Gao Jian is the forensic scientist of the criminal police team. He discovered that every once in a while, a murder case that perfectly replicated a famous unsolved case in history would occur in the city where he was located. From the characteristics of the victim, the method of committing the crime to the layout of the scene, it was exactly the same. What's even weirder is that all the evidence perfectly points to the original murderer who has been dead for many years...
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