In this chapter of "The Hound of the Baskervilles," Sherlock Holmes and Dr. Watson are determined to catch the culprit behind the mysterious death of Sir Charles Baskerville and the threat to his heir, Sir Henry Baskerville. They discover that the neighbour of the Baskervilles, Jack Stapleton, was responsible for the death of Charles and is now plotting a similar fate for Sir Henry.
Stapleton has been raising a ferocious dog that he ....