A pair of murders, a little romance, and rivals in pursuit of a long-lost vintage car of unfathomable value--Bruno, chief of police, is busy in another mystery set in the beautiful Dordogne. Bruno's biggest worry at the annual fête in St. Denis is surviving as a last-minute replacement navigator in a car rally race. A young Englishman tells Bruno an intriguing story about a Bugatti Type 57C, lost somewhere in France during World War II. Among the most beautiful cars ever made, it is worth millions and drives its pursuers mad with greed. When two deaths occur during the festivities, Bruno suspects that the events in St. Denis are linked to international crime.