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 (1978 film) the case so far. An invitation arrives for Sir Henry, asking him to dinner at Merripit Hall. Suspecting a trap, Watson goes along with Sir Henry while Holmes observes carefully. Mrs. Stapleton resumes her bizarre acts and begins to vomit pale-blue liquid over Sir Henry, whilst Mr. Stapleton's chihuahua urinates in Watson's soup. Ordered to leave in disgrace, the Stapletons, Dr. Mortimer, Mr. Frankland, and his daughter Mary follow Sir Henry and Watson to kill them, but become trapped in a quagmire. Holmes then proceeds to reveal that the Hound is no more than a large, rather friendly Irish wolfhound