Which 1957 film depicts a jury deliberating a murder verdict in a single room?

The 1957 film about a jury deliberating a murder verdict in one room is 12 Angry Men.

Directed by Sidney Lumet, the film follows 12 jurors deciding whether a teenager is guilty of killing his father. What initially appears to be an open-and-shut case becomes a tense debate about evidence, reasonable doubt, prejudice, social pressure, and the responsibility of ordinary citizens.

Henry Fonda plays Juror 8, the first member to resist a unanimous guilty verdict. The story unfolds almost entirely in the jury room, where the changing temperature, crowded space, and shifting alliances intensify the drama. The film was adapted by Reginald Rose from his 1954 television play of the same name.

12 Angry Men received three Academy Award nominations, including Best Picture, Best Director, and Best Adapted Screenplay, but won none. It is often confused with Anatomy of a Murder, another courtroom-focused film, yet that 1959 movie centers on lawyers and a trial rather than jurors deliberating privately.