Chapter 46 Section forty-fifth

That night, in Zhao Tiemin's office, Yang Xuejun told him the results of the second autopsy on Sun Hongyun by Forensic Doctor Chen.In addition, similar wounds were found on the necks of the four earlier autopsy photos.It can be judged that the five victims were indeed attacked by high-voltage electric rods first, and then strangled to death by the murderer.However, there was no similar scar on Xu Tianding's body in the last incident. After Zhao Tiemin listened, he nodded. Yang Xuejun was about to leave. He thought for a while and stopped him: "Go and tell Teacher Yan the result."

"Okay." Yang Xuejun replied. "Also..." Zhao Tiemin hesitated for a moment, stood up, walked up to Yang Xuejun, and approached him, "You secretly arrange someone to follow Teacher Yan, remember, don't let anyone else know about this." "This..." Yang Xuejun thought for a moment, then suddenly opened his eyes wide, "Are you suspecting Teacher Yan as the murderer and trying to test him on purpose?" "Test a fart!" Zhao Tiemin curled his lips and snorted coldly: "What are you thinking! How could Yan Liang be the murderer? He wouldn't dare to kill someone even if he had a hundred guts."

Yang Xuejun lowered his head in embarrassment: "Then...then why did you follow Teacher Yan?" Zhao Tiemin frowned and said, "He said he had already found some clues and would continue to verify them, but he refused to tell me. I want you to send someone to follow him to see where he went and who he met. Take the photo secretly and give it to me. I always feel that this guy has something to say and is hiding something from me. This matter must be kept secret, and no one, especially other people in the city bureau, can know, understand?" Yang Xuejun nodded readily: "No problem. But who is this teacher Yan? If you let him participate in the case, he is not a policeman. I'm afraid...it's not appropriate?"

Zhao Tiemin sighed and sighed: "He turned out to be a policeman, a criminal policeman, the best criminal policeman, but something happened later." Zhao Tiemin looked at Yang Xuejun, this kid has been following him since he became a criminal policeman, and there is no need to treat him with Yan Liang's matter. Concealing it, he said, "He used to be a member of the Criminal Investigation Expert Group of the Provincial Public Security Department." "Ah!" Yang Xuejun opened his mouth in surprise. He knew that the criminal investigation expert team of the provincial department was not so easy to get in. Even Zhao Tiemin, who had solved many major cases, was not evaluated. The expert team leader is the director of the provincial department. The Deputy Director of Criminal Investigation, Gao, was already a well-known detective in the province before he became the deputy director. He has solved many sensational cases. Other members include the deputy directors and chief instructors of several major cities in the province , The identities of the members of the expert team not only indicate that they have rich experience in criminal investigation, but also indicate that their police ranks must be high.

Zhao Tiemin continued: "Yan Liang used to be the deputy instructor of the Criminal Investigation Team of the Provincial Department, and also a specially-appointed professor of the Provincial Public Security College. When many leaders of the Provincial Department were still working in the local area, Yan Liang had assisted them in solving cases, so they Yan Liang is highly respected, and he is exceptionally rated as an expert. The backbone of criminal investigations in many units in the province have also listened to Yan Liang's class." Yang Xuejun was puzzled and said, "Then how did he become a math teacher at Zhejiang University?"

