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 had plastic surgeries done by Liang Yi. Some of them were fascinated, and some were willing to do so.Five of these video discs are missing. Bureau Zhang feels that if the women recorded on these five discs are found, one of them may be the murderer.Du Cheng asked Liang Yi's secretary to match the screenshots of the indecent video with their photos before plastic surgery. The secretary had only taken on some patients, but she remembered a girl named Ai Wen who had a grudge against Liang Yi because of a failed plastic surgery..

Shen Yi once mentioned that the woman in the surveillance video outside the plastic surgery hospital might have failed in plastic surgery, so Du Cheng quickly took Jiang Feng to find Ai Wen.Ivan's mother gave the two a phone call. After Du Cheng found Ivan, he found that Ivan, who had failed in plastic surgery, was already unconscious and now she has been living in a mental hospital.

The clues were interrupted, and Du Cheng asked Director Zhang to report the case. The top priority was to identify the people after plastic surgery and those before plastic surgery. Shen Yi was confident of completing this task. He wanted to draw all the women based on the indecent video footage after plastic surgery.Before the 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 approve his use of Lei Yifei's office, and Du Cheng asked Shen Yi to concentrate on his work.Shen Yi posted portraits all over the office. Du Cheng compared the cases of plastic surgery women based on the portraits, and then summoned them one by one.

The women summoned behaved differently, but all had alibi. Only one woman named Fan Ruoxuan has not yet come.It was dark at night, and Fan Ruoxuan came to the police station. When she took off her mask, everyone discovered that she was almost exactly the same as the woman who appeared outside the plastic surgery hospital, and the portrait drawn by Shen Yi.Fan Ruoxuan revealed that she was obsessed with Liang Yi and then failed in plastic surgery. Lao Yan repeatedly interrogated her whether she killed Liang Yi, but Fan Ruoxuan confessed that the time when she went to the plastic surgery hospital did not match the time of Liang Yi's death. Liang Yi died.That night, she was locked up in the police station for drunk driving.Shen Yi, who observed the suspect outside every interrogation, felt that Fan Ruoxuan was not lying. After Du Cheng's investigation, he found that this was indeed the case.

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 surveillance 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. However, no cyanide was found in the wine glass at the scene of Liang Yi's death, and cyanide was not only found in Liu Lianming's wine.chemicals, and phthalates, commonly used in manicures, were also discovered.

Shen Yi recalled some details of the woman who was summoned. Among them, Jiang Ge's unusually beautiful hands and the manicure on her fingernails aroused Shen Yi's suspicion. Du Cheng went to visit Jiang Ge with Shen Yi.Du Cheng obtained Liang Yi's alibi from Jiang Singer during her death - a 24-hour surveillance video. Shen Yi found clues from the light in the surveillance video and concluded that the video was forged. Du ChengJiang Ge was brought back to the police station with a summons.

The police found a piece of nail from Jiang Ge's residence, and the test results were immediately sent to Ducheng. Ducheng persuaded Jiang Ge to tell the truth, but Jiang Ge had no way to deny it but to confess.Jiang Ge, who is engaged in architectural design, suffered professional discrimination because of her identity as a woman. In order to change the status quo, Jiang Ge asked Liang Yi to perform plastic surgery on herself.After plastic surgery, Jiang Ge's career was booming. She also personally designed the secret room for Liang Yi, and Liang Yi raped Jiang Ge in the secret room.After Jiang Ge woke up, he was in pain but could do nothing about 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 fetish for hands, so she hid the poison in her nails.Liu Lianming helped Jiang Ge replace the video outside the plastic surgery hospital, and also helped Jiang Ge forge a video to prove that she was not present. In order to avoid future troubles, Jiang Ge hid poison in his nails and secretly poisoned Liu Lianming while he was drinking.In Liu Lianming’s wine glass.