In order to protect the privacy of guests, the plastic surgery hospital did not install video surveillance. The police found a photo of a woman entering and leaving the plastic surgery hospital during Liang Yi's death from the video recorded by the camera outside the building. It's a pity that women are wrapped too tightly and look down on their looks. Shen Yi wants to use this painting to draw a portrait. Shen Yi asked policewoman Li Han to be a model. Du Cheng felt that he was wasting his time. Shen Yi asked Du Cheng if he could use this office if he painted a portrait. Du Cheng hesitated.

Liang Yi, the owner and doctor of the plastic surgery hospital, died on the fifth floor of the plastic surgery hospital. This report was made by his secretary. According to the Secretary, the first to fourth floors of this building are plastic surgery hospitals, and the fifth floor is Liang Yi's private space. There is only one elevator in the building, and no one has the right to take the elevator to the fifth floor except himself and Liang Yi. According to the autopsy, the forensic doctor estimated the time of Liang Yi's death, and the cause of death was cyanide poisoning. According to the structure of the house, Shen Yi found that the space on the fifth floor was wrong. Finally, Shen Yi found a secret room through a painting, and a large number of indecent videos were kept in the secret room.