Chapter 1: Man on the Run
* Marion Crane, a real estate clerk, steals $40,000 from her employer and flees Phoenix, Arizona.
* As she drives through the desert, she feels guilty and anxiety-ridden.
Chapter 2: Motel
* Marion checks into the Bates Motel, run by Norman Bates, a shy and awkward young man.
* She finds Norman likable but also slightly strange.
* She decides to spend the night at the motel.
Chapter 3: The Shower Scene
* Marion takes a shower in her motel room.
* As she stands under the water, the shower curtain is pulled back and a figure with a butcher knife appears.
* The figure stabs Marion multiple times, killing her.
Chapter 4: Arbogast
* Detective Milton Arbogast arrives at the Bates Motel to investigate Marion's disappearance.
* Norman acts nervous and cooperative but avoids giving any information about Marion.
* Arbogast suspects that Norman is hiding something.
Chapter 5: Lila
* Marion's sister, Lila, and her boyfriend, Sam Loomis, arrive at the motel to search for Marion.
* They find Norman's behavior suspicious and believe he has harmed Marion.
Chapter 6: Mother
* Arbogast, Lila, and Sam discover a hidden basement room at the motel.
* Inside, they find a mummified corpse that resembles Norman's mother, who had died years earlier.
* Norman reveals that he has been dressing in his mother's clothes and impersonating her since her death.
Chapter 7: Flashback
* Norman explains that his mother was a dominating and controlling woman who made him believe he was insane.
* He killed her and buried her body in the basement, but her personality remained with him and took over his life.
Chapter 8: Resolution
* Arbogast arrests Norman for Marion's murder and his other crimes.
* Norman is taken to a mental hospital, where he will spend the rest of his life.
* Lila and Sam are relieved that Marion's death has been solved, but they are also haunted by the horror they have witnessed.