12 Angry Men (1957)
For a first film for the director, this one’s a masterpiece. The entire movie involves a jury deliberating over the guilt or innocence of a man on trial, and keeping all the action within the jury room, is what makes this film worth it. The camera work is stellar, keeping everything tight and close, creating a sense of tension and claustrophobia.
While the story itself does have it’s predictable twists and turns, it’s the atmosphere and thrilling nature of the narrative that makes this film one of the best.