Profiler 4: Criminal Investigation Team

Jiao Yang went on to say: "But now I think, in this relatively large town in Chongming District, even if the four deceased did not know each other, maybe their relatives, friends and elders knew the murderer, or they had some kind of relationship with the murderer. There may be a common connection. Therefore, we will investigate the social relations of several victims again later to see if there is anything found among their relatives, friends or acquaintances."

After the meeting ended, although the video conference found the main direction of attack, Jiao Yang still couldn't relax, because he knew that the biggest problem now is that there is no key evidence. Even if you find the suspect, you can't confirm who is the real culprit.

But the crime scenes in the past are no longer useful.Jiao Yang could only take Yu Xiaoguang and Hou Xiyong to bring out all the evidence at that time, wanting to see if he could find the evidence left behind.

Actually speaking, the four victims back then really left a lot of evidence.Such as wallets, school bags, clothes and so on.But after Zhang Guangchao was arrested, most of the belongings of the three victims were returned to the families of the victims as relics because no evidence of the murderer was found on them.

Only in the fourth case, the evidence left by Li Miaomiao at the scene was not taken away.Because of the special relationship between Li Miaomiao's mother and Zhang Guangchao, after being exposed by the media, Li Miaomiao's parents divorced.Her father Li Chunyang went away, and her mother Chen Cailing did not take away her belongings because she did not believe that Zhang Guangchao was the murderer. These things have been kept in the Chongming District Bureau.

Jiao Yang took Hou Xiyong and Yu Xiaoguang to try to find the family members of the other three deceased.Then it was discovered that one of the victim's family members had moved out of the original address and was temporarily missing.

Jiao Yang sent their information back to the Municipal Bureau, asking Ke Luoluo, Yang Wei and others to help with the investigation while continuing to search for the families of the other two victims.

After such a tragic incident, the family members of the other two victims also moved, but they have not yet moved out of the local area.

At first, the two families were resistant and did not want to be questioned by the police. Later, a victim's mother heard that Zhang Guangchao might not be the real murderer, so she rushed to the door.After Jiao Yang inquired about the situation, he learned that because he was afraid of hurting the scene, when he cremated the child, he burned some of his belongings together.

The four victims back then were all teenagers, but 20 years later, they should be middle-aged, and their parents are already in their 60s, dying old people.

After hearing Jiao Yang's explanation of some doubtful points in the case, the old lady felt that she might have sabotaged and found a chance to kill her daughter's real culprit. She felt regretful and couldn't help crying bitterly.

Both Hou Xiyong and Yu Xiaoguang were not good at this, and it was two female policemen from the local district bureau who came out to help persuade the old lady away.

Seeing this elderly mother in tears, Jiao Yang felt extremely uncomfortable.

Jiao Yang thought for a while and said, "In this case, let's visit the schools of the victims. The murderer was cautious, and he might have stepped on the spot in advance, and others had discovered the abnormality."

They were the first to arrive at the school of the last victim, Li Miaomiao, which was still there at that time.But most of the teachers have retired, and the person who came to accept their inquiries was actually a middle-aged man in his 40s.

The teacher of the administrative department who received them introduced: "Two police officers, this is Li Miaomiao's geography teacher Guan Ruijun."

Jiao Yang stepped forward to shake hands and said, "Teacher Guan."

Guan Ruijun nodded politely and said, "Hello, two police officers. If you have anything you want to know, we will try our best to cooperate. But after many years, I really don't remember much about the students."

Jiao Yang said: "It's nothing, I just want to know if there was anything wrong with Li Miaomiao before he was killed. For example, the sudden drop in grades, the emotional troubles of boys and girls, being isolated by classmates is bullying here, did anyone follow him etc."

Guan Ruijun pondered and said: "Officer, to be honest, there should be none of these situations. You may wonder why I remember it so clearly. Because 20 years ago, the police comrades from the branch station came to investigate. I may not be able to think of specific terms. Get up, but the questions they asked roughly meant the same thing.

At that time, the police didn't just ask me, but first asked the leaders of our school, then the head teacher of the classmates, several teachers of the main course, and then we, the teachers of the first class.

In my impression, student Li Miaomiao should be a relatively ordinary, or very unremarkable student.Her family background is average, her academic performance is average, and her appearance is also average. Teachers and classmates don't pay much attention to her.She usually looks like a loner and doesn't communicate with her classmates very much.If the police hadn't come to investigate these things at that time, I really wouldn't have left an impression on this student.

