Sir James Damery, acting for a very illustrious client, consults Holmes. Violet Merville is engaged to marry the Austrian Baron Gruner, who has murdered at least one wife and yet the foolish, headstrong Violet will not...展开hear a word against him. The client is fearful for Violet's safety should the marriage go ahead. Holmes enlists the assistance of Kitty Winter, a woman whom the Baron used and threw aside, to get access to Gruner's album in which he has catalogued his conquests, to make Violet see him in his true light