The Sign of Four

The Sign of Four is a 1923 British silent mystery film directed by Maurice Elvey and starring Eille Norwood, Isobel Elsom and Fred Raynham. The film is based on the 1890 novel The Sign of the Four by Arthur Conan Doyle, and was one of a series of Sherlock Holmes films starring Norwood.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.