Book 6: Day Of Doom
It started with a kidnapping. A shadowy organization known only as the Vespers snatched seven members of the Cahill family and demanded a series of bizarre ransoms from around the world. With no choice but to play their enemy's deadly game, Amy, Dan, and their Madrigal allies risked everything to give Vesper One what he wanted . . . and some of their dearest friends paid the ultimate price.
But when they deliver the last ransom, Amy and Dan discover the Vespers' terrifying endgame. The objects he demanded are vital pieces in a plot that will harm millions of innocent people. Now the two siblings and their friends are in an all-out sprint to stop Vesper One . . . before the whole world goes BOOM.
To unlock the puzzles, Add the Book 6 cards to your online gallery now.
Add book cards to view
The 39 Clues is a storytelling adventure that leaps across books, cards and this website to put YOU at the center of the action. You are a member of the Cahills, the world’s most powerful family. The source of the power has been hidden across the globe in the form of 39 Clues. In the first series, The Clue Hunt, your mission is to find the 39 Clues – at any cost. The series kicks off with Book 1: The Maze of Bones by Rick Riordan. The second series is Cahills vs. Vespers, which introduces you to a deadly enemy hiding in the shadows. Your mission is to stop the Vespers – before the world pays the price. Cahills vs. Vespers launches with Book 1: The Medusa Plot by Gordon Korman. Do you have what it takes?