Chapter 309: Surveillance and Pursuit of the Murderer

The investigation of the National Security Bureau is different from that of the police.

They emphasize efficiency.

All investigations, investigations, and tracing must give way to efficiency.

All rules and regulations become ridiculous in the face of efficiency.

The blind girl's past travel routes were investigated clearly in one hour.

The other party is blind and rarely goes out.

As mentioned in the plot of Fang Shuoxin's novel.

Xiaoyu said that this world is not very friendly to the blind.

She is a little afraid to face this "dark" world!

Even if she goes out on weekdays, the blind girl mostly goes to a fixed place.

Walk out of the community, bus, subway station... and finally the blind school!

Blind people also have schools?

Not only that, but there are quite a few.

They are all teaching the blind how to adapt to the world.

Skills on how to live without light.

At the same time, they also teach some skills that the blind can master.

The route is not long, and it is very simple to investigate.

But it is very difficult to find someone.

Because there are too many people on this road, it is impossible to list everyone as a suspect.

And some of the surveillance footage retrieved was from the last one or two months.

Surveillance footage from more than 240 places will not be kept for a long time.

But one or two months of surveillance is enough.

How to identify suspicious persons?

The dumbest way.

Compare all surveillance footage with people who have appeared next to the blind girl many times.

As Xiao Yu would say after investigation, where is there such a coincidence in the world?

As long as someone has appeared on the route and has appeared next to the blind girl many times.

He must be listed as a key suspect.

Didn’t Xiaoyu fall in love with the so-called "Dark Dragon"?

Can't we investigate this directly?

The National Security Bureau and the police have already investigated this.

The other party is not a fool, and is even quite smart.

Every time he met Xiaoyu, it was impossible to track him.

It seemed that he was deliberately leaving the "surveillance" range.

Without this IQ, he would have been caught long ago...

Eleven hours.

Xiao Yu, Wang Dong, ten members of the second team, and dozens of local police officers investigated and compared the blind girl's past travel surveillance until...

A suspect appeared in the video surveillance!

"In the past two months, the blind girl left home 31 times, 22 of which could not be tracked, but 9 times she went to the blind school. On three occasions on the way to the blind school, a suspect appeared next to the blind girl twice... There is a suspicion, but it may also be a coincidence!"

Wang Dong said to his younger brother while looking at the surveillance video.

Twice... Xiao Yu frowned and looked at the man on the surveillance screen.

Twice can be said to be a coincidence, and it is also within the reasonable range of coincidence.

More than two coincidences are generally not coincidences.

Surveillance video screen.

The man was wearing a baseball cap, and only half of his face could be seen in the surveillance.

The height can be inferred to be more than 180, the body is neither fat nor thin, and the shoe size cannot be inferred.

The surveillance angle cannot see the man's legs below.

The video was shot at the door of the bus.

The blind girl got off the train at the station, and the man got off after her.

The second surveillance video.

Inside the subway car.

This time, the suspect's entire body can be seen.

He is 180cm tall, his clothes are loose and his figure cannot be seen, and his shoe size is... basketball shoes.

His shoe size may be more than size 44.

A size 44 shoe for a height of 180cm is also within the normal range.

One thing to know is that basketball shoes are large in size.

If the size is 44, it should be reduced by at least 2 sizes to be a normal foot shape.

Shoe size 42?

Xiao Yu's heart suddenly beat strongly.

He thought of a case.

City C, murder case of a silver-selling woman's den.

Three victims were "executed by ancient methods".

At that time, he had already investigated the scene and roughly inferred the body shape of the perpetrator from some footprints on the building and the mouth of the person who called the police.

Over 180cm tall, thin, single eyelids, scary eyes, shoe size between 40 and 42 (aefc)... left-handed!

Compare the surveillance video in front of him.

The body size matches, but the body shape cannot be determined. Whether it is single eyelid or not cannot be checked because of the hat.

As for the shoe size 40 to 42... is there a difference with the shoe size of the suspect in the surveillance video?

No.

It matches!

Because the man in the surveillance video is wearing a pair of basketball shoes.

How could the perpetrator in that "ancient execution" case wear basketball shoes to commit the crime?

Wearing such shoes to climb a building and enter the building from the rooftop is inconvenient in itself.

It can be inferred that the shoes worn by the perpetrator at the time should be mainly light and normal in shape.

42 shoe size!

The height and shoe size have been compared, and even the body shape can be roughly matched.

In the surveillance video, the suspect's clothes are relatively spacious, and he is definitely not strong and fat.

Height, thin, shoe size...

Staring at the man in the surveillance video, Xiao Yu ordered, "Find him!"

With Guoan's ability to find people, those who understand will understand.

It's not intentional hiding. One hour is enough to find someone in a city.

As a result, an hour later...

"It should be him."

Wang Dong reported to Xiao Yu with a sullen face, "Our people can't find him!"

"Ha!"

Hearing this news, Xiao Yu laughed instead and breathed a sigh of relief.

That's right, the person who even the National Security Bureau can't find for the time being is hiding on purpose.

Why are you hiding if you haven't committed a crime? If not him, who else could it be?

After confirming the target, the remaining work is to find him and catch him!

Unfortunately... neither of the two surveillance cameras can see the other person's face.

Only the figure can't be compared with the big database.

So the identity of the other person cannot be found for the time being.

Can't find someone without information?

No, the surveillance video is reconstructed and checked.

This time, it is not the blind girl who is locked, but the suspected man.

Because whether it is getting on the bus or entering the subway.

You have to appear in the surveillance, right?

From the surveillance on the bus and subway, use the timeline to retrieve the city's Sky Eye surveillance... reverse tracing!

First of all, the city's Sky Eye surveillance will definitely cover important places such as stations.

The so-called reverse tracing.

It is to reverse from these places little by little, just like playing the video in reverse.

Wherever the suspect has appeared.

Going back little by little, looking for the place where he first appeared little by little.

And the most important point.

The suspect appeared twice, it seems that he was following the blind girl, right?

Was he observing and investigating the blind girl, and then waiting for an opportunity to approach her?

Create an opportunity to contact the blind girl, and then get to know each other and fall in love with her?

Suppose you are going to follow and investigate someone, what is the best way?

Shouldn't you appear in the closest place to that person and observe?

"The community where the blind girl lives?"

Xiao Yu narrowed his eyes, "Is he so brave?"

He does! .

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