Day of Doom

The Ultimate SacrificeIt 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...

Mission Titanic

At only seventeen years old, Ian Kabra is head of the Cahills, the most powerful family in the world. He has presidents on speed dial, and generals at his beck and call. Ian knows...

Breakaway

The 39 Clues is unstoppable! The bestselling series returns with an adventure spanning four explosive books and a website that places readers right in the action.

Operation Trinity

For 500 years, the Cahills have been the most powerful family in the world. For 500 years, they've protected the source of their power - the 39 Clues. And for 500 years, they've...

The Black Circle

Governments were toppled and rulers were killed during the last attempt to find the lost treasure Amy and Dan Cahill are searching for—do they even stand a chance?

The Maze of Bones

What would happen if you discovered that your family was one of the most powerful in human history? What if you were told that the source of the family’s power was hidden...

Nowhere to Run

The Cahill family has a secret. For five hundred years, they have guarded the 39 Clues – thirty-nine ingredients in a serum that transforms whomever takes it into the most...

The Marriage Plot

There is no happiness in love, except at the end of an English novel. Anthony TrollopeIt’s the early 1980s. In American colleges, the wised-up kids are inhaling Derrida and...

Vespers Rising

Defend the CluesFourteen-year-old Amy Cahill and her younger brother, Dan, thought they could return to theirregular lives when they found the 39 Clues that safeguard their...

Zen Shorts

"Michael," said Karl. "There's a really big bear in the backyard." This is how three children meet Stillwater, a giant panda who moves into the neighborhood and tells amazing...

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