Although Yan Liang is now a Ph.D. supervisor and a famous professor, this status is nothing compared to his past positions. "He fell into a case," Zhao Tiemin said slowly, looking out the window, "About five years ago, I think it should be October, there was a new community in the east of the city, and the house was handed over at the beginning of the year, but Due to the capital turnover problem of the real estate company, the boss absconded with the money and was arrested, and the community became an unfinished building. Later, the district government stepped in to deal with the aftermath and arranged for a state-owned enterprise to acquire the real estate company. The main structure of the community was under construction. It was completed before the acquisition, and only some supporting facilities were left. After being acquired, half a year later, in October, the house was officially handed over. But on the day the owners came to inspect the house, they found a rotten house on the roof. A corpse with only bones left. According to the results of the forensic autopsy, this is a male corpse with a large hole in the back of the skull. He was directly knocked to death by a blunt object. He died for three or four months. That is to say, in May and June Dead, because after a summer, the body has been completely decomposed, leaving only bones and a small amount of hardened skin, and there is no evidence or clothing for identification on the body. This is not counted, according to the situation at the time, the top floor of the community The roof is locked with an iron gate. The iron gate is the kind of iron fence, and the distance between the steel bars is very narrow. It can only be extended by the arm, and people cannot pass through. According to the real estate company, the house was unfinished in the first half of the year. The roof was locked when I was in Beijing, and the iron gate was never opened during the greening of the community and other supporting facilities. The key to the iron gate was intact, without any signs of prying. The key has been kept in the office drawer of the real estate company. It is kept by a female supervisor of the company, who has a gentle personality and has just been pregnant, so there is no possibility of criminal suspicion.”

Yang Xuejun frowned and said in doubt: "How is this possible? The iron door is intact, it has never been opened, the key has not been pried, and it is well kept. Even the deceased himself cannot go to the rooftop." Immediately, he brightly said: " I know, the murderer must have used some kind of mechanical device to get the dead body from outside the building to the roof." Zhao Tiemin shook his head and said: "That community is an elevator room, with a total of twenty floors, and there is no way to get it up by machinery." Yang Xuejun pursed his lips and said, "Then I don't understand."

Zhao Tiemin continued: "After a few days of investigation by the District Public Security Bureau, the identity of the deceased was quickly identified. In June, a middle-aged woman in an old community nearby reported a case of disappearance to the police station, saying that her husband was a I didn’t see anyone on weekdays and couldn’t be contacted. According to this clue, the police extracted the DNA from the deceased and compared it with the woman’s son, proving that the deceased was the missing man from the family. The police at the police station passed the woman and her son who was a senior in high school, as well as the surrounding area. Neighbors and acquaintances learned that the family is very poor, but this man is a guy who eats, drinks, prostitutes and gambles. He often does not go home for several days and nights. So his wife didn't call the police until he disappeared for a week and couldn't be contacted."

"However, three months have passed since the case, and how the deceased got onto the rooftop is still unclear. There is no physical evidence. How can this case be solved?" Yang Xuejun said. "On the surface, the rooftop is a closed place where no one can enter. How the deceased appeared on the rooftop is a mystery, so this is a typical impossible crime. And because the deceased was discovered on the day of the community inspection, at that time A lot of people were present, so the case was a big deal for a while, but the District Public Security Bureau investigated for many days, but still had no clues, so the Provincial Public Security Bureau sent Yan Liang to handle the case. Yan Liang is best at all kinds of strange cases, especially This kind of crime is impossible. Soon, he knew that the way the murderer got the deceased to the roof was that he directly used an electric drill to turn out the fixing screws of the iron door embedded in the ground and the wall, that is to say, the whole door It was unloaded, and then the murderer took the deceased to the roof, and when he finally left the roof, the murderer turned all the screws of the iron door back in place."

"It turned out to be this way." Zhao Tiemin continued: "Afterwards, through questioning with the deceased's wife, Yan Liang quickly discovered the illogical part of the other party's statement, and then he found an electric drill in their house, and before he could find out more The evidence convicts the other party, and the wife of the deceased surrendered to the police under pressure. According to her, her husband has been eating, drinking, whoring and gambling for many years. After returning home, he often drinks heavily. , he beat her violently, not only her, but also his son. My son was in the second year of high school in June, and he came home one week, saying that after the final exam, he would go to a summer training class to prepare for the college entrance examination next year, which would cost 500 yuan. Money. The man lost gambling these days. When he heard that his son asked for money, he took his anger out on his son and called him a prodigal son. His wife tried to persuade him and begged him to pay his son’s tuition, but when he was drunk, he began to insult mother and son. , She refused to give a penny. She couldn't bear it anymore, and the years of grievances were about to explode. After her son went to school the next day, she picked up a hammer and beat him to death while the man was not paying attention. Afterwards, she was worried that the murder would be exposed. She was thinking about how to dispose of the dead body. Their family didn’t have a car, and they didn’t dare to wrap the dead body up and take a taxi to run away to dispose of the dead body. She thought of the closed community next door, where no one was usually there, not even a security guard. So The woman moved the man's body to a nearby neighborhood in the middle of the night and dragged it to the roof, hoping that no one would find it within a few months, so that the body would not be recognizable in the future. After a week, she deliberately came to the police station to report the missing man The fake police also deceived her son. After that, she came to the police station from time to time to inquire if anyone had been found, and acted like that. As for the man's temper, the police also confirmed it in the investigation of relatives, friends and neighbors. This guy She is a complete bastard. But after all, the woman killed someone. Although the police in charge of the case are very sympathetic, they can only act according to the law. The only thing they can do is to collect some money for her son who is in the third year of high school, and comfort him to study hard. For that, women appreciate the police."

