It is time you know the truth. You are a member of the Cahill family, the most powerful family the world has ever known.
39 Clues hidden across the globe guard the source of the Cahill family's secret power, and it's up to you to find them. The hunt is on.
Are you ready for the challenge?
Confirmed! You are a member of the Cahills, the world's most powerful - and most secretive - family. You're one step closer to starting your hunt for the 39 Clues.
Every Cahill belongs to one of four family branches.
Discover your branch by taking the following quiz.
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Click here to read an excerpt from The Maze of Bones , Book 1 of the First Series!
Click here to read an excerpt from The Medusa Plot , Book 1 of the Second Series!