24 Hours is a 1931 American pre-Code romantic drama film starring Clive Brook, Kay Francis, Miriam Hopkins and Regis Toomey. It was based on the novel Twenty-Four Hours by Louis Bromfield and the play Shattered Glass by Will D. Lengle and Lew Levenson. An alcoholic married man is accused of murdering the woman with whom he has been carrying on an affair. The title comes from the fact that the film takes place from 11 pm one night to the same time the following night.