Shi Hao only found out the screen name of this contact, but did not find out the specific identity of this contact, but the clues have been traced here, and Mr. Lu is already very clean and good help. locked the suspect's screen name, and the rest was handed over to the police and Mr. Lu for analysis. Rearrange the clues, the suspect often haunts the school bulletin board and near the library, and the selected victims are all students who are at the top of the list, who appeared at school twenty years ago, and the twenty years of this hour have made him experience some kind of stimulation, and the frustration generated makes him hate these victim types, and he uses the strange talk in the school as a cover for his murder behavior after returning to school, and can still commit murder with ease while the school increases security, It shows that the suspect is also very familiar with the school's recent arrangements, and may be familiar with the school's security personnel, and can skillfully avoid the suspicion of others when he finds himself at the scene of the crime, and consign the body to the public area. Based on the above clues, Mr. Lu classified the suspect as a middle-aged man over 45 years old, in good health, and speculated according to the 43-yard shoe prints found at the scene, the suspect's height should be about 1.8 meters, because the murder occurred on a rainy night, according to the depth of the shoe prints, the suspect's weight was about 75 to 80 kilograms, and he had a certain anti-reconnaissance ability, and he knew that he could not leave fingerprints when he strangled the victim, so he used other tools.

After coming up with this profile, Mr. Lu screened the teachers and students in the school again, and he also took out the note that was placed in the pocket of the third victim's jacket.

Mr. Lu's strange attitude towards the note also attracted Li Jing's attention, and he later recalled that her habit of taking a notepad to record details as clues was also developed at that time. The police's technology can be used to infer the brand and model of the printer used in the printing at that time, but there is no printer of this brand in the school, the police searched for the places where the surrounding schools can be copied, and found that no one is using this model of printer, this note is printed from a very old printer, and now it is really difficult to find this model of machine. Mr. Lu analyzed that the note should have been torn by the suspect from his belongings, and this piece of paper may have other items related to the murderer. Therefore, after taking the photos, the Jian yì Xiao team was sent to the real yàn room for a second test to see if there would be any other findings.

On the other hand, with this number three, Li Jing discovered other secrets. He compared the information of the three victims in his hand. Another link was found, and the correlation between them was not as simple and obvious as the number on the report card, but rather did not refer to the ranking of their grades, or the order of death. Rather, it is a period of their transformation. The first victim was a first-year graduate student, the second victim was in his second year of undergrad, and the third victim was in his third year of undergrad. He tried to ask the classmates of the first two victims about their lives, especially if there had been any special changes this year.

At first, there were not many unusual recollections, but one of the first victim's roommates was speechless for a long time. Under questioning, he said that He Wei (the first victim) suddenly made his grades jump to the upper middle level as if he had opened his mind when he was in the first year of graduate school, and everyone thought it was strange at first, because He Wei rarely studied seriously, and if it wasn't for the seven-year enrollment of medical school, he continued to stay in school to study. With his qualifications, many people are worried about whether he will be able to graduate, but judging from the exams before the start of the semester, to some exams and exams a few days ago, He Wei's grades have always been skyrocketing, not soaring, and even more exaggerated is that he has been at a high position since the first exam. Many people are envious of the fact that you can get good grades without revising, but there are also people who doubt that the classes in medical school are learned step by step, and there can be no shortcuts. The roommate who felt that something was wrong privately told Li Jing that he might be out of jealousy, and he had always suspected that He Wei's grades were fraudulent, and he lived in the same dormitory, and He Wei's usual situation was very clear to him. Although it is a bit general to say that grades are a verification of ordinary efforts, He Wei's behavior all the time seems to be constantly breaking their long-standing concepts, but no matter if, it is difficult to get good results if they don't work hard at all. But this is the case with He Wei, who rarely appears in the study room. But he got good results. This is truly incredible.

When asked about the situation of the second victim Li Wei, some classmates had objections to Li Wei's going abroad, Li Wei also changed at the end of the second semester of her freshman year, but the biggest change occurred after the start of school. Ranked first among all applicants that time. But after the exam, Li Wei still went her own way as usual, and did not go in and out of the study room much, and her daily life was still eating, drinking and having fun as usual, just like she herself could get such good results only by talent, which made many students indignant. But there is no way, Li Liwei is indeed a smart child who can get good grades without hard work, and everyone has to be envious, jealous and hateful.

Considering the situation of the victims, Li Jing is even more convinced of his inference that the order in which the suspects jump and who still breaks is related to their own changes. Li Jing didn't immediately tell Mr. Lu about his inference, he went to verify another thing. Li Jing himself is a student of medical school, of course he knows how much effort it takes to get the ideal position among all the elite soldiers in the medical school, if he comes to the medical school and just lives a life of eating and waiting for death, the effort to be at the top is definitely not something ordinary people can imagine. Therefore, Li Jing became more and more suspicious that the type of victim selected by the suspect was not suitable, and their previous speculation was different.

Li Jing contacted Shi Hao privately, and with the good relationship established a long time ago, Li Jing hoped that Shi Hao could privately help find out what happened to the victim in the six months before he was killed. Shi Hao tangled for a while and agreed, I later asked Shi Hao why he agreed to Li Jing so easily, Shi Hao said that he rarely saw why Li Jing was so persistent, just for the sake of a good buddy, so he had the courage to help him.

