I found Du Tan and Xu Kuan's homeroom teacher, Ms. Liu, and when I asked her questions, her gaze was obviously evasive, and as the conversation deepened, she seemed to be deliberately hiding something from me.

This couldn't help but make me doubt her again.

If she is hiding the truth, then it means that the case is related to her, and if she does not say the main culprit, she must be an accomplice, or she has also been threatened. But in modern society, as long as she knows who the murderer is, our police will definitely catch the murderer, and at the same time, she can also seek protection from the police.

But what about the motive for the killing? During the school period, students will more or less resist and reject the teacher in their hearts, just like every student has a saliva song of "bombing the school" when he is a child.

Will a teacher help a murderer kill his former student? I thought it might be unlikely.

So why did this Teacher Liu deliberately hide some things from me? Could it be that the trigger point of this hatred has something to do with her?

"Mr. Liu, I am thinking about your investigation as a criminal policeman now, and if you don't report it, you will be legally responsible!" I suddenly raised my voice, which frightened Mr. Liu.

Sometimes, if you don't scare her, she won't tell you the truth of the matter. People are like this, they will choose the lesser of two evils in things related to themselves, and it is people's knee-jerk reaction to avoid the important and light.

And we police sometimes need to use "one sings red face and one sings white face", which is also the method that Li Meng and I often use in the course of investigation. It's a pity that only I will investigate it myself today, and if Li Meng is by my side, the effect will be better.

Teacher Liu lowered his head deeply, did not look at me again, and did not speak again.

I cleared my throat and continued: "This is a serial murder case, no one knows how many targets the murderer has, and the murderer is now red-eyed, maybe there will be a possibility of revenge killing." And you, as his homeroom teacher, I'm afraid that when he completely falls into madness, he will come to you. I don't believe that there has not been a single conflict between you teachers and students in the three years, and no matter who is right or wrong in this contradiction, he will definitely remember it vividly. ”

I deliberately made it serious, and I deliberately pulled it on her. But as far as the police are concerned, no one can say where things will go, and it is entirely possible that what I said may happen.

"Tell me everything you know, and I'll keep you safe, and I'll never let anyone know that you told me about it. Witness protection is a must for our police, and you can trust us absolutely in that. ”

Grace and power, as the so-called slap to a sweet date, at this time, I must give her a sense of security.

Sure enough, after listening to me, Teacher Liu slowly raised his head and looked at me with a somewhat evasive look: "I didn't deliberately hide anything, I ...... I...... I just can't believe it. Everyone has lived together for three years, how can they kill people? I still can't believe that the killer must be a classmate in our class. Besides, it's been more than ten years, how can it ...... How to ......"

"For the world, anything is possible. For a murderer, more than a dozen years is not a problem at all. I stared earnestly at her somewhat evasive gaze and said firmly.

Teacher Liu sat across from me, clasped her hands together and kept teasing, she was very hesitant and confused in her heart now.

I knew she had the most likely answer in mind, but she still couldn't accept it because she didn't believe it.

For us police, after all the impossibilities are ruled out, no matter how unbelievable the remaining one is, it is also a fact.

Finally, Mr. Liu struggled inwardly for a while, and then slowly told me a story that happened in the class at that time-

"Comrade policeman, I told you everything I knew, but I still think it's unlikely......

At that time, it was the first half semester, and I had been teaching them for half a year, so I had a deeper understanding of each student. Our school is called Ningzhou No. 1 Experimental Middle School, which is the best junior high school in Ningzhou City, and many students are crowded to come, and at that time the school only accepts children in the school district, and children from other school districts need to spend a fee if they want to come to school here.

This is normal, and the same thing is bound to happen in other cities.

But in this case, it also leads to those students who spend money to come, and their families are relatively wealthy.

Comparison is the nature of human beings engraved in their bones, which is the inferior nature. Everyone compares food, clothing, use, and the house and car at home.

I also often teach them that those things are not theirs, but their parents'. What they really need to compare is learning, because only learning is their own. When everyone grows up, they will make money by their own ability, and then they will have more capital.

The children in junior high school are all adolescents, and they are very difficult to manage, the police fight, dye their hair and do nail art, and they are also punished. They don't know what a deal is at all, they think that a kind of object is a fashion, a trend, and this group of children often imitates the youth idols on TV, what is fighting for girls.

This is called Du Tan, the family conditions are very good, and he is a typical thorn in the class. He is particularly appealing, and the so-called appeal is to buy food and drink for his classmates, so as to win people's hearts. He soon co-opted a small group of eight people in the class, called 'Seven Dragons and One Phoenix', because there was a girl among them.

Du Tan often took them out to fight, and several times they were discovered and stopped by our teacher, although they fought, they never missed class.

Although we are teachers, we also have difficulties, we can't watch them everywhere, we can't put monitors on them. I have to manage a large class of more than 50 people, and I have to take care of every student, and I have to understand all kinds of things in the school, and I can't help it.

When I encounter this kind of problem, I always persuade and educate them, and then contact parents to educate them together, or let them solve them on their own.

This Du Tan has a particularly bad problem, he especially likes to bully honest children, the kind of children who usually don't talk much are bullied by him, if you want to say that he bullied the most ruthlessly, it is a child named Chu Ming. That kid is very honest and timid, and he will come to me every time he is bullied.

I will also criticize Du Tan's education, but I can't do anything about it, I can't watch him every day......."