When Sir Charles Baskerville is found dead, his face distorted with shock and horror, Sherlock Holmes and Dr Watson are faced with a sinister and difficult puzzle. A fearsome creature stalks the wild and barren hills of Dartmoor. Is it a demon from the spirit world? Will it defeat their skill and courage? Who is the tall, mysterious figure seen lurking on the moor at night? Can Holmes save Sir Henry, the new owner of Baskerville Hall, from the ancient family curse? Or will the terrifying hound claim yet another victim?

When Dr Watson agrees to share lodgings with Sherlock Holmes, he soon finds himself involved in a shocking and mysterious murder case. What will Holmes discover when he examines the body? There are no marks on the dead man, so why is there so much blood at the scene of the crime? Inspector Lestrade and Inspector Gregson have asked Holmes to help them. But will they listen to his advice? Can the famous detective and his new friend discover the truth before the murderer strikes again?

When Miss Mary Morstan is invited to meet a secretive stranger, she asks Sherlock Holmes and Dr Watson to help her. Captain Morstan has disappeared from his hotel without a trace. Should Miss Morstan dare to hope that her father is still alive? What horrible scene awaits the famous detective and his friend when they break down the door to Bartholomew Sholto’s attic room? Who is the man with the wooden leg, and why is he so full of bitterness and hatred? Will Toby, the cleverest tracker dog in London, help Holmes and Watson solve one of their most difficult cases?