photo paper: © Slavomir Ulicny/Stock.xchng,dart: © Veer, lipstick: © Veer, poison vials: ©PhotoObjects/Jupiter via SJI Associates, apple: © Photodisc (RF/CD)via SJI Associates, glasses: © Photodisc (RF/CD) via SJI Associates,ant: © Photodisc (RF/CD) vis SJI Associates, KGB Medal: © dmitrypoliansky/Stock.xchng, lens: © PhotoObjects/Jupiter via SJIAssociates, shutter release: © PhotoObjects/Jupiter via SJIAssociates, metal case: © PhotoObjects/Jupiter via SJI Associates,needle: © PhotoObjects/Jupiter via SJI Associates, globe: ©PhotoObjects/Jupiter via SJI Associates.

Card 75: Front: sand: ©Silvia Cosimini/Stock.xchng, book: SJI Associates/©Scholastic 2009, desert dune: © Alessio Ponti/Shutterstock,Cairo: © Daryl Benson/Getty Images, camel: © irabel8/Shutterstock,ornament: © Yali Shi/Stock.xchng, postcard: © SlavomirUlicny/stock.xchng; Back: boats on water: © NationalGeographic Society, sand: © Silvia Cosimini/Stock.xchng.

Card 76: Front: Myrrh Treeillustration: Cynthia Von Buhler/© Scholastic2009 ; Back: logo template.

Card 77: Front: Budapest: ©Jozef Sedmak/Shutterstock, “Natalie and Ian Kabra”: James Levin/©Scholastic 2008 ; Back: logo template.

Card 78: Front: Sakhet statue:© Erich Lessing/Art Resource, room: © Matin Dadfar/Stock.xchng;Back: woman running illustration: KyleHotz/© Scholastic 2009.

Card 79: Front: DavidLivingstone illustration: Bruce Hutchinson/© Scholastic 2009, paper:SJI Associates/© Scholastic 2009, globe: © PhotoObjects/Jupiter viaSJI Associates, hat: © PhotoObjects/Jupiter via SJI Associates;Back: David Livingstone illustration: Bruce Hutchinson/©Scholastic 2009, bottle: © PhotoObjects/Jupiter via SJI Associates,Victoria Falls: © Sara Correia/Stock.xchng.

Card 80: Front: billboardbackground: © Judith Collins (RF) /Alamy, “Jonah Wizard”: JamesLevin/© Scholastic 2008, Jonah art: © Scholastic 2009; Back: letter: ©Scholastic 2009.

Card 81: Front: “Leslie D.Mill”: © Joshua Ets-Hokin (RF) /Getty Images, snap board: SJIAssociates/© Scholastic 2009, corkboard: SJIAssociates /© Scholastic 2009 ;Back: storyboard illustration: AndresVera Martinez/© Scholastic 2009.

Card 82: Front: “JaneCahill” illustration: Anna and Elena Balbusso/© Scholastic 2009 ; Back: paper and inkwell: ©akva/Shutterstock, sheet music: © Scholastic2009.

Card 83: Front: Henry MortonStanley: © Hulton Archive/Getty Images, binoculars: ©PhotoObjects/Jupiter via SJI Associates, case: ©PhotoObjects/Jupiter via SJI Associates, wood: © CraigJewell/Stock.xchng; Back: owl and border: © Art Explosion(RF/CD) via SJI Associates.

Card 84: Front: NeuschwansteinCastle: © Robert Harding/Digital Vision (RF)/Getty Images; Back:clipboard: © Photodisc (RF/CD) via SJI Associates, crown: courtesyDover Publications, wood grain: © Oksana Struk/iStockphoto.

Card 85: Front: John Keatstomb: © Alinari Archives/The Image Works; Back: logo template.

Card 86: Front: bookcase: ©Image Source (RF)/Jupiter Images, brass plaque: © StockXpert, globe:© Photodisc (CD/RF) via SJI Associates; Back: logo template.

Card 87: Front: lake: ©Andrew Lincolne/Stock.xchng, spy pigeon: © Deutsches Museum; Back: logo template.

Card 88: Front: wood: ©Oliver Gruener/Stock.xchng, abandoned house: © Paul Edmonton/GettyImages; Back: abandoned house: © Paul Edmonton/Getty Images.

Card 89: Front: car hood: ©Andrew Beierle/Stock.xchng, splat: © despo P./ Stock.xchng, paper: ©Jan Flaska/Stock.xchng; Back: car hood: © AndrewBeierle/Stock.xchng.

Card 90: Front: ID badge: ©Scholastic 2009, “Hamilton Holt”: James Levin/© Scholastic 2008; Back: boardroom: © Abdulhamid Fadhly/Stock.xchng, laptop: ©ArchMan/Shutterstock.

Card 91: Front: LeninMausoleum: © Bruno Ehrs/Getty Images, Kremlin illustration: KyleHotz/© Scholastic 2009.

Card 92: Front: SimónBolívar: © Hulton Archive/Getty Images, plaque: © MarcDietrich/Shutterstock; Back: Pantheon: © Marion Kaplan/Alamy.

Card 93: Front: Amberroom Catherine Palace: © BildarchivPreussischer Kulturbesitz/Art Resource; Back: logo template.

Card 94: Front: Grand DuchessAnastasia: Library of Congress; Back: paper: © Effinity StockPhotography / iStockphoto, bird crest: public domain, fingerprintsblood: © Scholastic 2009, paper strip with message: ©Marija/Stock.xchng.

Card 95: Front: letter andpaper: SJI Associates/© Scholastic 2009; Back: logo template.

Card 96: Front: freezer withbox: © Hisham Ibrahim (RF)/Alamy, package burrito: © IwonaGrodzka/Shutterstock, “Alistair Oh”: James Levin/© Scholastic 2008; Back: children: courtesy DavidJacobs Photography , wood: © Salva Barbera/Stock.xchng.

Card 97: Front: “Yasmeen Badawi”: © Grapheast (RF)/Alamy, robothead: © PhotoObjects/Jupiter via SJI Associates, wires from robothead: © PhotoObjects/Jupiter via SJI Associates, wires and detailsof robot body: © PhotoObjects/Jupiter via SJI Associates, needlenosepliers: © PhotoObjects/Jupiter via SJI Associates, spools of wireand solder: © PhotoObjects/Jupiter via SJI Associates, cables 1 and2: © PhotoObjects/Jupiter via SJI Associates, broken electronics onbench: © PhotoObjects/Jupiter via SJI Associates, circuit boardnameplate: © PhotoObjects/Jupiter via SJI Associates, robot body: ©Michal Zacharzewski/Stock.xchng, wires and details of robot body: ©Jonathan Beauchamp/Stock.xchng, wires and details of robot body: ©Gerla Brakkee/Stock.xchng, wires and details of robot body: © MaciejMichal Mikolaj Satchowiak/Stock.xchng, wires and details of robotbody: © lily rosen/Stock.xchng, screwdriver: © owaiskhan/Stock.xchng, bench: © Laser/Stock.xchng, background board withhanging tools: © Thom W/Stock.xchng; Back: robot dogillustration: Headcase Design/© Scholastic 2009.

Card 98: Front: Illustration of Edison: KanakoDamerum and Yuzuru Takasaki/© Scholastic 2009, background: ©Mateusz Atroszko/Stock.xchng, book: © Niels Timmer/Stock.xchng;Back: background: © Mateusz Atroszko/Stock.xchng, book: ©Niels Timmer/Stock.xchng, Edison (Figure 1) and lightbulb: U.S.Department of the Interior, National Park Service, Edison NationalHistoric Site via Scholastic Library, illustration (Figure 2): ©Eric Westbrook/Stock Illustration (RF)/Getty Images.

Card 99: Front: “Katherine Cahill” illustration: Anna and ElenaBalbusso/© Scholastic 2009; Back:candlestick holder and letter opener: ©PhotoObjects/Jupiter via SJI Associates, tabletop: © KrissSzkurlatowski/Stock.xchng, paper: © Cris DeRaud/Stock.xchng.

Card 100: Front: building: © The New York Public Library/ArtResource, NY; Back: logo template.

Card 101: Front: helicopter: © Stephen Power (RF)/Alamy, Cairo: ©Comstock Images (RF) /Jupiter Images; Back: logo template.

Card 102: Front: boat illustration: Bill Graham/© Scholastic 2009, room: © weatherbox/Stock.xchng, insidecomputer: © Wayne C./Stock.xchng, technical drawing: © sanjagjenero/Stock.xchng, Victoria Falls: © Sara Correia/Stock.xchng,gears: © Jan Roger Johannesen/Stock.xchng; Back: logo template.

Card 103: Front: letterhead: SJI Associates/© Scholastic 2009; Back: logo template.

Card 104: Front: King Ludwig: © akg-images/Image Works; Back: logo template.

Card 105: Front: HAHO illustration: SJI Associates/© Scholastic 2009;Back: logo template.

Card 106: Front: Nicola Tesla illustration: KanakoDamerum and Yuzuru Takasaki / © Scholastic 2009, greencircuit board: © iOfoto/Cutcaster, lightbulb: © Photodisc (CD/RF)via Scholastic Library, book: © NielsTimmer/Stock.xchng, bamboo texture: © Mateusz Atroszko /Stock.xchng, back: dagger: © Olemac/Shutterstock, paper: ©Igor Bliznyuk/Shutterstock.

Card 107: Front: “young Irina Spasky”: © OleksiyMaksymenko (RF)/Alamy, passport stamp: © Scholastic 2009; back:pole vaulter stamp: © raclro/iStockphoto, athlete silhouette: ©Nebojsa I/Shutterstock, award: © Glen Jones/Shutterstock, medal andcolor ribbon: © akva/Shutterstock, marble: © Photodisc (CD/RF) viaSJI Associates.

Card 108: Front: starfish: © Desislava Dimitrova/Cutcaster, paper: © StephenRees/Cutcaster, sandals on beach: © SV Lumagraphica/Cutcaster; Back: logo template.

Card 109: Front: airplanes: © Alloy Photography (RF)/Veer,flying lemur logo: Charice Silverman/© Scholastic 2009; Back: logo template.

Card 110: Front: Taipan snake: © Jason Edwards (RF)/NationalGeographic; Back: logo template.

Card 111: Front: Anak Krakatau: © Ed Wray/AP Photo; Back:inferno illustration: Kyle Hotz/© Scholastic 2009.

Card 112: Front: badge: © Marc Dietrich/Shutterstock, “NatalieKabra”: James Levin/© Scholastic 2008, spoon: © AlexanderKalina/Shutterstock, crown: © Art Explosion (CD/RF); Back:PDA (re-use): © Gaston Thauvin/Stock.xchng, keyboard (re-use): ©Tom van Beveren/Stock.xchng.

Card 113: Front: “Chrissy Collins”: © Photodisc (RF)/Veer,football players: © Digital Vision (RF)/Veer, football field: ©Darrin Klimek (RF)/Getty Images, crowd: © CezarPerelles/Stock.xchng, megaphone: © Photodisc (CD/RF) via SJI,pompoms: © Photodisc (CD/RF) via SJI; Back: “ChrissyCollins”: © Photodisc (RF) /Veer, building: © Idea22/Stock.xchng.

Card 114: Front: stamp background: © Flavia Morlachetti/Shutterstock,illustration: Laszlo Kubinyi/ © Scholastic 2009; Back: wood:© Oksana Struk / iStockphoto, letterhead: SJI Associates/©Scholastic 2009, paper: © Julian Leandro Irusta/Stock.xchng, check:SJI Associates/© Scholastic 2009, borders on check: ©Graphic frames/Pepin Press.

Card 115: Front: “Luke Cahill” illustration: Annaand Elena Balbusso/© Scholastic 2009; Back: red satinbackground: © Alexpi/Shutterstock, dagger: © TheBoard of trustees of Armouries/Heritage-Images/Image Works.

Card 116: Front: landscape: © slowfish/Shutterstock, jet: © NeilGould/Stock.xchng, sign: © PhotoObjects/Jupiter via SJI Associates,jackrabbit: © Don Schaeffer/Stock.xchng, bolt: © Digital Textures(CD/RF) via SJI Associates; Back: logo template.

Card 117: Front: Eiffel tower: © AbleStock.com (RF)/Jupiter Images;Back: Statue of Liberty: © Tetra Images (RF)/Jupiter Images.

Card 118: Front: gold bars: © Image Source (RF)/PunchStock, eye: ©Craig Jewell/Stock.xchng, metal texture: © ElvisSantana/Stock.xchng, microphone: © PhotoObjects/Jupiter via SJIAssociates, camera: © PhotoObjects/Jupiter via SJI Associates, door:© PhotoObjects/Jupiter via SJI Associates, gate: ©PhotoObjects/Jupiter via SJI Associates, 3 device panels: ©PhotoObjects/Jupiter via SJI Associates, bank vault: © Radius Images(RF)/Alamy; Back: metal (re-use): © ElvisSantana/Stock.xchng.

Card 119: Front: hand and PDA: © Kit Sen Chin/iStockphoto, PDAkeypad: © John Evans/Stock.xchng, airport board: © BladeKostas/iStockphoto, interior airport: © altrendo images/GettyImages; Back: logo template.

Card 120: Front: crown: © The London Art Archive/Alamy; Back: logo template.

Card 121: Front: Napoleon's map: © Bridgeman Art Library, wax seal:SJI Associates/© Scholastic 2009; Back: logo template.

Card 122: Front: “Mateo Sanchez” kicking ball: © RubberBall (RF)/Alamy, soccer ball: © PhotoObjects/Jupiter via SJI Associates,stadium crowd: © Cezar Perelles/ Stock.xchng, camouflage background:© Digital Textures (CD/RF) via SJI Associates; Back: soccerball (re-use): © PhotoObjects/Jupiter via SJI Associates, shoe: ©Corbis Photography (RF)/Veer.

Card 123: Front: medallion: © PhotoObjects/Jupiter via SJIAssociates, snow scene: © jede hoog/Stock.xchng, “Reagan Holt”:James Levin/© Scholastic 2008; Back: weights: ©PhotoObjects/Jupiter via SJI Associates, ballet shoes: ©esilenna/Stock.xchng, hand gripper: © takiskolokotronis/Stock.xchng.

Card 124: Front: “Thomas Cahill” illustration: Anna and ElenaBalbusso / © Scholastic 2009; Back: compass: Musee Nationalde la Renaissance, Ecouen, France/Giraudon/The Bridgeman Art LibraryInternational.

Card 125: Front: comic book illustration: Miracle Brothers/ ©Scholastic 2009, comic book background: SJI Associates/© Scholastic 2009, leather background: © Perkus/Shutterstock; Back: paperand wood: © magicinfoto/Shutterstock, stagecoach: © art explosionclip art.

Card 126: Front: Victoria Falls: © Photos.com (RF)/Jupiterimages;Back: logo template.

Card 127: Front: Mt Fuji: © Jon Arnold Images Ltd/Alamy, isolatedsign: © XAOC/Shutterstock, ice pavilion: © syagci/iStockphoto;Back: logo template.

Card 128: Front: Alcatraz Island lighthouse: © PattieSteib/Shutterstock; Back: logo template.

Card 129: Front: wall art: © Art Explosion and © Illustrator CS3clip art, man: © Elena Slastnova/iStockphoto,tattooing: ©Dmitriy Kalinin/iStockphoto; Back: Victoria Falls: © JamesScully/iStockphoto, woman: © Trinette Reed (RF)/Getty Images.

Card 130: Front: building: © Frederic Cirou (RF)/Getty Images,climber: © Image Source (RF)/Getty Images, streets and buildingtops: © Bertrand Demee/Getty Images; Back: logo template.

Card 131: Front: shuriken: SJI Associates / © Scholastic 2009. Back:nunchucks: © Jason Pacheco (RF)/Alamy.

Card 132: Front: portrait of Abigail Adams: © Stock Montage /GettyImages, bronze plate: © David Stern/Stock.xchng, flashlight: ©Andrzej Pobiedzinski/Stock.xchng, hand: © PhotoObjects/Jupiter viaSJI Associates; Back: letter opener: © PattieSteib/iStockphoto, paper: © digitalife/Shutterstock, wood: © GordHorne/iStockphoto.

Card 133: Front: “Grace Cahill”: James Levin/© Scholastic 2008,stone wall:© Stefan Vasilev/Stock.xchng, paper: © JamieWoods/Stock.xchng, ivy: © Photodisc (CD/RF) via SJI Associates;Back: checks: SJI Associates/© Scholastic 2009, wood: ©Oliver Gruener/Stock.xchng.

Card 134: Front: landscape: © 2265524729/Shutterstock, stealth plane: © GettyImages; Back: logo template.

Card 135: Front: ghost town: © Visions ofAmerica (RF) /Getty Images,figurine, phone, fish bowl, and TV set © Photodisc (CD/RF) via SJIAssociates; Back: figurine, phone, fish bowl, TV set andjacks: © Photodisc (CD/RF) via SJI Associates.

Card 136: Front: ground: © Photodisc (CD/RF) via SJI Associates,goggles: SJI Associates / © Scholastic 2009; Back: men: ©Image Source/Getty Images and © James Lauritz /Getty Images.

Card 137: Front: paper: © marija/Stock.xchng, footprint: © AngelaFarley/Shutterstock, Massachusetts seal: SJI Associates/© Scholastic2009, border: © Photodisc (RF/CD) via SJI Associates, sticky note: ©Sanja Gjenero/Stock.xchng; Back: logo template.

Card 138: Front: nail polish: © Liz Bogus/Stock.xchng, shelves andnail polish © PhotoObjects/Jupiter via SJI Associates, hand: GeorgeDoyle (RF)/Getty Images, shelves: © PhotoObjects/Jupiter via SJIAssociates; Back: logo template.

Card 139: Front: thumbprint: SJI Associates / © Scholastic 2009;Back: logo template.

Card 140: Front: “Saladin”: James Levin/© Scholastic 2008, roominterior: © Photodisc (CD/RF) via SJI Associates, metal texture: ©Digital Textures (CD/RF) via SJI Associates, fan: © Hugo HumbertoPlácido da Silva/Stock.xchng, screw: © sanja gjenero/Stock.xchng,grate, booties, belt, lens and headset: © PhotoObjects/Jupiter viaSJI Associates; Back: logo template.

Card 141: Front: Petra: © Holger Mette/Shutterstock; Back: logo template.

Card 142: Front: gold bar: © Sebastian Kaulitzki/iStockphoto; Back: logo template.

Card 143: Front: light: © Duncan Walker/iStockphoto, grid: SJI Associates /©Scholastic 2009; Back: logo template.

Card 144: Front: sphere: © Mahmoud Hafez/iStockphoto; Back: logo template.

Card 145: Front: military troop: © Joseph Luoman / iStockphoto,sweatpants and sneakers: James Levin/© Scholastic 2008, clipboard,whistle, and pencil: © Feng Yu/Shutterstock, pictures: ©CGTextures, metal base: © CGTextures; Back: folder andpapers: SJI Associates/© Scholastic 2009, file folders: © StephenCoburn/Shutterstock.

Card 146: Front: Shaka Zulu portrait: Private Collection/© Look andLearn/Bridgeman, bamboo: © Nirdesha Munasinghe/Shutterstock, wood: ©CGTextures; Back: Zulu warriors: © TopFoto/Image Works, paperand background texture: © Bairachnyi Dmitry/Shutterstock, wax seal:© bhathaway/Shutterstock.

Card 147: Front: “Jonas Wizard” :James Levin/© Scholastic 2008, large penguins: © Jan WillFotografie/iStockphoto, small penguin: © Photodisc (RF/CD)/via SJIAssociates, gold chain: © Scott Rothstein/Shutterstock, hood: ©princessdlaf/iStockphoto, Auroral arc: © Romko_chuk /iStockphoto;Back: logo template.

Card 148: Front: wood sign: © scol22/Shutterstock, Photodisc(RF/CD)/via SJI Associates, gray wood: © CGTextures, painted wood:Photodisc (RF/CD)/via SJI Associates; Back: logo template.

Card 149: Front: prison: © Huw Jones/Alamy, cat: James Levin/ © Scholastic 2008; Back: Men on horsesillustration: Kyle Hotz /© Scholastic 2010.

Card 150: Front: “Irina Spasky” :James Levin/© Scholastic 2008, paper: © Scholastic 2010, metalplate: © CGTextures; Back: logo template.

Card 151: Front: “Sophie Watson”: James Levin/© Scholastic 2008,ballerina: © Rubberball (RF) /Jupiter Images, ticket: SJIAssociates/© Scholastic 2009, multi-color lights: © GaryMcCord/Stock.xchng, curtain: © Photodisc (RF/CD) / via SJIAssociates; Back: girl: James Levin/© Scholastic 2008, paper:© MaX Triet/Stock.xchng.