Yang Xuejun asked suspiciously: "Isn't the case closed like this? What's wrong with Mr. Yan?" Zhao Tiemin glanced at him and said, "Didn't you hear that there is something wrong with the above paragraph?" Yang Xuejun lowered his head in embarrassment: "What's the problem?" "The problem is, how can a middle-aged woman have the strength to transport a grown man's body to the next door, and even move it to the top floor? Well, even if she really has such strength, this is a middle-aged woman with little education. When she moved the corpse to the top floor and saw that the iron door was closed, would she be so clever to turn off every screw on the iron door, take the corpse to the roof, and put the iron door back as it was? The usual possibility is that she just threw the body on the top floor instead of getting it on the roof." "Hmm... that's really unreasonable," Yang Xuejun thought for a while, and frowned, "Could it be that her son helped move the corpse?" Zhao Tiemin nodded: "Actually, the murderer was not her, but her son. Half a month after she was formally arrested, her son came to the police station and surrendered himself, confessing that he was the murderer, and his mother wanted to take the blame for him. The real situation of the case is that the son went home that day to ask for tuition fees. The man was drunk, insulted the mother and the son, and even beat the son. The mother used her body to block the man's fist in order to protect the son. And the son has seen his father's domestic violence since he was a child This time, seeing the man whipping his mother with a belt, he couldn't take it anymore, so he picked up the hammer and hit the man on the head with all his strength. The mother was completely shocked by this blow, but the son felt relieved Afterwards, the son said that he was unfilial and could no longer take care of his mother, so he had to surrender himself to the police station. As he was about to leave, his mother suddenly knelt down behind him and said that he was the only reason he had endured all these years. I look forward to my son's success in the future. If something happens to him, I will not be able to live anymore. Therefore, even if he surrenders, let her come, as long as his son can have a good future. This son studied very hard since he was a child, although the family conditions Poor, but his grades have always been very good. He has always been ranked in the top three in key high schools. If there is no accident, he will definitely be able to go to Peking University and Tsinghua University. He is all his mother's sustenance. He has no choice. He knows that after he surrendered, his mother's life Hope was shattered, and life was even more difficult. In order to protect his mother, he could only think of a way to keep both of them from being caught. Their family didn't have a car, so they couldn't throw the body away, so they had to choose the nearest neighbor to stop work. Community. At night, the mother and son smuggled the corpse to the top floor. When the iron gate leading to the roof was closed, the mother wanted to throw the body on the top floor, but the son felt that it was not safe. , he is a smart man, thinking that if the corpse can be transported to the roof, then the probability of being discovered will be small. He observed the lock and found that it was covered with dust, which means that no one has opened it for a long time. If the lock is smashed directly Well, when the inspectors came up and found out, they would go to the rooftop to investigate. So he ran home, took a cordless electric drill, removed the iron door intact, and moved the body behind a smoke exhaust pipe on the rooftop Even if someone walked up to the roof, it would be difficult to find the dead body on the spot. In this way, after a few months, the mother and son thought it was safe, but when the dead body was found, Yan Liang immediately suspected them directly. Mother In order to protect her son, she told him that she must study hard and try to pass the university entrance examination, and she would take the blame for him. Of course the son refused, but the mother threatened death, so the son had no choice but to agree. He couldn’t extricate himself from the guilt, and finally, half a month later, he couldn’t take it anymore, went to the police station, knelt down in front of the police and confessed his crime.” Yang Xuejun sighed after hearing this. When they handled cases in the past, they also came into contact with some unfortunate families. Just because of a jerk man, the whole family lost hope.He could well understand the psychological choices made by the mother and son at that