Story about the remarkable friendship between a reclusive writer and illustrator and a chaotic homeless man, whom he gets to know during a campaign to release two charity workers from prison.

Sherlock Holmes and Dr. Watson are called in to unravel a mysterious curse that has plagued the Baskerville family for generations. When Sir Charles Baskerville is found dead, his heir, Sir Henry, begs Holmes to save him from the terrifying supernatural hound that has brought fear and death to his household.