Chasing the Murderer in the Dark Night and the Cracks Leading to the Final Volume

Criminal investigation expert Luo Yaoran was accidentally transferred to the cold case team and was forced to join forces with criminal profiler Cao Qingqing. When a serial murder imitates an old case twenty years ago reappears, they find that all the clues point to a ghost that has long been "dead", and they themselves become the next target on the prey list.