Card 152: Front: “Cora Wizard”: © Fancy Photography(RF) /Veer,art gallery background: SJI Associates/© Scholastic 2009,colorization illustration: Charice Silverman / © Scholastic 2009;Back: ticket: © Pertusinas/Shutterstock, paintbrush: ©pcatalin/iStockphoto, background oil painting: © DonTavo/iStockphoto.

Card 153: Front: “Broderick Wizard”: © Dynamic Graphics(RF)/Jupiter Images, Venice: © Seet/Shutterstock; Back: Cellphone illustration: © Scholastic 2009.

Card 154: Front: Emperor Maximilian: Library of Congress; Back:Hapsburg regalia: © London Art Archive/Alamy, magnifying glass: ©Dino Ablakovic/iStockphoto.

Card 155: Front: Antarctic glacier: © Armin Rose/Shutterstock, radarscreen: © Kuttly/Shutterstock; Back: logo template.

Card 156: Front: Hollywood illustration: Art Zendarksi/© Scholastic2009; Back: logo template.

Card 157: Front: desert: © Anton Foltin/Shutterstock, bowler hat: ©Heath Doman/Shutterstock, Ambrose Bierce portrait: Library ofCongress, torn paper: © Dorota Kaszczyszyn/Stock.xchng, note: ©skodonnell/iStockphoto, wood and metal: © Kym McLeod/Stock.xchng,vintage scrap: © Billy Alexander/Stock.xchng; Back: logo template.

Card 158: Front: prisoner graffiti: The Board of Trustees of theArmouries/Heritage-Images/ImageWorks; Back: logo template.

Card 159: Front: decorated pillar: © akg-images/Gerard Degeorge/TheImage Works; Back: logo template.

Card 160: Front: Walter Raleigh illustration: © Laszlo Kubinyl/©Scholastic 2009; Back: logo template.

Card 161: Front: figurine illustration: John MacNeill/© Scholastic2010,lollipop: © Kameel4u/Shutterstock, “JonahWizard”: James Levin/© Scholastic 2008, metal background: ©CGTextures; Back: paper and wood: © CGTextures, pencils: ©Scholastic 2010.

Card 162: Front: Mt. Everest: © Pichugin Dmitry/Shutterstock, iceclimbing: © Paul Morton/iStockphoto, spacesuit: © NASA, man: JamesLevin/© Scholastic 2008. Back: logo template.

Card 163: Front: laptop: © Alexander Kalina/Shutterstock, neon signs:© Thor Jorgen Udvang/Shutterstock, window frame and fabric: ©CGTextures, Chinese food: © Scholastic(RF/CD), dragon, skull and crossbones: © Art Explosion. Back: logo template.

Card 164: Front: terracotta warriors: © Ke Wang/Shutterstock, boy:James Levin/© Scholastic 2008. Back: logo template.

Card 165: Front: prison: © Rich LaSalle/Getty Images, figures: JamesLevin/© Scholastic 2008. Back: logo template.

Card 166: Front: George Mallory: © The GrangerCollection, coiled rope: © Mazzzur/Shutterstock, carabiners andrope: © Eric Strand/Shutterstock. Back: bottle,background and liquid: © luchschen/Shutterstock, snow: ©CGTextures, clouds: © Scholastic 2010.

Card 167: Front and Back: oak tree: © Frank Krahmer (RF)/GettyImages, wooden porch deck: © Matt Willmann/Stock.xchng, ladder: ©Benjamin Earwicker/Stock.xchng; “Devin Cooper”: © Digital Vision(RF) / Veer, spiral staircase: © gulfimages (RF)/Getty Imagestreehouse: © Leire Castillo/Stock.xchng, helicopter: © JeremyDoorten/Stock.xchng, antenna tower: © Rodolfo Belloli/Stock.xchng,airport control tower: © Photodisc (RF/CD) via SJI Associates; Back:newspaper: © Iwona Grodzka/Shutterstock, black army boots: ©blinow61/Shutterstock, child hanging from cloth: © StudioFoxy/Shutterstock, two black winter boots: ©6493866629/Shutterstock.

Card 168: Front: Korean wall: © Ablestock/Alamy, graffiti: OwenBrozman/© Scholastic 2009; Back: paper texture: © digitaltextures (RF/CD) via SJI Associates, paper clip: © Object ofBusiness (RF/CD) via SJI Associates.

Card 169: Front: “Teodora Kosara”: Deb Cohn-Orbach/© Scholastic2009, cathedral: © Mixmike/iStockphoto, building: © CGTextures,fireworks: © Art Explosion (RF/CD) / via SJI Associates, dynamite: ©Veer design essentials (RF/CD)/via SJI Associates, timer: ©Photodisc (RF/CD)/via SJI Associates; Back: paper: © DebCohn-Orbach, matches: © Photodisc (RF/CD)/via SJI Associates, filefolder: © Photodisc (RF/CD)/via SJI Associates, wood desk: © DebCohn-Orbach.

Card 170: Front: Thomas Edward Lawrence: © The Granger Collection,wood: © CGTextures; Back: T. E. Lawrence on motorcycle: ©Mary Evans/Image Works, map of Arabia ca 1870: North Wind PictureArchive, pen: © Phant/Shutterstock, folders (re-use): © FengYu/Shutterstock, textured paper: © Najin/Shutterstock, papers: ©Scholastic 2009, crumpled paper (re-use): SJI Associates/ ©Scholastic 2009, photo album: © CGTextures, wood: © CGTextures.

Card 171: Front: shadow of camels on sand: © David Felsen; Back: logo template.

Card 172: Front: people in museum: © VOJTa Herout/Shutterstock,illustration: Scholastic 2009; Back: logo template.

Card 173: Front: Rosetta Stone: © World History Archive, museumdisplays: © Kheng Guan Toh/Cutcaster, book: © PabloCaridad/Cutcaster, palm trees: © European Travel (RF/CD) via SJIAssociates; Back: logo template.

Card 174: Front: cane illustration: Collin Hayes/© Scholastic 2009;Back: logo template.

Card 175: Front: tree: © STILLFX/iStockphoto, cockroach: © ConnieWade/Shutterstock, stag beetle: © Gordana Sermek/Shutterstock, housefly: © Raymond Kasprzak /Shutterstock, yellow-black buttefly: ©Holger W./Shutterstock, red ant: © Ziutograf/iStockphoto, redbeetle: © Antagain/iStockphoto; Back: logo template.

Card 176: Front: top penny: © Brian Weed/Shutterstock, eye cameralens: CGTextures, ear microphone: CGTextures, scattered backgroundpennies: © Ambient Ideas/Shutterstock; Back: logo template.

Card 177: Front: ice sculpture illustration: John MacNeill/©Scholastic 2009, banqueting table: © Johnny Greig UK/Alamy, blankcard and envelope: © Creative1/iStockphoto; Back: hand: ©Perov Stanislav /Shutterstock, blank paper: © Art Explosion (RF/CD)via SJI Associates, school logo: © Art Explosion(RF/CD) via SJIAssociates, background room: © Losevsky Pavel/Shutterstock.

Card 178: Front: “Ian Kabra”: James Levin/© Scholastic 2008,private jet: © studio wilke/iStockphoto, magazine edge: SJIAssociates /© Scholastc 2009, metal briefcase: © Photos.com,leather background: © Photodisc (RF/CD) via SJI Associates,; Back:“Ian Kabra”: James Levin/© Scholastic 2008, shoes: © Photodisc(RF/CD) via SJI Associates, jet: © Photodisc (RF/CD) via SJIAssociates, polo: © Photodisc (RF/CD) via SJI Associates, horse: ©Photodisc (RF/CD) via SJI Associates, mountain: © Photodisc (RF/CD)via SJI Associates, target illustration: SJI Associates/© Scholastc2009, magazine edge: SJI Associates / © Scholastc 2009, leatherbackground (re-use): © Photodisc (RF/CD) via SJI Associates.

Card 179: Front: “Andras Gergely”: © Masterfile (RF), Budapest: ©posztos/iStockphoto, cell phone: © LuisPortugal/iStockphoto,computer: © funebre/iStockphoto, scooter: © anzeletti/iStockphoto,earth sphere: © phi2/iStockphoto; Back: map illustration: SJIAssociates/© Scholastc 2009.

Card 180: Front: Napoleon painting: © World History Archive, pictureframe: © D Scott/iStockphoto, wallpaper: © Bill Noll /iStockphoto,globe on stand: © princessdlaf/iStockphoto; Back: paper: ©Cris DeRaud/Stock.xchng, leather background: ©Digital Textures (RF/CD) via SJI Associates , Lucian Letterhead: SJI Associates/© Scholastic 2009.

Card 181: Front: Tower Bridge: © Roger Whiteway/iStockphoto, crowlanding in forground: © Dan Cardiff/iStockphoto, perched crows inforeground and background: © George Cairns/iStockphoto, flying birdsin background: © Merve Poray/Shutterstock, sky: GettyDisc (RF/CD); Back: logo template.

Card 182: Front: Moscow illustration: Michael Jacobs/© Scholastic2009; Back: logo template.

Card 183: Front: scales illustration: © Art Explosion, paper andpolice department logo: SJI Associates/© Scholastic 2009, paperclip: © Josep Altarriba/Stock.xchng; Back: logo template.

Card 184: Front: Lord Byron painting: © The Granger Collection,antique frame: © felix140800/iStockphoto; Back: logo template.

Card 185: Front: oak trees: © Avtg/iStockphoto, open book: © RomanSigaev/Shutterstock, background leather: ©jibjibdesigns/shutterstock; Back: logo template.

Card 186: Front: gravestones on rocky beach: © Bryan and CherryAlexander Photography/Arctic Photo; Back: logo template.

Card 187: Front: “Madison Holt”: James Levin/© Scholastic 2008,uniform shirt: Digital Textures (RF/CD) via SJI Associates, soccerball: © RAWKU5/Stock.xchng, soccer field: © Photos.com, explosion:© Daron Cooke/Stock.xchng, textured paper and background: SJIAssociates; Back: dynamite sticks: © Photos.com, letterhead:© Digital Textures (RF/CD) via SJI Associates, bayonet toy soldier:© Photos.com, bazooka toy soldier: © Photos.com, plastic frog: ©Photos.com, blue ribbons: © Backgrounds and Objects (RF/CD) via SJIAssociates, big ribbon: © Backgrounds and Objects (RF/CD) via SJIAssociates, tablecloth: © Digital Textures (RF/CD) via SJIAssociates.

Card 188: Front: “Ivan Kleister”: © Karl Weatherly (RF)/GettyImages, triangle warning sign: JCVStock/Shutterstock, rectanglewarning sign: Jun Ji/Shutterstock; Back: “the Holts” (allimages): James Levin/© Scholastic 2008, Voortrekker Monument: ©namibelephant/istockhphoto.com, folder and background texture: © DebCohn-Orbach, paper: CGTextures, waterfalls: © Photodisc (RF/CD) viaSJI Associates, amusement park: © Photodisc (RF/CD) via SJIAssociates, windsurfers: © Photodisc (RF/CD) via SJI Associates,library: © Photodisc (RF/CD) via SJI Associates, Europe: ©Photodisc (RF/CD) via SJI Associates.

Card 189: Front: “Maleia Kalani”: © Peter Sterling/Getty Images,swimming trunks: © Matthew Cole/Shutterstock; Back:surfboard: © Md. Kamruzzaman/iStockphoto, illustrations onsurfboard: SJI Associates, tree, scarf,and background: © simongurney/ iStockphoto.

Card 190: Front: hands: © Stepanov/Shutterstock, videogamecontroller: © ayazad/Shutterstock, illustration of John Franklin:John MacNeill/© Scholastic 2009, monitor, desk and wall: © JayCrihfield/Shutterstock; Back: poster on wood wall: © AlenaChirko/Shutterstoc, metal hooks: © remik44992/Shutterstock, globe,ship and iceberg: © Art Explosion (RF/CD).

Card 191: Front: Palacio Nacional (both images): © TrekHolidays/iStockphoto, coffee cup: © Photodisc (RF/CD) via SJIAssociates, stack of books: © Photodisc (RF/CD) via SJI Associates,stack of newspaper: © Photodisc (RF/CD) via SJI Associates, computermonitor: © Photodisc (RF/CD) via SJI Associates, wadded up paper: ©Photodisc (RF/CD) via SJI Associates; Back: logo template.

Card 192: Front: polar bear in foreground: © ThomasBarrat/Shutterstock, iceberg: © Armin Rose/Shutterstock, polar bearin background: © kc31958/iStockphoto; Back: logo template.

Card 193: Front: paper: © andreyutzu/Stock.xchng, leather folio: ©Photos.com, wooden table: © Photos.com, cobwebs: © Photos.com,books in background: © Photos.com, wood floor: © RogerKirby/Stock.xchng; Back: logo template.

Card 194: Front: “Reagan Holt and Arnold”(dog): James Levin/ © Scholastic 2008, paper: © CGTextures, air designs: SJI Associates / ©Scholastic 2009, aircraft: © Art Explosion (RF/CD)/via SJIAssociates, clouds: © Photodisc (RF/CD)/via SJI Associates,amusement park: © Art Explosion (RF/CD)/via SJI Associates; Back: logo template.

Card 195: Front: “Arnold”: James Levin/© Scholastic 2008, coat,boots and goggles: SJI Associates/© Scholastic 2009, tractor andSouth Pole sign: © Steve Estvanik / Cutcaster, footprints: © Ints Tomsons/Cutcaster, mountains and snow inbackground: © Serge VILLA / Cutcaster; Back: logo template.

Card 196: Front: Raleigh map: © North Wind; Back: logo template.

Card 197: Front: aviator illustration: Kyle Hotz and Frank Martin / ©Scholastic 2009, paintbrush: Photodisc (RF/CD), painted wood: ©CGTextures, Back: application and sticky note: © Scholastic2009, airmail package: ©C./Shutterstock, wood background: © CGTextures.

Card 198: Front: “Fiske Cahill”: © Digital Vision (RF)/GettyImages, top and bottom headshots © Scholastic 2009, opened book: ©Roman Sigaev/Shutterstock, paint palette and brushes: ©fdxx/iStockphoto; Back: map of Providence: Courtesy Dept. ofPlanning and Development, Providence, Rhode Island, taxidermyanimals: SJI Associates / © Scholastic2009, playing cards: © VEER Design Essentials (RF/CD) via SJIAssociates, headshot: © Photodisc (RF/CD) via SJI Associates, RISDcampus: courtesy RISD, corkboard background: © ToddDixon/Cutcaster.com.

Card 199: Front: “Natalie Kabra,” “Ian Kabra,” and “JonahWizard”: James Levin/ © Scholastic 2008, wallpaper: de Gournay bypermission, photos on wall: courtesy David Felsen, fireplace,sculpture, and floor: courtesy Charice Silverman; Back: logo template.

Card 200: Front: “Alistair Oh,” “WilliamMcIntyre,” “Reagan Holt,” and “Dan Cahill”: JamesLevin/© Scholastic 2008, wallpaper: de Gournay by permission,fireplace, postcard art, jug, and floor: courtesy Charice Silverman;Back: logo template.

Card 201: Front : “Hamilton Holt”,“Irina Spasky”, “Madison Holt”, “ReaganHolt” and “Arnold”: James Levin/© Scholastic 2008 ,wallpaper: de Gournay by permission, Angkor Wat photo: courtesy DavidFelsen, Italy photo and floor: courtesy Charice Silverman; Back: logo template.

Card 202: Front: “Saladin”: James Levin/© Scholastic 2008,goggles: SJI Associates / © Scholastic 2009, straps and buckle: ©Photos.com, shoulder pads: © stockbyte teens (RF/CD) /via SJIassociates, webbing: © digital textures (RF/CD)/via SJI associates,parachute: © Afonso Lima/Stock.xchng, sky: © Extraordinary clouds(RF/CD)/via SJI associates, plane: ©2002 Taschen Gmbh; Back: logo template.

Card 203: Front: center gravestone: © ZTS/Shutterstock, man’sshadow: © Scholastic 2009, gravestones in background: © JamesMoore/Stock.xchng, grass and trees in background: ©Dhoxax/Shutterstock, burned down house: © Tony Tremblay/iStockphoto;Back: logo template.

Card 204: Front: Aya Sofya (Hagia Sophia): © Gavin Hellier/GettyImages; Back: logo template.

Card 205: Front: mp3 player illustration: SJI Associates/© Scholastic2009, wolf illustration: © FowzanAhmed/Cutcaster, leather background: © digital textures (RF/CD)/viaSJI associates; Back: logo template.

Card 206: Front: Angkor Wat: © Thomas Bradford/iStockphoto; Back: logo template.

Card 207: Front: light: © Duncan Walker/iStockphoto, grid: SJI Associates /©Scholastic 2009; Back: logo template.

Card 208: Front: “Fiske Cahill”: © BethDixson/Getty Images, Caribbean: © jpskenn/Shutterstock, paintbrush: © straga/Shutterstock; Back:illustration boy running and black and white illustration (pick upfrom card 197): Kyle Hotz/ © Scholastic 2009,notebook and wood: © Deb Cohn-Orbach, paintbrush: © ScholasticRF/CD, tape: © CGTextures.

Card 209: Front: yacht: © David Woolley/GettyImages, beach: © Micha Rosenwirth/Shutterstock, snake logo: ©woewchikyury/iStockphoto, “Natalie Kabra”: James Levin/©Scholastic 2008; Back: logo template.

Card 210: Front: silver box: © DolnikovDenys/Shutterstock, x-ray light: © Photodisc (RF/CD) via SJIAssociates, switch, light and x-ray hands: © CGTextures; Back: logo template.

Card 211: Front: island: © DonaldNausbaum/Getty Images; runway: © iofoto/Shutterstock, dock: © ElisaLocci/Shutterstock, satellite dish and lab attenae: © Photodisc(RF/CD) via SJI Associates; Back: logo template.

Card 212: Front: Anne Bonny: © The BritishLibrary/HIP/The Image Works, background wood: © clearviewstock/Shutterstock, treasure chest: © Zoran VukmanovSimokov/Shutterstock, paper: © CGTextures; Back: paper,quill and ink: © Leigh Prather /Shutterstock.

Card 213: Front: paper and wood table: © CGTextures, nautical map: ©amfoto/Shutterstock, napkin: ©MBCheatham/iStockphoto, drink: © artJazz/iStockphoto; Back: logo template.

Card 214: Front: “Jonah Wizard”: JamesLevin/© Scholastic 2008, body of singer in concert: © PaulBradbury/Getty Images, microphone: © 4x6/iStockphoto; Back:phone: © Scholastic 2009, denim background: © CGTextures.

Card 215: Front: Josephine Baker: © Hulton Archive/Getty Images.Josephine Baker TM is a trademark of the Estate of Josephine Baker/www.CMGWorldwide.com,feather: © yuyangc/Shutterstock; Back: table and sheet music: SJI Associates/© Scholastic 2009,Brownie camera: © Alan Heartfield/Shutterstock.

Card 216: Front: Sagrada Familia: ©modestlife/Shutterstock/© Eloi Bonjoch / Temple Sagrada Família; Back: logo template.

Card 217: Front: bomber planes: ©ArchivePhotos/Getty Images; Back: logo template.

Card 218: Front: van: © JoePotato/iStockphoto, lights on van: © CGTextures, monitors, screenimage, satellite dish, jungle and desert camouflage, ice cream conemounting and background: © Photodisc (RF/CD) via SJI Associates; Back: logo template.

Card 219: Front: illustration Mariana trench: NeilBrigham/© Scholastic 2009, paper: © CGTextures; Back: logo template.

Cards 220-225: Front: cave: © omers/Shutterstock,rocks: © Mike Tan C.T./Shutterstock, pebbles: © Osa/Shutterstock,fire and clouds: © Ivan Cholakov Gostock-dot-net/Shutterstock,cracks: © CGTextures.

Card 220: Front: “Amy Cahill”:JamesLevin/© Scholastic 2008, body girl jumping: © JacekChabraszewski/Shutterstock, shoes: © MagdalenaZurawska/Shutterstock, cave, pebbles, fire and clouds: see card220-225; Back: Infernoillustration: Kyle Holtz/© Scholastic 2009.

Card 221: Front: “Dan Cahill”:JamesLevin/© Scholastic 2008, body boy jumping: © JacekChabraszewski/Shutterstock, cave, pebbles, fire and clouds: see card220-225; Back: logo template.

Card 222: Front: “Jonah Wizard”:JamesLevin/© Scholastic 2008, cave, pebbles, fire and clouds: see card220-225; Back: logo template.

