Dark Intruder is a 1965 television movie that was released theatrically. It is a horror film starring Leslie Nielsen, Mark Richman and Judi Meredith set in San Francisco in 1890 concerning playboy sleuth Brett Kingsford (Nielsen). Kingsford is an expert on the supernatural and along with his dwarf assistant Nicola he helps the police uncover the scheme of a Sumerian demon to return to earth and take over a human body.