Episode 18

After He Rongyue checked out the car glass water, he speculated that the person cleaning up the scene might have driven to the Whig Hotel. Shen Yi took advantage of Ducheng's opportunity to get off the car to buy something and stole Ducheng's car glass water.

Du Qing invited Shen Yi to his home for dinner. At the dinner table, Shen Yi raised questions about Du Cheng's recent abnormal state. Du Cheng only said that he was too tired. Shen Yi wanted to press, but was interrupted by Du Qing.Shen Yi asked about Ducheng's watch. Ducheng said that the watch was broken. Shen Yi said that he knew a watch repairman. Du Qing showed Shen Yi the repaired watch. Shen Yi found that the scratch on the watch mirror was missing..

Lu Haizhou asked Li Han, Lao Yan and Jiang Feng about Du Cheng's character traits. When talking about the murder that occurred due to human trafficking, Lu Haizhou pointedly said that the murderer was always one step ahead of the police.Lu Haizhou visited Shen Yi's office and tried to learn about Ducheng from Shen Yi. Shen Yi suggested that Lu Haizhou communicate with Ducheng directly.Lu Haizhou asked Shen Yi if he had any clues. Shen Yi recalled all the events in Ducheng but did not tell Lu Haizhou.

Du Cheng went to the beach house alone late at night to investigate, where M lived before his death.M's diary has been torn up, and Du Cheng used a pencil to make rubbings on the last page of the diary.The document M sent to Du Cheng on the night of the incident was a photo, and he told Du Cheng that the man in the photo was the murderer of Lei Yifei. Du Cheng left the photo in the house before leaving.

Shen Yi looked at M's belongings and found a lot of salt stains. He suspected that M had stayed at the beach during his lifetime.Shen Yi didn't want to alarm others and wanted to go to the beach to investigate alone. After learning about it, Lu Haizhou wanted to transfer the criminal police of the city bureau. Du Cheng decided to immediately send someone to act with Shen Yi.Shen Yi, who was with Ducheng during the search, secretly checked Ducheng's driving records, but the driving records had already been deleted by Ducheng. After Ducheng returned to the car, he discovered Shen Yi's actions, but did not reveal anything about them.

Everyone found the beach house based on the clues given by the grocery store, and the photos left by Du Cheng became the most important clue.After investigation, it was learned that the man in the photo was named Zhou Jun, and Du Cheng decided to arrest Zhou Jun immediately.Privately, Lu Haizhou bluntly said that Du Cheng's decision was too hasty. After all, Zhou Jun had alibi when the crime occurred. Shen Yi did not agree with Lu Haizhou's idea.

Zhou Jun, who worked in the library, was taken to the police station, but after more than ten hours of interrogation, Zhou Jun did not provide any valuable clues.Du Cheng personally went into battle to question Zhou Jun whether he killed Lei Yifei, but Zhou Jun, who was in a daze, remained silent.Seeing that the detention time was about to arrive, Ducheng collapsed emotionally, and Jiang Feng pulled Ducheng out of the interrogation room.Lu Haizhou asked Du Cheng how he knew that Zhou Jun was the murderer of Lei Yifei. Du Cheng said that he was just deceiving Zhou Jun.Du Cheng personally sent Zhou Jun back to the library, and Zhou Jun took him to the bathroom under surveillance.

Li Han discovered a blurry figure on the surveillance camera of the Whig Hotel. Lu Haizhou wanted to ask the technicians of Tongcheng Group to help restore the clarity of the image. Shen Yi proposed to draw a portrait of the figure.After carefully observing the video screenshots, Shen Yi began to draw portraits, but only half of each portrait was drawn. Shen Yi looked at the portraits with extremely unstable emotions. In the end, he drew a complete portrait, and the people in the portrait wereThe person is actually Ducheng.

Jiang Feng asked Shen Yi for a portrait early in the morning, but Shen Yi was not in the office.Jiang Feng was very surprised when he saw the portrait of Ducheng on the drawing board. At this time, Ducheng and Shen Yi were together.Shen Yi pressed Ducheng to question him, and Ducheng started talking about it from the night of the incident.

On the night of the incident, M asked Du Cheng to meet on the fifth floor of the Whig Hotel. But as soon as Du Cheng reached the second floor, M fell from a height, and Du Cheng saw the murderer.M had told Ducheng that someone was hunting her before her death, and her purpose in seeking Ducheng's cooperation was also to seek Ducheng's protection.Ducheng realized that there was a powerful behind-the-scenes manipulator in the whole thing, so he tried to use himself as bait to induce the behind-the-scenes manipulator to show up.

Du Cheng didn't want Shen Yi to be involved, because Shen Yi was his bottom line and his only chance to catch the real culprit.