In a dramatic final scene, Holmes and Watson use the younger Baskerville as bait to catch Stapleton red-handed. After a late supper at the Stapletons', Sir Henry heads home across the moors, only to be waylaid by the enormous Stapleton pet. Despite a dense fog, Holmes and Watson are able to subdue the beast, and Stapleton, in his panicked flight from the scene, drowns in a marshland on the moors. Beryl Stapleton, who turns out to be Jack's harried wife and not his sister, is discovered tied up in his house, having refused to participate in his dastardly scheme.
During his career, Holmes works for the most powerful monarchs and governments of Europe (including his own), wealthy aristocrats and industrialists , and impoverished pawnbrokers and governesses . Although when the stories begin Holmes initially needed Watson to share the rent for their residence at 221B Baker Street, by the time of "The Final Problem", he says that his services to the government of France and the royal house of Scandinavia had left him with enough money to retire comfortably. The detective is known to charge clients for his expenses and claim any reward offered for a problem's solution; in " The Adventure of the Speckled Band " he says that Helen Stoner may pay any expenses he incurs and asks the bank in "The Red-Headed League" to reimburse him for money spent solving the case. Holmes has his wealthy banker client in " The Adventure of the Beryl Coronet " pay the costs of recovering the stolen gems, and claims the reward posted for their recovery. In " The Problem of Thor Bridge ", the detective says, "My professional charges are upon a fixed scale. I do not vary them, save when I remit [omit] them altogether". In this context, a client is offering to double his fee, and it is implied that wealthy clients habitually pay Holmes more than his standard fee.
As noted above Watson reports Holmes skilled in the martial arts of singlestick and sword fencing-although the only use a sword by Holmes is the Jeremy Brett adaptation of " The Adventure of the Naval Treaty " in which Holmes uses a sword-cane to force Joseph Harrison to give up the stolen treaty papers! Holmes is also quite skilled in the use of unarmed combat-such as using jujitsu to knock the murderous Professor Moriarty to his doom and also in the art of boxing - he fought three rounds with prizefighter McMurdo ("The Sign of the Four"); he beat Joseph Harrison, and he knocked out the bully Woodley with a straight left cross ("The Adventure of the Solitary Cyclist"). Nevertheless Holmes has received injuries during his career - a knife cut on his right hand ("The Adventure of the Naval Treaty"); a cut on his right knuckles from a fight with a thug of Professor Moriarty ("The Adventure of the Final Problem"); being nearly strangled by the Cunninghams ("The Adventure of the Reigate Squire"); being beaten by the thugs of Baron Gunther ("The Adventure of the Illustrious Client"); Holmes also lost one of his canine teeth in a fight with a criminal named Matthews at Charing Cross Station ("The Adventure of the Empty House").