Xu Zheng and his family were busy celebrating, but Yan Lao and Fang Hua did not leave the archives. The grandfather and grandson are still studying the information they have just investigated, especially Sun Chuanbin and Liu Bin and their two roommates.

"I always feel that we still have some details missing, the murderer may not only be Sun Chuanbin, there should be adults involved, otherwise I really can't figure out how they carried Song Hao's body. Especially if you want to move the body to the room where Du Meijuan lives, the sixth floor, if you take the stairs, the already stiff body is not as easy to move as a piece of wood. And what does this case say. The crime scene was too clean, and the criminal gang basically did not leave any clues, such as hair, saliva, fingerprints, etc. Listening to his grandfather's analysis, Fang Hua was puzzled,

"It doesn't seem difficult to move a body directly from the window to the sixth floor using a rope or a drone. At one or two o'clock in the morning, there was actually a slight commotion, and the neighbors couldn't hear it at all. Yan Lao hated the iron and criticized it: "You, don't you take the file seriously, didn't Chang Lele say it at the time, as soon as she entered the unit building, she smelled a strange smell, and there is only one possibility that there is a smell on the first floor." The corpse that emitted this smell was moved from the first floor to the sixth floor by stairs. ”

"Since you think there is a problem with the details, why didn't you say it when Brother Xu was here just now?" Yan Lao couldn't cry or laugh,

"Xiao Xu has a happy event today, it is already a great thing to be able to find this direction of investigation, how can I still pull him to study the case all the time. The hardest part of this case is finding the suspect. But I really didn't think about Sun Chuanbin and his little hair. In the final analysis, my grandfather was still guilty of empiricism, believing that people who were not at the scene of the crime were not too old to commit crimes. Fang Hua tilted his little head, his fingers groped his chin, racking his brains to analyze,

"Why did Brother Xu think of this, could it really be that he just thought of Sun Chuanbin when he saw my young age. I don't feel like it's all there. He must have had the same experience as Sun Chuanbin, when he was an adolescent, listening to the couple upstairs every day... Oops, definitely. Otherwise, how could he empathize with Sun Chuanbin. Yan Lao's face was full of black lines at this time, but it was not good to have an in-depth discussion with her in this regard, so he said angrily: "Okay, you can help your grandfather investigate Liu Bin's parents, as well as the parents of several of his classmates in the high school dormitory." The focus is on the father, the more detailed the better. Fang Hua hesitated,

"Grandpa, your police mobile phone was taken back after retirement, and the intranet can't be accessed, how can I help you check?" Yan Lao was helpless and pointed out: "Why are you so stupid, you won't call your Uncle Liu and ask him to help us investigate." ”

"No, it's time to get off work, so let's not disturb him." Fang Hua insisted and made another big move,

"Grandpa and my mom sent me a message saying I want to take you back." When Yan Lao heard this, he reluctantly threw down the file and sighed.

The next day, Xu Zheng finished his work and took Zhu Qing and Pei Tianshi to the archives in advance, at this time Li Mingsheng, the captain of the Serious Crime Brigade of the Beijing City Bureau, and his subordinate Fan Yu were already waiting here.

Fang Hua is not here today. After greeting each other, they sat down and began to study the case. Since Xu Zheng and they had other jobs during the day, Yan Lao asked Li Mingsheng to send Fan Yu to go to Xingbei High School where Sun Chuanbin and Liu Bin were located instead of them.

A private high school. I asked the homeroom teacher of the two of them and other teachers. Not to mention, this time it was lucky, Sun Chuanbin's head teacher had already resigned, but his English teacher was still teaching at the school.

This female teacher even had an impression of Sun Chuanbin, saying that Sun's academic performance was very good that year, and there didn't seem to be a decline in grades when he was a freshman in high school.

Until his senior year of high school, his grades were very stable. Otherwise, he would not have been admitted to the National People's Congress. As for Liu Bin and the other three people in his dormitory, all the teachers in their class have left the school, although the school has given the contact information of these teachers.

But when I called to ask Liu Bin and others about the situation, these teachers all said that they couldn't remember. Even if some teachers are still a little impressed, they can only dimly remember that Liu Bin and others are not doing very well, and they hide in the back of the classroom all day long.

Xu Zheng listened to Fan Yu's account of her investigation today, and realized in his heart that the results were used to verify whether Liu Bin and the others had a change in their psychology at the time of the crime.

