Officer Wu of the 1st Criminal Police Team found the body, reported it to the command center in accordance with the procedures, requested physical evidence and forensic medicine to enter the scene, and requested that patrol police or relevant police officers be dispatched to maintain external order.

Soon, Deputy Director Zhang, Officer Wu and Zuo Luo had a three-way call. Zuo Luo said: "The opinion of the seven groups is that there are still ten days left before the school holiday, if the students and parents learn that the third year of high school was killed at this time, then it will naturally be inferred that the first and second years of high school were also killed, which will definitely cause panic, the school must be closed, and it is very likely that the school will be closed early." However, according to our speculation, we believe that the murderer is still in this school, and in the future, the murderer will still pose a huge threat to teachers and students. ”

Deputy Zhang said: "Officer Wu, Z7 means that a small scale will be sent in to collect evidence, and the body will not be announced to the public for the time being, and only explain to the principal." "Deputy Zhang and Officer Wu are about the same age, and they are not qualified to call Xiao Wu, but Officer Wu does not have the position of deputy captain and captain, so he finally called Officer Wu.

Officer Wu said: "It's not up to me to decide, you can decide." ”

"I'm telling you why I won't send a lot of people there. ”

Officer Wu replied, "Understood." "At present, it is Z7 who is in charge of the case, and the person who found the body is Bai Xue, and the deputy bureau is involved, so there is no need for him to adhere to the standard practice. Every case is different, and it's not a good thing to stick to the rules.

Officer Wu hung up the phone, and Deputy Zhang said: "Zuo Luo, you only have five days, and after deducting today's only four days, it is not to limit your time to solve the case, but because there will be a weekly press conference in the morning in five days." We have to inform the families of the senior high school seniors, and the families of the senior high school students may send some information online, and the relatives of the first and second years of high school ...... So, five days, can only fight for so much. Another thing you have to know is that we are now hiding the public's choice of surname, and if anyone goes missing or dies in these five days, you and I will not be able to escape it. Because it was our perception that led to the tragedy again. Suppose that if we had gone public and the school had closed, there would have been no new victims. Do you know what I mean?" "No risk is to suspend classes and talk about it after school starts, but that's not a responsible thing to do."

"Understood. Zoro replied.

"Can you accept it?" Deputy Zhang means that he can accept the consequences of punishment? It may be a crime of dereliction of duty.

"Yes. Zoro said: "At present, the clues indicate that there is a murderer in the school, if we make it public, we lack the source of the clues and the direction of the investigation, then the next semester will begin, and the teachers and students will also be with the murderer." ”

"It's good to understand...... Do you think it's a serial murder case?" asked Deputy Zhang.

Zoro said: "I can't answer for the time being, I need a forensic doctor and a report from the scene." Su Cheng is biased no, he thinks that if it is a serial killing, why is the body of the third year of high school exposed, but the bodies of the first and second years of high school are nowhere to be found?"

……

A six-member police team entered the school in plainclothes and vaguely stated that it had found the personal belongings of a missing student, and did not say that it had temporarily cordoned off the area near the storage room of the gymnasium's No. 1 passage. The body of the senior in high school is in the basketball hoop, and because most of the female surnames don't like basketball, although the basketball facilities are purchased according to the ratio of the number of people, they rarely use so much. The storage room is not locked, it is full of sports equipment, no one takes inventory, only during physical education class, it is very unlikely that the physical education teacher or physical education teacher will let the students go and get some of the equipment they need.

Blood stains were found at the scene, and the deceased preliminarily judged that he had died with a sharp weapon, which pierced from the back and bottom of his right earlobe, and the piercing was not deep, but the location was critical, and the deceased was killed quickly. Judging from the shape of the blood stains at the scene, the murderer pulled out the murder weapon after the murder and covered the blood splash with a cloth or other objects. The killer moved the body from two meters away into the basketball hoop and then pulled out the murder weapon, and there were only scattered blood stains on the ground, as if there was something covered in the ground. At the bottom of the basket filled with thirty basketballs, there was a large amount of blood, and because the bottom was not transparent and sealed well, there was no blood spilling, which was difficult to find from the outside, after all, most of the basketballs had long since run out of gas, covering the corpse like a leaf.

According to the principal, the most remote place in the school is the gymnasium, and even more remote than the gymnasium is the storage room of the gymnasium, which almost no one will enter unless there is a sports day. The gymnasium is very large, with a 400-meter running track, a football field and a grass field, and more than 2,000 seats, and there are six passages in and out alone, corresponding to six storage rooms. In physical education class, I usually use the track to run, and if it is a basketball class, the physical education teacher's academic affairs office has basketball.

