A.D. 676In the fifth installment of Robert Van Gulik's ancient Chinese mystery series based on historical court records, detective Judge Dee is appointed to the magistrate of Pei-chow - a distant frontier district in the barren north of the ancient Chinese Empire. It is here that he is faced with three strange and disturbing crimes: the theft of precious jewels, the disappearance of a girl in love, and the fiendish murder involving the nude, headless body of a woman. And even more curious, the crimes seem to be linked together by clues from a popular game of the period, the Seven Board.