time, full of helplessness, like struggling in a swamp, trying his best to prevent himself from falling.But this is a murder case, even if the police sympathize with them, there is nothing they can do about what happened to them.It is impossible to release water out of sympathy and let the suspect go. But he thought about it again, and said: "Mr. Yan closed the case with a woman as the murderer back then. What he caught was not the real murderer. It was just a mistake. If other policemen encountered this case, they would also think that the woman was the murderer. No one would." Unexpectedly, the real son of the deceased is the real culprit, but after killing his father, he has not behaved differently. It was just a mistake in Teacher Yan's work. At most, he is not proficient in business, so he doesn't need to take responsibility." Zhao Tiemin sighed heavily, and said: "The problem is that Yan Liang handles cases and never makes mistakes. He knew early on that his son was the murderer." "Ah?" Yang Xuejun opened his mouth wide, "That's... Teacher Yan sympathizes with what happened to this family, doesn't he want to arrest his son?" "It's fine if you don't report the news. The problem is that he gave the prisoner false testimony." "What!" Yang Xuejun's eyes widened. "After the son surrendered himself, other police colleagues checked the original files and discovered that Yan Liang actually went to the school to get the student attendance registration very early. The night of the incident was Sunday. According to theory, Sunday night is for night self-study, and the school registered As a result, my son asked for leave that night, did not come to study at night, and was late the next morning. However, in the records of the original file, the student attendance records provided by the school showed that he had never asked for leave. This is obviously not caused by work mistakes When such a thing happened, my colleagues felt that the situation was not simple, so they hurriedly reported it to their superiors, who immediately launched an investigation, and finally found out that it was Yan Liang who had modified the results and the certificate issued by the school. Moreover, Yan Liang even They also revised the transcripts made by the women at the Public Security Bureau. After comparing the original transcripts with the file records, it was immediately discovered that Yan Liang had revised several contradictory parts of the women’s confessions one by one to make the confessions perfect. A major risk accident. The Provincial Public Security Department was extremely shocked by this. Originally, according to the regulations, Yan Liang would be dealt with seriously, and the possibility of sentencing was not ruled out. However, the leaders of the Provincial Department later considered that criminal families are indeed pitiful. Fortunately, in the end His son turned himself in, which does not affect the outcome of the case, and Yan Liang did it out of sympathy, not for his own personal gain. In addition, he has made remarkable achievements over the years, has made meritorious service many times, and has also trained a group of key criminal investigation personnel. Liang was suspended from his post. Later, Yan Liang voluntarily submitted a resignation report, saying that he was not suitable for police work, so he went to teach in a school." Yang Xuejun kept his mouth shut and did not speak. Zhao Tiemin continued: "Yan Liang told me privately afterwards that he knew that his son was the real culprit a long time ago. He saw his mother take the blame for his son, and he learned a lot about their family. He basically guessed it The son is all the hope of the mother, and the mother and the son have reached an agreement that the mother will take the blame for the son in exchange for the future. Therefore, he decided to go against his professional requirements and help them. Although everything was useless in the end, he said that he has no regrets practices at the time." Yang Xuejun sighed: "No wonder you said he is not suitable to be a policeman." Zhao Tiemin nodded: "Yes, the practical application of his criminal logic is very effective. He is the most rational person, and at the same time, he is also the most emotional person. It is a good thing that he intervened in the investigation of the case this time, but I feel sorry for him. It still feels a bit strange to suddenly be willing to intervene in the case, so I asked you to follow him, I never want to see him repeat the same mistakes again, do you understand what I mean?" Yang Xuejun bit his lip, nodded slowly, and said, "No problem, I will definitely keep an eye on it."