"Teacher Liu, do you remember that at the beginning of January last year, did Zhou Meng ask for leave?"

"At the beginning of January the year before last?" the homeroom teacher was stunned, and the student asked for leave? Isn't this normal in the seventh middle school?

"Yes, it's the time when the first half of the third year of high school is about to end. ”

After thinking about it carefully, Mr. Liu suddenly felt a little surprised.

"He did take a leave of absence, and it wasn't short. Teacher Liu said with a little suspicion.

If he only took a day or two off, he probably forgot about it, but he took more than ten days off in a row, which made Mr. Liu feel impressed, not to mention that the time to take leave was at the end of the third year of high school.

Although No. 7 Middle School is not a good high school, and students studying in No. 7 Middle School do not have the luxury of being admitted to any good university, there is basically no situation like this of taking more than ten days off in a row.

"What was the reason for his leave at the time?"

But he said his mother was sick and needed him to take care of her. I also knew some about the situation in his family, and I thought that this child was usually quite honest, so I granted him leave. How...... During that time, were there any problems?"

Mu Yuan smiled slightly and said, "It's not certain yet." Do you remember the days when he took time off?"

"This ...... I really don't remember exactly. Then...... It seems that it has just passed New Year's Day, right? By the way, just a week has passed, and he took a full two weeks off on Friday of the week after the New Year's Day holiday. ”

Mu Yuan nodded and asked again, "Then is there anything abnormal about his performance after he came back?"

"Anomalous? Nothing, right? Uh, I think about it, if I want to say anomalous, there are really some, as if he is a little more cheerful than before. In the past, Zhou Meng never played with his classmates, and he never greeted our teacher when he saw us, but after he came back that time, he sometimes called me when he saw me, and I thought it was quite strange at the time, he seemed to suddenly be much more sensible. ”

The eyes of the Ming Brigade and others on the side gradually became hot.

Seem...... The situation is moving in the direction of the inference, and although the result is not necessarily what they expected, they are seeking the truth, not the result that meets the expectations of the public.

Cases, especially homicides, are not what the public expects, whether it is the case itself or what is hidden behind the case, many times there are some tragedies.

Subsequently, Mu Yuan asked some trivial things, and some of them could be answered by Mr. Liu, while others forgot about them.

At the end of the inquiry, Mu Yuan asked the homeroom teacher to sign the transcript, and then left No. 7 Middle School.

Sitting back in the car, the Ming team looked a little excited.

"Mu detachment, you are still powerful! After peeling off the cocoon layer by layer, the situation is almost clear. ”

Qin An, a scout who came with the Ming Brigade, said: "Mu Detachment, Ming Brigade, now...... Do you want to arrest Zhou Meng immediately?"

Although the Ming team was a little eager to try, they did not return, but turned their eyes to Mu Yuan.

Mu Yuan shook his head and said, "The time is not ripe enough, what Mr. Liu said just now just proves from the side that Zhou Meng has time to commit crimes." ”

"His motive for committing the crime also exists. Qin An said.

Mu Yuan said: "What you said is indeed right. But these things alone are not enough to make a conclusion about this case. ”

The Ming Brigade and the others were a little puzzled, they used to handle cases, if they could reconnoiter to this extent, they could almost arrest people directly, and as for more detailed things, they could be interrogated.

"Then how are we going to investigate now?" asked Brigade Ming.

Mu Yuan said: "I will first Qingyu County, and then go through the surveillance video data at that time completely." The three of you will stay behind first and investigate the relevant situation in detail. On the one hand, understand the daily life of Zhou Meng and pay attention to ways and means. On the other hand, didn't Mr. Liu just say that Zhou Meng's reason for taking leave was that his mother was sick, and you should check his mother's situation. ”

"Understood!" the Ming Brigade agreed very simply.

......

Mu Yuan did not stay in Rongyang City, and rushed back to Qingyu County overnight.

Halfway through, he called Director Wu of Qingyu County and asked him to prepare the materials first.

The surveillance video data that Mu Yuan wanted to see was naturally not only the information retrieved in this case, but also all the surveillance video materials in Qingyu County during that time period.

Of course, almost three years have passed since the case, and the surveillance video will definitely not be preserved for so long.

However, some surveillance will still be retained, such as video footage related to related cases.

Mu Yuan called Director Wu in the hope that he could integrate this part of the video materials together, and he could view them when he returned.

On a certain level, Mu Yuan's approach is quite a needle in a haystack, but there is still a possibility of its success.

After all, if Zhou Meng was really the murderer, judging from the time period when he took leave, he should have stayed in Qingyu County long enough.

