Sherlock Holmes is in possession of a pack of cards that once belonged to his diabolical nemesis Professor Moriarty. Is his nemesis back from the dead? Or is this all an elaborate trick left behind to plague the great detective? Puzzlers can join Holmes and his ever-loyal assistant Dr John Watson as they attempt to solve the mysteries that Moriarty has hidden within. These narrative puzzles are accompanied by delightful illustrations inspired by the original Sherlock Holmes tales, recreating the cosy Victorian charm that the stories are soloved for.