A meeting determined that this Xiang Earn and Yan Gang were the suspects in this case, this kind of case is better to be cautious, there is no investigation of the remaining civil servants, the magic capital went to school to work, and it was transferred back to Changming City two years ago.

Then the next step is to compare the date of the investigation and their whereabouts.

In the end, Xiang Zheng was determined to be the final suspect, mainly because when he was in the five cases, all his whereabouts could not be found, and Yan Gang was in court twice in session...

Xu Zheng originally thought that the case would advance quickly with a suspect, but now they have been looking for evidence for three days, but all the evidence is still only speculation, and even the slightest relationship cannot be linked to the person who is currently suspected.

Qu Hou scratched his oily hair that hadn't been washed for three or four days, he had smoked very hard in the past few days, and his voice was a little hoarse, "Comrades, maybe it's a good thing that we have been handling the case for a longer time, this murderer knows that we took the camera and coin catapult at the scene of the accident, and a little longer time can make people relax their vigilance." ”

The police have now secretly followed and observed the current suspect, of course, this is approved by the above, but this is a passive wait, obviously this group of criminal investigation police are unwilling, but there is no line to check.

Check from the traces and evidence, there is no trace of him at the scene, the evidence is either modified or bought anonymously, but even if it is found that he bought a camera, can't people have a little hobby?

From the time of the crime and the motive for the crime, Xu Zheng and they also scratched their heads, the delivery man suspected that it was a quarrel, the young woman who jumped off the building suspected that she couldn't court, and as for the aunt's heart attack and accidental homicide in a car accident, the police didn't find their connection.

At present, the task force has changed its thinking and continues to dig deep into the unknown accidental homicide cases committed by the suspects in Changming City.

Sure enough, the police resources were tilted, and three more cases were determined in two days, and this time, Deputy Director Nie and Wan Haihong, the head of the detachment, came over again to cheer up the task force.

But Xu Zheng felt that he was actually pressuring for cheering, and after they left, Qu Hou was a little nervous now, sometimes he was distracted when he was talking, and he didn't react until the cigarette butt burned.

Of course, the other colleagues in the conference room are similar, Xu Zheng feels that he is not alone so far, he is a little frustrated, is it because he is not serious about handling the case?

Qu Hou is worthy of being an experienced old criminal policeman, a cigarette burned to the butt of the cigarette, scalded him, he stared at the cigarette butt, and slapped the table, "Go back to the source, yes, let's go back to the source... You see, in Changming City, the suspect's modus operandi is a bit pure, then he must have done such a case before coming to Changming City.

Also, from the time he was a child, until he graduated from high school, I calculated, he was 19 years old when he went to college, he is now 46 years old, and it is about 27 years from now, and it is estimated that even if such a murder happened in his high school, there may not be a file in the local area.

But let's still have to check.

is still divided into three groups, one group goes to the suspect's hometown, from his childhood to his high school graduation, not asking for the file at that time, as long as there is a general plot of the case.

The second group of suspects went to school ten years ago, that is, in 2023, and the accidental death cases during this period of time must be searched in several districts of Changming City.

The third group, investigating cases from 10 years ago so far, focuses on finding clues and evidence. ”

After Qu Hou finished the order, he turned his head to look at Zhang Yuqi, "Captain Yuqi, I can't leave here in the task force, you can lead the team to investigate the suspect's hometown, right?" ”

Zhang Yuqi nodded, "Okay, it's still the four of us, it happened to be a run-in last time." ”

Xu Zheng always felt that he would be unlucky under Zhang Yuqi's hands in the future, but the leader's order was as big as the sky, and he could only honestly drive the police car to take the three of them to the county seat of Liushui County, Yanshui City, Pingjiang Province.

When he learned that his colleagues in Changming City had come to investigate Xiang Zheng, he wondered if the criminal police detachment in Changming City was mistaken.

Xiang Zheng is not only a professor of Changming University, but also a member of the CPPCC of Liushui County, he has provided economic consulting to governments at all levels in Liushui County for many times, and helped Liushui County to attract investment, and achieved remarkable results.

But he may have violated the criminal law, and after Zhang Yuqi took out the certificate issued by the Changming City police, this old criminal policeman, who was close to fifty years old and was about to take a back seat, had to accept the other side of Xiang Zheng.

If you want to understand the environment in which a person grew up, in addition to his parents, brothers and sisters, there are only neighbors and Fa Xiao, and as he goes to school, he is a teacher and a classmate, Xiang Zheng's family and neighbor Zhang Yuqi did not plan to be alarmed, so the focus is to investigate Xiang Zheng's teacher.