For such a long time, there will always be a figure left in many surveillance images. Most of these footage have been lost over time, but what if one of the footage remains?

As long as there is a picture that can prove that Zhou Meng has indeed been to Qingyu County, it is a very important evidence.

Of course, even if there is no harvest on the side of Qingyu County, the Ming Brigade will definitely not return empty-handed.

As long as the Ming Brigade investigates that during that time period, Zhou Meng did not stay at home and did not really take care of his mother, it can also become a piece of evidence, but this evidence is still a little worse than the surveillance video filming Zhou Meng's activities in Qingyu County.

But with these, it is also possible to arrest Zhou Meng first and conduct a preliminary interrogation.

Regarding Mu Yuan's request, although Director Wu felt a little headache, he still agreed very simply.

This matter, the trouble is a little troublesome, but compared to the cracking of a murder case, it is really nothing.

More than an hour passed, Mu Yuan drove Gu Jun back to Qingyu County.

Although he was just in the car, Gu Jun was still very depressed.

He couldn't understand the meaning of his previous strong request to follow Mu Yuan to Rongyang City on a business trip, was it just for a three- or four-hour car?

You're sick, aren't you?

Stay in Qingyu County in the morning, whether it's to sleep, or go shopping or something, isn't it fragrant?

He thought carefully about the situation of the last time he accompanied the Mu detachment to Leya City, and suddenly discovered an amazing pattern.

Seemingly...... I'm afraid that I didn't have a fake errand, right? That was called a business trip before? And when I went out with the Mu detachment, I was obviously in a hurry, and I rushed all the way non-stop.

He seriously suspected that he would go to the hotel to sleep at this time, and he would have to go back to Xihua City tomorrow morning.

In the future, will those guys in the hall give themselves the nickname "Gu Run Run"?

......

Mu Yuan's experience in watching surveillance is far from being comparable to ordinary police, even if he is a police officer who specializes in video investigation, he is a cut behind Mu Yuan.

When Mu Yuan came to the case research and judgment room of the Qingyu County Bureau, Director Wu was already waiting there.

Next to him sat a police officer next to a computer, and next to it was a stack of hard drives.

"Mu detachment, the video we collected here...... A bit much. Do you need to make a selection first?"

"No need!" Mu Yuan said calmly, "Wu Ju, today is still Sunday, if you have something to do, go and get busy first, I'll just watch it here alone." ”

"How does this work?"

"What's the matter, Director Wu, are you still worried that I will move your computer?" Mu Yuan said with a smile.

"Of course not. Director Wu hurriedly said, "After all, this is the case of our Qingyu County Bureau, we went to the weekend by ourselves, leaving the Mu detachment to work here, it's not like that!"

"But you can't help by keeping it, there's no need to waste your energy here. Take a good rest and have more energy to devote to work tomorrow. ”

Director Wu felt liver pain......

Although this is the truth, don't you say it?

But when it comes to this, what else can Director Wu say? Could it be that he sent two people to sit and play with you? Or did he throw two people here as supervisors?

Helpless, Director Wu had no choice but to follow Mu Yuan's intention and go to the weekend.

It's just that he doesn't have much pleasure in his heart for the weekend.

After all, I was disgusted just now, and if I can still feel happy, my heart is too big.

After Director Wu and the others left, Mu Yuan occupied the entire case research and judgment room alone.

He majored in software engineering in college, so naturally there is no such thing as not being able to fiddle with computers.

He first checked Zhou Meng's personal information on the Internet, especially his personal ID photo, and memorized the other party's physiognomy before he officially started work.

I saw him quickly plug a hard drive into the computer, then skillfully open the playback software, drink a set of three bottles of potions, and then start watching videos.

There are many types of these videos, and the origins are very extensive, including Skynet surveillance video built by the public security, surveillance installed by businesses themselves, and surveillance video installed in hotels, Internet cafes and other public places.

What these videos all have in common is that they are related to cases that happened at the time.

It's just that the time period for surveillance video retrieval is relatively long, and it is not completely retained only the part of the case that occurred at the time of the case.

Several surveillance videos were played at a time, and Mu Yuan's eyes turned faster than a fox.

The picture was presented and analyzed in Mu Yuan's mind.

In fact, Mu Yuan has some small resentments in his heart, this case, if the time of the crime was a year ago, it would be much easier to search for evidence by himself, because Qingyu County built many face bayonets a year ago, and this kind of structured data is stored for a long time, unlike those monitoring, which will be covered in a month or two at most.

If there is face mount data at that time, it is very simple to find the trajectory of the target by yourself.

As the minutes passed, the effect of the Brainstorming Elixir gradually faded......

There's one more chapter tonight!

(End of chapter)