Team leader Wu came to investigate, but the male protagonist did not open the door. Team leader Wu and his team members thought that no one was at home, but they saw the male protagonist's car.The hero's daughter opened the door, and she said she had never been near the crime scene.Her daughter told the police about the incident with Song Minya, saying that she suspected Song Minya had stolen her mobile phone.The male protagonist was listening and believed that his daughter was lying.Park Ji-yeon said that the hero's daughter stole Song Min-ah's mobile phone, and the hero did find a mobile phone in his daughter's schoolbag.

Team leader Wu's team members felt that the male protagonist was more panicked than his daughter. The male protagonist pointed out that his daughter was lying, and the daughter retorted that the male protagonist always did not believe her.The male protagonist had secretly changed the red pendant on his daughter’s schoolbag.Team leader Wu and the hero investigate the hero's daughter's alibi respectively, first investigating the daughter's boyfriend Xiuxian.

The male protagonist asked the teacher to investigate, and the teacher said that his daughter and Xiuxian were both good children.The hotel's surveillance confirmed the hero's daughter's alibi.Team leader Wu accused the male protagonist of concealing it, but he was covered up by the male protagonist.The hero's daughter took a bag of money from the locker and asked the hero to move.Team leader Wu caught the children who had run away from home and investigated.All the children's confessions were basically the same, which made the male protagonist and the team members feel that they were colluding in their confessions.

A girl said that Cui Yingmin's alibi was false, and Cui Yingmin said that he wanted to kill Song Minya.The police went to arrest Cui Yingmin, who was hiding in the landlady's house! The male protagonist suggested that Cui Yingmin had an accomplice; the landlady diverted the attention of the police monitoring her home and helped Cui Yingmin escape! The male protagonist withdrew from the case and planned to move with his daughter.But at this time, someone contacted the male protagonist and said that he had left his phone number and wanted to see the driving recorder.

The male protagonist saw the video in the driving recorder. On the day of the crime, his daughter’s alibi was false! The male protagonist went to question the male student who testified for his daughter, and found that there was a conflict between the words of the teacher and the male student.The male protagonist found the teacher again, and the “Xiuxian” the teacher said was a girl! The male protagonist found the girl Xiuxian’s house, and Xiuxian’s father said he didn’t know what Xiuxian and the male protagonist’s daughter were doing secretly.Cui Yingmin found Park Jiyeon who was hiding and asked Song Minya where the money she stole from him was.

The hero's daughter sent a text message to Cui Yingmin. Cui Yingmin was seen by Li Yuzhen in the subway station and was arrested.The male protagonist refuses to move now. The male protagonist’s daughter frames the male protagonist and reports that the male protagonist has taken bribes. As a result, the male protagonist cannot interrogate Cui Yingmin, and Cui Yingmin is released.The male protagonist took out the red pendant for testing, and it was consistent with the evidence found at the crime scene, and the red pendant had the DNA of the white bone corpse on the mountain at the beginning of episode 1!!! The white bone is the male protagonist’s daughter’s good friend Xiu Xian, right?The master's daughter must be avenging her!The landlady must be the one who calmly handled the situation.