The physical evidence team confirmed that the principal said that the place was dusty, and the cardboard boxes, wooden boxes, barbells, dumbbells, volleyballs, table tennis tables and the like were piled up for a long time and no one had moved. This is also related to City A, where sports equipment must be equipped in proportion to the number of students, and the physical evidence team even found a badminton racket with a production date of seven years ago. Students don't need to, but they have to.

Su Cheng was wearing pajamas and looked at the photos on the computer: "This place is a good place for a tryst, I walked around the school today, and I feel that only the gymnasium is most likely to hide secrets." How's the security section?"

"The gymnasium belongs to the patrol security, and the patrol security guards will pass by, go to the high platform at the main entrance to see the situation, and leave if there is nothing to do. ”

There is a soccer field in the stadium track, but let the young girls roll in the grass and dirt, they don't do it, soccer is worse than basketball. In addition, women's football has no future at all, although domestic women's football ranks high in the world, but the income of non-national team league players is lower than that of ordinary white-collar workers, let alone compared with men's football. In one game, the women's football team shot at home and shot through the goal with one kick...... Anyone who has the ability to think independently will think about why they can shoot through the net, and how bad it takes to shoot through the net? Playing football, not Zwilling people. Compared with the men's football team, the No. 3 goalkeeper of the bad team has more than one million dollars a year plus the product income given by sponsors. Why is there such a big gap? To sum it simply, there is a scientist living in the brains of fans, and his name is Watt.

Su Cheng said: "Judging from the scene, it seems to be close to agitating the 'move' crime, the two of them met and killed people. The victim was attacked from behind, and the murderer was very close to the victim, the victim believed the murderer, and an acquaintance committed the crime. ”

Zoro said: "The strange thing is that the murderer brought a murder weapon. "There were no sharp weapons on site.

Su Cheng: "The time of disappearance in the third year of high school is the end of school at 11:20, and the first class is at 2:40 in the afternoon. At this time, she went to the gymnasium storage room...... According to her classmate's testimony, during the morning recess, she also said that she heard yesterday that there were braised pork ribs at noon today. The social software, communication logs, and text messages on the mobile phone did not find that it received any information during this period. ”

Zoro said: "The murderer had direct contact with her. The pantry is their old place, and a glance or a few words can tell them. So it should be teachers and students, and it is unlikely to be employees. ”

Su Cheng said: "I still look at the contradiction, the scene should be an excited killing, the murderer wiped many places, if the murderer is prepared, he will not need to wipe so many places, and he may not even need to wipe it." Why is there a murder weapon? If the death of the senior is related to the second year of high school and the first year of high school, why don't they disappear with them?"

"Not a serial case?"

"I don't think so, but I can't rule out that there is a relationship in between. We can now assume that the senior has a tryst with someone in the storeroom, and if this person has something to do with both the sophomore and the first year of high school, the ability is too great. ”

The medical examiner called: "The time of death can be determined to be around noon on the 12th, the cause of death is bleeding caused by sharp weapons, I just dissected the body and found that she ate an hour before she died, eating a hamburger." ”

"Hamburg?" Zoro asked. It's a closed school, and it doesn't sell burgers, so how did she get a burger?

"Takeaway, teacher. "It's impossible for a student to take takeout, but a teacher can.

Zuo Luo called: "Song Kai, call the main gate of the school from the morning to noon on the 12th to see if there is a hamburger restaurant to deliver food to the school." ”

The physical evidence team and the forensic doctor play a decisive role in many cases, and this scene showed that it was agitation to commit a crime, and agitation will leave a lot of evidence.

At about one o'clock in the morning, Song Kai called: "Boss, it's a meal delivered by the little cute shrimp burger restaurant, nine hamburgers, three chicken cutlets, three fries, six pairs of chicken wings, and three romantic French set meals." The delivery time is the end of the third class in the morning, and according to the monitoring, it is Teacher Zhang Ying who receives the hamburger. Throughout the day, there was only one takeout delivery. ”

Su Cheng clapped his hands: "The case has been solved." ”

Zuo Luo shuddered: "I thought the case had been solved, but could you not say that?"

Su Cheng smiled: "Okay, if you're lucky, the case will be solved." ”

……

Due to the undercover identities of others, at seven o'clock in the morning, Song Kai and the bald head who was seconded to interrogate Zhang Ying. Zhang Ying was detained at home two hours ago.

Zhang Ying's expression was very innocent, Su Cheng was currently sleeping, Zuo Luo was working overtime, he looked at Zhang Ying outside, and felt that Zhang Ying was either an old thief or an innocent person, showing the confusion, confusion and unwillingness of an innocent person who was suddenly arrested. And he was very anxious, and asked the special police behind him many times, why did he arrest me?

Song Kai and the bald head entered, first the procedure, and then entered the topic: "Zhang Ying, how long have you been married?"

"A year. ”

Song Kai: "Do you know the third year of high school?"

