After the death of Norman's father, his mother found a lover. Norman went over the edge with jealousy and murdered both of them. 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 for whom Norman has feelings. When Norman regains consciousness, he believes that his mother has committed the crime and covers up for her. Richmond concludes that the Mother personality has now taken complete control of Norman's mind, erasing his existence. In the final scene, Norman sits in a cell, thinking in Mother's voice. In a voice-over, Mother explains that she plans to prove to the authorities she is incapable of violence by refusing to swat a fly that has landed on her hand. Marion's car is shown being recovered from the swamp and is followed by the ending credits. The first name of Dr. Richmond was changed from "Fred" to "Simon" while the wife of Al Chambers was given the first name "Eliza". Director Gus Van Sant, emulating Hitchcock's practice of making cameo appearances in his films, appears as "Man talking to man in cowboy hat" at the same point in his film when Hitchcock made his appearance in the original. According to the DVD commentary track that featured Van Sant, Vaughn, and Heche, Van Sant's character is being scolded by Hitchcock in the scene. The audio commentary track that accompanies the DVD release of the film, and the making-of documentary ("Psycho Path") that the DVD includes, provide numerous details about where the film strove to remain faithful to the original, and where it diverged. Some changes are pervasive: as the film opens, it is made clear that it is set in the late 1990s, so minor changes are made throughout the dialogue to reflect the new timeframe. For example, all the references to money are updated (how much Marion Crane steals, how much a car costs, how much a hotel room costs), as are references to terms from the original script that would seem anachronistic in the new setting. According to Van Sant, in the original the only fully fleshed out character was Norman Bates; the other major characters were more iconic, purposely written and portrayed to advance the plot. Van Sant relied upon his main cast members more to flesh out and make consistent their characters' motivations, and worked with them to determine to what degree their characters were similar to the originals.