First published 2010
Amy Cahill stares at the final pieces of the centuries-old puzzle that has consumed her life. She and her fourteen-year-old brother Dan have survived bombs, betrayals, and murder attempts to collect the 39 Clues before their ruthless relatives. Now they face an impossible choice. The adults expect them to reunite the same Cahill family branches that killed their parents. Amy and Dan refuse to play by those rules anymore. They devise their own plan to end the hunt without rewarding the backstabbers who have tormented them across continents. But the Madrigal branch has hidden one last secret from the siblings. This final revelation threatens not just Amy and Dan's lives, but the fate of everyone they care about. The explosive conclusion forces them to risk everything they have fought to protect.
Genres: adventure, mystery, contemporary, young-adult
Vibes: fast-paced, suspenseful, thought-provoking
Tropes: chosen-one, found-family
Setting: Cahill Family
Period: Contemporary
327 pages · Hardcover · Scholastic Inc.
Content warnings: violence