Of course, Sun Dacheng, who has been working in the criminal investigation of Liushui County for the longest time, is also a key target.

"If you want to talk about accidental death, it is a man-made accidental death, I must have encountered it over the years, but we all caught the real culprit in the end, mainly because their modus operandi was rough and there were many clues.

But the accidental car accident murder case I just heard you talk about, tsk, this method is seamless, and the calculation is really deep. ”

"Captain Sun, this time we are here to investigate whether he did such a case before going to college, think about it again, even if it is not an accidental homicide, is there any backlog of difficult cases in Liushui County, or the case of the disappearance of classmates and teachers related to Xiang Zheng."

Sun Dacheng fell into the memory, and said while walking with his hands behind his back, "Captain Zhang, I have a vague impression, so let's go to the archives to check the information, you sit here for a while, I will take a little longer." ”

"No, Captain Sun, our task here is very tight, so let's go to the school to investigate first." Zhang Yuqi obviously won't waste a minute here, but more than 20 years have passed, and it will be more difficult for those teachers to find back then.

"Don't go to the school, I'll ask my colleague to check it for you later, oh, by the way, there is an old teacher in our county, who is almost seventy this year, is Xiang Zheng's high school math teacher, and every year Xiang Zheng returns to his hometown, he will visit this old man."

Sun Dacheng finally accompanied Zhang Yuqi and Xu Zheng to visit the old teacher, and as for the archives, Zhuang Qiang and Ji Meiyue entered the archives with the help of a deputy captain of the Liushui County Criminal Police Brigade to check the information.

When I found the old teacher, he was sitting playing mahjong under the grove, and this small forest was crowded with elderly mahjong enthusiasts.

Back at the old teacher's house, Sun Dacheng explained his intentions, of course the old teacher didn't believe it, and it was another explanation, and finally shrank back in the chair and fell silent.

Xu Zheng is not worried that he will not say it, just like Zhang Yuqi explained to him, this kind of old teacher who insists on teaching at the grassroots level with his original intention is more concerned about the public and the people than anything else.

"You want to ask Xiang Zheng how he did in high school, right? Alas, it has been 30 years, and he can become a professor, which means that when he went to school, he must have been a good student with excellent character and learning in our eyes. He is the pride of my life, and I really have a lot of impressions.

I seem to remember that Xiang Zheng and I had a quarrel in high school, it was a liberal arts and science class, he was very good at mathematics at that time, and he also liked mathematics, a bit of a subject. I remember when I gave him a small make-up class in private, he was still young, and he often said that mathematics is the foundation of everything, and he will study mathematics in the future, so that everything in this world can be explained by mathematics.

So as soon as I saw that he had applied for the liberal arts, I pulled him outside, and the result was a fight between us, and I remember him saying that he was going to study economics and earn money to buy a large computer to study mathematics.

At the time, I was laughed at because I didn't think that he would actually become an economics professor in the end. ”

After the old teacher finished speaking, he let out a long sigh, "Xiang Zheng, although he is very cheerful on the outside, in fact, he is cold by nature, for so many years, we are good teachers and students to the outside world, but I know from the time he went to college that our relationship is pure ordinary teachers and students." ”

After listening to this, Xu Zheng's life experience couldn't understand the old teacher's current distress, so he asked casually: "Uncle, does he come to see you every year for a show?" ”

Zhang Yuqi glared at him, and before Zhang Yuqi could explain, the old teacher waved his hand with a wry smile, "Yes and no, in short, it's hard to say, oh, by the way, I still have Xiang Zheng's graduation photo here, do you need it?" ”

Around 20,000, the photographic technology was enough for people to see the faces of these students, and Xu Zheng easily recognized Xiang Zheng.

"By the way, I remember that Xiang Zheng almost didn't take the college entrance examination that year, because a classmate in our class had a car accident, and he helped on the spot.

Zhang Yuqi and Xu Zheng glanced at each other, is this evidence uninvited?

On the other side, Zhuang Qiang was fiddling with his long hair on the bald side while looking at the backlog of cases in Liushui County in the past 30 years.

"Brother Qiang, look at this, 30 years ago, a junior high school student disappeared, and according to the case file, the case has not been closed, which means that the student has not been found.

I just counted the time and date and the school, and this missing classmate is Xiang Zheng's classmate.

So I think there's something strange about this case. ”