Strangers On A Train 1951

Strangers on a Train is a 1951 American psychological thriller film noir produced and directed by Alfred Hitchcock, and based on the 1950 novel Strangers on a Train by Patricia Highsmith. It was shot in late 1950, and released by Warner Bros. on June 30, 1951, starring Farley Granger, Ruth Roman, and Robert Walker.
The story concerns two strangers who meet on a train, one of whom is a psychopath who suggests that they "exchange" murders so that neither will be caught. The film initially received mixed reviews, but has since been regarded much more favorably. In 2021, the film was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".
Amateur tennis star Guy Haines wants to divorce his promiscuous wife Miriam so he can marry Anne Morton, the daughter of a US Senator. On a train, wealthy smooth-talking psychopath Bruno Antony recognizes Haines and reveals his idea for a murder scheme: two strangers meet and "swap murders"—Bruno suggests he kill Miriam and Guy kill Bruno's hated father. Each will murder a stranger, with no apparent motive, so neither will be suspected. Guy humors Bruno by pretending to find his idea amusing, but is so eager to get away from Bruno that he leaves behind his engraved cigarette lighter.
Guy meets with Miriam, who is pregnant by someone else, at her workplace in Metcalf, their hometown. Miriam informs Guy that she no longer wants to end their marriage. She threatens to claim that he is the father, in order to thwart any divorce attempt. That evening, Bruno follows Miriam to an amusement park and strangles her while Guy is on the train to Washington. When Guy arrives home, Bruno informs him Miriam is dead and insists that he must now honor their deal.
Guy goes to the Mortons' home, where Anne's father informs Guy that his wife has been murdered. Anne's sister Barbara says that the police will think that Guy is the murderer since he has a motive. The police question Guy, but cannot confirm his alibi: a professor Guy met on the train was so drunk that he cannot remember their encounter. The police assign an escort to watch him.
Bruno follows Guy around Washington, introduces himself to Anne, and appears at a party at Senator Morton's house. To amuse another guest, Bruno playfully demonstrates how to strangle a woman. His gaze falls upon Barbara, whose appearance resembles Miriam's. This triggers a flashback; Bruno compulsively squeezes the woman's neck, and other guests intervene to stop him from strangling her to death. Barbara tells Anne that Bruno was looking at her while strangling the other woman, and Anne realizes Barbara's resemblance to Miriam. Her suspicions aroused, Anne confronts Guy, who tells her the truth about Bruno's scheme.
Bruno sends Guy a package containing a pistol, a house key, and a map showing the location of his father's bedroom. Guy creeps into Bruno's father's room to warn him of etc..