A large number of indecent videos were recorded on the CD in Liang Yi's secret room. The women in the videos were all women who had undergone cosmetic surgery with Liang Yi. Some of them were obsessed, and some were willing. Five of these video discs were missing, and Bureau Zhang felt that if the women recorded on the five discs were found, perhaps one of them was the murderer. Du Cheng asked Liang Yi's secretary to match the photos of the indecent video screenshots with the photos before their plastic surgery. The secretary only took over some patients, but she remembered that a girl named Ai Wen had a grudge against Liang Yi because of her plastic surgery failure. .
Shen Yi once mentioned that the woman in the surveillance video outside the plastic surgery hospital is likely to have failed plastic surgery, so Du Cheng quickly took Jiang Feng to find Ai Wen. Ai Wen's mother gave the two a call. After Du Cheng found Ai Wen, he found that Ai Wen, who had failed plastic surgery, was already unconscious, and now she has been living in a mental hospital.
The clue was interrupted. Du Cheng asked Director Zhang to report the case. The most urgent task was to confirm one by one after the plastic surgery and before the plastic surgery. Shen Yi was sure to complete this matter. He had to draw all the women based on the indecent video after the plastic surgery. The portrait before plastic surgery, Director Zhang arranged for Du Cheng and Shen Yi to do it together. Shen Yi said that he had drawn a portrait of the woman in the surveillance video outside the plastic surgery hospital. He wanted Du Cheng to recognize that he used Captain Lei's office, and Du Cheng asked Shen Yi to concentrate on his work. Shen Yi plastered the portraits all over the office, and Du Cheng compared the cases of plastic surgery women based on the portraits, and then summoned them one by one.
The women summoned had different performances, but they all had evidence of alibi. Now only one woman named Fan Ruoxuan had not come. In the dark of night, Fan Ruoxuan came to the police station. When she took off her mask, everyone found that she was almost exactly the same as the portrait drawn by Shen Yi, the woman who appeared outside the plastic surgery hospital. Fan Ruoxuan said that she was raped by Liang Yi and then failed plastic surgery. Lao Yan repeatedly interrogated her whether she killed Liang Yi, but Fan Ruoxuan explained that the time she went to the plastic surgery hospital did not match the time of Liang Yi's death. Liang Yi died. At night, she was locked in the police station all night for drunk driving. Shen Yi, who observed the suspect outside every interrogation, felt that Fan Ruoxuan did not lie, but Du Cheng found out that it was the case after investigation.
Du Cheng suspected that someone had changed the surveillance video outside the plastic surgery hospital. He took Jiang Feng to find Liu Lianming, who was on duty in the monitoring room that night, and found that Liu Lianming was dead. The cause of Liu Lianming's death was also cyanide poisoning. Du Cheng determined that Liang Yi's death and Liu Lianming's death were caused by a murderer, but no cyanide was found in the wine glass at the scene of Liang Yi's death, and not only cyanide was found in Liu Lianming's alcohol compounds, and phthalates, which are commonly used in manicures, have also been found.
Shen Yi remembered some details of the women who were summoned. Among them, Jiang Ge's unusually beautiful hands and manicures on her fingernails aroused Shen Yi's suspicion. Du Cheng and Shen Yi went to visit Jiang Ge together. Du Cheng obtained evidence of Liang Yi's alibi during her death from Singer Jiang - a 24-hour surveillance video. Shen Yi found clues in the light of the surveillance video and determined that the video was fake. Jiang Ge was brought back to the police station with a subpoena.
The police found a piece of fingernail from Jiang Ge’s residence, and the test results were immediately sent to Du Cheng. Du Cheng persuaded Jiang Ge to tell the truth, but Jiang Ge had no way to deny it but to explain it. Jiang Ge, who is engaged in architectural design, was discriminated against because of her identity as a woman. In order to change the status quo, Jiang Ge asked Liang Yi to perform cosmetic surgery for herself. After plastic surgery, Jiang Ge's career has been singing all the way. She also personally designed the secret room for Liang Yi, and Liang Yi took Jiang's fans J in the secret room. After Jiang Ge woke up, he was in pain, but he was helpless to Liang Yi. The two maintained an abnormal relationship between men and women for a period of time. Jiang Ge wanted to get rid of Liang Yi completely. Jiang Ge discovered that Liang Yi had a hand fetish, so she hid the poison in her fingernails. Liu Lianming helped Jiang Ge replace the video outside the plastic surgery hospital, and helped Jiang Ge to forge a video to prove her absence. In order to avoid future troubles, Jiang Ge hid the poison in his fingernails, and quietly put the poison while Liu Lianming was drinking. In Liu Lianming's wine glass.