Pen-Lai District, North East China, AD 663. Newly arrived from the Imperial Capital to take up his first post as Magistrate, Judge Dee is at once confronted with three eerie and baffling mysteries which test his analytical and deductive powers to the limit, drawing him along a trail of blood leading to a criminal of boundless ambition -- and to a plot which will rock the vast bureaucracy of the mighty T'ang Empire!.