In the hall on the first floor, everyone did not hear the sound of the upstairs, but one person in the crowd secretly glanced upstairs, and no one noticed the person's actions.

Everyone focused on Mr. Jin, and after Mr. Jin finished telling the first half of the case, everyone present was shocked.

"It's an unanswered case, isn't it?" Huang Quan said.

"I don't think so, there is a truth in all cases, and the truth of this case is in Xiao Ai, right?" Xu Tian asked Teacher Jin.

"It can also be said that the case of the Netherworld Bride sounds a little beyond people's imagination and a bit out of reality, but that case did happen, and the person who handled that case was Lao Chen. You already know the facts of the previous case, right? Dr. Lin also talked about it when he was in the Chen family's ancient house, and in the end, the police had to list the case as an unsolved case. Teacher Jin said.

"What about the later episodes? What happened while the police were in a trance? Xu Tian asked.

"That's a very good question, and just when the police were scratching their heads, a guy showed up." Teacher Jin said.

"Isn't it the detective you mentioned earlier? What's the name? Xu Tian asked.

"Since you forgot, I won't say it, I'm going to keep it a secret for that detective, and you don't have to ask about it." Teacher Jin said.

"In that case, let's just listen to the case!" Xu Tian said.

"After the detective got the case file, he immediately listed the suspicions of the Netherworld Bride case, the focus was on the people in that mountain village, the detective didn't believe that all the people in that mountain village were killed, and the five surviving minors were also suspicious." Teacher Jin said.

"Last time, when you talked about those five minors, you almost mentioned them in one sentence, so I analyzed that those five people did not exist, or Teacher Jin didn't tell the truth last time." Xu Tian said.

"It's true that five people survived in the town hospital, but not the five minors, but unfortunately, when the detective took over the case, those five people had already died." Teacher Jin said.

"Isn't that death without proof?" Xu Tian asked.

"Lao Chen's self-report on the case file also thinks so, but the detective still went to the suburbs of Yanbei to investigate, and the person who traveled with the detective at that time was Xiao Ai." Teacher Jin said.

"Xiao Ai? How could Xiao Ai suddenly get involved with the case? Xu Tian said he was very puzzled.

"Do you remember the truck driver who died violently at his home in Dong'an City?" Teacher Jin asked.

"What happened to the truck driver? Could it be that the truck driver has something to do with Xiao Ai? Xu Tian asked puzzled.

"After the truck driver died violently, the police found the fingerprints of a dancer in his home, and the dancer was cleared of murder after being investigated, but the dancer died three months later, which is a later story, and the dancer is related to this case, but her death is not related to this case." Teacher Jin said.

"The police also found traces of Xiao Ai at the truck driver's home, right?" Xu Tian asked.

"Taste, to be exact." Teacher Jin said.

"The taste? How do you say that? Xu Tian said he was puzzled.

"Police dogs are one of the means used to solve cases, but under normal circumstances, police dogs are more valuable when tracking fugitives, but that case was really a headache for the police, so Lao Chen used police dogs." Teacher Jin said.

"Could it be that the police dog has found Xiao Ai?" Xu Tian asked.

"In the search of the police dogs, the first thing to be found is not Xiao Ai, but a shelter, a place for those who are homeless, runaway, or lost, children, the elderly, mentally ill or mentally disabled." Teacher Jin said.

"The shelter isn't far from the train driver's home, right?" Xu Tian asked.

In order to ensure rigor, Lao Chen used five search and rescue dogs, and the result was the same, each police dog took Lao Chen to the detention center. The police quickly investigated the detention center, mainly for teenagers and adults with independent ability, after elimination, only Xiao Ai met the subject of investigation on the day of the truck driver's death, and there were three people who entered the detention center that day, in addition to Xiao Ai, there was also an elderly person who lost his autonomy, and a disabled person with a broken leg. The identity of the old man has been verified, and there is also a certificate issued by the hospital, and the disabled person has also been sent back to his hometown, so only Xiao Ai is eligible for investigation. Teacher Jin said.

"What about the results of the investigation?" Xu Tian asked.

"The reason why Xiao Ai entered the detention center was that she was not an adult wandering outside, and it was Xiao Ai who walked into the detention center by herself, but Xiao Ai failed to provide valid identity information, so the police took a photo of Xiao Ai for archiving, and it was precisely because of this that I saw the photo in the case file." Teacher Jin said.

"But Xiao Ai didn't use the name Xiao Ai to register in the detention center, right? So you're not sure if that person is Xiao Ai, right? Xu Tian asked.

"That's right, that's it, the time when that case happened was about 2011, and the photo was not very clear, because it was a copy of the police, but the girl in the photo and Xiao Ai are very similar, especially the eyes, as a police officer, I have judgment, there are many times when the wanted warrant or portrait is a little different from the suspect, I have taken a course to distinguish faces, so I can confirm that Xiao Ai is the girl in the photo." Teacher Jin said.

"What does Xiao Ai have to do with the case?" Xu Tian asked.

"After cross-examination, Xiao Ai admitted that she did enter the truck driver's house that day, but according to the records in the case file, Xiao Ai entered the truck driver's house in order to track down a victim." Teacher Jin said.

"What's going on here?" Xu Tian asked.

"The matter also started three weeks before the investigation to Xiao Ai, and the case file records that Xiao Ai works part-time in a person's house, and usually goes to his house to feed the cat when the person is at work. But the man died at home three weeks ago, and the cause of death was the same as that of the truck driver, which was a cardiac arrest. Teacher Jin said.

"That Xiao Ai went to the truck driver's home on the day he died, and the truck driver was not dead at that time, what did Xiao Ai do when he went to his house?" Xu Tian asked.

"Because the truck driver has been to the suburbs of Yanbei, and Xiao Ai's employer has just returned from the suburbs of Yanbei and died at home." Teacher Jin said.