Unfortunately, she was killed. After all, she was a student in our school, and everyone was very active in trying to find her murderer.Unfortunately, no clues were found. "

"Mr. Guan, thank you for your cooperation."

Jiao Yang got up and said, "If you think of any clues, you can contact us at any time."

They went to the two schools attended by the other three victims and found nothing new.

The case seemed to be at an impasse again. At this time, after the news spread that Zhang Guangchao might not be the real murderer, another victim's parents rushed to the District Bureau with the relics they brought back.

Jiao Yang, Hou Xiyong, and Yu Xiaoguang carefully looked at everything in the victim's schoolbag, especially the outside of the schoolbag. They touched almost millimeter by millimeter, but still found nothing.

Of course, Jiao Yang knew that this was normal, after all, their seniors were not just for nothing.But normal is normal, this still can't solve the case.

Hou Xiyong looked helplessly at the victim's schoolbag strap and said worryingly: "You said that if the manufacturer didn't do it seriously back then, leaving some needles and forks, it would be great to prick the murderer with some blood. Don't worry?!"

Jiao Yang looked at the beautiful schoolbag that seemed to be quite new, shook his head and said, "Don't dream, hurry up and check the evidence left by Li Miaomiao!"

The reason why Jiao Yang saved the evidence at the scene of Li Miaomiao's murder to the end is because the police found Zhang Guangchao's fingerprints on Li Miaomiao's water bottle. In theory, the evidence left by Li Miaomiao should be the most sufficient to be searched.

Of course, at this time, you still have to check it carefully as if you have never seen it before.

Li Miaomiao had the most things left behind, because her schoolbag contained all the textbooks she needed, as well as various notebooks, pencil cases, and stationery inside.Hou Xiyong and Yu Xiaoguang carefully turned every page of the book, hoping to see something like blood spots on it.But as those books dwindled, so did hope, they felt.

While flipping through Li Miaomiao's schoolbag, Jiao Yang was a little distracted. Could it be that this time, he will really lose to the evidence again...

Jiao Yang suddenly felt as if something had pricked his hand.

He raised his head subconsciously, but found nothing.Jiao Yang moved the schoolbag to the bright place on the window sill, and saw that there seemed to be a small bear clip hidden in the decorative belt under Li Miaomiao's schoolbag.

Jiao Yang carefully took out the small clip, and this clip seemed to be made of metal, which was extremely corroded.

Jiao Yang's eyes lit up, he put the clip in front of his nose unconsciously, and smelled it carefully, it seemed to be the smell of rust, nothing else.

After 20 years, it has been coated with a thin layer of aluminum powder. It is normal for ordinary metal iron to rust, but Jiao Yang just feels that there is something strange.

He carefully pointed the clip at the light in the room, patted Hou Xiyong on the shoulder and said, "Monkey, what did you just say? If this clip pierces the murderer's hand, we will be prosperous!"

Hou Xiyong was taken aback for a moment, then jumped up immediately, "Boss, are you serious?!"

Jiao Yang said: "I don't know, let's test it!"

But Hou Xiyong stepped in front of Jiao Yang and said, "Wait a minute, boss, where are we going to inspect? Do you think the city bureau should rest assured?!"

Jiao Yang looked at him and said, "You mean that neither side is at ease, right?"

Hou Xiyong sucked his teeth and said: "Be careful sailing for thousands of years, you really want to poke a hole in the sky, my buddies will accompany you, and I will take it back to our bureau and ask Benchun to test it for you. Don't poke a hole, Tell people to beat me with a sap for nothing..."

Jiao Yang said sternly: "It's fine to test here. The three of us, six eyes are on others for testing. I don't believe that anyone can make troubles under my nose. I don't believe it either. Among my colleagues, there are people who are stalking and vain. The real villain. I don’t even believe that my leader is a scum who deliberately disregards human life just for his own selfishness!"

Yu Xiaoguang's eyes turned red, Hou Xiyong paused, stretched out his fist and touched Jiao Yang, "Boss, I'm not as bright and firm as you in my heart, I only believe in you, and I will go with you for the rest of my life!"

Yu Xiaoguang sniffed and said, "Me too!"

Jiao Yang and the three of them took the clip to the Physical Evidence Department, and the trace inspection carefully tried it beside it, and the clip showed a blood reaction, and the three of them immediately became excited.