The serial killings lasted for three years, with more than ten victims.
Pei Shi was arrested on the spot as a suspect in a murder case. According to the characteristics of the case, the case was judged to be a serial murder case that lasted for three years, and Pei Shi was designated as the thirteenth suspect. Pei Shi refused to explain the details of the case and insisted that he was the real murderer.
Li Fuyan felt that the murderer was someone else. Under the pressure of the victim's family and public opinion, he took Pei Shi to investigate secretly.
The results twist and turn again and again, who is the real thirteenth suspect?
Concept: The dark side of society, the multifaceted nature of people