"Yes, I'm her physics teacher. ”

Song Kai asked: "Do you only have a teacher-student relationship with your senior year of high school?"

"What do you mean? Is there something else?"

Song Kai got straight to the point: "On the 12th, that is, at noon on the day of the disappearance of the third year of high school, you bought a hamburger, right?"

"I want to think about it...... Yes, that's right. ”

Song Kai took out a model of the Eiffel Tower, looked at the sharp part at the top, and said, "You ordered a special French package, right? ”

Zhang Ying said dissatisfied: "That's right, what's wrong?"

The bald head paused Song Kai, who had no interrogation experience, and asked, "I think you ordered a bit too much, can you finish eating?"

Zhang Ying wanted to answer and asked you to take care of it, but he felt that the hamburger was the focus of the police's questioning, so he didn't engage in-for-tat, and replied: "I lost three set meals, and I don't eat hamburgers myself." ”

"Lose?"

"The 11th is Wang Hai's birthday, our three teachers went to Wang Hai's house as guests, by the way to watch the ball, made a small bet, I am a pair of three, if I win, you can order takeout for three days. If they win, I'm going to buy three takeaways. I lost, and the next day I contacted the burger joint between classes. ”

The bald head said: "In addition to Wang Hai, which other teachers are there?"

"Wang Hai, me, Zhang Yi and Zhao Ti. Zhao Ti is a physical education teacher and is responsible for the physical education teaching of five classes in the second year of high school. Zhang Yingdao: "Several of us are sophomores in high school, we are all young people, about the same age, and we often get together together. I know it's a no-bet, especially since I'm a teacher, but it's not like you're going to be caught here so rudely in the morning. ”

Zoro said to the earphones: "Suspend the trial and bring all the other people." "These people have no criminal records or criminal resumes, so they can't withstand an interrogation, and even if they don't recruit, they can find clues.

……

Wang Hai, Zhang Yi and Zhao Ti were taken to the interrogation room, and Zhou Duan selected Ding Dong's group to assist in the interrogation work.

At the same time, after all-night efforts, the physical evidence team restored the scene, and the evidence provided by the physical evidence team showed that it may not have been a homicide, but an accident. To put it simply, the senior and someone were in the storage room to make trouble, but they forgot the weapon, and the victim leaned back and took the initiative to stab the murder weapon. It is also not excluded that the deceased was assassinated while playing the game.

The physical evidence team extracted possible DNA from the chest of the deceased, and according to the clothes and underwear of the corpse, the chest may contain the saliva of the second person.

Because the interrogation was delayed for an hour, an hour later, all four suspects in the four interrogation rooms signed search warrants requiring them to undergo DNA testing. The DNA test results did not come out so quickly, but the real suspect was greatly psychologically affected.

The bald head yawned and said, "Zhang Ti, it's him, he didn't run." ”

Sure enough, after interrogating a few more questions, Zhang Ti was full of loopholes, and then confessed, Zhang Ti is twenty-seven years old this year, married for more than a year, and has a child. When I was a junior in high school and a freshman year of high school (oh my God, I still have to think about the name.) Once she was injured in physical education class, Zhang Ti carried her to the infirmary, and this hug caused some trouble. What began to increase the eye contact between the two, and when the second year of high school started, they had not seen each other for two months, and the last class in the afternoon was physical education, after school, Zhang Ti took a little expectation to stay in the gymnasium, and slowly went to the storage room, he hoped that something would happen, and he didn't want something to happen. The third year of high school understood this and followed Zhang Ti into the storage room, and the two did not speak, and directly started playing games.

In the next half semester, every week in the physical education class, something similar will happen, one has a wife, the other hopes that this kind of thing will not delay their future, both of them are silent, each takes what he needs. On the morning of the 12th, Zhang Ti got the bet burger package, and he was also distressed about eating the cafeteria every day in the third year of high school, so he went to the corridor of the second year of high school after the fourth class, met with the third year of high school, and made a look, the third year of high school understood, under the pretext of coming to relatives and classmates to separate, the two went to the storage room to eat hamburgers.

The game started after the meal, but this time Hamburg gave away a sharp model of the Eiffel Tower made of hard plastic, which killed the third year of high school. As a physical education teacher, Zhang Ti is very strong, and he picks up the senior high, and the senior leg is crossed around his waist and leans on the equipment, the equipment is black, and the iron tower is also black. When biting his chest, the love was deep and deep, and the high third head suddenly leaned back to the right, and was pierced by the iron tower placed on the side, and soon did not move.

Zhang Ti put the senior on the raincoat pad that he had prepared earlier, and frightened him for a long time before he calmed down, and finally he put the senior in the basketball hoop, covered it with an airless basketball, and pulled up the iron tower. Then take the bloodstained raincoat with it.