In the incinerator of the abandoned factory, the charred corpse clutched half of a rusty police badge - this was the third "police badge burning case" in three months.
Shen Yan, a former forensic doctor, is currently suspended from work and runs a used bookstore. His fingertips always have the smell of disinfectant that cannot be washed away. He recognized that half of the police badge belonged to his master, Lao Zhou, who "accidentally died in the line of duty" three years ago, and the method of burning the body was exactly the same as in his master's case.
Lin Mo, a newcomer who just graduated from the police academy, met Shen Yan for the first time at the crime scene with the "Forensic Illustrated Book" given by Lao Zhou before his death. The man squatted in the ashes and picked up a piece of charred cloth with tweezers. His eyes were colder than the embers of the incinerator: "The murderer is imitating and provoking."
