"Do you understand?"

"Listen to understand!"

For Chen Yan, even these heroes of the Shenshi Investigation Team are convinced.

Nonsense, who is not convinced by a ruthless person who has won personal skills?

What's more, after Chen Yan just took office as the leader of the heavy case team last year, the first case detected was sinking.

"Below, please deploy work!"

Chen Yan didn't talk nonsense, stood up and opened the projector directly.

"Everyone, we will work in the following aspects."

"First, we have to check all the surveillance video materials of the victim Li Yansong taxis from last night to the early morning of this morning."

The projection is open, the last picture of Li Yansong taxi taken by the 36th camera of Fenghuang Street.

When Chen Yan arrived at the scene of the incident in the morning, when the organizer's survey site had been organized, Wang Fenglei arranged for people to check all driving surveillance videos of Li Yansong taxis through the Tianyan system.

At present, it has been basically completed, but from 3:08 am today, after Li Yansong's taxi appeared at the monitoring video at No. 36 Phoenix Street, this taxi never appeared within the scope of the monitoring of the Tianyan system.

"Phoenix Street is the last place where Li Yansong's taxi appeared. Everyone looks here." Projection switching is a map.

"According to the situation of the victim's body, we infer that Li Yansong's victims should be around 4:30 am today."

"From 3:08 to 4:30, there is 1 hour and 22 minutes in the middle."

"In other words, the murderer must have set up Li Yansong in this time, and then commit crimes."

"Just before the meeting, Li Yansong's time report had come out. It can be determined that the reason for Li Yansong's direct death is the blood loss shock."

"But at the same time, we detected ether in Li Yansong's mouth."

"It can be determined that the murderer first fainted Li Yansong with ether, then drove the car to the cement factory area, and then killed and cleaned the traces."

In this judgment, Chen Yan and Wang Fenglei have reached a consensus.

"The distance between Fenghuang Street is 4.7 kilometers away from the cement plant. If you drive from the normal route, you need to pass 5 traffic lights and 7 monitoring cameras."

"However, Li Yansong's taxi was taken on the screen at 36 Phoenix Street, disappeared."

"What does this mean?"

"Explain that the murderer is after the taxi drove the camera No. 36, and when the camera 37 was reached, the car was on!"

"But after the murderer got on the car, it obviously did not let Li Yansong continue to move along Fenghuang Street, but turned into the alley next to it."

Everyone agrees with Chen Yan's analysis, otherwise Li Yansong's taxi should appear in the 37th camera.

Chen Yanfang's big map photo: "About the history of Phoenix Street, you should be familiar with me."

Everyone nodded.

The history of Fenghuang Street has been in Shenshi for more than 50 years. It has always been a shantytown, and it has built a house.

There are many personnel, the number of renting the house, and the dense personnel flow is the characteristics of this area.

"The roads in Phoenix Street are intricate, and only the monitoring camera of the Tianyan system at a specific point."

"The murderer must be very familiar with this. After getting in the car, he directed Li Yansong to drive a taxi to avoid the camera, but many of the self -built houses in it have their own monitoring cameras."

"These cameras are not connected to the Internet, but it is likely to take some things."

"The first thing we have to do now is to thoroughly check the self -built houses of the entire Phoenix Street, find all private surveillance cameras, and analyze and compare the videos from 3:08 from 4:30 yesterday.

, See if you can get some clues in the video. "

"Captain Liu Qingshan, this job is led by you,"

Chen Yan looked at Wang Kun: "Also invited Deputy Captain Wang Group

Cooperate with investigators. "

"Rest assured, I must cooperate with myself."

Wang Kun did not have conflict because Chen Yan asked Liu Qingshan to lead.

As Wang Fenglei said, this case was a sharp sword hanging on the entire Shenshi investigating team.

The only goal of their present is to detect the case.

Chen Yan nodded. In this regard, he knew that the Shenshi Investigation Team would definitely cooperate with him. In the final analysis, he was helping them handle the case.

"Second, conduct detailed investigations on Li Yansong's social background and interpersonal relationships."

Chen Yan knew that Wang Fenglei had sent someone to investigate Li Yansong's social background, and basically excluded the possibility of someone who pretended to kill the murder.

However, some things are not afraid of 10,000, just in case.

The murderer of the serial case did not do the case in 10 years, and it used to be to rob wealth. This time, there was nothing to try, just to kill?

Although the details of the case of a serial murder case were not announced to the society, is there any possibility of coincidence?

Although this possibility is very small, it still exists.

"Zhang Chaoyang's job, you come to advance!"

"yes!"

Zhang Chaoyang is a foreigner and is not familiar with some of the local situations of Shenshi, but the angle of the views of foreign people is different. Maybe you can find some other clues of Li Yansong.

"The third is to analyze the traces of the scene."

Speaking of which, everyone is excited.

Because the investigation of this case is very different from before.

In the previous four cases, no clues were found at the scene.

Fingerprint, footprint nothing.

This is why the case became a case.

But this time because of the existence of Chen Yan, there are many details found at the scene.

"footprint!"

"This is the biggest clue we found at the scene!"

That's right, on the foot pad of the driving seat, the survey with three sets of footprints was extracted.

The photo is a photo of three sets of footprints: "Three sets of footprints are overlapped together, and technical staff are being stripped. Two of them, theoretically analysis should belong to Li Yansong and Bai class drivers, and the third footprints are likely to belong to

murderer."

Because the murderer had drove a taxi, this set of footprints were likely to be left by the murderer.

However, because the space of the driver's seat is very small, the shoe prints on the foot pads are superimposed together, and it is difficult to peel off the installment.

However, this is not impossible. In terms of technology, whether it is superimposed or fingerprints, you can peel off.

It's just that time may be longer.

"After the footprint peeling, compare personnel in the system in the system as soon as possible."

The traces of footprints will definitely not leave files. After that, there will be a record of the files in the front subject.

If this murderer had committed the accident before, it would be easy to do.
Chapter completed!