Summoned to a run-down former strip joint, Dr. Alex Delaware and LAPD Lieutenant Milo Sturgis find themselves crashing a wild "Saints and Sinners"–themed wedding reception. But they’re not the only uninvited guests. A horrified bridesmaid has discovered the body of a young woman, dressed to impress in pricey haute couture and accessorized with a grisly red slash around her neck. What’s missing is any means of identification, or a single partygoer who recognizes the victim. The baffled bride is convinced the stranger snuck in to sabotage her big day --- and the groom is sure it’s all a dreadful mistake. But Delaware and Sturgis have a hundred guests to question, and a sneaking suspicion that the motive for murder is personal.