chunk: At Baskerville Hall, Holmes notices a resemblance between Stapleton and a portrait of Hugo Baskerville. He realises that Stapleton could be an unknown Baskerville family member, seeking to claim the Baskerville wealth by eliminating his relatives. Accompanied by Inspector Lestrade, whom Holmes has summoned, Holmes and Watson travel to the Stapleton home, where Sir Henry is dining. They rescue him from a hound that Stapleton releases while Sir Henry is walking home across the moor. Shooting the animal dead in the struggle, Sherlock reveals that it was a perfectly mortal dog - a mix of bloodhound and mastiff, painted with phosphorus to give it a hellish appearance. They find Mrs. Stapleton bound and gagged inside the house, while Stapleton apparently dies in an attempt to reach his hideout in a nearby mire. They also find Sir Henry's boot, which was used to give the hound Sir Henry's scent.