Directed by Terence Fisher and produced by Hammer Film Productions.Sherlock Holmes and Doctor Watson meet with a certain Dr. Mortimer, who tells them of the legend of the "hound," born out of a murder committed by Sir Hugo Baskerville centuries ago. Explaining that Sir Charles Baskerville recently died in the same location as Sir Hugo, Mortimer expresses his deep concern that Sir Henry, the new heir to the Baskerville estate, will also fall prey to the evil curse. Holmes sets out to investigate.

A traveller arrives at the Usher mansion to visit his old friend, Roderick Usher. Upon arriving, however, he discovers that Roderick and his sister, Madeline, have been afflicted with a mysterious malady