Stapleton kept a huge, half-starved, vicious dog (played by a Great Dane) trained to attack individual members of the Baskervilles after prolonged exposure to their scent. However, when the hound is finally sent to kill Sir Henry Baskerville, Holmes and Watson arrive to save him just in time. They kill the hound. Stapleton then traps Holmes down in the hound's underground kennel, and sends Watson into the moor to meet Holmes. Holmes cuts his way out of the kennel and returns to the house and destroys the poison that Stapleton had just given to the wounded Baskerville. Stapleton pulls a gun and flees. Holmes says ominously, "He won't get very far. I've posted constables along the roads and the only other way is across the Grimpen Mire." Holmes is praised for his work on the case, and he turns in.