On a snowy Pittsburgh night a young doctor is found beaten, slashed and slain in his bathtub. While everyone struggles with the shocking loss, detectives develop a psychological profile of a killer who will likely strike again unless they find him.

During chilling winter nights in Idaho, a madman is on the prowl... attacking citizens in a crime spree that stuns families and terrifies whole communities. Investigators must race against time to catch a killer... who kills for the thrill of it.