Card 223: Front: “Hamilton Holt”: JamesLevin/© Scholastic 2008, cave, pebbles, fire and clouds: see card220-225; Back: logo template.

Card 224: Front: “Alistair Oh”:JamesLevin/© Scholastic 2008, cave, pebbles, fire and clouds: see card220-225; Back: logo template.

Card 225: Front: “Natalie Kabra”:JamesLevin/© Scholastic 2008, cave, pebbles, fire and clouds: see card220-225; Back: logo template.

Card 226: Front: “Alistair Oh”:JamesLevin/© Scholastic 2008, Machu Picchu: © Joel Blit/Shutterstock; Back: paper: © ValentinAgapov/Shutterstock, leather background and burnt paper: ©CGTextures.

Card 227: Front: coffin: © Alan Thornton/GettyImages, roses: © bloom/Shutterstock, plaque: © M.E.Mulder/Shutterstock, dirt: © carroteater/Shutterstock; Back:accident scene: © Getty Images, pictureframe: © bartzuza/Shutterstock, folders: Photodisc (RF/CD) via SJIAssociates; blueprint: © CGTextures.

Card 228: Front: brick: © Jose Manuel(RF)/Getty Images, hands: © Kateryna Potrokhova/Shutterstock,ticket: © Jill Battaglia/Shutterstock, Polaroid frame: © SandraCunningham /Shutterstock, Josephine Baker name on ticket:Josephine BakerTM is a trademark of the Estate ofJosephine Baker/www.CMGWorldwide.com; Back: logo template.

Card 229: Front: DNA illustration: Don Bishop/ ©Scholastic 2009; Back: logo template.

Card 230: Front: knife: © ArtemSamokhvalov/Shutterstock, satellite dish: © higyou/Shutterstock,microphone: © restyler/Shutterstock, lens: © ZhiltsovAlexandr/Shutterstock, picks: © David Gordon/Shutterstock, Fabricbackground: Photodisc (RF/CD) via SJI Associates; Back: logo template.

Card 231: Front: hiking boot: © WolfgangAmri/Shutterstock, knife: © pirita/Shutterstock, gps: ©S1001/Shutterstock, map: © Amgun/Shutterstock, gun: ©Gadom88/Shutterstock, dart: © luchschen/Shutterstock, feather: ©VitCOM Photo/Shutterstock, metal background: © CGTextures; Back: logo template.

Card 232: Front: eye: © Digital Vision(RF)/ Getty Images, dagger: © PeJo/Shutterstock, sky: © CG Texures; Back: background, tape, trees and paper background: ©CGTextures, cardboard: © JillBattaglia/Shutterstock, magnets: © demarcomedia /Shutterstock, “Irina Spasky,” “Alistair Oh,” “Dan and Amy Cahill,”and “William McIntyre”: James Levin/© Scholastic 2008,sticky notes: © Scholastic 2009.

Card 233: Front: Winston Churchill:Libraryof Congress, British Flag: © Andresr/Shutterstock, book: © NeoEdmund/Shutterstock, pin: © Supernova/Shutterstock; Back:pocketwatch: © jtphotos101/Shutterstock,papers: © CGTextures.

Card 234: Front: Moroccan market: © VladimirMelnik/Shutterstock, Turkish clothing: © Orhan/Shutterstock,“Madison Holt,” “Reagan Holt,” “Hamilton Holt” and“Arnold”: James Levin/© Scholastic 2008, fez: ©selanik/Shutterstock, Arabic headdress: © Dwight Smith/Shutterstock; Back: logo template.

Card 235: Front: angler fish: © NorbertWu/Minden/National Geographic, rock: © CG Texures; Back: logo template.

Card 236: Front: sleeve: © StevenFrame/Shutterstock, snake: © Rago Arts/Shutterstock, jewels: ©Susan S. Carroll/Shutterstock; Back: logo template.

Card 237: Front: bracelet: © JoLin/Shutterstock,bracelet links: © kirstypargeter/iStockphoto, tooth:© Rolandino/Shutterstock, letter “V”: © Arogant /Shutterstock,skull and crossbones: © Wire_man /Shutterstock, dagger: © fabiofersa/Shutterstock, bullet: © Chris Alleaume/Shutterstock, velvetbackground: © Morozova Oxana/Shutterstock; Back: logo template.

Card 238: Front: “Mary-Todd Holt”: ©RadiusImages/Photolibrary, gym: © dafne/Shutterstock, weight: ©4736202690; Back: bottle and towel:SJIAssociates/© Scholastic 2009, marker: © Bomshtein/Shutterstock.

Card 239: Front: “Buchanan Holt”: © ClassicStock/Alamy,shelves: © bvasilyev/Shutterstock, left trophy: © J.Helgason/Shutterstock, right trophy: © JuliánRovagnati/Shutterstock, plaque: © SteveSnowden/Shutterstock, brass nameplate: © Andy445/iStockphoto, leftbooks: © slavapolo/Shutterstock, right books: © CGTextures, threecolor ribbon: © Aeromass/Shutterstock, blue ribbon: © AnnBaldwin/Shutterstock, medal with blue ribbon: ©nikkytok/Shutterstock; Back: papers: © Valentin Agapov/Shutterstock ,padlock: © Bjorn Heller/Shutterstock, background: ©CGTextures.

Card 240: Front: Machu Picchu: © PhilipMuller/Cutcaster, cat: James Levin/©Scholastic 2008, cat’s hat: © Carlos E. Santa Maria/Shutterstock; Back: logo template.

Card 241: Front: “Saladin”: James Levin/© Scholastic 2008,shipwreck: Pborowka/Shutterstock, diving mask:Photodisc (RF/CD) via SJI Associates, cat body, scuba gear andbubbles: SJI Associates/© Scholastic 2009; Back: logo template.

Card 242: Front: stadium and scoreboard: © Gloom/Shutterstock,crowd: © Max blain/Shutterstock, baseball, glove and hand: © CraigBarhorst/Shutterstock; Back: logo template.

Card 243: Front: sea lion: © NorbertWu/National Geographic Stock, seaweed: © olias32/Shutterstock,headset: © Alexander Sabilin/Shutterstock, backpack: © terekhovigor /Shutterstock, radio receiver: © Donald R. Swartz/Shutterstock,straps: © Eimantas Buzas/Shutterstock, headlamp: ©iChip/iStockphoto; Back: logo template.

Card 244: Front: “Nellie Gomez”: ©Vstock (RF)/Alamy, snake nosering: © Kulish Viktoriia/Shutterstock; Back:man’s hands: © Agphoto/Shutterstock,binder clip and color paper: © Scholastic 2009, top paper: © SJIAssociates/© Scholastic 2009.

Card 245: Front: “Amy Cahill”:JamesLevin/© Scholastic 2008, Great Wall of China: © xxz114/iStockphoto,scroll ends: © Evan Wong/Shutterstock, shadowy figure: © JaimieDuplass/Shutterstock, paper: © CGTextures; Back: logo template.

Card 246: Front: “Arthur Trent”:©Beth Creasey Griffiths, gate: © IIC/ Axiom/Getty Images, marble andlines: © CGTextures; Back: logo template.

Card 247: Front: camcorder: © DolginAlexander Klimentyevich/Shutter, grave: ©iofoto/Shutterstock, bottle: © Sergieiev/Shutterstock; Back: logo template.

Card 248: Front: artist’s easel: ©TomDavison/Shutterstock, paintbrushes: © Mushakesa /Shutterstock,finger pointing to watch: © ElGreco/Shutterstock,Amelia Earhart drawing: Kyle Holz/ © Scholastic 2009, tape, coffeecup and single paintbrush: (RF/CD) via SJI Associates; Back: logo template.

Card 249: Front: illustration:DaveStevenson/© Scholastic 2009, paper: © maxstockphoto/Shutterstock,border: Art Explosion (RF); Back: logo template.

Card 250: Front: “Dan Cahill”:©James Levin/Scholastic 2008, ninja star: HemeraTechnologies/PhotoObjects.net; Back: logo template.

Card 251: Front: Florence Nightingale's medicinechest: © Florence Nightingale Museum, London, UK / The BridgemanArt Library International, portrait of Florence Nightingale: Libraryof Congress, picture frame: © Samantha Grandy/Shutterstock, desk: ©Hal_P/Shutterstock, wallpaper: © VV/Shutterstock, label: © ThomasBethge/Shutterstock, paper: © Robyn Mackenzie/Shutterstock. Back: logo template.

Card 252: Front: Easter Island: © Leksele/Shutterstock,monitors: © Vertigo3d /Shutterstock, man in chair: © HelderAlmeida/Shutterstock, sky: © CGTextures; Back: logo template.

Card 253: Front: light: © Duncan Walker/iStockphoto, grid: SJI Associates /©Scholastic 2009; Back: logo template.

Card 254: Front: “Amy Cahill":James Levin/ © Scholastic 2008, winterjacket: © Razvan Chirnoaga/Shutterstock, Matterhorn, Switzerland: ©Strider/Shutterstock; Back: logo template.

Card 255: Front: Cathedral Saint Pierre in winter, Geneva,Switzerland: © Rudy Mareel/Shutterstock, hat: ©Phase4Photography/Shutterstock, scarf: © MaksimStriganov/Shutterstock, snow and shreds of paper: © Scholastic 2009,briefcase background: © Deb Cohn-Orbach, “Dan Cahill”: JamesLevin/© Scholastic 2008; Back: logo template.

Card 256: Front: footprint in snow: © DudarevMikhail/Shutterstock, cork background: © CGTextures, thumbtack: ©Objects (RF/CD)/Scholastic, sticky note: © Scholastic, ice: ©CGTextures; Back: logo template.

Card 257: Front: industrial space: © CGTextures, x-ray frame:© CGTextures; Back: logo template.

Card 258: Front: suit of armor: © Shiva/Shutterstock, redfeather: © Ivan Ponomarev/Shutterstock, dart: ©luchschen/Shutterstock, feather: © VitCOM Photo/Shutterstock, V onbreastplate: © Arogant /Shutterstock, knife in hand: ©pirita/Shutterstock; Back: logo template.

Card 259: Front: e-reader: © Scholastic 2010, backgroundbooks: © CGTextures, wood table: © CGTextures; Back: logo template.

Card 400: Front: "Amy Cahill": James Levin/© Scholastic 2008, Times Square:© Alan Schein Photography/Corbis; Back: logo template.

Card 401: Front: "Dan Cahill": JamesLevin/© Scholastic 2008, Red Fort and Palace: © John Henry ClaudeWilson/Robert Harding World Imagery/Corbis; Back: logo template.

Card 402: Front: "Natalie Kabra": James Levin/©Scholastic 2008, Sydney Opera House: © R. Wallace/Stock Photos/zefa/Corbis; Back: logo template.

Card 403: Front: "Arnold": James Levin/©Scholastic 2008, Westminster Bridge: © John Miller/Robert HardingWorld Imagery/Corbis; Back: logo template.

Card 404: Front: "Ian Kabra": James Levin/©Scholastic 2008, London reflected in the Thames river: © AntClausen/Shutterstock; Back:PDA: SJI Associates/© Scholastic 2009, file folder: © FengYu/Shutterstock, wood table: © ElvisSantana/Stock.xchng.

Card 405: Front: "Amy and Dan Cahill": James Levin/© Scholastic 2008, GareDe Lyon train station: © Comstock (RF)/Jupiter Images; Back:PDA: SJI Associates/© Scholastic 2009, file folder: © FengYu/Shutterstock, marble background: © Photodisc (RF/CD) via SJIAssociates.

Card 406: Front: "Natalie Kabra": James Levin/©Scholastic 2008, Big Ben in London, night sky: ©photogl/Shutterstock; Back:paper: © Scholastic 2009.

Card 407: Front: "Amy and Dan Cahill": James Levin/© Scholastic 2008, Independence Hall, Philadelphia: © RachealGrazias/Shutterstock; Back: logo template.

Card 408: Front:"Irina Spasky": James Levin/© Scholastic 2008; Back: logo template.

Card 409: Front:"Ian Kabra": James Levin/©Scholastic 2008, London skyline reflected in the Thames river: © AntClausen/Shutterstock; Back:PDA: SJI Associates/© Scholastic 2009,file folder: © Feng Yu/Shutterstock, wood table: ©Elvis Santana/Stock.xchng.

Card 410: Front:"Natalie Kabra": James Levin/© Scholastic 2008, Big Ben inLondon, night sky: © photogl/Shutterstock; Back: logo template.

Card 411: Front:"Amy and Dan Cahill": JamesLevin/© Scholastic 2008, Gare De Lyon train station: © Comstock(RF)/Jupiter Images; Back:PDA: SJI Associates/© Scholastic 2009, file folder: © Feng Yu /Shutterstock, marble background: © Photodisc (RF/CD) via SJIAssociates.

Card 412: Front:"Arnold": James Levin/©Scholastic 2008, Westminster Bridge: © John Miller/Robert HardingWorld Imagery/Corbis; Back: logo template.

Card 413: Front:"Dan Cahill": James Levin/© Scholastic 2008,Red Fort and Palace: © John Henry ClaudeWilson/Robert Harding World Imagery/Corbis; Back: logo template.

Card 414: Front:"Arnold": James Levin/© Scholastic 2008, WestminsterBridge: © John Miller/Robert Harding World Imagery/Corbis; Back: logo template.

Card 415:Front: "Natalie Kabra": JamesLevin/© Scholastic 2008, Sydney Opera House: © R. Wallace/StockPhotos /zefa/Corbis; Back: logo template.

Card 416:Front: "Amy Cahill": JamesLevin/© Scholastic 2008, Times Square: © Alan ScheinPhotography/Corbis; Back: logo template.

Card 417:Front: "Amy and Dan Cahill":James Levin/© Scholastic 2008, Venice: © AlionaBloshchynska/Shutterstock; Back: logo template.

Card 418: Front:"Arnold": James Levin/© Scholastic 2008, WestminsterBridge: © John Miller/Robert Harding World Imagery/Corbis; Back: logo template.

Card 419: Front:"Amy Cahill": James Levin/©Scholastic 2008, trees and buildings in Tokyo: © IainMasterson/Alamy; Back: logo template.

Card 420:Front: "Dan Cahill": JamesLevin/© Scholastic 2008, trees and buildings in Tokyo: © IainMasterson/Alamy; Back: logo template.

Card 421: Front:"Alistair Oh": James Levin/©Scholastic 2008, trees and buildings in Tokyo: © IainMasterson/Alamy; Back: logo template.

Card 422: Front:"Hamilton Holt": James Levin/©Scholastic 2008, pair of polar bears play-fighting:© Tom Brakefield (RF)/Getty Images, fur cap: © Karkas/Shutterstock;Back: logo template.

Card 423: Front:"Amy and Dan Cahill": JamesLevin/© Scholastic 2008, "Saladin": James Levin/ ©Scholastic 2008; Back: logo template.

Card 424: Front:"Dan Cahill": James Levin/©Scholastic 2008, Red Fort and Palace: © John Henry ClaudeWilson/Robert Harding World Imagery/Corbis; Back: logo template.

Card 425: Front:"Amy Cahill": James Levin/©Scholastic 2008, Times Square: © Alan Schein Photography/Corbis;Back: logo template.

Card 426: Front and Back: wig: ©PYMCA/Jupiter Images, Abstract background: © LeonART/Shutterstock,wood table: © Elvis Santana /Stock.xchng; Front:woman in jacket: © Jupiter Images, femalejacket: © PhotoNAN/Shutterstock, red eyeglasses: © EkaterinaZnosok/Shutterstock, buttons: © ravi/Shutterstock; Back:eye glasses: © Mpixix World/Cutcaster, manwith beard: © Image Source Black (RF)/Jupiter Images.

Card 427: Front: "Arthur and Hope": © Fiona Sarn,Moscow Embassy: © culliganphoto/Alamy; Back: logo template.

Card 428: Front: airline tickets:© Ewa Walicka/Shutterstock; Back: logo template.

Card 429: Front: Arctic ice road: © Bryan Alexander/ArcticPhoto, book: © Roman Sigaev/Shutterstock; Back: logo template.

Card 430: Front: open hand: © Tony Kwan/iStockphoto, oldparchment paper: © maxstockphoto/Shutterstock, airport scene: ©Eric Gevaert/Shutterstock; Back: logo template.

Card 431: Front: "Dan Cahill": James Levin/©Scholastic 2008, nightalley: © stask/iStockphoto, bamboo: SJI Associates/© Scholastic2009, bamboo: © CGTextures, ninja stars: © Scholastic 2009; Back: logo template.

Card 432: Front: Mayan Temple Yaxha: © buggslife/iStockphoto; Back: logo template.

Card 433: Front: "Man in Black": © BethDixson/Getty Images, Ayers Rock: © imagebroker/Alamy, clouds: ©Photodisc (RF/CD) via SJI Associates; Back: logo template.

Card 434: Front: "Amy Cahill": James Levin/©Scholastic 2008, sky: ©Iakov Kalinin/Shutterstock, elephants: © DavidRyznar/Shutterstock; Back: logo template.

Card 435: Front: "Dan Cahill": James Levin/©Scholastic 2008, alley: © Amy Johansson/Shutterstock, telephonebooth: © CGTextures; Back: logo template.

Card 436: Front: "Amyand Dan Cahill": James Levin/© Scholastic 2008, CatherinePalace: © krechet/Shutterstock; Back: logo template.

Card 437: Front: "Amy and Dan Cahill":James Levin/© Scholastic 2008, paperand files: © Valentin Agapov/Shutterstock, metal background: ©CGTextures. Back: logo template.

Card 438: Front: "Amy and Dan Cahill": JamesLevin/© Scholastic 2008, sand: © Jill Battaglia/Shutterstock, palmsat hurricane: ©photobank.kiev.ua/Shutterstock, bolt of lightning: © JhazPhotography/Shutterstock, palm fronds © Juriah Mosin/Shutterstock,computer paper: © Feng Yu/Shutterstock,metal background: © CGTextures ; Back: logo template.

Card 439: Front: "Saladin":James Levin/© Scholastic 2008, tree: © alastis /Shutterstock, gold domed building: ©kojoku/Shutterstock, backpack: © WilleeCole/Shutterstock, straps(from camera bag): © Xtremer/Shutterstock, webbing on buckle: SJIAssociates/© Scholastic 2009, socks texture: © CGTextures,headphone: © Kapu/Shutterstock, video camera: ©Kokhanchikov/Shutterstock; Back: logo template.

Card 440: Front: teddybear: © adziohiciek/Shutterstock,stuffed bunny: © SandraCunningham/Shutterstock, antenna: © HugoMaes/Shutterstock , retina scannerand camera: ©CGTextures, tranquilizer base: ©Emin Ozkan/Shutterstock, tranquilizerdarts: © Ungor /Shutterstock , satellite dish: ©higyou/Shutterstock, buttons: ©ultimathule / Shutterstock , buttonhinge: ©nito/Shutterstock ,audio device: ©CGTextures; Back: logo template.

Card 441: Front: " Jonah Wizard”: JamesLevin/© Scholastic 2008, Barnes and Noble storefront: © Barnes andNoble, book: © Tatiana Makotra/Shutterstock, blank book at angle: ©joingate/Shutterstock; Back: logo template.

Card 442: Front: dolphin: © Media Bakery (RF), bandage: ©frantab/Shutterstock, flashlight: © Vitaly Raduntsev/Shutterstock,blue knee brace: © Julián Rovagnati/Shutterstock, video camera: ©Andrey Zyk/Shutterstock, monopod: © ZTS/Shutterstock, helmet andgoggles: © Nikola Spasenoski/Shutterstock, light beams: ©Tund/Shutterstock; Back: logo template.

Card 443: “Amy Cahill”: JamesLevin/© Scholastic 2008, River Seineand Notre Dame at night: ©nagelestock.com/Alamy.

Card 444: “Dan Cahill”: James Levin/© Scholastic 2008,Baroque Dom Cathedral, Salzburg, Austria : © AleksandarTodorovic/Shutterstock.

Card 445: “Hamilton Holt”: James Levin/© Scholastic 2008, Taj Mahal: ©Pius Lee/Shutterstock, bandage: © Picsfive/Shutterstock.

Card 446: “NatalieKabra”: James Levin/©Scholastic 2008, bridge in Ecuador: © Paskee/Shutterstock.

Card 447: “JonahWizard”: James Levin/© Scholastic 2008, Easter Island: ©Leksele/Shutterstock.

Books

Book 1: All images created bySJI Associates/©Scholastic 2009.

Book 2: coverand inside flap: Portrait ofMarie-Antoinette de Habsbourg- Lorraine: ©The Bridgeman Art Library/Getty Images;interior:musical notes: SJI Associates/© Scholastic2009, wires: © STILLFX/Shutterstock,lights: © Gilmanshin/Shutterstock,chip border: © JoeWhite/Shutterstock, reflection glare, reflection of ceiling, and walltexture: © Photodisc(Background Series).

