Tick Tock. Sixteen-year-old Amy Cahill only has few days to live. There’s a poison coursing through her, and her only chance is to collect ingredients for an antidote. Too bad the antidote ingredients…
The clock has finally run out for the Cahills. As the leaders of the world’s most powerful family, Dan and Amy have been in the crosshairs for too long. It was only a matter of time until luck failed …
As a member of the most powerful family history has ever known, thirteen-year-old Dan Cahill has been shot at, kidnapped, and even thrown into a pit with a deadly snake. He's survived it all due to lu…
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 th…
When seven members of their family were kidnapped, thirteen-year-old Dan Cahill and his older sister, Amy, got ready for the fight of their lives. But their enemy, a terrifying group known as the Vesp…
After pulling some spectacular heists, Amy and Dan have become two of Interpol's most wanted criminals. So when Vesper One orders them to steal the world's largest diamond, they know they're facing li…
A LIFE ON THE LINE When seven members of his family were kidnapped by the Vespers, thirteen-year-old Dan Cahill knew he was in for the fight of his life. He knew he was up against an impossibly powerfu…
Are you ready to save the world? The bestselling series returns with an adventure spanning 6 explosive books, 2 secret-filled card packs, and a website that places readers right in the action. Thirtee…
The explosive finale to the #1 bestselling series! Fourteen-year-old Amy Cahill and her younger brother, Dan, have had enough. Not only do they have to find the 39 Clues first, they're expected to reu…
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 protected the source of their power - the 39 Cl…
A game of cat and mouse... A strange telegram lures fourteen-year-old Amy Cahill and her younger brother, Dan, deep into Russia and away from the only trustworthy adult they know. Signed with the initi…
Amy and Dan Cahill have been located once again, this time in the company of the notoriously unreliable Alistair Oh. Could they have been foolish enough to make an alliance?
The race is on to find 39 Clues that safeguard a great power, and fourteen-year-old Amy Cahill and her younger brother, Dan, are shocked to find themselves in the lead. The search …
When their beloved aunt--matriarch of the world's most powerful family--dies, orphaned siblings Amy and Dan Cahill compete with less honorable Cahill descendants in a race around the world to find cry…
Time is running out for Grace Cahill as she struggles to make the most important choice of her a decision that will shape the future of the Cahill family . . . and the world at large. After spending c…
