Unable to return to their normal lives despite the end of the Clue hunt, new Madrigal leaders Amy and Dan anxiously prepare for a retaliatory strike by the Vespers, who kidnap a number of Cahill family members and demand that Amy and Dan steal a famous painting.

An escalating race to find the 39 Clues finds Amy and Dan pursuing a Clue guarded by thousands of the world's best-trained soldiers, an effort that separates them in explosively dangerous ways.

As Aiden Falconer and FBI Agent Harris are closing in on the people who kidnapped Meg, Meg, unaware of the efforts to rescue her, tries to escape on her own and is never where she is suppose to be.

FINAL HOURS

Tick tock. Fifteen-year-old Amy Cahill has only a 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's ingredients are scattered around the world. And too bad that survival is by far Amy's smallest problem.The antidote she needs is also the only thing capable of stopping a deadly enemy. J. Rutherford Pierce is on the brink of becoming the most...

Aidan and Meg Falconers' parents are facing life in prison unless Aidan and Meg can prove their innocence, but first they must escape from a juvenile detention center and elude both the authorities and a sinister attacker who has his own reason to stop them.