Book 3: cover and inside flap: Japanese star: © HemeraTechnologies/PhotoObjects.net (RF); interior: scratchlettering: SJI Associates/©Scholastic 2009, paper:© Sky_walker/Stock.xchng, paper: ©miguel ugalde/Stock.xchng, scratchlettering: SJI Associates/©Scholastic 2009, parchment:© DorotaKaszczyszyn/Stock.xchngg, scratch lettering: SJIAssociates/© Scholastic2009, Egyptian mirror:© SJI Associates/Scholastic 2009,scratch lettering: ©SJI Associates/Scholastic 2009.

Book 4: cover and inside flap: Egyptian statue: SJIAssociates/© Scholastic2009; interior: paper: ©Joel Dietle/Stock.xchngg, Nefetaritomb drawing: © SJIAssociates/Scholastic 2009, Nefetari tombdrawing: © SJIAssociates/Scholastic 2009, paper withshadows: © DavideGuglielmo/Stock.xchng, paper with shadows (re-use): ©Davide Guglielmo/Stock.xchng, wrinkled paper:© G Schouten deJel/Stock.xchng, heiroglyphs symbols: ©SJI Associates /Scholastic 2009, wrinkled paper with lines:© magicmarie/Stock.xchng,paper: © JanFlaska/ Stock.chng, paper:© AndrewC./Stock.chng, myrrhleaf illustration: SJI Associates/©Scholastic 2009, chains:© photoobjects.net,iron: ©photoobjects.net, woodtexture: © tdub303/Stock.chng,myrrh illustrationwebsite: © SJIAssociates/Scholastic 2009.

Book 5: cover and inside flap: bird illustration: SJIAssociates/© Scholastic2009; interior: paper texture:SJI Associates/©Scholastic 2009, papertexture: © RawKu5/Stock.xchng,cursive lettering: SJI Associates/©Scholastic 2009, Rasputin:© AP Photo, shoeand heart puzzle: SJI Associates/©Scholastic 2009, woodtexture: ©DoraPete/Stock.xchng, amber textures: ©Kriss Szkurlatowski/Stock.xchng, paper: ©Andrew C./Stock.xchng, paper: ©Roger Kirby/Stock.xchng, paper (re-use): ©Roger Kirby/Stock.xchng.

Book 6: cover and inside flap: airplane: SJIAssociates/© Scholastic2009; interior: wall texture:© Photodisc(backgrounds), wall texture(re-use): © Photodisc(backgrounds), be mine heart drawing:SJI Associates/©Scholastic 2009, old paper: ©Chris King/Cutcaster, wordsdesign: SJI Associates/©Scholastic 2009.

Book 7: cover and inside flap: computer circuit board: ©Dariusz Majgier/Shutterstock, whitefiber light: © BobbieSandlin/Shutterstock, red light waves:© BobbieSandlin/Shutterstock; interior: postcard:SJI Associates/©Scholastic 2009, oldfolded paper: ©MBPhoto/iStockphoto, caverubbing: SJI Associates/©Scholastic 2009. oldfolded paper (re-use): ©MBPhoto/iStockphoto, ShakaZulu plaque: SJI Associates/©Scholastic 2009.

Book 8: cover and inside flap: mask: SJIAssociates/© Scholastic2009; interior: silk: ©Digital Textures, Chinesecharacter: SJI Associates/©Scholastic 2009, locket:© KeithWebber/iStockphoto, "MadeleineCahill" illustration:© Scholastic 2009,fabric: ©CGTextures, Chinesecharacter: © SJIAssociates/Scholastic 2009, brick: ©CGTextures, vial:© luchschen/Shutterstock,snow and frost: ©Photodisc.

Book 9: cover and inside flap: ship: SJIAssociates/© Scholastic2009, whirlpool: ©Lingbeek/iStockphoto, vortex:© mevans/iStockphoto;interior: sand: ©CGTextures, paper:© CGTextures,metal: ©CGTextures, tooth(re-use from card 237): © Rolandino/ Shutterstock,charm link (re-use fromcard 237): ©kirstypargeter/iStockphoto, parchment:© Najin/Shutterstock.

Book 10: cover and inside flap: keys and glass:SJI Associates/©Scholastic 2009; interior: papertexture: © CGTextures,coins: ©wakuka/iStockphoto, testtube: SJI Associates/©Scholastic 2009, typewrittenpaper: SJI Associates/©Scholastic 2009, graverubbing on paper: SJI Associates/©Scholastic 2009, metalpole: SJI Associates/©Scholastic 2009, ribbonwith type: SJI Associates/©Scholastic 2009, signs:SJI Associates/© Scholastic2009, metal texture: ©CGTextures, metalplaques: SJI Associates/©Scholastic 2009.

Book 11: cover and interiors: postersand screws: © Alena Chirko/Shutterstock, crown: ©Art Explosion, writing in sand: ©Stephen Aaron Rees/Shutterstock, metal sign: © CGTextures, old paper: SJIAssociates / ©Scholastic 2008 , vial: SJIAssociates / ©Scholastic 2008, Medusa painting byCarvaggio: © akg-images/Electa/The Image Works.

Missions

Mission 0: Agent Training

Game Visuals: stuntpilot, dogfight:© Rock Solid Arcade;skeet shoot and lab rat: © Arkadium.

Intro: folder: © subjug/iStockphoto, binoculars: © MBPhoto/iStockphoto,Polaroid: © colevineyard/iStockphoto, newspaper clipping: NathanHenry Design/© Scholastic 2008, top secret stamp: © GoktugGurellier/iStockphoto, briefcase: © inte2000/iStockphoto, passport:© Scholastic 2008, wood surface: © CGTextures, "Grace Cahill":James Levin/© Scholastic 2008, silhouette of running kids: © SarahNicholl/Shutterstock.

Grace'sMansion: sky: © piskunov/iStockphoto,grass: © Dhoxax/Shutterstock, mansion: © Tony Tremblay/iStockphoto,"William McIntyre": James Levin/ © Scholastic 2008.

Note FromGrace: red wax stamp: NathanHenry Design/© Scholastic 2008, magnifying glass: © BarisSimsek/iStockphoto, folder: © subjug/iStockphoto, top secret stamp:© Goktug Gurellier/ iStockphoto, camera: © bedo/iStockphoto, key: ©scholastic 2008, vial: © DSGpro/iStockphoto, wood surface: ©CGTextures, compass:© travellinglight/iStockphoto.

Stunt Pilot: The 39 Clues Card 59.

Cahill CodeBook: machine: © robaina/iStockphoto,wood surface: © CGTextures, folder:© subjug/ iStockphoto.

The TomasBranch: wood surface: © CGTextures,letter:SJI Associates /© Scholastic 2009, telescope:© LuMaxArt/iStockphoto, Annie Oakley (re-use from card 52): ©Granger Collection, Annie Oakley photo frame: ©kentarcajuan/iStockphoto, Mt. Everest: © guenterguni/iStockphoto,Mt. Everest photo frame: © Desja/iStockphoto, bullet: ©webking/iStockphoto, Columbus etching: © duncan1890/iStockphoto,map: © javarman3/iStockphoto, phone: © Amorphis/iStockphoto.

Skeet Shoot: The 39 Clues card 52.

Cahill CodeBook: machine re-use: ©robaina/iStockphoto, wood surface: © CGTextures,folder: © subjug/iStockphoto.

The LucianBranch: wood surface: © CGTextures,paper: Nathan Henry Design/© Scholastic 2008, soviet pin: © dmitrypoliansky/Stock.xchng, lipstick: © Veer (RF/CD) via SJI Associates,darts: © Veer (RF/CD) via SJI Associates, locket: ©spxChrome/iStockphoto, photographs: © spxChrome /iStockphoto,postcard: © whitemay/iStockphoto, poison rings: ©Malina/Stock.xchng, Napoleon: © Granger Collection.

Decoder: The 39 Clues Card 41.

Cahill CodeBook: machine: © robaina/iStockphoto,wood surface: © CGTextures, folder:© subjug/iStockphoto.

The JanusBranch: wood surface: © CGTextures,paper: Nathan Henry Design/ © Scholastic 2008, sword handle: ©DieterHahn/iStockphoto, rose: © SorenP /iStockphoto, paint brushes:© flyparade/iStockphoto, Vitruvian man: ©Jodie Coston/iStockphoto, cufflinks: © ukapala/ iStockphoto, tie: ©narcisa/iStockphoto, pilot wings: © Graffizone/iStockphoto, stamp: ©raclro/iStockphoto.

Dogfight: The 39 Clues Card 10.

Cahill CodeBook: machine: © rabaina/iStockphoto,wood surface: © CGTextures, folder:© subjug/iStockphoto.

The EkaterinaBranch: wood surface: © CGTextures,paper composite: Nathan Henry Design/© Scholastic 2008, blueprint: ©belterz/iStockphoto, vial (flask): © ToddSm66/iStockphoto, circuitboard: © Wendell Franks/iStockphoto, official document: Nathan HenryDesign/© Scholastic 2008, calculator: © mbbirdy/iStockphoto, accesscard: © Anzav/iStockphoto.

Lab Rat: The 39 Clues Card 26.

Cahill CodeBook: machine: © robaina/iStockphoto,wood surface: © CGTextures, folder:© subjug/iStockphoto.

Clue: folder: © subjug/iStockphoto, binoculars: © MBPhoto/iStockphoto,photographs: colevineyard/iStockphoto, newspaper clipping: NathanHenry Design/© Scholastic 2008, top secret stamp: © GoktugGurellier/iStockphoto, briefcase: © inte2000/iStockphoto, passport:© Scholastic 2008, "Grace Cahill": James Levin/©Scholastic 2008, silhouette of running kids: © SarahNicholl/Shutterstock.

Mission 1: Titanic-The Lost Clue

Submarine Game: © Rock Solid Arcade.

Briefing: iceberg: © VeraBogaerts/Shutterstock, Titanic postcard: © Lake CountyMuseum/Corbis, oil painting: © Margaret Johnson/SuperStock, Titanic poster: © The Granger Collection, early 20th century map:© Archives Charmet/The Bridgeman Art Library, Urquhart castle LochNess: © Stephen Finn/Shutterstock, Titanic plaque underwater: © AP Photo, girl: © S.M. Jones/Minnesota Historical Society,bow railing of Titanic : © Emory Kristof/Getty Images.

Loch Ness: rusty old sign: ©Gyula Matics/Shutterstock, Drumnadrochit. Highlands, Scotland: © agefotostock/SuperStock.

George McClain: “GeorgeMcClain”: © Steve Prezant/Corbis.

Titanic: red bagin grass: © Peiling/Shutterstock.

George McClain: mill inScotland: © Susan Mackenzie/Shutterstock, “George McClain”: ©Steve Prezant/Corbis.

George’s Briefcase: briefcase lock: © Pablo Eder, open briefcase: © Siede Preis/GettyImages,

Grace’s Letter: briefcase: ©Siede Preis/Getty Images, bench at park: © HakkiArslan/Shutterstock.

Mausoleum: MacQuairieMasoleum: © Chris Mattison/Alamy.

Secret Map: etchings: © Scholastic 2008, one way sign: © DanMoore/iStockphoto.

Paul Addison: “PaulAddison”: © Stock 4B, boy smiles and looks: © Stock 4B, graveyardat church: © Lenice Harms/Shutterstock.

The Nessie Shack: sign outsidecottage: © Windsor & Wiehahn/Getty Images, Isle of Mull,Scotland: © Stephen Beaumont/Shutterstock, souvenir shop: ©Stockbyte (RF) /Getty Images, wooden sign: © EdgarsDubrovskis/Shutterstock, sign on wooden pole: © Soca/Shutterstock,notice board: © Margo Harrison/Shutterstock, yellow flag in sky: ©Luminouslens/Shutterstock.

Inside the Shack: insideNessie’s shack: SJI Associates/© Scholastic 2008.

Secret Instructions: wood: SJIAssociates/© Scholastic 2008.

Trapdoor: trapdoor: SJIAssociates/© Scholastic 2008.

Nessie’s Lair: Nessie’sLair: SJI Associates/© Scholastic 2008.

Lost Clue: inside Nessie’sshack: SJI Associates/© Scholastic 2008.

Mission 2: The Emperor's Secret

Snake Charmer Game: © Rock Solide Arcade.

Briefing: postage stamp: © Ken Brown/Shutterstock, Red Fort: © GaliMikhalishina/Shutterstock, henna tattoo on hands: © ArchanaBhartia/Shutterstock, water lily: © Neale Cousland/Shutterstock,golden monkey: © ErickN/Shutterstock, Buddha statue: ©aliciahh/Shutterstock.

The Evidence: The 39 CluesCards, peacock: © sjgh/Shutterstock, golden ornament: ©chen/Shutterstock, wax seal: © Jackie Carvey/Shutterstock, stamp: ©Albert Campbell/Shutterstock.

Agra: Entry gate of Taj Mahal:© Boris Stroujko/Shutterstock.

Ophir: “Ophir Dhupam”: ©PhotosIndia (RF)/Getty Images, Taj Mahal: © MartinAllinger/Shutterstock.

Taj Mahal Grounds: Taj Mahal:© Mark Weiss/iStockphoto.

Secret Poem: Taj Mahal wallclose-up: © Kharidehal Abhirama Ashwin/Shutterstock.

The Holts: “Madison, Reaganand Hamilton Holt”: James Levin/© Scholastic 2008, Taj Mahal: ©John Woodworth/iStockphoto.

The Agra Fort: Red Fort: © EdFreeman/Getty Images.

Lan: “Lan Nguyen”: ©James Hardy (RF)/age fotostock, Red Fort: © Blaine HarringtonIII/Alamy.

Train Station: train station:© Kumar Sriskandan/Alamy.

Red Fort: Red Fort: © LucianoMortula/Shutterstock.

Lahauri’s Secret: wall ofRed Fort, detail: © Ladi Kirn/Alamy.

Diwan-i-Khas: Diwan-i-Khas,Red Fort: © Angelo Hornak/Alamy.

Hidden Mark: Diwan-i-Khas RedFort, detail: © Angelo Hornak/Alamy.

Snake Charmer: Snake charmerillustration: Craig Spearing/© Scholastic 2009.

Congratulations: Diwan-i-Khas,Red Fort: © Angelo Hornak/Alamy.

Mission 3: The Lost Diamond

Safe Puzzle Game: © Scholastic 2009.

Briefing a and b: Tower of London XXL: © BeholdingEye/iStockphoto,Russia: © wsfurlan/iStockphoto, National Gallery: © NataliaBratslavsky/iStockphoto, the Hope Diamond: © Chip Clark/SmithsonianInstitution, PDA (re-use): © Gaston Thauvin/Stock.xchng, keyboard(re-use): © Tom van Beveren/Stock.xchng.

Briefing c: The 39Clues cards.

London, England 1: guard: ©tankbmb/iStockphoto, Tower of London: © madtwinsis/iStockphoto,British Flag: © Magnet Communications/iStockphoto, Houses ofParliament: © Steve Woods/stockxchng.com, crows: © DanCardiff/iStockphoto.

London, England 2: woman: ©Ryan McVay (RF)/Getty Images, Houses of Parliament: © SteveWoods/stockxchng.com, crows: © Dan Cardiff/iStockphoto.

London, England 3: laptop: ©CostinT/iStockphoto, Tavernier illustration: Douglas Smith/©Scholastic 2009, Houses of Parliament: © Steve Woods/stockxchng.com.

Versailles, France 1: Versailles: © XE13/fotolia, Versailles statue: © JosepAltarriba/Stock.xchng, “Jonah Wizard”: James Levin/© Scholastic 2008, group of photographers: © Pavel Losevsky/fotolia, cloudy sky:© ammi-z/Stock.xchng.com.

Versailles, France 2: Versailles: © XE13/fotolia, raven: © Lena Pautina/Stock.xchng.com,“Jonah Wizard”: James Levin/© Scholastic 2008, cloudy sky: ©ammi-z/Stock.xchng.com.

Washington, D.C., USA 1: parkbench: © xyno/iStockphoto, raven: © PhilipMacKenzie/stockxchng.com, lamp: © Fotosipsak/iStockphoto,Smithsonian Institution: © Smithsonian Institution, storm clouds: ©bkindler/iStockphoto.

Washington, D.C., USA 2: theHope Diamond: © Chip Clark/SmithsonianInstitution, background: © argus456/StockXpert.com.

Washington,D.C., USA 3a: park bench: ©xyno/iStockphoto, man in black shadow: pick up from 39 Clues BrandGuide, Smithsonian Institution: © Smithsonian Institution, stormclouds: © bkindler/iStockphoto, raven: © PhilipMacKenzie/stockxchng.com.

Washington, D.C., USA 3b: parkbench: © xyno/iStockphoto, paper texture: © Andrew C./Stock.xchng,grass background: © Agata Urbaniak/Stock.xchng,

Washington, D.C., USA 3c: parkbench: © xyno/iStockphoto, Smithsonian Institution: © SmithsonianInstitution, storm clouds: © bkindler/iStockphoto.

Washington, D.C., USA 4: laptop: © CostinT/iStockphoto, paper: © Cris DeRaud/Stock.xchng,seal: SJI Associates/© Scholastic 2009, woodbackground: © pixhook/iStockphoto, storm clouds: ©bkindler/iStockphoto, Smithsonian Institution: © SmithsonianInstitution.

St. Petersburg, Russia 1: mapof Russia: © wsfurlan/iStockphoto, Church of the Resurrection, St.Petersburg: © OnFilm/Stock.xchng.com, black ravens: © LenaPautina/Stock.xchng.com, smoke: © Meison/iStockphoto.

St. Petersburg, Russia 2: “Lilya Chernova”: © Purestock (RF)/Getty Images, hermitagemuseum in St. Petersburg: © Elena Bakhareva/fotolia, storm clouds: ©bkindler/iStockphoto, bench: © BJuCr/iStockphoto, purse (re-use): ©Ahmed Aboul-Seoud/Shutterstock, PDA (re-use): © GastonThauvin/Stock.xchng, PDA keyboard (re-use): © Tom vanBeveren/Stock.xchng, raven: © Philip MacKenzie/stockxchng.com.

St. Petersburg, Russia 3: St.Petersburg at night: © McSeem/StockXpert.com.

St. Petersburg, Russia 4: bankvault: © Mark Evans/iStockphoto, black leather sofa: ©Photoprince/iStockphoto, table: ©mandj98/iStockphoto, Lenin bust: ©bendis/iStockphoto, wallpaper: © Yuran/iStockphoto.

Clue: Bank vault: © MarkEvans/iStockphoto.

Mission 4: The Lucian Fort

Briefing 1: The 39 Cluescards, technology background: © VectorPro/iStockphoto.

Briefing 2: video: ©Scholastic 2009, technology background (re-use): © VectorPro/iStockphoto.

Briefing 3: envelope andbench: © Scholastic 2009, “Ian and Natalie Kabra”: James Levin/©Scholastic 2008, briefing page: © Scholastic 2009, Polaroid: ©Chromatika Multimedia / iStockphoto, yak: © koubatian/iStockphoto.

Kyrgvzstan 1: mountains: ©Evgeniy Meyke/iStockphoto, technology background (re-use): ©VectorPro/iStockphoto,

Kyrgvzstan 2a: hotel: © Digital Vision (RF)/Getty Images, bellhop: ©Red Chopsticks (RF)/ Getty Images.

Kyrgvzstan 2b: hotel (re-use):© Digital Vision (RF)/Getty Images, bellhop (re-use): © RedChopsticks (RF)/Getty Images.

Kyrgvzstan 3: door and handle:© MBCheatham/iStockphoto.

Note Book: red quilt: ©PeskyMonkey/iStockphoto, notebook: © duncan1890/ iStockphoto,pencil: © thesuperph/iStockphoto.

Budapest 1: Budapest, Hungary:© stevenallan/iStockphoto, technology background (re-use): ©VectorPro/iStockphoto.

Budapest 2: “Ian and NatalieKabra”: James Levin/© Scholastic 2008, Budapest parliament: ©Martin Child (RF) / Getty Images.

Budapest 3: crown jewels(re-use): © The London Art Archive/Alamy, magnifying glass:blackred/iStockphoto.

Airplane: airplane interior: ©R9_RoNaLdO/iStockphoto.

News: monitor: ©mnieves/iStockphoto, leather seat: © LoudRedCreative/ iStockphoto,video: © Scholastic 2009, cheerleader: © Photodisc Photography(RF)/Veer.

