Eight students and two instructors set out on a six-week-long wilderness expedition into the Wind River Range of the Rocky Mountains. Only one returned alive. In May 1996, a group of students arrived at the Wilderness Intensive Learning and Development (WILD) outpost in Ames River, Wyoming. When the van arrived at the trailhead to pick them up a month and a half later, the team, known as WILD-596, was nowhere to be found. In the end, only one of the missing hikers was found alive - Josh Otero. The remaining seven souls of WILD-596 died in the Wyoming wilderness. Through extensive research using journals, documents, and interviews, Carrie Ryan has crafted a riveting page-turner, bringing a fiction writer's touch to tell the little-known story of the tragic events of those six weeks and the courageous will to survive exhibited by the team members of WILD-596.