四签名

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.