Sherlock Holmes receives a request for aid from Lord Charles Cary, whose family is seemingly being threatened by ghosts in and around the family manor, Torre Abbey. Once a monastery, the abbey has a long history of hauntings. While skeptical of the supernatural, Holmes does believe that the Carys are in danger, a belief that proves horrifyingly accurate when, shortly after Holmes and Watson arrive, a household member dies mysteriously, seemingly of fright. As strange sightings and threatening apparitions become almost commonplace, the companions must uncover the secrets of the abbey if they...