At the police station, a psychiatrist explains that Norman murdered Mrs. Bates and her lover ten years ago out of jealousy. Unable to bear the guilt, he stole her corpse and began to treat it as if she were still alive. He recreated his mother in his own mind as an alternate personality. This "Mother" personality is as jealous and possessive as when Mrs. Bates was still alive: whenever Norman feels attracted to a woman, "Mother" kills her. As "Mother," Norman killed two young women prior to killing Marion and Arbogast. While Norman sits in a jail cell, "Mother's" voice-over protests that the murders were Norman's doing. Marion's car is towed from the swamp.