When the story begins, Sir Charles Baskerville has died under mysterious circumstances. The man believed to be his only living relative, his nephew Sir Henry Baskerville (played by Daniel Berthon), has come from Canada to claim the family estate at Baskerville Hall in Devon.

He meets the servants, John and Eliza Barrymore (Garry Robinson and Cheryl Browne) and the neighbours, John (Trent Scharenguivel) and Beryl Stapleton (Madeline Woods) and Laura Lyons (Kirsten Doyle), a woman Sir Charles Baskerville helped set up in a typing business and in whom he took a fatherly interest.

A family friend, Dr Mortimer (Adrian Lovelock) is suspicious about Sir Charles's death and concerned about Sir Henry's safety and the two of them go to London to seek the advice of the great detective Sherlock Holmes (Phil Meddows). Holmes sends his loyal friend and assistant, Dr Watson (Peter Fock), back to Devon with the men to investigate and a strange tale emerges.

"There was a legend about the Hound of the Baskervilles, a huge demonic beast that plagued the Baskerville family," Wilson says. It is said to have killed the original Baskerville, Hugo, an evil man.

Could that unearthy creature be back to terrorise, and destroy, another generation or two of the Baskervilles? Or is there another explanation?

Sherlock Holmes, renowned as the world's greatest detective, is on the case with the help of Dr Watson.