[Notes + Suspense + Reasoning + Real Cases] Lao Ma is a college student who has just graduated from the police academy, and Lao Niu is an auxiliary police officer specially recruited after graduating from an independent school. The two were about the same age and were assigned to the criminal police team at the same time. One is responsible for criminal investigation and the other is responsible for intelligence. The two people are accustomed to taking notes and experiences during the investigation of cases to discuss the case. Tells about each complicated case and the story behind the case.
