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"
Murder Rooms: Mysteries of the Real Sherlock Holmes stars Ian Richardson as Dr Joseph Bell, alongside Robin Laing and later Charles Edwards as Sir Arthur Conan Doyle. The series was inspired by Sir Arthur Conan Doyle's choice to base the character of Sherlock Holmes on Dr Joseph Bell, who had been his tutor at the University of Edinburgh and occasionally worked as a forensic expert for the Edinburgh Police. The series exaggerated the similarities between Bell and Holmes for dramatic effect, with Doyle acting much as Doctor Watson acts in Doyle's stories, and included several scenes from the books, the implication being that these inspire Doyle's fiction. One