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 Moor (novel) The Moor (novel) The Moor is the fourth book in Mary Russell series by Laurie R. King. Mary Russell and Sherlock Holmes investigate strange goings-on on Dartmoor. Reprising the setting and some of the plotlines of "The Hound of the Baskervilles", Holmes and Russell come to the aid of the Reverend Sabine Baring-Gould. For an excerpt of the first chapter, go to Laurie R. King's website. The events in the book take place between September and November 1923. The book opens with Mary Russell receiving a telegram to come immediately to Devon and to bring her compass. Initially Mary is