Dull film somewhat redeemed by its stars. Leigh is a married woman carrying on with Olivier. When her husband confronts them, Olivier accidentally kills him in a fight. They keep quiet but then a mentally deranged man is taken into custody for the crime. Since he will be held 21 days before coming to trial, the lovers decide to spend the time together before Olivier confesses. Based on the play "The First and the Last" by John Galsworthy.