Liang Zhaoxi took Liu Dahua away as the murderer. Diana was very anxious, and immediately went to find Meng Hansen to rescue Liu Dahua. In order for Monhansen to help her, Diana had to explain to Monhansen that she had known Liu Dahua since she was a child. Only then did Monhansen know that Diana had bought such an expensive robot for Liu Dahua.
Meng Hansen went to find information about Liang Zhaoxi's murder in the Feiyang Building. He just met the witness Rourou who Liang Zhaoxi had found, and realized that Liang Zhaoxi had caught the wrong person, so he asked Liang Zhaoxi to release Liu Dahua immediately. After Liu Dahua was released, Diana immediately went to Liu Dahua, explaining that six people on Huang Ji'an's contact list were dead, and four of them were orphans. She worried that Liu Dahua was also the target of the murderer.
Diana was afraid that Liu Dahua would be hurt, and she didn't want her irreparable injury again, so she came to Liu Dahua nervously to remind him to be careful, but Liu Dahua didn't care about Diana's care at all. Liu Dahua didn't appreciate it, Diana could only focus on solving the case, and especially explained to her colleagues during the meeting, and could not ignore the clue of orphans.
Jin Ye and Zhong Shao ran into Yingying on the road, just as Yingying was repairing an old bicycle, they got out of the car to help Yingying. Jin Ye likes Yingying who is self-sufficient, and when he learns that the bicycle Yingying is going to repair was left by her father, he personally helps Yingying repair it. After repairing the bicycle, Yingying wants to invite Jin Ye to eat, so Jin Ye puts away his next important things and goes to Ying Ying to eat.
The unsolved case team has made new progress. Fang Xiaoqiao discovered the two victims who are not orphans have in common, that is, they are survivors after the accident. Just when Ma Qifan was about to leave work, she told Ma Qifan about the new development. After Ma Qifan left, he found that he had forgotten his mobile phone and could only get it back to the office. He didn't expect to see Fang Xiaoqiao installing the water from the drinking fountain. Fang Xiaoqiao couldn't let Ma Qifan know that she was stealing water from the police station to take advantage, so she treated her new discovery as being discovered by Ma Qifan, and asked Ma Qifan to keep her secret.
Meng Hansen and Liang Zhaoxi went to Wei Zhanchao to grab the case together. Wei Zhanchao really didn't know how to divide the case, so they had to use the efficiency of solving the case to determine the ownership of the case. With new developments in the case, Monhansen and Diana both believed that the murderer may have psychological problems, so they wanted to find a psychologist to analyze the murderer's mentality. Zhudi is an expert in psychology. Monhansen and Dai Yanna both asked her for her opinion, but she didn't understand the guilt of the survivors, so she could only recommend experts in this area she knew to them.
Diana went to see the doctor with Mon Hansen. After asking about the guilt of the survivors, she began to worry that Liu Dahua would self-destruct, so she went to Liu Dahua anxiously. Diana only found Wu Danji but not Liu Dahua, but Wu Danji said that Liu Dahua was going to kill people, which made Diana even more worried. Diana ran to rescue Liu Dahua in a hurry. When she saw Liu Dahua threatening the other side, she almost died together. Diana could only go and rescue Liu Dahua immediately.
Zhudi asked Wei Zhanchao to take tonics every day without letting Wei Zhanchao touch him. Wei Zhanchao was very distressed and could only go out to drink with Meng Hansen. Mon Hansen found a woman in the bar, ready to go to celebrate the Spring Festival evening, Wei Zhanchao was still laughed at by Mon Hansen, he was angry for a while and deliberately said in front of the woman that Mon Hansen has millennia, scaring the woman away Up. Because of Wei Zhanchao's jealous behavior, Meng Hansen thought that the murderer's psychology might be because of his dissatisfaction, and he asked the doctor for advice.
After consulting the doctor, Mon Hansen watched the video of the survivor's counseling class and found that Liu Dahua had gone to the counseling class with Huang Ji'an, and there had been conflicts, so he suspected that Liu Dahua was the murderer. Liu Dahua was once a subordinate of Mon Hansen. Mon Hansen believes that Liu Dahua has a tendency to self-destruct, and nothing has changed since then, so he is very sure that Liu Dahua is the murderer. Diana didn't believe Mon Hansen's inference, but so much evidence pointed to Liu Dahua, which made her hesitate.