The background of the novel is a murder case that shocked the whole country in Jiangyang City (fictional). It revolves around the psychological changes of the protagonists Jin Chuan and He Zifan. The protagonist gradually wakes up and embarks on a journey of self-redemption through reflection and repentance, while He Zifan Fan relied on his talent and arrogance, coupled with his superior family conditions, and was eventually blinded by interests, hatred, and vanity. He used money and power to embark on a path of no return, which made the original case more confusing, and the truth and people's perceptions gradually became different. In order to persevere Principles and what he believed to be justice, former policeman Xiong Qisheng resigned from the police station and investigated the case in his private name. Under his persistent pursuit, the truth finally came to light. The interest groups that were obstructing him were defeated one after another, so that the case finally received a fair trial and gave Jin Chuan a relatively fair ending. The protagonist also grew up in these ups and downs for dozens of days, understood many things, and also learned the profound meaning of the original sin mentioned by the priest in prison. This article uses the first perspective of four different people's understanding of the case, and promotes the development of the story with a limited perspective, making the plot richer and more exciting than a single person. The article mainly writes about the changes in the thoughts and emotions of the characters, and the impact of the case on people. It focuses on human nature and people's hearts, and writes less about bloody and violent scenes. It pursues realism, thinks more about people, and less about people's sensory stimulation. It is biased toward literature, and there is less of the impetuous atmosphere and wild imagination of the Internet.