The Hounds of Baskerville order to test his theory. He also points out Sherlock was wrong for once; he believed the drug was in Henry's sugar and put it in John's coffee. In the closing scenes, Mycroft oversees the release of Jim Moriarty (Andrew Scott) from a holding cell in which he has written Sherlock's name all over the walls. The story is based on Arthur Conan Doyle's novel "The Hound of the Baskervilles", and also contains plot devices and lines from other Doyle stories: In June 2011, it was announced that Russell Tovey would appear in "Sherlock" series two in its second episode.
The Hound of the Baskervilles (1983 film) the Baskervilles" were ultimately filmed before Granada Television's "Sherlock Holmes" series premiered in 1984. A proposed third film, "Hands of a Murderer" (originally entitled "The Prince of Crime") was eventually made with Edward Woodward as Sherlock Holmes and John Hillerman as Dr. John H. Watson. In an interview with "Scarlet Street", Ian Richardson explained: Denholm Elliot was case as Dr. Mortimer having previously portrayed Stapleton in the comedy spoof version of the Hound starring Dudley Moore and Peter Cook. He also appeared with "Hound" co-star Connie Booth in the spoof "The Strange Case of the End of Civilization as We