Sleuth is a comedy drama play by Anthony Shaffer. It tells the story of a man who invites his wife's lover to his home, in order to play games with him before he kills him. In 1972 it was made into a movie starring Laurence Olivier, Michael Caine, Alec Cawthorne, John Matthews and Eve Channing.
The movie was adapted by Shaffer from his play, and directed by Joseph L. Mankiewicz.