Old School Gumshoe: Hardcore Murder Chase in the 1990S

In 1995, Hefeng City, the steel city. A murder case in Tongzilou, like a needle, pierced the seemingly peaceful curtain under the restructuring of state-owned enterprises. As a result, the retirement plan of veteran detective Zhang Jianjun was put on hold. Faced with an almost perfect scene - no signs of forced entry, no valid fingerprints, only half a vague mud footprint, and the neighbors' cryptic confessions - he smelled a familiar and dangerous atmosphere: this was by no means a spontaneous murder. "Li Ming", his new apprentice, a top student who graduated from the police academy, is full of modern criminal psychology, but he has to learn to measure every corner of the city with his feet under the scolding of his master's "clumsy method". They have to restore the last 48 hours of the deceased's life in the predicament of no surveillance and no DNA. An old food stamp accidentally discovered and a work manual full of numbers became the only fulcrum to break the deadlock. However, as the investigation deepens, the truth becomes more confusing. Witnesses "lost their memory" at critical moments, key evidence disappeared, and resistance to the case came from within... Everyone wore a mask, and there was a hidden edge in every word. Zhang Jianjun and Li Ming didn't know that they were approaching a secret that had been buried for more than ten years. This secret is coexisting with the glory and pain of this city, and the murderer may be standing in the spotlight, watching their every move with a smile...