In the third year of Chunyou in the Southern Song Dynasty, it snowed for the first time in Tingzhou. The body of Zhang Chengye, a grain merchant, floated in the cold river. It seemed that he had slipped and drowned. Song Ci, the newly arrived general prosecutor of the prison, saw through the forgery in the details of the corpse. He followed clues such as the jade pendant and blood-stained clothes and pointed out the conspiracy of the salt merchant Feng Yuan and the apostle Shen Wenyuan. He used his superb post-mortem and case-solving skills to uncover the entanglement of interests behind the murder and uphold the justice of the prison.
