Chen Mo, the captain of the Jiangzhou City Criminal Investigation Detachment, is selfless but tender in his heart, leading the serious crime team to specialize in unsolved cases. Genius profiler Shen Zhiyao parachuted into the police force, has a doctorate in criminal psychology, and is as logical as a knife. Behind the bustling city, murders occur frequently, and paper cranes become symbols of death. Serial killers, spies, gangsters, and poison doctors are secretly wrestling with each other, and the cases are connected and each step is shocking. When the two first met, they were involved in the serial murder of a woman living alone, and the clues were confusing. When the investigation reaches a deadlock, a golden finger is obtained by accident. It can deeply analyze the traces of crimes, restore the psychological trajectory of the murderer, and predict the next move. The efficiency of solving crimes has improved by leaps and bounds, and the hidden real culprit has been accurately identified. While others were still looking for clues, they had gotten to the core. Ordinary cases can be easily solved, even complex mysteries can't be solved. Finally, the ten-year layout of the "Gray Network" organization was unveiled, shaking up the political and business shady scenes. When the truth comes to light, new mysteries quietly emerge.
