Sophomore Hallie Calhoun, her former friend Jonah, and new friend Rachel leave a church youth group hike in the Great Smoky Mountains and become lost for five days, struggling to survive as Hallie finally speaks about the incident that made her a social pariah and Jonah admits why it hurt him so much. Interest Level: YA ATOS Book Level: 3.8 AR Interest Level: MG+ AR Points: 9 AR Quiz: 174482EN Reading Counts Level: 4.2 Reading Counts Points: 17 Lexile: HL540L.