The Strange Door (1951) is a period drama cross horror film, released by Universal-International. The film starred Charles Laughton, Boris Karloff, Sally Forrest and Richard Stapley. Karloff's role is actually a support one but his name carried significant weight in the billing. It was directed by Joseph Pevney and was based on the short story, The Sire de Maletroit's Door by Robert Louis Stevenson. Its alternative title was Robert Louis Stevenson's The Strange Door.