A criminal profiler races to catch a serial killer preying upon teenagers in this shocking crime thriller by the author of The Wire in the Blood. He is psychologist and criminal profiler Dr. Tony Hill's worst nightmare—a killer driven by the most perverted hungers and unmoved by youth and innocence, a killer with a long shopping list of victims who leaves no trail. The murder-mutilation of teenager Jennifer Maidment is horrific enough on its own, but Hill quickly realizes that it's just the beginning of a chilling campaign targeting an apparently unconnected group of young people—victims that the monster has been grooming through a social networking site. It is a case that is reawakening ghosts of Tony Hill's past. And the longer it takes to uncover a motive and a maniac, the more innocent youth will die.