The 39 Clues

The 39 Clues Superspecial Outbreak

The Cahills are the most powerful family history has ever known. For the past five centuries, they have secretly served as guardians of the world. The Cahills command presidents, take down corrupt governments . . . and are currently led by a fourteen-year-old boy with a superhero complex.

Dan Cahill may be young, but he's nobody's fool. So he knows he must act fast when he learns that Sinead Starling, a former friend who betrayed the family, is up to her eyeballs in a plot to control a deadly virus. But is Sinead behind the plot, or is she a hero trying to stop the virus from getting out? The search for Sinead will take Dan and his friends from Cuba to the Bermuda Triangle, where the fate of the world may just depend on whether the Cahills can trust a traitor . . . .

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C. Alexander London

C. Alexander London

C. Alexander London is a top Ekat agent and the author of many books including the Dog Tags series. When he’s not writing, he can usually be found walking around New York City talking to his dog . . . who may or may not also be a secret agent.

C. Alexander London

Other Books By C. Alexander:

  • Tides of War
  • The Wild Ones
C. Alexander London - Front C. Alexander London - Back

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?