American heiress Henrietta Doran (known as Hatty) marries Lord St Simon, but she vanishes without trace on her wedding day, leaving London agog. Later, the police find her wedding dress in the Serpentine, a lake in a London park, with a note in the pocket of the dress. Hatty was last seen with Flora Millar, an old flame of St Simon's, and Scotland Yard speedily arrests Flora. While investigating the case, Holmes suffers from nightmares, which he sees as a factor in the mystery.moreless
Holmes investigates a killing which has all the hallmarks of the worst kind of Transylvanian vampire. He is sceptical (to say the least) about the possibility that the undead are up to their mischief just a short train journey from his rooms in Baker Street.
Holmes and Watson are called in to deal with a blackmailer. A dazzling young lady is about to be married, and Charles Augustus Milverton, the slithery king of all blackmailers, has letters she wrote to another man. Watson is astonished when Milverton calls at Baker Street at the invitation of Holmes, who has a plan to thwart him.
As ever, things are not quite as they appear to be.moreless