Chrissy Collins 1: field: ©epicurean/iStockphoto, technology background (re-use): ©VectorPro/iStockphoto.

Chrissy Collins 2: “ChrissyCollins”: © Photodisc Photography (RF)/Veer, football field andplayers: © Digital Vision (RF)/Veer, stadium crowd: © CezarPerelles/Stock.xchng.

Fort Knox: Fort Knox: © AdamTanner/Image Works.

Safe Cracking: vault: ©Chromatika/istockhoto.com.

Mission 5: The General’s Clue

Briefing 1: The 39 Cluescards, technology background: © VectorPro/iStockphoto.

Briefing 2: technologybackground (re-use): © VectorPro/iStockphoto, video: © Scholastic2009.

Briefing 3: background: ©Scholastic 2009, Simón Bolívar (pick up from card 92), “AlistairOh”: James Levin/ © Scholastic 2008, map: © gmutlu/iStockphoto.

Madrid 1a: Royal Palace inMadrid: © kelvinjay/iStockphoto.

Madrid 1b: wall and door: ©Tina Rencelj/iStockphoto, “Alistair Oh”: James Levin/©Scholastic 2008.

Madrid 2a: stone wall: © Carter Dayne/iStockphoto.

Madrid 2b: map: © NaturalWarp/iStockphoto.

Bogota 1a: Plaza de Bolívar:© Graham S. Klotz/Shutterstock.

Bogota 1b: Statue and Plaza deBolívar: © Jerry Koch/iStockphoto, “Jonah Wizard”: James Levin/© Scholastic 2008.

Bolivar’s Statue: wall(re-use): © Carter Dayne/iStockphoto, plaque: ©Andy445/iStockphoto.

Bogota 2a: “Jonah Wizard”:James Levin/ © Scholastic 2008, Plaza de Bolívar: © Graham S.Klotz/Shutterstock.

Bogota 2b: map: © NaturalWarp/iStockphoto.

Santa Marta 1a: Santa MartaCathedral: © traveler1116.iStockphoto.

Santa Marta 1b: SantaMarta Cathedral (re-use): © traveler1116/iStockphoto, soccerplayer: © RubberBall Selects(RF)/Alamy.

Santa Marta 1c: map (re-use):© Natural Warp/iStockphoto.

Caracas: Pantheon, Caracas(re-use): © Marion Kaplan/Alamy.

Mission 6: The Mad Scientist’s Clue

All Nodes: technology background: ©VectorPro/iStockphoto.

Briefing 1: the 39 Clues cards.

Briefing 2: video: © Scholastic 2009.

Briefing 3a: Tesla: © JGeorgiosArt/iStockphoto,Edison: © Jfillyfolly/iStockphoto, electronic diagram: ©Jcentauria/iStockphoto, computer: © CostinT/iStockphoto,electricity lightning effect: ©Scholastic.

Briefing 3b: computer: ©CostinT/iStockphoto, Hollywoodsign: © JLpettet/iStockphoto.

Hollywood a: “Leslie D. Mill”:© JJoshua Ets-Hokin (RF)/Getty Images, movie camera: ©Jkkgas/iStockphoto, spotlights: © Jxyno/iStockphoto, light: ©Jarsenik/iStockphoto, smoke and light: © Jc-foto/iStockphoto, studioceiling: © Jdt03mbb/iStockphoto, umbrella: © Jeggy900/iStockphoto,director's clapboard: SJIAssociates/© Scholastic 2009.

Hollywood b: “Leslie D. Mill”(re-use): © Joshua Ets-Hokin (RF)/Getty Images,light (re-use): © Jarsenik/iStockphoto, smoke and light (re-use): ©Jc-foto/iStockphoto.

EdisonNational Historical Park, New Jersey 1a: map(re-use): © Scholastic 2009.

Edison National Historical Park, New Jersey 1b: woman:© JImagemore Co., Ltd. (RF)/ Getty Images, Edison's lab: NationalParks Service, brick wall: © Jgaiamoments/iStockphoto, chair: ©Jjwblinn/iStockphoto, table: © JDon Nichols/iStockphoto, battery: ©JPavel Mikushin/Shutterstock, light socket:© Jwebking/iStockphoto.

Edison National Historical Park, New Jersey 1c: brickwall: © Jgaiamoments/iStockphoto, table: © JDonNichols/iStockphoto, battery: © JPavel Mikushin/Shutterstock.

Edison National Historical Park, New Jersey 2: tabletop: © Jdalton00/iStockphoto, old circuit board: ©Jcalvio/iStockphoto.

Edison NationalHistorical Park, New Jersey 3: lightsocket: © Jwebking/iStockphoto, brick wall: ©Jgaiamoments/iStockphoto, table: © JDon Nichols/iStockphoto.

Airport 1a: airport and suitcase: © JDAJ (RF)/Getty Images; "JonahWizard”: James Levin/ © Scholastic 2008,photographer with white shirt: © JLebedinski Vladislav/Shutterstock,photographer kneeling: © JGabi Moisa/Shutterstock, photographer inblack: © JAleksandar Kamasi/Shutterstock.

Airport 1b: airport: © JDAJ (RF)/Getty Images, "Jonah Wizard”:James Levin/ © Scholastic 2008.

Airport 2a: airport: © JDAJ (RF)/Getty Images, hand and cell phone: ©Kit Sen Chin/iStockphoto.

Airport 2b: map:© Scholastic 2009.

Croatia 1a: house: © JR. Fassbind/Shutterstock, clouds: ©Jbkindler/iStockphoto, the Holts”:James Levin/ © Scholastic 2008.

Croatia 1b: house: © JR. Fassbind/Shutterstock, “the Holts”:James Levin/ © Scholastic 2008.

Croatia 2a: cement wall and floor: © JValentin Agapov/Shutterstock, bookshelf: ©JFerenc Szelepscenyi/Shutterstock, chair: © JOlemac/Shutterstock,spider web: © Jimageshunter/Shutterstock.

Croatia 2b: cement wall and floor: © JValentin Agapov/Shutterstock, bookshelf: ©JFerenc Szelepscenyi/Shutterstock, chair: © JOlemac/Shutterstock,spider web: © Jimageshunter/Shutterstock, doorway: ©Joneword/iStockphoto.

Croatia 3a: room: © JPablo Scapinachis/Shutterstock, table: © JDaniloMoura/Shutterstock, coil glow: © iJnhauscreative/iStockphoto,picture frame: © JWinterling/iStockphoto, stains under frame: ©Jbelterz/iStockphoto, table legs: © JNikolay StefanovDimintrov/Shutterstock, spider web: © Jimageshunter/Shutterstock,electronic diagram: © Jcentauria/iStockphoto, technical equipment: ©Jjgroup/iStockphoto, vintage switch: © Jwebking/iStockphoto: coils:© Photodisc(CD/RF) via SJI Associates.

Croatia 3b: picture frame: © JWinterling/iStockphoto, cement wall and floor: ©JValentin Agapov/Shutterstock, electronic diagram: ©Jcentauria/iStockphoto, coil glow: ©inhauscreative/iStockphoto.

Mission 7: The Frozen Secret

Magic Box Game: © Scholastic 2010.

All Nodes: cellphone: ©Scholastic 2009.

Intro: the 39 Clues cards, technology background (re-use): ©VectorPro/iStockphoto.

Enter Code a: video: © Scholastic 2010.

Briefing: antique map ©nicoolay/iStockphoto, Sir John Franklin: © Heritage/The Image Works,naval ship: © The Granger Collection.

Library: man: JamesLevin/© Scholastic 2008 , empty reading room: ©photogl/iStockphoto, burrito: ©Scholastic2010 , binoculars: © Difydave/iStockphoto, huntingknife: © Merts /iStockphoto, fishing pole: ©EduardHarkonen/iStockphoto, boomerang: © rep0rter/iStockphoto, shipin a bottle: © MAEADV/Shutterstock, wood chair: ©jwblinn/iStockphoto, clock: © davex83/iStockphoto, arm chair: ©leezsnow/iStockphoto, desk: © xavigm/iStockphoto, frame: ©milosluz/iStockphoto, antique snowshoes: © sbossert/iStockphoto,stack of books: © LuisPortugal/iStockphoto, pile of books: ©aphrodite74/iStockphoto, file folders and mug: © DNY59/iStockphoto,cabinet: © SklepSpozywczy/iStockphoto, open book: ©Pokaz/Shutterstock, old books: © iSebastian/iStockphoto, old globe:© haveseen/iStockphoto, binoculars: © deepblue4you/iStockphoto, oldbooks: © Galushko Sergey/Shutterstock, old books: ©Crisma/iStockphoto, old book: © Pokaz/Sutterstock, antique compass:© Nikada/iStockphoto, skeleton: © gemenacom/iStockphoto, paper andwaste basket: © ogergo/iStockphoto, red kangaroo: ©ozflash/iStockphoto, architectural plan: © Anniecounie /iStockphoto,study: © DenGuy/iStockphoto, messy desk: © Ccolephoto/iStockphoto,desk in study: © wbritten/iStockphoto, reading room: ©photogl/iStockphoto, old compass: © Nikada/iStockphoto, quill andink: © Jim Barber/Shutterstock, weathered books: ©Yurchyks/Shutterstock, desk in library: © photogl/Shutterstock, oldstudying room with two leather armchairs and chess game: ©photogl/Shutterstock, leather couch: © photogl/Shutterstock, leatherarmchair: © Baloncici/iStockphoto.

Poem:cell phone, paper, ice pattern: © Scholastic2010.

Beechey Island a: antique map(re-use) © nicoolay/iStockphoto, Franklin graves and beach: © Bryanand Cherry Alexander/Arcticphoto, Lady Franklin: © National MaritimeMuseum/The Image Works.

Beechey Island b: Franklingraves and beach (re-use): © Bryan and Cherry Alexander/Arcticphoto.

Magic Puzzle Box: Franklingraves and beach (re-use): © Bryan and Cherry Alexander/Arcticphoto.

King Williams Island a: smallround rocks and close up of large rock (re-use): ©ericmichaud/iStockphoto.

King Williams Island b: smallround rocks and close up of large rock (re-use): ©ericmichaud/iStockphoto.

Sir Franklin’s Locker: chest: © darklord_71/iStockphoto, lock: © mrolands/iStockphoto,rock (re-use): ©ericmichaud/iStockphoto.

Mission 8: The Desert Sabotage

All Nodes: cellphone: ©Scholastic 2009.

Intro: technologybackground: © VectorPro/iStockphoto, the 39 Clues cards.

Briefing 1: video: ©Scholastic 2010.

Briefing 2a: laptop: ©CostinT/iStockphoto, Rosetta Stone and Napoleon painting: © WorldHistory Archive, “Katherine Cahill” illustration: Anna and ElenaBalbusso / © Scholastic 2009.

Briefing 2b: laptop (re-use):© CostinT/iStockphoto, Lawrence of Arabia: © The GrangerCollection, citadel in Cairo (re-use): © DavidGarry/iStockphoto,Egyptian Hieroglyphs (re-use): © StijntS/Shutterstock,technologybackground (re-use): © VectorPro/iStockphoto.

Cairo: citadel in Cairo: ©DavidGarry/iStockphoto, “Ian Kabra”: James Levin/ © Scholastic 2008.

Bridge: “Ian Kabra”: JamesLevin/© Scholastic 2008, Roda Island Bridge Cairo Egypt: ©gezmen/Alamy.

Sennari House 1a: stairs andarch: © MiTi/Shutterstock, architectural images: ©andesign101/Shutterstock.

Sennari House 1b: tunnel: ©PKM1/iStockphoto, book: © BorisVian/Shutterstock, pineapple sidetable: © James M Phelps, Jr./Shutterstock.

Sennari House 2a: well atcastle: © Dodatalla/iStockphoto, rope and knot: ©JuGa/Shutterstock.

Sennari House 2b: “IanKabra”: James Levin/© Scholastic 2008, tunnel: ©PKM1/iStockphoto, book: © BorisVian/Shutterstock, pineapple table: ©James M Phelps, Jr./Shutterstock.

Ekat Stronghold 1: sunset inCairo: © Nabeel Turner/Getty Images, grappling hook: ©3renderings/Shutterstock

Ekat Stronghold 2a: rooftopview of Cairo: © Comstock Images (RF)/Jupiter Images.

Ekat Stronghold 2b: computerserver: © Photosani/Shutterstock, server room and devices: © FerencCegledi/Shutterstock.

Ekat Stronghold 3: robot dogillustration: Headcase Design/© Scholastic 2010, Metal background: ©CGTextures.

Ekat Stronghold 4a: hi techcorridor: © rook76/Shutterstock, old book: © PabloCaridad/Cutcaster.

Ekat Stronghold 4b: robot dogillustration: Headcase Design/© Scholastic 2010.

Ekat Stronghold 4c: old book:© Pablo Caridad/Cutcaster.

Mission 9: The Cliffhanger Clue

Intro: technologybackground: © VectorPro/iStockphoto, the 39 Clues cards.

Briefing a: video: © Scholastic 2010.

Briefing b: cell phone: © Scholastic 2009, Josephine Baker: HultonArchive/ Getty Images. Josephine BakerTM is a trademark ofthe Estate of Josephine Baker/www.CMGWorldwide.com.

Briefing c: map (re-use): © Scholastic 2009.

Lisbon, Portugal 1a: Lisbon: ©Andriy Bozhok/Shutterstock.

Lisbon, Portugal 1b: NationalTheatre, Lisbon: © Javier Larrea (RF)/agefotostock, Portuguese flag:© Carlos Caetano/Shutterstock, “Jonah Wizard”: James Levin/©Scholastic 2008, Geraniums: © Elena Elisseeva/Shutterstock, redcloth: © frescomovie/Shutterstock, tram: © karnizz/Shutterstock,musical notes: © Kundra/Shutterstock.

Lisbon, Portugal 2 and 3: vintage photo camera: © oriontrail/Shutterstock, music poster, NYCParks, 1936: Library of Congress, old bass drum: © ColossusCopyright Protected/Media Bakery, pocket cornet: © ChrisStock/Lebrecht/The Image Works, double bass: © ChrisStock/Lebrecht/The Image Works, vintage fan: © RichKoele/Shutterstock, feathered mask: © Eline Spek/Shutterstock,flute: © dragon_fang/Shutterstock, top hat: © HeathDoman/Shutterstock, mountain boots: © swinner/Shutterstock, cello: ©hamurishi/Shutterstock, violin: © Ivantsov Ruslan/Shutterstock,attic: © igor kisselev/Shutterstock, old books: © R. Gino SantaMaria/Shutterstock, brass horns: © Clive Barda/ArenaPal/Topham/TheImage Works, flute in case: © Kruglov_Orda/Shutterstock, perfumebottle with feathers: © Kateryna Dyellalova/Shutterstock, drum: ©Vlue/Shutterstock, boxes: © Picsfive/Shutterstock, clarinet: © KenHurst/Shutterstock, suitcases: © ejwhite/Shutterstock, viola: ©mphot/Shutterstock, old books: © Izaokas Sapiro/Shutterstock,violin: © bogdan ionescu/Shutterstock, antique phone: © South12thPhotography/Shutterstock, wooden spools: © John Holst/Shutterstock,battle helmet: © Olemac/Shutterstock, rope: ©blackpixel/Shutterstock, vintage microphone: © Elnur/Shutterstock,damaged cornet: © Chris Stock/Lebrecht/The Image Works, telescope: ©Media Bakery.

Lisbon, Portugal 4a: Camara deLobos Harbour, Madeira, Portugal: © Robert Harding (RF) /GettyImages, dock: © David Pruter/Shutterstock, sign: ©J.D.S./Shutterstock, coiled rope: © Dedyukhin Dmitry/Shutterstock.

Lisbon, Portugal 4b: fishingboats in harbor: © Bernie Epstein/Alamy, fisherman: © C SquaredStudios/Photodisc (RF)/Getty, shack with buoys: © S. R.Maglione/Shutterstock, life jacket: © Veniamin Kraskov/Shutterstock,dock: © David Pruter/Shutterstock, antique life buoy: © MargoHarrison/Shutterstock, ticker screen in stock exchange: ©Media3d/Shutterstock, hard drive with data cable: © JakobPavlinec/Shutterstock, satellite: © mmaxer/Shutterstock, medicalendoscopy equipmet: © Alexey Averiyanov/Shutterstock: audiowaves: ©Ivan Cholakov/Shutterstock, dragon art with yin yang circle: ©Boguslaw Mazur/Shutterstock, infrared security camera: © DarioSabljak/Shutterstock, 5 security cameras in group: © FrankJr./Shutterstock, security camera: © Iznogood/Shutterstock, neonsigns: © CGTextures.

Lisbon, Portugal 5: Fishingboat high angle: © Media Bakery,wood pier: © CGTextures,wood pier: © CGTextures, soil: © CGTextures, water and person inboat: © Scholastic 2010, metal detector: © Scholastic 2010, ropes:© kevinmayer/iStockphoto, ropes: © kevinmayer/iStockphoto.

Marrakech, Morocco 1a: Marrakech skyline: ©Simon McBride/The Image Works.

Marrakech, Morocco 1b: EastGate, Marrakech, Morocco: © Philip Lange/Shutterstock.

Marrakech, Morocco 2: greybricks: © CGTextures, old paper: © Mikhail/Shutterstock, folds inpaper: © CGTextures.

Marrakech, Morocco 3: “MadisonHolt”: James Levin/© Scholastic 2008, Turkish clothing: ©Orhan/Shutterstock, East Gate, Marrakech, Morocco: © PhilipLange/Shutterstock.

Marrakech, Morocco 4a: trainstation: © Charles O. Cecil/Alamy, sign: © Le Do/Shutterstock,“Reagan Holt”: James Levin/© Scholastic 2008.

Marrakech, Morocco 4b: map(re-use): © Scholastic 2009.

Moroccan Coast 1: rockycliffs: © Danita Delimont/Alamy.

Moroccan Coast 2: lock onrope: © lebanmax/iStockphoto, girl rock climbing: © MarilynBarbone/Shutterstock, hunting knives: © 3dfoto/Shutterstock, lever:© CGTextures.

Mission 10: End Game

Game Visuals: Mah Jong Cube, Basketball, Hacker, and Spliterature Games: ©Arkadium 2010.

Puzzle 1a: Tikal Pyramid: ©Travel Ink/Getty Images.

Puzzle 1b: brick wall: ©CGTextures, grass: © CGTextures, a clump of tall grass: ©Photoroller /Shutterstock, tall grass: © Slobodan Zivkovic/Shutterstock.

Quiz: tunnel: ©Terryfic3D/iStockphoto, metal door 1: © CGTextures, metal door 2: ©CGTextures, laptop: © CostinT/iStockphoto, stones: ©Osa/Shutterstock, combination lock: © Harper/Shutterstock, vaulteddoor lock: © Spectral-Design/Shutterstock.

All 39?: tunnel: ©Terryfic3D/iStockphoto, metal door 1: © CGTextures, metal door 2: ©CGTextures, laptop: © CostinT/iStockphoto, stones: ©Osa/Shutterstock, combination lock: © Harper/Shutterstock, vaulteddoor lock: © Spectral-Design/Shutterstock.

Accept Mission: concrete walland cobblestone: © optimarc/Shutterstock, dark room with spotlights:© keren-seg/Shutterstock, hi tech background: © LeonART/Shutterstock, passport: © Scholastic 2009, airline ticket: ©Nicemonkey/Shutterstock, table: © CGTextures, table: © CGTextures,stones: © Osa/Shutterstock, PDA: SJI Associates/ © Scholastic 2009,“Dan Cahill” video: © Scholastic 2010.

Menu: airport (re-usefrom PC 430) : © Eric Gevaert/Shutterstock, passport: © Scholastic 2009, location icons: ©Art Explosion.

Janus a: map (re-use): ©Scholastic 2009.

Janus b: Moai, Easter Island:© ribeiroantonio/Shutterstock.

Janus c: Moai statues: ©modestlife/Shutterstock, “Jonah Wizard”: James Levin/©Scholastic 2008.

Janus d: clump of grass: ©Photoroller/Shutterstock, tall grass vector: © SiobodanZivkovic/Shutterstock, rocks: ©LampLighterSDV/Shutterstock, wall andgrass: © modestlife/Shutterstock, dollar sign necklace: © ScottRothstein /Shutterstock, diamond bracelet: © Sarah Holmlund/Shutterstock, standstone block: © Don Nichols/iStockphoto.

Thomas a: map (re-use): ©Scholastic 2009.

Thomas b: Madagascar pastures:© Cybermama/iStockphoto.

