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 (1959 film) are illegitimate descendants of Sir Hugo and are next in line to inherit the Baskerville fortune and mansion if all of the Baskervilles perish. Holmes deduces this after questioning Barrymore about the missing portrait; it was stolen because it revealed the fingers on Sir Hugo's right hand were webbed just like Stapleton's. Cecile takes Sir Henry out onto the moor so that he may be killed by the hound. Holmes and Watson rush out just in time to hear Cecile reveal her intentions to a horrified Sir Henry. The dog attacks Sir Henry. Stapleton attacks Watson with the legendary curved