Touching Evil follows the exploits of the Organized and Serial Crime Unit (OSC). Maverick Detective Inspector Dave Creegan is the newest member of the unit, an elite, rapid-response crime squad. The OSC uses their diverse crime-fighting skills to bring justice to society.
The series is based on characters created by Val McDermid, including a university clinical psychologist, Dr. Anthony "Tony" Valentine Hill (Robson Green), who is able to tap into his own dark side to get inside the heads of serial killers. Working with detectives, Hill takes on tough and seemingly impenetrable cases in an attempt to track down the killers before they strike again.
A sharp detective with a messy life, DCI Vera Stanhope patrols her “patch” of northeast England, pursuing the truth in cases of murder, kidnapping, and blackmail. Vera is obsessive about her work and faces the world with caustic wit, guile and courage.
A detective recovering from amnesia caused by a shocking car accident begins to suspect not everything is as it seems, following the reappearance of a young boy.