Li Jing asked Shi Hao to find the people the two victims had been in contact with within a month and a half, and none of these people were people they had been in contact with and lived in the school. He then contacted the school's security team privately to find out if they had been in contact with anyone who wasn't suspicious at the time of the third case. That's right. is not a suspicious person, according to Li Jing's speculation, this person should not make the security personnel suspicious at all, so that he can do whatever he wants in the school, if he is a little suspicious. I will definitely be stopped and interrogated at this critical period.

That night, Li Jing ran to the dormitory of the security team with a few side dishes, and the wind did not rain that night, but the weather was still sunny, because the rain a while ago washed the sky very clean. The strong wind during the day stopped at dusk, and you could see the stars in the sky, and when Li Jing appeared in the security personnel's dormitory, everyone was very nervous, because they knew that he was investigating the case, and thought that they were here to make things difficult for them, after all, there were still homicides during the strengthening of security, and the life of the security team was not easy these days. However, the security captain saw that Li Jing was still a student, so he still invited Li Jing in. Li Jing didn't ask them what strange things happened that night, he knew that these security guards had been tired of asking these questions in the past two days. If there are no clues unearthed after so many inquiries, it means that the direction of their investigation needs to be changed.

Li Jing put the side dishes and a few bottles of beer and a bottle of liquor on the table, he knew that now was not the time to drink, but if he got the clues he wanted first, it was most important to get close to them. Sometimes the details they see but ignore can often take the investigation of the case into a different light. Sure enough, after three cups, the security captain talked more, and he kept scolding why someone would scare the children in the school with childish weird talk. Li Jing knew it was time to find out what he wanted to know, and he began to ask the security captain for details about everything that happened in the second and third cases.

He didn't ask directly. Instead, let the security captain recall what happened little by little by being drunk. Li Jing studied pharmacology, but he has designed courses in psychology, so he knows how to simply hypnotize his subjects and put them in their own memories. He guided the security captain step by step back to the two rainy nights where the crime occurred. He was even asked to recall all his sense of smell and hearing at that time, and finally when he recalled the third case, he recalled that he had heard the sound of glass breaking in the place where the body was found the next day, and when he went over, he found that there was only a bottle of hydrogen peroxide that had been spilled, and he wondered how there could be hydrogen peroxide, and it was in his memory. Hydrogen peroxide should have no taste, but he smelled the pungent smell of disinfectant on his clothes, and then saw a man wearing a white mask and a white coat running over with a broom, saying that he had accidentally knocked over the hydrogen peroxide used by Shi Yàn on the ground just now, and was about to clean it up after going to find a broom. Although he was wearing a mask, he was sure that the other party was a man from his height and weight, as well as his voice. Because it was a special period, he looked at the man's ID, and the ID presented by the man stated that the man was the custodian of the real yàn room in the school, and the security captain at that time also specially took off his eyes and asked the man to take off his mask to confirm his appearance, and found that it was indeed the same man as in the photo, and then he called the real yàn room to confirm whether the person was saving zài, and after getting a positive answer, he left, when the rain was not particularly heavy, and he also told the man to go back earlier after cleaning up.

Li Jing asked the security captain to talk about the height and weight of the man, which was very similar to the result of their previous profile, the security captain was 1.82 meters, and he could look at eye level when talking to that person, and it was speculated that it should be around 1.8 meters, the man was a little strong, and his weight should be about 85 kilograms, the security captain's figure was relatively well-proportioned, and he was still thinking about what the chances of winning a hand-to-hand fight with him were if the man in front of him was a murderer. His voice was a little rough, but the tone was very polite, and a few simple words of conversation could make people feel his polite temperament, even when the security captain repeatedly verified his identity, he was not in a hurry to stand on the side.

Li Jing asked the security captain about when he met this man, and the security captain recalled that it was about 10 o'clock in the evening, which was the time when the last wave of teachers and students left in the school's real room, and if anyone needed to do it, it was basically to live in the real room for a night, especially after the school had a homicide, the school would no longer let students stay in the real room overnight, and basically only the teacher stayed.

Because it was true that Yàn had confirmed the identity of the other party, when the police learned about the situation at the school at that time, when asked if they had encountered any suspicious people, the security captain automatically ignored the situation at that time. After chatting about some other details of the case, it was not much different from what Li Jing had heard about since he was a child and what Teacher Lu had heard, so Li Jing got up and prepared to leave. When he was about to push the door and leave, the security captain asked him if the person was the murderer and whether he had indirectly killed the third victim, and his helpless tone and eyes reminded Li Jing of the poor and inexpressible self when he was a child. He just shook his head at the time and said that no one knew the true identity of that man, and if anyone in such a situation would make the same choice as him, let her not blame herself too much, no one can know who the murderer is, what will happen, the only thing to do is to try to prevent more murders from happening.

The security captain recalled the name of the man he had foreseen at the time, the name was very popular, his name was Wang Qing, and this was the only thing he could still do to help Li Jing now. (To be continued.) )