Nowhere to Run (The 39 Clues: Unstoppable, Book 1)

The 39 Clues series returns with an exciting multi-book adventure that follows thirteen-year-olds Dan and Amy Cahill as they uncover a family secret and race against time to recover a powerful serum. Guarded for centuries to prevent catastrophe, the serum goes missing, prompting a dangerous quest to prevent it from falling into the wrong hands. An engaging blend of mystery and action awaits readers as they join the Cahills in their life-and-death mission.