Mystery! Episodes on PBS

“Touching Evil 2”: A ritual killer (Philip Jackson) who targets fellow Bosnian-relief workers stabs his victims neatly in the head, then washes the bodies and wraps them in sheets. It seems that the murders are the killer's way of exorcising demons---his and his victims'---from the war. “Nobody should have to see what we did,” he tells his OSC interrogators. DC Rivers (Shaun Dingwall) has some demons of his own to exorcize---from the Emerson-Laney case---and he charges headlong into this one. Creegan: Robson Green. Taylor: Nicola Walker.