The Sign of the Four and play adaptations insure this book: The Sign of the Four was also adapted for radio by Bert Coules in 1989 as part of BBC Radio 4's complete audio Sherlock Holmes, with Clive Merrison as Holmes, Michael Williams as Watson, and featuring Brian Blessed as Jonathan Small. The Sign of the Four The Sign of the Four (1890), also called The Sign of Four, is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Doyle wrote four novels and 56 short stories featuring the fictional detective. The story is set in 1888. "The Sign of the Four"
The Adventures of Sherlock Holmes (film) talkie "The Return of Sherlock Holmes", starring Clive Brook, it was never featured in a canonical Arthur Conan Doyle story; although once Holmes said, in "The Adventure of the Crooked Man", "Elementary". During the scene in which Holmes crashes the garden party dressed as a music hall performer, he sings "I Do Like To be Beside the Seaside". This is an anachronism, since the film is set in 1894, but the song was written in 1907. The scene in which Holmes experiments with the flies in the glass while playing the violin is recreated in the 2009 film "Sherlock Holmes",