The mystery stage play by Anthony Shaffer was adapted by the author into this stylish film from director Joseph L. Manciewicz. Laurence Olivier stars as Andrew Wyke, a best-selling author of detective fiction living in a grand 16th century mansion. Andrew is visited by Milo Tindle (Michael Caine), owner of a hair salon chain, and reveals to his guest that he's aware of Milo's affair with his wife Marguerite. Rather than being vengeful, however, Andrew professes he's glad to be rid of his troublesome spouse. To avoid paying heavy alimony, Andrew suggests that Milo disguise himself as a clown and steal his wife's expensive jewelry. That way Marguerite and Milo can obtain financial security while Andrew claims the loss on his insurance and all walk away rich. Andrew's plan is a devious one, however, designed to toy with his wife's lover, and a series of deceptions and counter-deceptions are launched in which nothing is as it seems, unfolding as an elaborate game of comeuppance between the two men. Ten years after Sleuth, Caine would assay a role not unlike Olivier's in the similarly-themed Deathtrap (1982).


Sleuth is a 1972 mystery thriller film directed by Joseph L. Mankiewicz. The screenplay by British playwright Anthony Shaffer was based on his 1970 Tony Award-winning play Sleuth. The film stars Laurence Olivier and Michael Caine, each of whom was nominated for an Academy Award for his performance. This was Mankiewicz's final film.


While questioning Wyke, Doppler points out that the clown costume that Tindle was wearing when he was shot is missing, though the clown's mask is later found and put on the head of the plastic skeleton in the cellar. He is probably implying that Tindle was buried with it.
In the trailer for the film, there are the scenes with Doppler laying out the evidence against Wyke as shown in the movie. They include him pulling open the shower curtains in one of the bathrooms and exposing the clown's jacket, dripping wet and apparently with bloodstains on it. This scene was not included in the final film.