Whether their grades fluctuate or not. This method actually has buggs, and now I look at it, Liu Bin's results are at the bottom, and no matter how bad it is, how bad it can be.

Xu Zheng asked: "Sun Chuanbin, Liu Bin, Zhang Xiangyu, Lu Hongping, Luo Shikai, their current information has been investigated, right?" Fan Yu nodded,

"Let's be lucky, these five people are all in the capital now, Sun Chuanbin went to the best school, and he is still studying at Renmin University for graduate school. He is also a member of the school's student council. The rest of Liu Bin and others did not have satisfactory grades in high school, and they went to either two or three colleges, junior colleges. They are now doing all kinds of jobs, and only one of them entered the system as a police officer, serving in the criminal police brigade of the DX district office. Xu Zheng suddenly became interested,

"Oh, which one?"

"Luo Shikai, I'll share the information of our investigation with you, you can take a look first." Xu Zheng looked at Li Mingsheng while accepting the information,

"Brigade Li came over today, is there any surprise waiting for me in this case?"

"Haha, your kid's head melon is really easy to use." Li Mingsheng laughed, he flipped his computer desktop for Xu Zheng to see,

"Luo Shikai, his father Luo Jun. Ten years ago, when he was 44 years old, Luo Jun was a registered lawyer in a law firm, focusing on criminal lawsuits. He is now the presiding judge of the front chamber of a district court. Xu Zheng saw Li Mingsheng take this person out alone, and realized that they must have investigated a lot of information.

"Now is not the time for Brigade Li to sell off. Say it, say it. Li Mingsheng looked at Yan Lao, who smiled slightly and took over the conversation,

"That's like this, after you left yesterday, I re-sorted out the direction of our investigation. It is believed that there should be an adult involved in this case. After all, Liu Bin and the others don't even have a driver's license, even if they really use drones to transport corpses, but a drone costs tens of thousands of yuan, and they don't say whether they can buy it at first. Let's just say that they carried the corpses at night, avoiding all the cameras, and there was no big movement. I think there should be adults involved. He is even very familiar with the investigation ideas of our police. So I asked Mingsheng to investigate along this line of thought today, but what I didn't expect was that Luo Jun and Luo Shikai, father and son, used to live in the same community as Sun Chuanbin. And Luo Shikai is also Sun Chuanbin's hair. It's just that when the case happened, the family had already moved out of the community. Li Mingsheng added: "We are sure that this Luo Jun has a problem, not only because he is a lawyer by profession, but also because he used to be in the early morning of the second day of the crime. appeared in the crowd of onlookers. In the early morning of the second day of the crime, when he found Xu Zheng, the police specially filmed the incident, and the residents of the community gathered in groups next to the unit building where the crime occurred, discussing the situation of the case.

In one of the shots, Luo Jun was also in the crowd, eagerly discussing something with his neighbors.

Some criminals will be onlookers at the scene of the police investigation, not because they are bold, nor because they want to see their masterpieces.

It's because they want to get more information from the police who handle the case. So as to judge whether there is any omission in the case they have done, and whether they need to escape.

In fact, this is a very wise choice, because if the police have found clues, these criminals will either turn themselves in after dealing with the aftermath.

Either kill yourself or run away.

"Is this Luo Jun on the list of people who entered and left the community on the day of the crime?" Xu Zheng asked that the Luo family father and son had moved out of the community at the time of the crime, if the camera could have captured Luo Jun entering the community on the day of the crime.

Then his suspicion will be even greater.

"Nope!" Li Mingsheng showed Xu Zheng another piece of information,

There is also a coincidence that Luo Jun resigned from his job in a law firm a month after the case and was admitted to the civil service at the age of 34. Then he started as an assistant judge and worked his way up to the presiding judge of the front court, at the level of a full department. Xu Zheng looked at Luo Jun's information, which was very detailed, including student registration information, work history, commendations received and cases tried.

Looking at it now, this person is indeed very suspicious, a criminal lawyer is very familiar with the police handling process, and he used to be the owner of the deceased's community.

His son and the deceased Du Meijuan, Sun Chuanbin downstairs is small again. What is even more reminiscent is that he quit his job as a lawyer a month after the case, and instead went to take the civil service examination and become the chief judge.

There are a lot of coincidences in this no matter how you look at it. And there are too many coincidences, which means that he is the most suspicious.

