Özet:
The speckled: In one of the finest Holmes adventurs that Sir Arthur Conan Doyle wrote the legendary sleuth Sherlock Holmes, (raymond Massey in his screen debut), uncovers a sinister plot while in the midst of solving a girl's murder case based on her two drying words - "Band" and "Speckled."
Silver blaze: The great detective, Sherlock Holmes, (Arthur Wontner) is called to the Baskervilles 20 years after his first adventure there to solve a double murder. His old enemy, Moriarty, is fixing a big horse race, and the owne of the racehorse involed, Silver Blaze, is a Baskerville.
Blake of Scotland Yard: A newly invented "Death Ray" has been stolen by "The Scorpion" (whose hand is an evil claw), but he is missing an important part. Will "The Scorpion" complete it before the intrepid Blake discovers his secret identity?.