12 Angry Men is a 1957 American courtroom drama film directed by Sidney Lumet, adapted from a teleplay of the same name by Reginald Rose. This courtroom drama tells the story of a jury of 12 men as they deliberate the conviction or acquittal of a defendant on the basis of reasonable doubt, forcing the jurors to question their morals and values. In the United States, a verdict in most criminal trials by jury must be unanimous. The defendant is an 18-year-old male. There are two witnesses: a lady from across the street and an old man who lives below the defendant.