After Norman's arrest, forensic psychiatrist Dr. Fred Richmond (Robert Forster) tells Sam and Lila that Norman's dead mother is living in Norman's psyche as an alternate personality. After the death of Norman's father, the pair lived as if they were the only people in the world. When his mother found a lover, Norman went over the edge with jealousy and murdered both of them. Consumed with guilt, he tried to "erase the crime" by bringing his mother back to life in his mind. He stole her corpse and preserved the body. When he is "Mother", he acts, talks, and dresses as she would. Norman imagined his mother would be as jealous of a woman to whom he might be attracted just as he was of his mother's lover, and so "Mother" kills any woman he has feelings for; when Norman regains consciousness, he believes that his mother has committed the crime, and covers up for her. It is implied that Norman is responsible for the unsolved disappearances of two young girls. Richmond concludes that the "Mother" personality has now taken complete control of Norman's mind.