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.

"Senior year at Ellingham Academy for Stevie Bell isn't going well. With the cold case of the century solved, Stevie is adrift. There is nothing to distract her from the questions pinging around her brain--questions about college, love, and life in general. Relief comes when David invites Stevie and her friends to join him for study abroad, and his new friend Izzy introduces her to a double-murder cold case. In 1995, nine friends from Cambridge University...

"Quinn Maybrook and her father have moved to tiny, boring Kettle Springs, to find a fresh start. But what they don't know is that ever since the Baypen Corn Syrup Factory shut down, Kettle Springs has cracked in half. On one side are the adults, who are desperate to make Kettle Springs great again, and on the other are the kids, who want to have fun, make prank videos, and get out of Kettle Springs as quick as they can. Kettle Springs is caught...