Thomas c: “Hamilton Holt”:James Levin/© Scholastic 2008, basketball: © RF/CD Objects viaScholastic, lemur: © Roine Magnusson/Getty Images, 2 lemurs lookingto side: © Keren Su/Getty Images, wooden ladder: ©khouwes/iStockphoto, dirt road and baobab trees: © BrunoMorandi/Getty Images.

Thomas d: baobab trees: ©Mazerand/iStockphoto, standstone block: © Don Nichols/iStockphoto,standing stones: © Lewis King/iStockphoto, Moorland Standing stone:© Paula Connelly/iStockphoto, basketballs: © RF/CD Objects viaScholastic.

Ekaterinaa: map (re-use): © Scholastic 2009.

Ekaterina b: burned downhouse: © Tony Tremblay/iStockphoto, birds: © MervePoray/Shutterstock.

Ekaterina c: “Alistair Oh”:James Levin/© Scholastic 2008, headphones with microphone: ©Kikovic/Shutterstock, electronic technology inside control room: ©zhu difeng/Shutterstock, control room: ©PozitivStudija/Shutterstock, data center: © ep_stock/Shutterstock,computers behind the glass: © terekhov igor/Shutterstock, tacoplate: © 3445128471/Shutterstock, nacho chips: © Danny Smythe/Shutterstock, utensils on a plate: © Elnur/Shutterstock, computermouse: © Bragin Alexey/Shutterstock, cup filled with pencils, pensand scissors: © RoJo Images/Shutterstock, notebook: ©urfin/Shutterstock, blue patterns: © alean/Shutterstock, handidentity screen: © Photosani/Shutterstock, glowing light:© IvanCholakov/Shutterstock, electronics: © CGTextures, crests: SJIAssociates/ © Scholastic 2009, trash can full of paper: © stocksnapp/Shutterstock.

Lucian a: map (re-use): ©Scholastic 2009.

Lucian b: United NationsBuilding: © Directphoto.org/Alamy.

Lucian c: spy room: © GregPease/Getty Images, “Natalie Kabra”: James Levin/© Scholastic 2008, burned down house (re-use): © Tony Tremblay/iStockphoto, Moai,Easter Island (re-use): © ribeiroantonio/Shutterstock, UnitedNations Building (re-use): © Directphoto.org/ Alamy, telephone: ©urfin/Shutterstock, flags of France: © Mark Gabrenya/Shutterstock,flags of Germany: © Mark Gabrenya/Shutterstock, laptop: ©vovan/Shutterstock, electronics: © CGTextures.

Lucian d: “Ian and NatalieKabra”: James Levin/© Scholastic 2008, landscape: © CGTextures,“Saladin”: James Levin/© Scholastic 2008, “Reagan and MadisonHolt”: James Levin/© Scholastic 2008, mountains: © CGTextures,man in black: © Beth Dixson/Getty Images, Ayers Rock: ©imagebroker / Alamy , “Amy and Dan Cahill”: James Levin/©Scholastic 2008, Aerobics person (Mary Todd): © Radius Images(RF)/Photolibrary, painting “Thomas Cahill”: Anna and ElenaBalbusso / © Scholastic 2009, painting “Luke Cahill”: Anna andElena Balbusso / © Scholastic 2009, painting “Katherine Cahill”:Anna and Elena Balbusso / © Scholastic 2009, painting “JaneCahill”: Anna and Elena Balbusso / © Scholastic 2009, “IrinaSpasky”: James Levin/© Scholastic 2008, Eiffel Tower: © AlexanderChaikin/Shutterstock, “Saladin”: James Levin/© Scholastic 2008,lemurs: © Mirek Srb/Shutterstock, Shaka Zulu: Private Collection/©Look and Learn/Bridgeman, Toyotomi Hideyoshi Japan: Library ofCongress, “Jonah Wizard”: James Levin/© Scholastic 2008,Anastasia: Library of Congress, “Grace Cahill”: James Levin/©Scholastic 2008, George Mallory: © The Granger Collection, New York,Eiffel Tower: © Alexander Chaikin/Shutterstock, “Madeleine Cahill”illustration: © Anna and Elena Balbusso, Olivia infernoillustration: © Kyle Hotz, “Hope and Arthur Cahill”: © FionaSarn, Shakespeare: © SuperStock/Getty Images, Mozart on piano:Library of Congress, “William McIntyre”: James Levin/©Scholastic 2008, man in black: © Beth Dixson/Getty Images, AyersRock: © imagebroker / Alamy , RedSquare: © karnizz/Shutterstock, Ned Starling: © Image SourcePhotography (RF)/Veer/Corbis, Big Ben: © S. Borisov/Shutterstock,Venice: © Sailorr/Shutterstock, submarine: SJI Associates/©Scholastic 2009, burrito: James Levin/© Scholastic 2008, musicalnotes: © Scholastic 2010, Nellie: © Vstock (RF)/Alamy, silver snakenosering: © Kulish Viktoriia/Shutterstock, color black: ©Scholastic 2010, color red: © Scholastic 2010, “Holts” injogging suits: James Levin/© Scholastic 2008, Jade necklace: © DebCohn-Orbach/ Scholastic 2010, “Alistair's” cane: James Levin/©Scholastic 2008, “Irina Spasky's” nails: James Levin/©Scholastic 2008, close up of eye: © Digital Vision (RF)/ GettyImages, amber with bug: © Vaughan Fleming / Photo Researchers, Inc.,map and bermuda triangle: © Bettmann/Corbis, yacht: © DavidWoolley/Getty Images, Nellie: © Vstock (RF)/Alamy, Maleia Kalanisurfer: © Peter Sterling/Getty Images, man in black: © BethDixson/Getty Images, Ayers Rock: © imagebroker/ Alamy , Emperor palace: © Andrey Shchekalev/Shutterstock,Hollywood and Vine sign: © Mark A. Johnson / Alamy, “Cora Wizard”:© Fancy Photography(RF)/Veer/Corbis, Big Ben: © S.Borisov/Shutterstock, Marie Curie illustration: Kanako Damerum andYuzuru Takasaki/© Scholastic 2009, Annie Oakley: © The GrangerCollection, Houdini: Library of Congress, Winston Churchill: Libraryof Congress, Thomas Edison illustration: Kanako Damerum and YuzuruTakasaki/© Scholastic 2009, Victoria Falls: © Photos.com(RF)/Jupiterimages/Getty Images, Rosetta Stone: © World HistoryArchive, Venice at night: © Seet/Shutterstock, Broderick Wizard: ©Dynamic Graphics (RF)/Jupiter Images/Getty Images, Great Wall ofChina: © xxz114/iStockphoto, Mt. Fuji: © XAOC/Shutterstock, Bae Ohillustration: Owen Brozman/ © Scholastic 2009, “Grace Cahill”:James Levin/© Scholastic 2008, Mt. Everest: ©Momentum/Shutterstock, Mariana trench: © Neil Brigham/ © Scholastic2009, Napoleon on horse: © The Granger Collection, New York, GeorgeWashington: Library of Congress.

End: airport: © EricGevaert/Shutterstock, PDA: © Scholastic 2009, “Dan Cahill”video: © Scholastic 2010.

Mission 11: Behind Enemy Lines

Mission Navigation Menu: Card 254, Card 255,Card 256, Card 257, Card 258, Card 259.

All Nodes: cellphone: © Scholastic 2009, "Ian Kabra": KenKarp / © Scholastic 2011.

Secret:Gideon's Ring: school hallway andlockers: © Gordon Swanson/Shutterstock, electronic technologyinside control room (re-use): © zhu difeng/Shutterstock, controlroom (re-use): © PozitivStudija/Shutterstock, data center (re-use): © ep_stock/Shutterstock, computers monitors (re-use): © terekhovigor/Shutterstock, ring: SJI Associates / ©Scholastic 2010, "Casper": © Jeff Gelber, helicopter: ©Stephen Power/Alamy, Wyoming map: © adam.golabek/ Shutterstock,sky: © Photodisc (RF/CD) viaScholastic, surveillance video image:Public Domain, check: © Scholastic 2011, "Casper's" face:© Jeff Gelber, ski patrol outfit: © Norbert Eisele-Hein/Alamy,Matterhorn, Switzerland (re-use): © Strider/Shutterstock.

Secret: Footprint: ski chalet: © Carrie Brown/Yorke Brown, reuse of Card 256, footprintin snow (re-use): © Dudarev Mikhail/Shutterstock, texturedbackgrounds: © CGTextures.

Agent: The Superdweeb: fireplace interior: © Georgios Kollidas/Shutterstock, stonefireplace and cabin interior: © Ryan McVay/Getty Images, ashes: ©CGTextures, wood trashcan: © CGTextures, shreds of paper: ©CGTextures, shreds of paper: © Scholastic 2011, reuse of Card 255,Cathedral Saint Pierre (re-use): © Rudy Mareel/Shutterstock, hat(re-use): © Phase4Photography/ Shutterstock, men's scarf (re-use):© Maksim Striganov/Shutterstock,“Dan Cahill": James Levin/ © Scholastic 2008, "TopSecret" text: © Scholastic 2009, wood table: © CGTextures,ashes : © CGTextures, brickbackground: © CGTextures, burned paper edges: © Caleb Kimbrough viaBittbox, “Amy Cahill":James Levin/ © Scholastic 2008, winterjacket (re-use): © Razvan Chirnoaga/Shutterstock, Matterhorn,Switzerland (re-use): © Strider/Shutterstock.

Agent: The Newest Agent: "Natalie Kabra": KenKarp / © Scholastic 2011, airport interior:© Richard Baker Heathrow/Alamy, apartment building exterior: ©r.nagy/Shutterstock, apartment buzzer: ©plastic buddha/iStockphoto,apartment buzzer closeup (re-use): © plasticBuddha/iStockphoto.

Secret: Vesper's Armor: curtain, © CGTextures, rug: © CGTextures, wooden floor: ©CGTextures, wallpaper: © CGTextures, tree: © CGTextures, paintingframes: © CGTextures, castle painting: © Maugli/Shutterstock, housewith tree painting: © Maugli/Shutterstock, snowy walkway with housespainting: © SandraCunningham/Shutterstock, suit of armor (re-use): ©Shiva/Shutterstock, red feather (re-use): © IvanPonomarev/Shutterstock, reuse of Card 258, intercom: ©asterix0597/iStockphoto, armor illustration : Rainne Wu/ © Scholastic 2011 ,wallpaper: ©CGTextures, cork background: © CGTextures, wooden frame: ©CGTextures, arrow label (re-use): © Scholastic 2011, pushpins(re-use): SJI Associates/ © Scholastic 2009, photo of man: KenKarp / © Scholastic 2011, bridgein Tokyo (re-use): © Yury Zap/Shutterstock, map: © Scholastic2009, notepad: © Bittbox, arrow label (re-use): © Scholastic 2011,camel (re-use): © irabel8/Shutterstock, bridge (re-use): ©gezmen/Alamy, "Amy and Dan Cahill": James Levin/©Scholastic 2008, notepad: © Bittbox, "Alistair Oh": JamesLevin/© Scholastic 2008, Boston Public Gardens photos (re-use): ©Chee-Onn Leong /Shutterstock, arrow label (re-use): © Scholastic2011.

Secret: Vesper Transmission: notebook: © Scholastic 2011, London underground: © AlistairLaming/Alamy, paperclip (re-use): © rusm/iStockphoto, notebook: ©Scholastic 2011, paper: © Scholastic 2011, drawings in notebook: ©Scholastic 2011, tape: © CGTextures.

Clue Reveals

CR 01: © Lingbeek/iStockphoto; ©nathanphoto/iStockphoto; ©arlindo71/iStockphoto; © aurelm/iStockphoto.

CR 02: © Branko Miokovic/iStockphoto; © Stanislav Fadyukhin/iStockphoto; ©nicholas belton/iStockphoto; © David Freund/iStockphoto.

CR 03: © rook76/Shutterstock; ©Pablo Caridad/Cutcaster; ©Scholastic 2009.

CR 04: © Ferderic B/Shutterstock; © Willpower/Shutterstock; ©Veni/iStockphoto.

CR 05: © Photodisc (CD/RF) via SJI Associates; ©Pablo Scapinachis/Shutterstock; © Danilo Moura/Shutterstock; ©inhauscreative/iStockphoto; © Winterling/iStockphoto; ©belterz/iStockphoto; © Nikolay Stefanov Dimintrov/Shutterstock; ©imageshunter/Shutterstock; © centauria/iStockphoto; ©jgroup/iStockphoto; © webking/iStockphoto.

CR 06: © Pattie Steib/Shutterstock.

CR 07: © terekhov igor/Shutterstock; © yampi/Shutterstock; © XAOC/Shutterstock; © grybaz/iStockphoto; ©Alexander Chaikin/Shutterstock; © 2happy/Shutterstock; ©kotomiti/Shutterstock; © Robert Davies/Shutterstock; ©Zaporozhchenko Yury/Shutterstock; © Khosrov Hakobyan/Shutterstock; ©CGTextures; © digihelion /iStockphoto.

CR 08: © Norbert Wu/National Geographic; ©Fotowan/Shutterstock; © TamaraKulikova/Shutterstock.

CR 09: © Tibor Bognar/Alamy; © John PeterPhotography/Alamy; © Vladimir Piskunov.

CR 10: © Alex Staroseltsev/Shutterstock; © TheGranger Collection; © kodachrome25/iStockphoto; © suti/iStockphoto; © Dario Sabljak/Shutterstock; © pavila/Shutterstock; ©ericmichaud/iStockphoto; © goinyk/iStockphoto; © The PrintCollector/Heritage/The Image Works; © National Maritime Museum,London/The Image Works.

CR 11: © Argus/Shutterstock; ©zphoto/Shutterstock; © Bettmann/Corbis: © GunnarPippel/Shutterstock; © Vadim Volodin/Shutterstock; © Map Resources; © Alessio Ponti/Shutterstock.

CR 12: © Olga Lipatova/Shutterstock; © AdamGryko/Shutterstock; © Michael Travers/Cutcaster.

CR 13: Xonkdesign/iStockphoto; Schematic/©Scholastic 2009.

CR 14: © Photodisc (RF/CD) via SJI Associates; ©Sam Radion/Stock.xchng; Schematic/©Scholastic 2009.

CR 15: ©Maksim Shmeljov/iStockphoto.

CR 16: © snow koala/iStockphoto; © KCline Photography/iStockphoto; © FMNG/ iStockphoto; All-Kind-ZAPhotography/iStockphoto; © Jolin/iStockphoto; © angelo elefante/iStockphoto, © Maksim Shmeljov/iStockphoto; © Tonchik1981iStockphoto; © Boris Yankov/iStockphoto; © apcuk/iStockphoto.

CR 17: © Voronin76/Shutterstock; © AlexanderIlin/Shutterstock; © Eky Chan/Shutterstock; © John Solie/Cutcaster; © Olemac/Shutterstock.

CR 18: © Scholastic 2009.

CR 19: © Momentum/Shutterstock; © Andrew N.Ilyasov/Shutterstock; © CGTextures, ©MsLightBox/iStockphoto; ©Ivonne Wierink/Shutterstock; © James Morgan/Shutterstock.

CR 20: © Factoria singularfotografia/Shutterstock; © cyrrpit/Shutterstock; Cynthia VonBuhler/© Scholastic 2009; © Sergey Prygov/Shutterstock.

CR 21: © wwing/iStockphoto; © DolnikovDenys/Shuttestock; © Deb Cohn-Orbach; ©Rolandino/Shutterstock; snake nose ring: ©Scholastic 2009.

CR 22: © Poula Thorsen/iStockphoto; ©rotofrank/iStockphoto; © Uros/iStockphoto, © da-kuk/iStockphoto; © Brendan Hunter/iStockphoto; Bill Graham/©Scholastic 2010; © tirc83/iStockphoto.

CR 23: © Hogne Botnen Totland/iStockphoto; NathanHenry Design/© Scholastic 2009/© Scholastic 2009; 1939 New YorkCity Subway Map courtesy of New York Transit Museum and used withpermission; © Horned_Rat/iStockphoto.

CR 24: © optimarc /Shutterstock; © RamonBerk/Shutterstock; © Graham S. Klotz/Shutterstock; © GeorgiosKollidas/Shutterstock; ©Rapid Eye Media/iStockphoto, © JohnLindsay-Smith/Shutterstock; © Nico Smit/iStockphoto; ©nullplus/iStockphoto; © Jeremy Richards/iStockphoto; © PhotoSky 4tcom/Shutterstock; © Elzbieta Sekowska/Shutterstock.

CR 25: © Gavin Hellier/Getty Images.

CR 26: © lubilub/iStockphoto; ©Dutchy/iStockphoto; © preconscious/iStockphoto; ©EscoLux/iStockphoto; © StushD80/iStockphoto; © savoia/iStockphoto; © Nemo1024/iStockphoto; © paulfrichards/iStockphoto; ©lucato/iStockphoto; © walrusmail/iStockphoto; ©gioadventures/iStockphoto; © rfwil/iStockphoto; ©mseidelch/iStockphoto; © graemo/iStockphoto; ©tulcarion/iStockphoto.

CR 27: © Jeff Gynane/Shutterstock; ©Fotowan/Shutterstock; © Topfoto/TheImage Works; © Amy Johansson/Shutterstock.

CR 28: © Photodisc (RF/CD) via Scholastic.

CR 29: © CGTextures; © Dorling Kindersley/GettyImages; © Adam Golabek/Shutterstock; © Popkov/Shutterstock; ©Carmelo Gil/iStockphoto; © Albert Nowicki/iStockphoto; ©MBPhoto/iStockphoto; © Birgit Reitz-Hofmann/Cutcaster.

CR 30: © Alfredo Cerra/Shutterstock; © AmyNichole Harris/Shutterstock; © modestlife/Shutterstock; © TeoDominguez/Shutterstock; © serengeti130/iStockphoto; ©aleaimage/iStockphoto.

CR 31: © danderson107/iStockphoto.

CR 32: © ProArtWork/iStockphoto; ©PockyPocky/iStockphoto; © mevans/iStockphoto; ©bmcent1/iStockphoto; © Klubovy/iStockphoto.

CR 33: © Robert Harding (RF) /Getty Images; ©dra_schwartz/iStockphoto.

CR 34: ©Adam Tanner/The Image Works; © lubilub/iStockphoto, ©Dutchy/iStockphoto; © preconscious/iStockphoto; ©NickS/iStockphoto, © EscoLux/iStockphoto; © StushD80/iStockphoto; ©domin_domin/iStockphoto,© walrusmail/iStockphoto; ©xyno/iStockphoto.

CR 35: © AbleStock.com (RF)/Jupiter images; ©(RF) Photo Library.

CR 36: © Trek Holidays/iStockphoto; ©duncan1890/iStockphoto; © da-kuk/iStockphoto; © rimglow/iStockphoto.

CR 37: © Bildarchiv Preussischer Kulturbesitz/ArtResource, NY; © robas/iStockphoto; © Robert Kacpura/iStockphoto; ©izusek/iStockphoto© artefy/iStockphoto; © Pietus/iStockphoto.

CR 38: © foodfolio/Alamy; © wolfgangstrobinger/iStockphoto; © Ivan Cholakov/iStockphoto; © PauloFerreira/iStockphoto; © phlegma/iStockphoto, © OzgurDonmaz/iStockphoto; © Andrea Gingerich/iStockphoto; © OzgurDonmaz/iStockphoto; © Sharon Metson/iStockphoto; © DorusOerlemans/iStockphoto; © Anobis/Shutterstock; ©Paul Chesley.

CR 39: © Holger Mette/Shutterstock; © PavelCheiko/Shuttesrstock; © Birute Vijeikiene/Shutterstock; ©Maksymilian Skolik/Shutterstock.

Music

Mission 7: spying game: © snakestock/iStockaudio ,tracking the target: © MUX/iStockaudio.

Mission 8: science andtechnology: © szalonyKP/iStockaudio ,desert rat: © xunyuk/iStockaudio ,Anthem of Eastern Empire-zither and choir: © MulvadMusic/iStockaudio ,tales of Arabia: © bononiasound/iStockaudio ,astral warrior: © JohnnyPepperonny/iStockaudio ,swoosh: © man/freesound.org, cymbalswish long: © makgia/freesound.org,frost lobby: © patchen/freesound.org.

Mission 9: matador: © PumpArtist_55098/iStockaudio ,desert trek: © xunyuk/iStockaudio ,one-eyed cat: © Pete Levin/Getty,number 158: © Tom Phillips/obtmusic,airplane sound: © LG/freesound.org.

