12 Angry Men is a 1957 American drama film adapted from a teleplay of the same name by Reginald Rose. Written and co-produced by Rose himself and directed by Sidney Lumet, this trial film tells the story of a jury made up of 12 men as they deliberate the guilt or acquittal of a defendant on the basis of reasonable doubt. In the United States, a verdict in most criminal trials by jury must be unanimous. The film is notable for its almost exclusive use of one set: out of 96 minutes of run time, only three minutes take place outside of the jury room.