Jin Jin continued to collect clues, and the puppy love past of Qiu Yue and Su Muzhou was revealed, and at the same time, the arson case ten years ago was revealed.
At this time, the body parts marked with the number “4” appeared, and the threatening letter in the bag completely confirmed that there was a connection between the corpse dumping case and the arson case.The police caught the person who dumped the body - Qiu Yue's teacher Pang Beiyuan, but Dai Yu discovered that he did not fit the profile of the murderer.