Louisa Trenton is an old friend of Mannering and she is clearly in financial trouble because she offers to sell him some miniatures which are very valuable and have long been in her family. Later she rings the Baron,who goes to meet her at a discotheque,but finds that she is dead. The police believe that she killed herself but Mannering is certain that she was being blackmailed - and that the blackmailer murdered her. He has several suspects to choose from.