Now in paperback, a thrilling mystery from internationally bestselling author Louis Sachar. Fifth grader Tamaya Dhilwaddi and seventh grader Marshall Walsh have been walking to and from Woodbridge Academy together since elementary school. But their routine is disrupted when bully Chad Wilson challenges Marshall to a fight. To avoid the conflict, Marshall takes a shortcut home through the off-limits woods. Tamaya reluctantly follows. They soon get lost, and they find trouble. Bigger trouble than anyone could ever have imagined. In the days and weeks that follow, the authorities and the government become involved, and what they uncover might affect the future of the world.