Following the closing arguments in a murder trial, the twelve members of the jury must deliberate, with a guilty verdict meaning death for the accused, an inner-city teen. As the dozen men try to reach a unanimous decision while sequestered in a solitary, sweltering room, one juror (Henry Fonda, The Ox-Bow Incident) casts considerable doubt on elements of the case. Personal issues soon rise to the surface, and conflict threatens to derail the delicate...