"Lady Montfort has been planning her annual summer costume ball for months, and with scrupulous care. Pulling together the food, flowers and a thousand other details for one of the most significant social occasions of the year is her happily accepted responsibility. But when her husband's degenerate nephew is found murdered, it's more than the ball that is ruined. In fact, Lady Montfort fears that the official police enquiry, driven by petty snobbery...