A bizarre serial murder shocked Anjo. The victims were all young women. Their deaths were tragic, and no valuable clues were left at the scene. The criminal police brigade led by Shen Yan quickly launched an investigation, but the case progressed slowly and there was no clue. At this moment, when Lin Yu was dissecting the body of one of the victims, he found some subtle traces that pointed to a rare drug. He immediately informed Shen Yan of this discovery, and the two began to cooperate.
