When Chen Kaiqing's father came to deliver the goods, he revealed his decision to stay in China and assist in the investigation of the case, rather than return to Canada.In this regard, the old father did not blame his daughter, but silently let her leave.Back home, he stood alone on the balcony, recalling the past, and at the same time began to worry about his daughter's safety.

At the same time, after receiving the news, Yang Guangyao quickly went to Mrs. Zhong’s house with Chen Kaiqing to inquire about the situation.However, Mrs. Chung remained calm in the face of the police's visit. She denied knowing the people in the sketch and asked them to stop disturbing her.Yang Guangyao noticed Mrs. Zhong wearing headphones and felt a little strange, but did not take immediate action.Subsequently, they discovered Mai Zhihong's hiding place through aerial photography and took quick action.

In the room, Miss Zhong was pleading with Mak Chi-hung to let her child go, but Mak Chi-hung accused her of what she had done in the past.At this time, Yang Guangyao arrived in time and asked Mai Zhihong to put down the child.As other police officers arrived, Mai Zhihong saw that the situation was not good, abandoned the child and fled in a hurry.Yang Guangyao followed closely, and after a struggle, the police successfully subdued him and took him away.

Afterwards, Yang Guangyao and others found Mrs. Zhong again and tried to get more information about Mai Zhihong from her.Although some clues have been obtained, the situation of the tutor remains a mystery.

In the ward, Yang Guangyao monitored the prisoners eating, and then replaced the cold handcuffs with a dog leash and tied them aside.Mai Zhihong looked nervous and even showed a second personality, preparing to reveal the identity of the tutor, but he soon returned to normal and refused to reveal any information.He began to mock Yang Guangyao and even mentioned that he could not protect his family.

Although the case seems to have been settled, Yang Guangyao still feels that the matter is not simple.He is determined to continue tracing the identity of the tutor.When Dr. Zhou came to visit Mak Chi-hung, he tried to guide him to tell the truth.However, when the test report came out, Yang Guangyao discovered scars on Mai Zhihong's body, which made him even more suspicious of the truth of the case.He quickly found Mai Zhihong's former employer to learn about the situation and learned that Mai Zhihong was renovating the air conditioner at home at the time of the incident.So, he went to the sewer again to check.

During the investigation, Yang Guangyao revealed his suspicions about Forensic Chen to Zhang Tianming.Because of the appearance of forensic doctor Chen, the case went extremely smoothly, and even Mai Zhihong was successfully arrested.They are worried about Chen Kaiqing's safety and are always vigilant.

After returning to the police station, his superiors criticized Yang Guangyao and others for forcing confessions from prisoners.But Yang Guangyao believed that the matter was not simple and decided to continue to investigate in depth.They carefully monitored Mak Chi-hung to prevent the mastermind from attacking him.However, when Chen Kaiqing learned of their investigation, she angrily expressed her intention to help her father clear the suspicion and proactively cared about her parents' safety.However, her message was accidentally read by her father who was having a meal.