A Mysterious Sherlock Holmes

The Hound of Baskerville tells the story of American Sir Henry Baskerville, the heir to a considerable estate after the death of Sir Charles Baskerville. According to a West Country legend, a huge demon dog roams the moors and seeks an ancient vengeance against the Baskervilles. Sherlock Holmes is invited by a certain Dr. Mortimer to investigate the matter for the benefit of Sir Henry. What happens next? Is Sherlock Holmes able to see through the family curse?