Mission 10: Final Chance: ©JohnnyPepperony/iStockaudio ,Taiko Storm – Loop: ©SteveNossiter/iStockaudio ,Door slam: © HerbertBoland/freesound.org, slide: ©dkristian/freesound.org, Morseattack: ©suonho/freesound.org, airport: ©pete668/freesound.org, morning sounds: ©reinsamba/freesound.org, wind: © ERH/freesound.org, radiointerference: © cognito perceptu/freesound.org,

Mission 10 End Game Video:Disarming the Bomb: © nmusic/iStockaudio.

Mission 11:Undercover audiotrack: © MUX/iStockaudio, Inspector Bass: © KenShorlev/iStockaudio, Stealth mode: © Isaac Vail/iStockaudio, RunningHard Surface: © bevangoldswain /freesound.org, GeorgeBuzzer: ©nofeedbak /freesound.org, JacobsLadderSingle2: © Halleck/freesound.org, Sounds For Earthquakes – Metal: © rutgermuller/freesound.org, Hubcap1: © snardin42/ freesound.org.

DigitRewards

DR 1 Surveillance Camera: graveyard in fog: © Arlene Jean Gee/Shutterstock, alley:© John Foxx/Getty Images, alley 2: © Jeff Spielman/Getty Images,graveyard in night mist: © Don Farrall/Photodisc (RF)/Getty Images,Piazza del Duomo: © Scala/Art Resource, Piazza del Campo: © AngeloCavalli/Getty Images, Church of Sainte Marie Madeleine: ©Maremagnum/Photographer's Choice/Getty images, church and plaza: ©Michael Trevillion/Trevillion Images, engraved armor of Henry VIII: ©The Board of Trustees of the Armouries/Heritage Image Partnership,F-22 Raptor aircraft: © Tech. Sgt. Mikal Canfield/U.S. Air Forcephoto.

DR 2 Dan Cahill: Beacon Hill, Boston: © Liz Leyden/iStockphoto, entrance to LouvreMuseum: © Lazar Mihai-Bogdan/Shutterstock, City Hall, Philadelphia:© Nancy Louie/Shutterstock, “Dan Cahill”: James Levin/©Scholastic 2008.

DR 3 Catacombs: Paris Catacombs: © Matthew Whittle/iStockphoto, prehistoric man: ©Sedar Yagci/istockhoto.com, skulls and bones: © SebastienWindal/iStockphoto, skulls and bones: © GA Photography/JupiterImages, skulls: © GA Photography/Jupiter Images.

DR 4 Titanic: Titanic wreckage: © Emory Kristof/National Geographic ImageCollection, clothesline: © Kenneth Zirkel/iStockphoto.

DR 6 Thomas Jefferson: cathedral: © Bildarchiv Monheim GmbH/Alamy.

DR 7 Maria Marapao: beach: © javarman/Shutterstock, denim and backdrops: © Photodisc(RF/CD) via SJI Associates, stomach and hands: © Rubberball (RF/CD)via SJI Associates, wall texture: © naphtalina/iStockphoto, books: ©Rob Melnychuk/Digital Vision (RF)/Getty Images.

DR 8 Ophir Dhupam: “Ophir Dhupam”: © PhotosIndia (RF)/Getty Images.

DR 9 Harry Houdini: Houdini images (both): © The Granger Collection.

DR 10 Flying Ace: book:© Roger Kirby/Stock.xchng.

DR 11 Rembrandt's Secret: illustration: Kirk Caldwell/© Scholastic 2009, woodbackground: © Salva Barbera/Stock.xchng.

DR 12 Taj Mahal: mosque entryway: © Jason Edwards/Getty Images, Taj Mahal: © TravelInk/Getty Images, Taj Mahal side view: © Joanna McCarthy/GettyImages, Taj Mahal Exterior details: © Walter Bibikow/Getty Images.

DR 13 Frankenstein: paper: © Gregory John Zamets/Stock.xchng.

DR 14 Marie Antoinette: illustration: Craig Spearing/© Scholastic 2009, wallpaper: ©Digital Textures (RF/CD) via SJI Associates.

DR 15 Telegram: old paper: ©Marija/Stock.xchng

DR 16 Eagle Eye: illustration: Patty Harris/© Scholastic 2008.

DR 19 Monument Valley: ball oftwine: © Franck Fotos, Inc., Golden Gate Bridge: © CelsoDiniz/Shutterstock, “the Holts”: James Levin/ © Scholastic 2008.

DR 21 Lan Nguyen: paper andillustrations:© Scholastic.

DR 22 Rocketboard: computerdesktop: © Scholastic.

DR 24 Lilya Chernova: “Lilya Chernova”: © Image Source Photography (RF)/Veer, pinkshoes: © Digital Vision Photography (RF)/Veer, lockers: © DigitalVision (RF)/Getty Images, “Lilya Chernova”: © Image Source(RF)/Getty Images, party crowd: © OdilionDimier (RF)/Getty Images.

DR 25 Astronomer Royal: pen and ink: © alxm/StockXpert.

DR 26 Marie Curie: Pierre Curie: © Ullstein Bild/The Granger Collection.

DR 27 Loch Ness: underwater view: © Nahimoff/Shutterstock, Nessie Lives illustration:Angela Martini/© Scholastic 2009.

DR 28 CERN: aerialview of CERN: © CERN/Photo Researchers.

DR 29 Bermuda Triangle: Bermuda Triangle: © NASA.

DR 30 The Hypnotist: hypnotist poster: © Mary Evans Picture Library, hypnotist andclient: © Newscom, papers: © Sophie/Stock.xchng.

DR 31 HALO: experiment diagrams: SJI Associates/© Scholastic 2009.

DR 32 Mechanical Sense: illustration: Drew Morrison/© Scholastic 2009.

DR 33 Samuri Saladin: Tokyo subway: © Andrew Holt/Alamy, “William McIntyre”: JamesLevin/© Scholastic 2008, surveillance illustration: © Scholastic2009.

DR 34 Alistair Oh: breakfast table: ©Barbro Wickstrom/Shutterstock, drawings: © Scholastic 2009, paper:SJI Associates/© Scholastic 2009.

DR 35 Hope Diamond: paper: © Cris DeRaud/Stock.xchng, table: © KrissSzkurlatowski/Stock.xchng, seal: © Scholastic 2009, wax seal: SJIAssociates/© Scholastic 2009, crest: © Scholastic 2009, diamonddrawings: © Scholastic 2009.

DR 36 Grace's Passport: background of airport: © Roger Fischlin/Stock.xchng, brochure stand:SJI Associates/© Scholastic 2009, metal plate with screws: ©AlexMax/iStockphoto.

DR 37 Jean-BaptisteTavernier: placard: Douglas Smith/© Scholastic 2009, old book: ©DigitalBuild/iStockphoto, diamond drawings: Scott Sucher/©Scholastic 2009, paper texture: © Renato Guerra/Stockxchng, oldpaper: © alex dehnel/Stockxchng.

DR 39 Gordon Klose: world map: © Chen Ping Hung/Shutterstock.

DR 40 Alana Flores: “Alana Flores” (3 angles): © Tom LeGoff, the Louvre: © JozefSedmak/Shutterstock, Cathedral of Notre Dame: © ElenaElisseeva/Shutterstock, church: © Kokhanchikov/Shutterstock, RedSquare: © Maxim Urievich Lysenko/Shutterstock, Russian temple: ©Alexey Khromushin/Shutterstock, Hong Kong pavilion: © LiWa/Shutterstock, Hong Kong tram: © Christine Gonsalves/Shutterstock,eyeglasses: © Zaichenko Olga/Shutterstock.

DR 41 Ace of Spies: handbell: © Doug Nelson/iStockphoto, metal: © Cekuro/Shutterstock.

DR 43 Bletchley Park: Tommy Flowers: GNU Free Documentation License, Miriam Rothschild: © Carl Mydans/Getty Images, Alan Turing: © TimeLife Pictures/Getty Images, file folder (re-use): © FengYu/Shutterstock.

DR 44 Salem Witches: wax seals: © Matt Knannlein/iStockphoto, background: © Photodisc(RF/CD) via SJI associates, paper: © andreyutzu/Stock.xchng.

DR 45 Listening Device: metal texture (re-use): © Digital Textures (RF/CD) via SJIAssociates, background: © Photodisc (RF/CD) via SJI associates.

DR 46 Poison Ring: metal texture (re-use): © Digital Textures (RF/CD) via SJIAssociates, poison ring: SJI Associates/© Scholastic 2009.

DR 47 Snake Charmer: paper (re-use): © GregoryZamets/Stock.xchng, snake charmer: SJI Associates/© Scholastic 2009.

DR 48 Magic Box: Burial Place of Paul Revere: © John A. Rizzo (RF)/Getty Images.

DR 50 Heinrich Heinrichson: illustration: Cindy Salans Rosenheim/© Scholastic2009.

DR 51 Gertrude Ederle: Gertrude Ederle: © Ullstein Bild/The Granger Collection.

DR 52 Annie Oakley: Annie Oakley letter to William McKinley: U.S. National Archives andResearch Administration.

DR 53 Alcatraz: Alcatraz: © John Foxx (RF)/Getty Images.

DR 54 The NorthernRace: husky: © Sergey Skleznev/iStockphoto, Siberian husky: ©Sabrina Dei Nobili/iStockphoto, Alaskanmalamute dog: © Erik Lam/iStockphoto, Siberian husky in snow: ©Debra Feinman/iStockphoto, snow: © Sergey Chushkin/Shutterstock.

DR 55 The Golden Fleece: Philip the Good with necklace: © Society of Antiquariesof London/Bridgeman Art Library.

DR 56 Ghurka: illustration: Bill Sienkiewicz/© Scholastic 2009.

DR 57 Parkour: laptop: © Louis Hall/Stock.xchng, top-secret text: ©bsk/Stock.xchng, note, paper clips and tabletop: © PhotoObjects.net.

DR 58 Navigation Sense: illustration: Ron Carboni/© Scholastic 2009, leaves: © BeataBecla/Shutterstock, ropes: © Khafizov Ivan Harisovich/Shutterstock.

DR 59 Grace Cahill: illustration: Patty Harris/© Scholastic 2009.

DR 61 Carnival: William Clark's Elkskin bound journal: © Cary Horton/Clark FamilyCollection, William Clark Papers, Missouri Historical SocietyArchives, background: © javarman/Shutterstock.

DR 62 Klose's Notes: Flinders Street Station: © Lee Torrens/Shutterstock, Urquhartcastle: © Stephen Finn/Shutterstock, tourist tram: © OksanaPerkins/Shutterstock, pyramids and camel rider: © BrianLawrence/Getty Images.

DR 63 Ghost Ship: abstract of a stormy night sky: © Marilyn Barbone/Shutterstock, Yetifootprint: © Topical Press Agency/Getty Images, hand and dagger: ©Troy Newell/Stock.xchng, Brussels sprouts: © DebbieSchiel/Stock.xchng, ghost ship (re-use): © ElizabethPorter/Stock.xchng.

DR 64 Mt. Rushmore: illustration: Bruce Hutchinson/© Scholastic 2009.

DR 65 Brothers Grimm: illustration: Kent Barton/© Scholastic 2009.

DR 67 New York Subway: illustration: Kirk Caldwell/© Scholastic 2009.

DR 68 Grace's Hideaway: old wall: © Andrey Zyk/Shutterstock, burial plaque of Paul Revere: ©John A. Rizzo (RF)/Getty Images, wood texture: ©andreyutzu/Stock.xchng, blueprint: © Sanja Gjenero/Stock.xchng,tools, hammer, blueprints and wood shavings: © PhotoObjects.net.

DR 70 Money: golfhole: © sculpies/Shutterstock, businessman near Learjet: ©Felbert+Eickenberg/Getty Images, butler with tray of tea: © JuiceImages Limited (RF)/Alamy, hand and falling money: © TatianaPopova/Shutterstock.

DR 71 Money: HooverDam: © Celso Diniz/Shutterstock, man on moon: © NASA.


DR 74 Irina Spasky: spiral notebook: © Bomshtein/Shutterstock, background: ©Pomah/Shutterstock, camel: © Voyagerix/Shutterstock, “IrinaSpasky”: James Levin/© Scholastic 2008.


DR 75 Grace’s Guidebook: camelscenic: © Voyagerix/Shutterstock, digital camera and hand: ©IDAL/Shutterstock, “Grace” : JamesLevin/© Scholastic 2008.

DR 78 Sakhet: book: © Tischenko Irina/Shutterstock,burn holes : © Badami/Shutterstock.

DR 80 Jonah Wizard: volcanoerupting: © Julian Grondin/iStockphoto, “Jonah Wizard”: JamesLevin/© Scholastic 2008, paper withcurled edge: © Nesterov/Shutterstock, green paper: © sanjagjenero/stockxchng.

DR 82 Jane Cahill: web border:SJI Associates / © Scholastic 2009, book logo: © Art Explosion(RF/CD) via SJI Associates.

DR 85 Keats’Grave: wood table: © Salva Barbera/stockxchng, books: ©Karkas/Shutterstock, envelope and letters: © whitemay/iStockphoto,pushpins and letterhead: SJI Associates / © Scholastic 2009.

DR 86 The Book Code: bookcase: © Image Source (RF)/Getty Images, brass plate: © AlexMax/iStockphoto.

DR 96 Sombrero Alistair: chipswith salsa: © Danny Smythe/Shutterstock, plaid texture: © Bill Noll/iStockphoto, nacho chips: ©Floortje/iStockphoto, letterhead: SJI Associates/© Scholastic 2009.

DR 97 Yasmeen Badwani: diploma: © DNY59/iStockphoto, peg board: © R. MackayPhotography/Shutterstock, tools: © Andrjuss/Shutterstock, cord(re-use) and rector (re-use): © PhotoObjects/Jupiter via SJIAssociates, sticky note: © sanja gjenero/stockxchng.

DR 99 Katherine Cahill: Janusletterhead: SJI Associates/© Scholastic 2009, wood (re-use): ©Gordo25/iStockphoto, tree illustration: © Scholastic 2009.

DR 101 Cairo Hotel: hotel floorplan illustration: Ron Carboni/© Scholastic 2009.

DR 105 HAHO: metallicbackground: © Richard Dudley/Stock.xchng, folder: © FengYu/Shutterstock, PDA: SJI Associates/© Scholastic 2009.

DR 401: postmarks:© Valerie Loiseleux/iStockphoto,

DR 403: “DanCahill and Arnold”: James Levin/©Scholastic 2008, alley: ©kenny1/Shutterstock.

DR 404: paper: SJIAssociates/© Scholastic 2009 , metallicbackground: © Richard Dudley/Stock.xchng.

DR 405: paper: SJIAssociates/© Scholastic 2009 ,file folder: SJIAssociates/© Scholastic 2009 ,background files: ©Stephen Coburn/Shutterstock.

DR 406: paper: SJIAssociates/© Scholastic 2009.

DR 407: “Amyand Dan Cahill”: James Levin/ ©Scholastic 2008, Boston skyline: © Stephen Orsillo/Shutterstock,Notre Dame de Paris: © Elena Elisseeva/Shutterstock.

DR 408: “Irina Spasky”: © Michael Helms via Sandy Dell, printer paper: ©Ronald Bloom/iStockphoto.

DR 409: paper: SJIAssociates/© Scholastic 2009 , metallicbackground: © Richard Dudley/Stock.xchng.

DR 410: paper: SJIAssociates/© Scholastic 2009.

DR 411: paper: SJIAssociates/© Scholastic 2009 ,file folder: SJIAssociates/© Scholastic 2009 ,background files: ©Stephen Coburn/Shutterstock.

DR 412: “DanCahill and Arnold”: James Levin/ ©Scholastic 2008 ,alley: ©kenny1/Shutterstock.

DR 413: postmarks:© Valerie Loiseleux/iStockphoto.

DR 414: “DanCahill and Arnold”: James Levin/ ©Scholastic 2008 ,alley: ©kenny1/Shutterstock.

DR 417: “Amyand Dan Cahill”: James Levin / ©Scholastic 2008, world map: © Steve Hamblin (RF) /Alamy.

DR 418: “Dan Cahill and Arnold”: James Levin/ ©Scholastic 2008 ,alley: ©kenny1/Shutterstock.

DR 419: "AmyCahill": JamesLevin/© Scholastic 2008, maledressed as ninja: © CliffLloyd/Shutterstock, ninja mask: © DrazenVukelic/Shutterstock, treesand buildings: © Iain Masterson/Alamy.

DR 420: "DanCahill": JamesLevin/© Scholastic 2008, maledressed as ninja: © CliffLloyd/Shutterstock, ninja mask: © DrazenVukelic/Shutterstock, treesand buildings: © Iain Masterson/Alamy.

DR 421: "AlistairOh": JamesLevin/© Scholastic 2008, maledressed as ninja: © CliffLloyd/Shutterstock, ninja mask: © DrazenVukelic/Shutterstock, treesand buildings: © Iain Masterson/Alamy.

DR 424: postmarks:© Valerie Loiseleux/iStockphoto.

DR 426: computerscreen illustration: © LeonART/Shutterstock.

DR 427: computerscreen illustration: © LeonART/Shutterstock.

DR 428: computerscreen illustration: © LeonART/Shutterstock, “Amy and Dan Cahill”: James Levin/© Scholastic 2008, desert: ©ligio/Shutterstock

DR 429: computerscreen illustration: © LeonART/Shutterstock.

DR 430: computerscreen illustration: © LeonART/Shutterstock, “Amy and Dan Cahill”: James Levin/© Scholastic 2008, desertruin: © Event 5/Shutterstock.

DR 432: filefolder with clip-on pad: © Natalia Siverina/Shutterstock.

DR 434: leather:CGTextures, crumpled paper: CGTextures, paper clip: © Scholastic2009, paper: SJI Associates/ © Scholastic 2009.

DR 435: "Amyand Dan Cahill": James Levin/© Scholastic 2008, briefcase:Martine Oger/Shutterstock, paper: SJIAssociates/© Scholastic 2009.

DR 438: printerpaper: ©Ronald Bloom/iStockphoto.

Cahill Web

Webcast10/09/09: Venice: © AlionaBloshchynska/Shutterstock, Paris Catacombs: © StijntS/Shutterstock, Sir IsaacNewton : © The GrangerCollection, Taipansnake: © ANTPhoto Library/Photo Researchers.

I LikeUseless Facts: Ace of Spies: man: © PublicDomain.

LucianArchives: Alana Flores report: “Alana Flores”: © Tom LeGoff.

I Like Useless Facts: Alcatraz: Alcatraz Island (both): © Chee-Onn Leong/Shutterstock.

CliqueMe: Amy Cahill: “AmyCahill”: James Levin/© Scholastic 2008, Boston: © JorgeSalcedo/iStockphoto.

Know It All: Amy Cahill's BookReview: book: © Cherreshenka/Shutterstock, foot of statue:Adisa/Shutterstock, leather bound book: © Dorling Kindersley/GettyImages.

Adams Middle School Bulletin: DanCahill Ruins School Play: boy watching movie: © Jupiter Images(RF)/Alamy.

Mysterious Fire Kills MarriedCouple: house in flames: © Margit Notter/AP Photo.

I Like Useless Facts: AnnieOakley: Annie Oakley letterhead: © U.S. National Archives andResearch Administration, Annie Oakley: Library of Congress.

MIT Compass: Beloved ProfessorDies in Fire: blackboard: © Peter Fisher/Veer, funeral wreath: ©xyno6/iStockphoto.

Krafty Kitty Collector Profile:kittens with bows: © Douglas Sherman/Shutterstock, grey kittens: ©Heather Wenzel/Shutterstock, tall kittens: © KennethSponsler/Shutterstock.

Lucian Archives:BenjaminFranklin's letter to the Lucian leadership: Benjamin Franklin:Library of Congress.

The Truth Is Out There: BermudaTriangle: Masonic seal: © Private Collection/Ken Welsh/TheBridgeman Art Library, Bermuda Triangle: NASA, Battleship USSMissouri: © U.S. Navy/Getty Images.

I Like Useless Facts: BletchleyPark: Bletchley Park: © The Francis Frith Collection/SuperStock.

I Like Useless Facts: ParisCatacombs: skulls and bones: © GA Photography/Jupiter Images.

Large Hadron Collider May Destroythe Earth: CERN exterior: © Gemma Day/Alamy.

Thompson Falls Middle School AddsThree New PE Classes: © Scholastic 2009.

Crazee Collectors Online: SamuraiSwords: Japanese sword (katana): © Elena Zidkova/Shutterstock.

CliqueMe: Dan Cahill: “DanCahill”: James Levin/© Scholastic 2008, Public Garden, Boston: ©Chee-Onn Leong/Shutterstock.

Bunbury Bugle: Strongman Flop:weightlifter: © Matthias Tunger/Stone/Getty Images.

The Truth Is Out There: ­Ekaterina: UFO (re-use): © Mike Agliolo/Photo Researchers,hayfield: © George Olsson/Shutterstock.

