The thrilling conclusion to 39 Clues Part VI: Doublecross. A Cahill family member from the past is bent on revenge! CHECKMATEThirteen-year-old Dan Cahill and hi

A brand new adventure from the world of The 39 Clues!For 500 years, the Cahills have been the most powerful family in the world. For 500 years, they've protecte

Follow the Leader 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, general

Never turn your back on the Cahills . . . The most powerful family history has ever known returns with a vengeance in The 39 Clues: Doublecross! The Cahills are

International bestseller David Baldacci pens the stunning conclusion to Cahills vs. Vespers! It started with a kidnapping. A shadowy organization known only as