Xu Zheng looked at Li Mingsheng,

"You must have other ingredients in your hand, and you still have them tucked away." Li Mingsheng shook his head with a wry smile,

"It's good that we can investigate so much information in one day, how can there be any other material, this is not waiting for you to come, let's study and judge. See what to do next. "Although there are a few suspects now, ten years later, there is still no substantive evidence in the hands of the police, and there is no human and material evidence.

The truth of the case is now all speculation.

"What's next?" Xu Zhengnian muttered a sentence and looked at Yan Lao,

"You're very experienced, tell me, what should we do?" Yan Lao spreads his hands,

"I have only one way, and that is to summon these people one by one and interrogate them first." This is indeed a way, and it is also a way to have no way, it can be regarded as a startling snake, but Xu Zheng frowned,

"If this case was done by Luo Jun and his son. One of them was admitted to the civil service at the age of 34, and the other was admitted to the second book and then became a police officer, or a criminal policeman. It can be said that their psychological quality is absolutely superior. If we really summon their father and son, let's not talk about whether they can be interrogated based on the existing evidence, and let's just say that their current work is not easy to summon. "The father and son are both civil servants, a presiding judge, and a criminal policeman, and it is really difficult to interrogate and confess without conclusive evidence.

At this time, Zhu Qing suddenly asked: "Elder Yan, you have always insisted on handling Du Meijuan's case, do you say that Luo Shikai already knows that we are investigating him." Yan Lao was stunned, he really hadn't thought about this question, Li Mingsheng shook his head with a smile,

"Today, after I found out Luo Shikai's information, I quickly checked the members of the criminal police detachment of our city bureau. None of them were his classmates or friends. And I checked the surveillance, and in the last three days, he has not been to the city bureau. Besides, the news that Xiao Xu set up a temporary task force to specialize in Du Meijuan's case is still only circulating in the city bureau. Xu Zheng changed his mind and said with a smile: "The soldiers are coming, the water is coming to cover the earth, if Luo Shikai really knows, then let him know, I will see what Yan Lao proposed just now." But Luo Jun, father and son, I don't think we should take action for the time being. First summon Sun Chuanbin, Liu Bin and others and interrogate them separately, maybe you can get answers from their mouths. "Because these suspects are all in the capital, Fan Yu also investigated their information today, and has their phone numbers and addresses, so he directly summoned them.

But instead of a phone call, Li Mingsheng sent plainclothes criminal police to go in person

"Please". Taking advantage of this gap, Xu Zheng, Li Mingsheng and Yan Lao discussed the interrogators, so that they would be brought back and interrogated separately.

At five o'clock in the afternoon, Xu Zheng and Fan Yu walked into the inquiry room, and Sun Chuanbin was already sitting opposite them at this time.

Sun Chuanbin was busy reading books in school today, he graduated with a master's degree this year, and was busy reviewing the books for the exam, but he didn't expect to be suddenly called to the office by the school leaders.

He walked into the office of the school leader, said hello, and was taken to the city bureau by two plainclothes criminal police officers waiting there on the pretext of cooperating with the police.

Watching the police arrange himself into the interrogation room, he breathed a sigh of relief, the interrogation was not an interrogation, at least the police did not treat him as a criminal suspect.

It's just that he doesn't seem to have anything to do with the police. When Xu Zheng first came in, he found that Sun Chuanbin was quite calm, after all, he was a graduate student of the National People's Congress, and he had exercised in the student union, so it was normal to be a little bit of a city government.

"Sun Chuanbin, we are investigating the case of Du Meijuan's death, and there are some things that require your cooperation."

"Du Meijuan!?" As soon as he finished the procedure, Sun Chuanbin heard an explosive news from the young policeman opposite, and he was directly dumbfounded.

The old past sealed in his memory instantly reappeared in his mind, and he subconsciously said: "I didn't kill her, why are you looking for me?" Xu Zheng immediately followed his words and asked, "Then who killed her?" ”

"I..." Sun Chuanbin was a person who had gone to college and seen the world, and he was in extreme shock, but Xu Zheng's question made him react.

Swallowed back what he wanted to say, and calmed down, he slowly calmed down,

"I don't know who killed Du Meijuan, but I heard that she was killed by her boyfriend. And her boyfriend died three days before her. So, who killed him, this should be the job of your police."