Ekaterina Archives, Howard CarterReport: Hatshepsut: © Scala/Art Resource.

I Like Useless Facts: Eskrima: men fighting with bow staffs: © Jupiter Images/Brand X (RF)/Alamy.

Cahill Son MysteriouslyDisappears: teenage boy: © James Woodson/Getty Images.

I Like Useless Facts: GertrudeEderle: Gertrude Ederle: Library of Congress.

I Like Useless Facts: GervaisRaoul Lufbery: Lufbery with lion: © National Aviation Hall ofFame.

I Like Useless Facts: Ghurka: knife: © Henri Faure/iStockphoto.

Gordon Klose' Blog: “GordonKlose” (re-use): © Photodisc (RF)/ Getty Images

I Like Useless Facts: HALO: skydivers: © Darryl Leniuk/Getty Images.

Agra Times: Sky Diving Gone Wrong: panoramic view of Taj Mahal: © Luciano Mortula/Shutterstock.

CliqueMe: Hamilton Holt: “Hamilton Holt”: James Levin/© Scholastic 2008, football field:© Corbis/Superstock.

I Like Useless Facts: Harry Houdini: Harry Houdini: © The Granger Collection.

Janus Archives: Top Secret Memofrom Harry Houdini: Harry Houdini (re-use): © The GrangerCollection.

Tomas Archives: Heinrich Heinrichson report: Gare du Nord Station: © Keith Erskine/Alamy.

Prominent Archaeologist andHumanitarian Dies in Tragic Fire: Teddy bear: ©cen/Shutterstock,bouquet of flowers: ©Jonathan Heger/Shutterstock, cemeteryheadstone: ©iofoto/Shutterstock.

CliqueMe: Ian Kabra: “IanKabra”: James Levin/© Scholastic 2008, Oxfordshire Henley River: ©Alan Copson City Pictures/Alamy.

Polo Chaos: polo: © LynneSiler Photography/Alamy, two men running: © Peter Beavis/GettyImages.

I Like Useless Facts: Iditarod: dog team: © Pete Ryan/Getty Images.

Local Girl Steals Dogs for Fake Iditarod: running terrier, dog, and puppy running: © ImageSource (RF)/Getty Images.

Janus Archives: Surveillance photos of Irina Spasky: “Irina Spasky”: James Levin/©Scholastic 2008, President Bush: © Jonathan Ernst/Getty Images,entry gate: © John Stark/Alamy, Queen Elizabeth the II: © AngelTerry/Alamy.

Janus Archives: Surveillance photos of the Kabras: “Natalie Kabra”: James Levin/©Scholastic 2008,Trafalgar Square, England: © ShaneWilliams/iStockphoto, “Ian Kabra” ”: James Levin/© Scholastic 2008, Boston Charles River: © Stephen Orsillo/Shutterstock, “Ianand Natalie Kabra”: James Levin/© Scholastic 2008, Chuo-OhashiBridge in Tokyo: © Zaporozhchenko Yury/Shutterstock.

Jonah Wizard's Blog: “JonahWizard”: James Levin/© Scholastic 2008, necklace: ©stillfx/Shutterstock.

CliqueMe: Lilya Chernova: “Lilya Chernova” (re-use): © Purestock (RF) /Getty Images.

Fashion and Fractions: woman wearing hat (re-use): © Image Source (RF)/Veer.

I Like Useless Facts: Loch Ness: Urquhart castle: © Stephen Finn/Shutterstock (re-use).

The Truth Is Out There: Loch Ness Monster: Urquhart castle (re-use): © Stephen Finn/Shutterstock,Loch Ness Monster: © Hulton Archive/Getty Images.

The Truth Is Out There: The Lucians: UFO (re-use): © Mike Agliolo/Photo Researchers, shadowof men: © Julian Hibbard/Getty Images.

CliqueMe: Madison Holt: “Madison Holt”: James Levin/ © Scholastic 2008, Trees NonsuchPark: Bob Turner/Alamy.

Lucian Archives: Madrigal sightings: pedestrians: © Nordicphotos/Alamy, tank and troops: ©Three Lions/Getty Images.

Ekaterina Archives: Evidence of Madrigals: Angkor Wat, Cambodia: © Colman LernerGerardo/Shutterstock, Karnak, Egypt: © Adam Jones/Photo Researchers,Palmyra, Syria: © Georg Gerster/Photo Researchers.

I Like Useless Facts: Marie Curie: Marie Curie: © Ullstein Bild/The Granger Collection.

Mary-Todd Holt and Her Herculean Household: brownies: © Kathy Burns-Millyard/Shutterstock.

CliqueMe: Natalie Kabra: “Natalie Kabra”: James Levin/ ©Scholastic 2008, gardens: ©Terry Harris (RF)/Alamy.

Guest Paralysed at Kabra Ball: Poison Involved?: “Ian and Natalie Kabra”: James Levin/©Scholastic 2008,ballroom: © Image Source Black (RF)/Alamy.

Blog: Natalie Kabra's Guide to the Universe: “Natalie Kabra”: James Levin/© Scholastic 2008,entrance to home: © ImagesEurope (RF)/Alamy.

CliqueMe: Ned Starling: teen:© Image Source/Veer, beach: © Cheryl Casey/Shutterstock.

I Like Useless Facts: New YorkSubway: City Hall Subway station: © The New York PublicLibrary/Art Resource.

CliqueMe: Paul Addison: boy(re-use): © Stock4B (RF)/Getty Images.

I Like Useless Facts: Poison Ring: poison ring (re-use): © Malina/Stock.xchng.

CliqueMe: Reagan Holt: “ReaganHolt”: James Levin/© Scholastic 2008, Running track: © MichaelWells (RF)/Getty Images.

CliqueMe: Saladin: “Saladin”:James Levin/© Scholastic 2008, grass: © osvaldru/Shutterstock.

The Truth Is Out There: The Titanic: UFO (re-use): © Mike Agliolo/Photo Researchers.

Tomas Archives: Alistair Oh surveillance photos: “Alistair Oh”: James Levin/© Scholastic 2008, St. Sophia in Istanbul: © Kevin H. Knuth/Shutterstock, AnkaraTurkey: © Bikem Ekberzade/Alamy.

McIntyre, MacArthur, Muligan andSmood: business concept: © digitalife/Shutterstock.

I Like Useless Facts: Parkour: man doing backflip: © Ian Coble (RF)/Getty Images.

I Like Useless Facts: CERN: metal spheres: © Leo Blanchette/Shutterstock, supernova exploding: ©NASA Goddard Space Flight Center (NASA-GSFC).

I Like Useless Facts: Ching Shih: body: © Candela Foto Art/Kreuziger/Getty Images, face: © AlexMares-Manton/Getty Images, paper: © Effinity StockPhotography/iStockphoto, sword: © Candela Foto Art/Kreuziger/GettyImages.

I like Useless Facts: FamousDiamonds: Dresden Green Diamond: © ddp, Germany.

I like Useless Facts: Koh-l-noor: Koh-l-noor diamond replica: © Scott Sucher.

The Truth Is Out There: HopeDiamond: Hope Diamond: © Boltin Picture Library/Bridgeman ArtLibrary.

Grace Memo to Crew: cockpit: © Filip Fuxa/Shutterstock.

Alistair Surveillance: “Alistair Oh”: James Levin/© Scholastic 2008, island: © TylerOlson/Shutterstock, flower: EuToch/Shutterstock.

Natalie Kabra: diary in grass:© wakila/iStockphoto , gold corners: ©Dez Pain/Stock.xchng, pen: © Antonio Jimenez Alonso/Stock.xchng,diamonds on pen (re-use): © Kia Abell/Stock.xchng, ribbon: © MarcDietrich/Shutterstock , bookmark with heart: © JesusPerez/Shutterstock, key: © Regisser/Shutterstock.

Luke Cahill: blank page: ©FStephen Rees/Cutcaster, stack of files: © Feng Yu/Shutterstock,background files: © Lane V. Erickson/Shutterstock.

Reagan Holt: “Reagn Holt”:James Levin/© Scholastic 2008, airport interior: © ChristofferVika/Shutterstock.

Thomas Cahill: map: © TheGranger Collection, Thomas Cahill illustration: © Anna and ElenaBalbusso/© Scholastic 2009, paper (re-use): © Roger Kirby/Stock.xchng.

Mount Fuji: artificial turf: ©Thomas Fredriksen/Shutterstock, ball: © Kelpfish/Shutterstock, paper(re-use): SJI Associates/© Scholastic 2009.

Shuriken: silver door andhandle: © Deb Cohn-Orbach, tape: © Digital textures (RF/CD) via SJIAssociates.

Abigail Adams: Abigail Adams(re-use): © Stock Montage/Getty Images, flashlight (re-use): ©Andrzej Pobiedzinski/Stock.xchng, hand (re-use): ©PhotoObjects/Jupiter via SJI Associates, bronze plate: © DavidStern/Stock.xchng.

Criminal Grace: photocopypaper: © pdtnc/Shutterstock.

William's Heritage: “WilliamMcIntyre”: James Levin/ © Scholastic 2008, Budapest bridge: ©FAriy/Shutterstock.

The Polished Spy: chat window:SJI Associates/© Scholastic 2009, desktop folders: SJI Associates/©Scholastic 2009, money: © Scholastic 2009.

The Thumbprint: rocks: ©FColleen E. Scott / Scott Designs/Shutterstock, monitor: ©Fappler/Shutterstock, cave: © Falk Kienas/Shutterstock, lemur: ©Nrey/Shutterstock.

The Cat Burglar: “Saladin”:James Levin/ © Scholastic 2008, booties (re-use): ©PhotoObjects/Jupiter via SJI Associates, Kremlin tower: ©Vikol/Shutterstock.

Spy Pigeon (Useless facts):pigeon in flight: © G Tipene/Shutterstock.

George Monroe: old stagecoach:© Mjudy/iStockphoto.

Neuschwanstein Castle (uselessfacts): Neuschwanstein Castle (re-sue): © Robert Harding(RF)/Getty Images.

Eiffel Tower (Useless facts): Eiffel Tower (re-use): © AbleStock.com (RF)/Jupiter Images/GettyImages.

Petra (Useless facts): camelsoutside Petra (re-use): © Holger Mette/Shutterstock.

Statue of Libery (Useless facts): Statue of Liberty (re-use): © Tetra Images (RF)/Jupiter.

CliqueMe - Yasmeen Badwani:“Yasmeen Badwani” (re-use): © Grapheast (RF)/Alamy.

CliqueMe - Chrissy Collins:“Chrissy Collins”: © Photodisc Photography (RF)/Veer.

Branch Home Pages

Ekaterina Branch: King Tutfuneral mask: © Egyptian National Museum/the Bridgeman Art Library,liquid in beaker: © Photos.com (RF)/Jupiter Images.

Janus Branch: Leonardo daVinci's Vitruvian Man: © Galleria dell' Accademia/The Bridgeman ArtLibrary, ship: © The Granger Collection.

Lucian Branch: blackbirdaircraft: © Purestock (RF)/Getty Images, painting of Napoleon: ©The Granger Collection.

Tomas Branch: astronaut andspace shuttle: © Pam Francis (RF)/Getty Images, motorbike andsidecar: © Olivier Renck/Getty Images.

Cahill Branch: Leonardo daVinci's Vitruvian Man (re-use): © Galleria dell' Accademia/TheBridgeman Art Library, painting of Napoleon Bonaparte on horse(re-use): © The Granger Collection, New York, astronaut in front ofspace shuttle (re-use): © Pam Francis/Getty Images, motorbike andsidecar: © Olivier Renck/Getty Images.

Family Letterheads

Cahill 1600s: leatherbackground: © Digital Textures (RF/CD) via SJI Associates, leatherbackground 2: © Photodisc (RF/CD) via SJI Associates, paper: © JanFlaska/Stock.xchng.

Cahill 1800s: fabricbackground: © Pedro IgnÃcio Loyola Frota/Stock.xchng, paper: ©Gopakumar Ravindran/Stock.xchng.

Cahill Contemporary: metalbackground: © Photodisc (RF/CD) via SJI Associates.

Lucian 1600s: wax seal: ©Matthew Knannlein/iStockphoto, inked backgrounds: © Photodisc(RF/CD) via SJI Associates, paper: © andreyutzu/Stock.xchng.

Lucian 1800s: leatherbackground: © Digital Textures (RF/CD) via SJI Associates, paper: ©Julian Leandro Irusta/Stock.xchng.

Lucian Contemporary: pillowbackground: © Photodisc (RF/CD) via SJI Associates, paper: ©ams9w3/Stock.xchng.

Ekaterina 1600s: marblebackgrounds: © Photodisc (RF/CD) via SJI Associates, paper: ©Davide Guglielmo/Stock.xchng.

Ekaterina 1800s: woodbackground: © Salva Barbera/Stock.xchng, wood background 2: ©Photodisc (RF/CD) via SJI Associates, paper: © RobertAichinger/Stock.xchng, letter graphic: "Machinery and MechanicalDevices", by William Rowe, Dover Books, page 45.

Ekaterina Contemporary: metalbackgrounds: © Photodisc (RF/CD) via SJI Associates, paper: ©Digital Textures (RF/CD) via SJI Associates.

Tomas 1600s: stone background:© Photodisc (RF/CD) via SJI Associates, paper: ©andreyutzu/Stock.xchng.

Tomas 1800s: stone background:© Photodisc (RF/CD) via SJI Associates, paper: ©andreyutzu/Stock.xchng.

Tomas Contemporary: metalbackground and paper: © Digital Textures (RF/CD) via SJI Associates.

Janus 1600s: marblebackground: © Photodisc (RF/CD) via SJI Associates, marblebackground 2: © Ali Farid/Stock.xchng, paper: © Sophie/Stock.xchng.

Janus 1800s: canvasbackgrounds: © Photodisc (RF/CD) via SJI Associates, paper: ©Robert Aichinger/Stock.xchng.

Janus Contemporary: paintedbackground and paper: © Photodisc (RF/CD) via SJI Associates.

The 39 Clues web book pages

Book 1:Agents: “AmyCahill,” “Dan Cahill,” “Alistair Oh,” “Jonah Wizard,”“Natalie Kabra,” and “Irina Spasky”: James Levin/©Scholastic 2008, man in black: © Scholastic 2009; Locations:Paris: © Lucarelli Temistocle/Shutterstock, Independence Hall,Philadelphia: © scoutingstock/Shutterstock.

Book 2: Agents: “AmyCahill,” “Dan Cahill,” “Jonah Wizard,” “Ian Kabra,”“Natalie Kabra,” “Alistair Oh,” and “Irina Spasky”: JamesLevin/© Scholastic 2008, “Broderick Wizard”: ©Dynamic Graphics (RF)/Jupiter Images, Marie Antoinette: © French School/Bridgeman/Getty,Wolfgang Amadeus Mozart: © wynnter/iStockphoto, Anna Mozart: ©akg-images/The Image Works; Locations: Natural History MuseumVienna, Austria: © Juriah Mosin/Shutterstock, Grand Canal in Venice,Italy: © Sailorr/Shutterstock, Salzburg, Austria: © JuliusKielaitis/Shutterstock.

Book 3: Agents: “AmyCahill”, “Dan Cahill”, “Alistair Oh”, “Ian Kabra”, and“Natalie Kabra”: James Levin/ © Scholastic 2008, “Nellie”: ©Vstock (RF)/Alamy, Toyotomi Hideyoshi: Library of Congress;Locations: Evening view of Tokyo: © gnohz/Shutterstock,Emperor palace at Seoul. South Korea: © AndreyShchekalev/Shutterstock.

Book 4: Agents: “AmyCahill,” “Dan Cahill,” “Alistair Oh,” “Irina Spasky,”and “Jonah Wizard”: James Levin/© Scholastic 2008, “Bae Oh”:Owen Brozman/© Scholastic 2009 , Statueof Queen Hatshepsut: © Bill McKelvie/Shutterstock, painting ofNapoleon: World History Archive, “Nellie”: © Vstock (RF)/Alamy;Locations: Hatshepsut Temple: ©Anthon Jackson /Shutterstock,Temple of Philae at Aswan, Egypt: © WH Chow/Shutterstock, Citadel ofSaladin in Cairo, Egypt: © Donald R. Swartz/Shutterstock.

Book 5: Agents: “AmyCahill,” “Dan Cahill,” “Irina Spasky,” and “HamiltonHolt”: James Levin/© Scholastic 2008, man in black: © Scholastic2009, “Nellie”: © Vstock (RF)/Alamy, Rasputin: AP Photo, Romanovfamily: The Granger Collection; Locations: Red Square atnight, Moscow, Russia: © karnizz/Shutterstock, The Church of OurSavior on Spilled Blood, St Petersburg, Russia: ©posztos/Shutterstock, World War II Memorial in Volgograd Russia: ©Denis Dryashkin/Shutterstock, Temple of blood, Yekaterinburg, Russia:© Konstantin Mironov /Shutterstock.

Book 6: Agents: “AmyCahill,” “Dan Cahill,” and “Irina Spasky”: James Levin/ ©Scholastic 2008, “Nellie”: © Vstock (RF)/Alamy, “Isabel Kabra”and paparazzi: © Blend Images/Getty Images; Locations: Sydney,Australia: © G Tipene/Shutterstock, Coober Pedy, South Australia: ©Harris Shiffman/Shutterstock, Sunrise near Darwin, Australia: ©Peter Ingvorsen/Shutterstock, Anak Krakatau at sunset: © WarrenGoldswain/Shutterstock.

Book 7: Agents: “AmyCahill,” “Dan Cahill,” “Alistair Oh,” and “The Holts”:James Levin/ © Scholastic 2008, “Nellie”: © Vstock (RF)/Alamy,“Isabel Kabra” and paparazzi: © Blend Images/Getty Images, ShakaZulu portrait: Private Collection/© Look and Learn/Bridgeman,Winston Churchill: Library of Congress; Locations: Durban,South Africa: © Francesco Dazzi/Shutterstock, Johannesburg, SouthAfrica: © Luian Coman/Shutterstock, Southern Mozambique: © PhotoSky4t.com/Shutterstock, fisherman village, Madagascar: © Pozzo DiBorgoThomas/Shutterstock.

Book 8: Agents: “AmyCahill,” “Dan Cahill,” and “Jonah Wizard”: James Levin/ ©Scholastic 2008, “Cora Wizard”: © FancyPhotography (RF)/Veer , “Broderick Wizard”: ©Dynamic Graphics (RF)/Jupiter Images “Nellie”: © Vstock(RF)/Alamy, George Mallory: © Mary Evans Picture Library/The ImageWorks, Emperor Puyi: The Granger Collection; Locations: TheForbidden City, Beijing, China: © Ian D Walker/Shutterstock, Army ofthe Terracotta Warriors, Xian, China: © Holger Mette/Shutterstock,Monestery Dengfeng, China: © hjschneider/Shutterstock, Himalayanvillage, Nepal: © Pichugin Dmitry/Shutterstock.

Book 9: Agents: “AmyCahill,” “Dan Cahill,” “Ian Kabra,” and “Natalie Kabra”:James Levin/ © Scholastic 2008, man in black: © Scholastic 2009,“Nellie”: © Vstock (RF)/Alamy, “Isabel Kabra” and paparazzi:© Blend Images/Getty Images, Pirate Anne Bonny: © The BritishLibrary/HIP/The Image Works; Locations: lighthouse in Nassau,Bahamas: © Daniel Korzeniewski/Shutterstock, Tropical Bay inJamaica: © Carlos Gauna/Shutterstock.

Book 10: Agents: “Jonah Wizard,”“Natalie Kabra,” “Ian Kabra,” “Alistair Oh,” “DanCahill,” “Amy Cahill,” and “Hamilton Holt”: James Levin/ ©Scholastic 2008, Shakespeare: © SuperStock/Getty Images, Isabel Kabra with paparazzi: © Blend Images/GettyImages; Locations: Big Ben, London, England: ©S. Borisov/Shutterstock, Stratford-Upon-Avon, England: ©gary718/Shuttesrtock, Cahill Island: © Richard Cooke/Alamy.

Book 11: Agents: “Dan Cahill” and “Amy Cahill”: James Levin/ ©Scholastic 2008,“Fiske Cahill”: Ken Karp/ ©Scholastic 2011; Locations: Matterhorn, Switzerland (re-use): ©Strider/Shutterstock, Boston(re-use): ©Jorge Salcedo/iStockphoto.

Arena 39: Snake Charmer: © Electric Funstuff, Safe Cracker: © Union Square Interactive, Dogfight,Stunt Pilot: © Rock SolidArcade, all other Arena39 Games: © Arkadium.