The meaning of Luo He's words is very clear, this is a small case, and the Criminal Technology Department of the Municipal Bureau may not buy it.

It's not that the police officers in the Forensic Technology Section like to be lazy, it's that they can't keep themselves busy at all.

If it's a small case like this, send them a cigarette butt, and they all have to test and compare, and this group of otaku won't want to sleep.

What's more, Luo He is still skeptical about the value of this cigarette butt.

Mu Yuan also understood the meaning of Luo He's words, and was slightly stunned.

It's not that he's worried that the forensic technology office won't give him a test, but what is the use of the test?

If you happen to be successful in the DNA bank, then everyone will be happy. But what if you don't get it?

Is it to conduct a carpet investigation, large-scale blood drawing and comparison, or to wait for the suspect to be drawn after committing a crime elsewhere, and then successfully solve the case?

No matter which one it is, Mu Yuan doesn't think it's very reliable.

"Let's take it back first. Mu Yuandao, "Is there a physical evidence bag in the car?"

"Yes!" Luo He nodded.

A few minutes later, the physical evidence bag arrived, and Mu Yuan loaded the cigarette butt into it in a not very professional way of gnawing chicken feet with gloves.

This is also a helpless move, when the police station is dealing with police, you can't expect their equipment to be as complete as the criminal investigation and investigation, right? It would be good not to leave your fingerprints on it.

Mu Yuan then walked around the surroundings again, and when Luo He didn't understand the situation at all, Mu Yuan said goodbye and got into the car.

......

Sitting back in the car, Mu Yuan fell into deep thought.

After wandering around for so long, whether it was the cigarette butts he had identified through the trace examination technique or the breath he had smelled through his nose, he could determine at least a few aspects of the situation.

First, there is only one perpetrator.

Second, the perpetrator smoked cigarettes and was an old smoker.

Third, the route of the perpetrators from the scene.

Through the above situation, Mu Yuan basically ruled out the possibility that last night's car smashing case was the so-called possibility of the previous group of problem teenagers.

At the same time, he deduced that the perpetrators were most likely adults.

The reason is very simple, psychologically speaking, when minors do bad things, they are generally in groups. In a situation like this, only adults can do it.

And in the middle of the night, a single minor does not dare to wander alone on the street.

However, these inferences still need some realistic things to support, after all, there is only one suspect, who sniffed out through his nose, and he is not ready to be a police dog...... Uh, uh, he wasn't going to tell that until he was ready to be considered an abnormal human.

Fortunately, it is easy to get clues to support this assertion, just look at the surveillance.

When Mu Yuan and the three returned to Qinglong Street, the victims arrived and only three of them, including the big guy who hid a box of Okamoto 001 in the car at any time.

As for why the other victims didn't come, I can actually think of it......

At this time, the director and the instructor went to the sub-bureau for a meeting, and Deputy Director Liu, who was in charge of the case investigation, and Ding Mao, the leader of the crime investigation squadron, were all on a business trip, and only Deputy Director Zhao was left in charge of the office.

Arrange for someone to make a record for the victim, command and dispatch the police work, and have a good time.

Only he didn't want to intervene in the case investigation, so he threw a sentence to Mu Yuan: You are responsible for handling it, so you won't ask anymore.

Mu Yuan was also happy that no one was supervising, and he hurriedly ran to the monitoring room alone.

This time, Li Xiang and Yue Fei were in the monitoring room, and when they saw Mu Yuan coming in, they had a strong look of worship in their eyes.

666, the big guy is coming to see the surveillance again! The big guy is going to arrest people again!

I don't know which little cute new suspect is trembling under the clutches of the big guy......

"Brother Li, please call up the surveillance at the south end of Sixun Street, the time is about 4 to 5 o'clock in the morning. ”

"Okay!" Li Xiang replied happily.

In less than a minute, the screen was already showing the street of Sixun Street.

The surveillance presents a picture of the sidewalk, under the dim street lamp, everything seems blurry, especially under the tall street lamp, the trees on both sides leave mottled shadows, even if someone really walks under the surveillance, they can't see each other's faces clearly.

"Brother Mu, just watch it for an hour, do you want to fast forward? Even if you put it at eight times the speed, you can see it when someone passes by under the surveillance. ”

Mu Yuan shook his head and said, "The suspect didn't pass under the surveillance. ”

Li Xiang: o((⊙_⊙))o, didn't pass under the surveillance? What kind of surveillance do you see?

Three questions, Li Xiang looked at Mu Yuan, who was staring at the screen with a serious face, and he felt that he seemed to have discovered some great secret.

Watching surveillance is the most boring job, especially watching surveillance that can't be fast-forwarded, and the boring waiting can make people doubt life.

What does it feel like? It's as if you have a happy present, but you want to force yourself into a past that you can't change......

But Mu Yuan didn't seem to be bored, he looked at every detail in the picture intently, as if he wanted to find the ghost floating past from the mottled shadows of the trees!

I don't know if there is a ghost, anyway, after watching it for nearly half an hour, Mu Yuan suddenly slammed the spacebar.

Time out!

Single frame back......

One frame, two frames......

Li Xiang and Yue Fei also stretched out their heads and stared at the screen, wanting to see what was on it.

But as a result, not even a fly flew on the screen.

"Could it be that Brother Mu's eyes have opened the eyes of heaven and can see things that mortals can't see?"

Li Xiang glanced at Mu Yuan even more suspiciously: "I heard that mental illness can see things that others can't see, it seems that there is some truth." ”

Fortunately, Mu Yuan didn't have the ability to read minds, otherwise he would probably cry angrily.

He's still watching frame by frame......

Yue Fei finally couldn't help it and asked, "Brother Mu, what are you looking at?"

Mu Yuan smiled slightly, with an inexplicable light in his eyes, and said, "Look at the ground! ”

He said as he moved forward in a single frame.

Yue Fei smiled bitterly: "This ...... Nothing is good or bad. ”

As soon as his words fell, Li Xiang exclaimed, "Shadow! A shadow passed from here." ”

Yue Fei had goosebumps all over his body.

It's a midnight surveillance, and you say there's a shadow floating by, which is too scary, right?

Mu Yuan said calmly: "That's right! And it's a shadow of a person. ”

Yue Fei took a serious look again, and sure enough, he saw a very vague shadow flickering from the corner of the surveillance.

Judging from the perspective of surveillance, the generation of this figure should be someone walking on the road and projected by the street lamp on the opposite side.

Thinking about this truth, Yue Fei didn't feel frightened, but his doubts were not resolved, and he immediately asked: "Is this...... What's the use?"

Mu Yuan said: "Naturally, there is a use, this can basically be determined, the car smashing and theft that happened on Sixun Street last night was a separate crime." At the same time, it can also lock the exact time of the suspect's crime. ”

Yue Fei and the others were stunned for a moment, and when they thought about it seriously, it seemed to be the truth.

The two of them were overjoyed, and they learned another trick!

As a watchdog specialist, the most useful ability is to spot suspects from surveillance video, as this is directly linked to their bonuses.

In the past, they watched the surveillance to stare at the suspicious people and suspicious vehicles inside, but now they know that they can still see the shadows......