<P> Barrymore arouses further suspicion when Watson and Sir Henry catch him at night with a candle in an empty room . Barrymore refuses to answer their questions, but Mrs. Barrymore confesses that Selden is her brother, and her husband is signalling that they have left supplies for him . Watson and Sir Henry pursue Selden on the moor, but he eludes them, while Watson notices another man on a nearby tor . After an agreement is reached to allow Selden to flee the country, Barrymore reveals the contents of an incompletely burnt letter asking Sir Charles to be at the gate at the time of his death . It was signed with the initials L.L.; on Mortimer's advice, Watson questions a Laura Lyons, who admits to writing the letter in hopes that Sir Charles would help finance her divorce, but says she did not keep the appointment . Watson tracks the second man he saw in the area and discovers it to be Holmes, investigating independently in hopes of a faster resolution . Holmes reveals further information: Stapleton is actually married to the supposed Miss Stapleton, and he promised marriage to Laura Lyons to get her cooperation . </P> <P> They hear a scream and discover the body of Selden, dead from a fall . They initially mistake him for Sir Henry, whose old clothes he was wearing . </P> <P> 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 Miss Stapleton bound and gagged inside the house, while Stapleton apparently dies in an attempt to reach his hideout in a nearby mine . They also find Sir Henry's boot, which was used to give the hound Sir Henry's scent . </P> <P> Weeks later, Holmes provides Watson with additional details about the case . Stapleton was, in fact, Rodger Baskerville's son, also named Rodger . His now - widow is a South American woman, the former Beryl Garcia . He supported himself through crime for many years, before learning that he could inherit a fortune by murdering his uncle and cousin . Stapleton had taken Sir Henry's old boot because the new, unworn boot lacked his scent . The hound had pursued Selden to his death because of the scent on Sir Henry's old clothes . Mrs Stapleton had disavowed her husband's plot, so he had imprisoned her to prevent her from interfering . </P>

Hound of the baskervilles description of the hound