Two brothers try to lead lost campers to safety in the fourth adventure of the Wilder Boys series. The boys help out at a wilderness camp near Sequoia National Park, a day's drive south of the Sierras. The camp's main draw is a multi-day trek traversing woodlands, mountains, and desert during a team-based orientation competition that will take them to the edge of Death Valley. When Jake and Taylor's team counselor is badly hurt in a flash flood,...