In 2015, Shi Jinpo, a justice-minded young man, graduated from an ordinary university and joined the police through open recruitment. Burning with passion and eager to join the criminal investigation squad and solve major cases, he instead found himself assigned to a police station, where he spent every day dealing with petty incidents and running himself ragged. As he gradually learned from each callout, he grew from a complete rookie into a skilled investigator adept at spotting the smallest clues. Opportunity favors the prepared, and after his outstanding deductions in one case caught the attention of the criminal investigation captain, he was transferred to the criminal investigation squad he had always dreamed of joining, beginning his career solving major crimes...
Chang Guoming is the captain of the Criminal Investigation Squad at the Chengqu Branch of the Xiadu Public Security Bureau. With 17 years in criminal investigation, he is a veteran detective who has solved countless cases and is the person chiefly responsible for homicide cases in his jurisdiction.
Wan Jiaan is a forensic doctor at the Chengqu Branch of the Xiadu Public Security Bureau. With over ten years in the police force, he is primarily responsible for examining homicide scenes, collecting and analyzing biological evidence, and performing autopsies.
Lin Qingbi is a forensic technician at the Chengqu Branch of the Xiadu Public Security Bureau. Her delicate features give her an inexplicable charm, so her colleagues affectionately call her “Little Lin.” She examines crime scenes. Despite her mother’s objections, she resolutely chose to work at the round-the-clock forensic identification center, where she has now served for more than three years.