A series of daring diamond robberies in London's fashionable West End by a thief who leaves a calling card /strong>Kit Aston, aided and abetted by his fiancée, Mary Cavendish and a young film-making chauffeur, Alfred, investigate. What seems a straightforward simple case spirals out of control as London gangland's 'Elephant Boys' become involved. A fast-paced whodunnit, sparking with romance and humour, this is the most engaging detective duo since Nick and Nora (The Thin Man)!