Playback is a 2-hour Columbo episode, guest-starring Oskar Werner in his American TV series debut. Werner plays an electronics expert who installs TV cameras in every room of his mansion. Even so, he manages to bump off his mother-in-law without leaving a clue. That's the cue for Lt. Columbo (Peter Falk) to lurch into the scene. Playback was first broadcast on March 2, 1975. ~ Hal Erickson, Rovi