After identification by the identification department, the pattern of the soles and the soil on the shoes found at Liao Yunsheng's home were consistent with what the police found in the Bat Cave. In addition, Liao Yunsheng had participated in the bovine tuberculosis experiment, and the police determined that he had been to the crime scene. Now Liao Yunsheng is the biggest suspect.The hair found in the pork shop belonged to Xie Yaoqi, and the phone that rang at Liao Yunsheng's residence belonged to Li Shuting. Han Feng initially suspected that Liao Yunsheng had tied up Xie Yaoqi and Li Shuting after killing Ye Yingying.Qi Sizhe identified the residue in the syringe found at Liao Yunsheng's home as funnelweed, which was the same as that found in Ye Yingying's body.

Han Feng and the others went to look for clues separately. Qi Sizhe went to see his senior fellow psychiatrist Chen Chuchuan. Chen Chuchuan told Qi Sizhe that there is a mental illness called lycanthropy. When the disease occurs, one will imagine oneself as an animal or insect. The cause of the disease is very complicated, and it may be the family of origin, excessive medication or drugs.Qi Sizhe looked through the books and information in Liao Yunsheng's greenhouse, which talked about the habits of funnel spiders. Judging from the 13 days on the desk calendar, it should be the time from mating to laying eggs for funnel spiders, so he tied the victim into the shape of an egg.

I learned from pet dealers that if the funnel spider’s original living environment is destroyed, it will find a new place to weave its web.Based on the suspect's behavioral logic, Han Feng told Zhu Qingyue that Qi Sizhe once said that female spiders kill male spiders after mating, so the victim is not prey but an egg.The alarm platform once received a call, probably from Li Shuting. Han Feng went to listen to the recording. When he was at a loss, Qi Sizhe came. He proposed to search the cave and the vicinity of Liao Yunsheng's home. Han Feng made arrangements, asked the regional police stations for assistance, and then drove out with Qi Sizhe.Li Xiaoxi found a suspicious person from the surveillance camera, located near the abandoned factory that Qi Sizhe and others judged, so Han Feng drove over.

After arriving at the abandoned factory, Han Feng and Zhu Qingyue split up, while Su Huaining and Qi Sizhe searched separately.Qi Sizhe was attacked by a man in black. Han Feng rushed over and the man in black escaped. After chasing him, Han Feng found Li Shuting who was about to suffocate with her head wrapped in plastic wrap.Li Shuting confessed to the police that Xie Yaoqi was in a relationship with Liao Yunsheng. She wanted to go to Liao Yunsheng's house to find Xie Yaoqi, but she was knocked unconscious and moved to an abandoned factory.Li Shuting said that she didn't see the other person's face clearly, but she knew that the other person thought she was a spider, so she wrapped the plastic wrap around her.Qi Sizhe always felt that something was wrong. According to the current clues, it was unreasonable for the murderer to change his behavior and arrest Li Shuting, or there might be some special reason.After hearing this, Han Feng took Qi Sizhe back to the abandoned factory again.

There were funnel spider webs specially made by the murderer in the first two scenes, but not in the abandoned factory. Qi Sizhe couldn't figure it out, and Han Feng also thought it was unreasonable.If the murderer changed his behavioral logic, he would kill Xie Yaoqi early, and the time left would be getting less and less.Chen Chuchuan was driving and encountered a check-in. When he returned, he heard from the front desk that a patient had imagined that he was a spider, but he left before registering. He told Qi Sizhe about this.The surveillance video was not clear, and the front desk could not clearly see what the other person looked like.

After checking all the surveillance cameras where the suspect passed by, the police targeted the community near the elevated highway.The police station in the area contacted the neighborhood committee, and together with the water and electricity bill collected from the greenhouse, Han Feng and the others quickly found the suspect's residence. There was no one inside. There were cow pathology books on the coffee table. There was a human cocoon in the back room, which was Liao Yunsheng.