Through some information left by the forensic doctor to Zi Yuxun, Zi Yuxun at this moment began to make a simple deduction of the occurrence of the case in his own brain, when a person's anger towards the teaching director reaches a certain level, the other party will choose to kidnap to kill.

Because after the kidnapping, the murderer can quietly observe the victim in front of him, if he can kill the other party directly in a corner, it is obvious that the murderer will never do such a strange act, because it will expose his target.

The average murderer chooses a more straightforward method that does not reveal his target or identity, but at the moment, the other party chooses to kidnap obviously because he can't be satisfied with the feeling of being killed with a knife, and he needs to use torture for a longer time to vent his anger.

As far as the current situation is concerned, there has been no impact or blow wound on the other party's head and neck, which proves that the other party should not have fainted after being hit before being kidnapped.

In addition, if you want to kidnap a person, you can directly use a sack, but if this is the case, when you don't have the ability to curb the other party's ability to speak, it is easy to expose your target, and then the kidnapping will become devastated, which is obviously unacceptable.

If the white powder found in the deceased's mouth is really a drug that can make people unconscious, then this inference can be established, if not, then it is necessary to think further about what the method of abduction is.

However, in Zi Yuxun's opinion, what kind of drugs, violent impact and the like are not very reliable, the most reliable thing is drinking, with the help of the narcotic effect of alcohol is a person's ability to give up resistance, and the murderer can temporarily act as a friend called the other party after the other party is drunk.

In this way, even if the murderer put the deceased in a car, it would never attract anyone's attention, and Zi Yuxun's inference was finally confirmed, and after forensic identification, it was found that the white powder was a kind of candy used for chewing.

There was no drug residue found in the composition of this candy that could make the deceased comatose, and in addition, there was indeed alcohol in the blood of the deceased, which gradually confirmed Zi Yuxun's speculation, and after that, they were able to rely on the line of drinking to start an investigation.

But before that, they need to pay attention to whether the deceased is drinking alone or two people drinking together, if it is two people drinking together, then the other person is 50% likely to be the perpetrator, if it is one person drinking, it is difficult to say.

After some investigation by the police at the school, the police can learn that the teaching director actually doesn't drink much on weekdays, except for when he has to talk about some cooperation with other people, he will accompany each other to go out and have some wine, in addition, the teaching director is actually not very popular.

The other party often uses his position as the director of education to scold the students of the school, although the other party is not wrong with the question, but the tone of this speech is really unacceptable, and no one wants to listen to a middle-aged man standing at the door talking nonsense to himself.

Therefore, as far as the current personnel investigation is concerned, if anyone has a motive to kill, it is estimated that the students who have been scolded in the entire school will have a hidden motive for killing, but they do not have the courage to kill, and as for the others who have a motive to kill, further investigation is needed.

At present, after some investigation and understanding of the course of action of the school's dean, they found that during the time when the school director was killed, the dean of education went out for a meeting with the school's principal, and no one knows why he suddenly appeared in this vicinity.

Moreover, perhaps no one in the school thought that in just a few days, the dean of students would suddenly return to school and become a dead man.

Now it is possible to plan three lines of investigation, the first is to send people to investigate who has a bad relationship with the dean, and register all these people, they are likely to be the murderers of the dean, or accomplices.

Second, send someone to inquire about the principal, according to the understanding, the director of education has been in a meeting with the principal during the time he was killed, that is, if the principal of the school should know some of the specific itinerary of the director of education during this time, and meet some people.

Third, go to investigate the surveillance video of the school, since the other party chose to hide the body in this place, it is obvious that the people in the school or deliberately hid the body in the school to create some atmosphere, that is, the other party must be in the school if he wants to do this.

If you want to enter the school, in addition to the wall, there is only the gate and the back door, and the front and rear doors all have surveillance video, as long as the other party enters with the help of two doors, the surveillance video will definitely capture the traces of the other party, of course, it does not rule out the possibility of entering the campus through the wall.

However, the height of the wall of this school is three meters three, and if you want to climb over the wall with the corpse on your back to enter, there is obviously a huge difficulty, of course, it cannot be ruled out that the person who killed the director of the confession is a burly man, as for why it is said that he is carrying the corpse, there is a whole reason.

Because the victim is the school's dean, it is naturally easy to enter the school, and the other party obviously will not choose the possibility of climbing over the wall to enter, so if the other party will agree to enter with the murderer by climbing over the wall, it is obviously in a state of death.

It is also possible that the director of teaching entered the school alone, and the murderer entered the school over the wall, and left after the killing, in short, there are many possibilities, but how to deduce it specifically, it is necessary to further investigate the clues in the school.

At the moment, Zi Yuxun and others chose to check the school's monitoring first, which is the simplest investigation and the fastest way, if the deceased is not found to enter through the gate, then the next investigation of the principal will have a certain symbolism.

After coming to the school's guard room, the doorman saw that the police came to look for him, his face obviously became a lot more ugly, and he frowned in surprise: "I don't know what the police officers are doing here?"