The Hound of the Baskervilles is a 1939 mystery film based on the novel The Hound of the Baskervilles by Sir Arthur Conan Doyle. It was directed by Sidney Lanfield and produced by 20th Century Fox. It is the best-known cinematic adaptation of the book, and is often regarded as one of the better film versions of it.[1] The film stars Basil Rathbone as Sherlock Holmes, Nigel Bruce as Dr. Watson and Richard Greene as Henry Baskerville. Because the studio apparently had no idea that the film would be such a hit, and that Rathbone and Bruce would make many more Sherlock Holmes films and be forever linked with Holmes and Watson, top billing went to Richard Greene, who was the film's romantic lead. Rathbone was billed second. Wendy Barrie, who played Beryl Stapleton, the woman with whom Greene falls in love, received third billing, and Nigel Bruce, the film's Dr. Watson, was billed fourth. In all other Holmes films, Rathbone and Bruce would receive first and second billing. The Hound of the Baskervilles also marks the first of the fourteen Sherlock Holmes movies starring Rathbone and Bruce as the detective duo.