A Double Life is a 1947 film noir which tells the story of an actor whose mind becomes affected by the character he portrays. The movie starred Ronald Colman and Signe Hasso. It was directed by George Cukor and written for the screen by Ruth Gordon and Garson Kanin. Celebrated stage actor Anthony John (Ronald Colman) has driven away his actress wife Brita (Signe Hasso) with his erratic temper. However, they star together in the play Othello. Gradually, his portrayal of a jealous murderer undermines his sanity, and he kills his mistress, Pat Kroll (Shelley Winters).