Aiden Falconer and FBI Agent Harris are closing in on the people who kidnapped Aiden's sister, Meg. There's just one hitch: Meg is trying to escape from them on her own, and is never where she's supposed to be — twelve-year-old Meg has escaped from the kidnappers and must now find safety during a terrible blizzard. As tension mounts and the net tightens, only one thing is clear: The kidnappers aren't going down without a fight. Before, it was Meg who was in trouble. Now both Meg and Aiden are in grave danger. The startling conclusion to Gordon Korman's adventure trilogy.