The Sign of Four

The Sign of Four (a.k.a. Sir Arthur Conan Doyle's The Sign of Four) is a 1983 British made-for-television mystery film directed by Desmond Davis and starring Ian Richardson and David Healy. The film is based on Sir Arthur Conan Doyle's 1890 novel of the same name, the second novel to feature Sherlock Holmes and Doctor Watson. Production In 1982, American producer Sy Weintraub partnered with English producer Otto Plaschkes to make six television films of Sherlock Holmes stories. Charles Edward Pogue was enlisted to pen the screenplays but only The Sign of the Four and The Hound of the Baskervilles were ultimately filmed as Granada Television's Sherlock Holmes series premiered in 1984. In an interview with Scarlet Street, Ian Richardson explained: