It begins like a campfire story: Five boys and a grownup went into the woods...It ends in madness and murder. And worse...Once a year, scoutmaster Tim Riggs leads a troop of boys into the Canadian wilderness for a three-day camping trip—a tradition as comforting and reliable as a good ghost story and a roaring bonfire. But when an unexpected intruder stumbles upon their campsite—shockingly thin, disturbingly pale, and voraciously hungry—Tim and the boys are exposed to something far more frightening than any tale of terror. The human carrier of a bioengineered nightmare. An inexplicable horror that spreads faster than fear. A harrowing struggle for survival that will pit the troop against the elements, the infected…and one another. Part Lord of the Flies, part 28 Days Later—and all-consuming—this tightly written, edge-of-your-seat thriller will take readers deep into the heart of darkness and close to the edge of sanity.