System: Retrospective Crime to Solve the Perfect Murder Case

Name: Lin Chen ​Identity: Junior intern at Jiangcheng Police Academy, holder of the crime traceability system ​Character: Calm and meticulous, with strong logical thinking, a little green at the beginning, but relies on the system to gradually show his talent for solving crimes. "Watchmaker Serial Murder Cases" broke out one after another in Jiangcheng. The victims had custom-made gear weapons inserted into their chests. The scene was as clean as if it had been washed with water. The police deemed it a "perfect murder" and were helpless. Lin Chen, an intern at the police academy, accidentally touched the brass gear at the crime scene and was bound to the [Crime Retrieval System] - touching the object with your fingertips can flash back to the crime fragments; in-depth interaction unlocks the complete crime process; the reasoning upgrade can also reversely deduce the murderer's next move! The rusty factory badge, the shutdown time of 2:17, the engraved gear hidden in the pendulum... The clues connect the suspected explosion of the Hongguang Instrument Factory twenty years ago. The three victims were actually the initiators of concealing the truth that year! "The murderer was not a random murder, it was revenge!" Lin Chen relied on system backtracking to break the police deadlock for half a month, saw through the identity disguise from the wear marks of gears, used reverse reasoning to predict the target of the fourth murder, and gradually tore apart the disguise of the perfect murder. But when the truth gradually emerged, he discovered that the explosion was not only an accident, but also a carefully planned conspiracy, and his ability to trace back had already been involved in a larger chess game... A perfect closed loop that cannot be seen through, old grudges that cannot be solved, let's watch the police academy interns use the system to change their lives against the odds, let the dead speak, and make evil happen!