Criminal investigation captain Qin Yan went crazy and personally escorted the real murderer Chen Xiao into the interrogation room of new interrogator Lin Xiao. Lin Xiao discovered that behind this serial murder case, there was a police scandal that was covered up ten years ago. As Chen Xiao's confession and the secret assistance of forensic doctor Su Rui were gradually pieced together, Qin Yan's collapse was not an accident, but a well-designed purge. And every step of "support" from Deputy Director Zhou Mubai is accelerating deeper darkness. When Lao Dao's hard drive was discovered, the truth just started to bleed out
