Dark Intruder is a 1965 horror film that starred Leslie Nielsen, Mark Richman and Judi Meredith. The film is set in San Francisco in 1890 concerning playboy sleuth and occult expert Brett Kingsford. This atmospheric black-and-white film, only 59 minutes long, was directed by Harvey Hart and was the pilot for a failed television series called The Black Cloak. It was written by Alfred Edgar (1896–1972), a British writer who wrote under the pseudonym of Barré Lyndon.