There's an old legend that says the Baskerville family is cursed. As eternal punishment for the crime of Sir Hugo Baskerville in the 16th Century, all male descendants of the family are doomed to die a violent, unnatural death. The latest descendent, Lord Charles Baskerville is found dead in the dark moors of Dartmore; dead of a heart attack caused by severe fright. Was it the infamous hellhound, which --- according to legend --- lives on the moor that drove Lord Baskerville to his death? Dr. Mortimer is family friend, who journeys to London to seek the help of Sherlock Holmes. Lord Henry Baskerville, nephew and heir to the Baskerville estate, is on his way to the castle to claim his inheritance. But Dr. Mortimer fears his life is in danger. Can Holmes and his assistant Dr. Watson solve the mystery?