Chen Jiu, who returned again, of course, did not go to the scene of the murder.

It's to catch the murderer.

"I don't know what this man's abilities are." Chen Jiu muttered to himself.

Judging from the scene of the murder, the murderer used very conventional killing methods, killing people, and then bloodletting, and the question is what means the other party used to transfer the victim to the villa.

And on the way, avoid all the sight of surveillance.

After arriving at the community, Chen Jiu began to study the topography of the community.

As one of the top five residential areas in the city, the security of this community is actually very good to some extent, at least it is better than the old apartment where Chen Jiu is located, I don't know how many times.

"Did you climb over the wall to get in?" Chen Jiu glanced at the exterior wall of the community.

The whole community is surrounded by a nearly two-meter-high exterior wall, and on top of the exterior wall, there is also a layer of broken glass, and if you want to climb over it, you have to bring two corpses, unless the murderer himself has super physical fitness.

So Zhang Xue didn't think about this at all when they were investigating the case.

However, Chen Jiu didn't let this go, after all, the other party was likely to be the same fear gamer as him.

Subsequently, Chen Jiu found a blind spot in the community, kicked the wall with his right foot, and easily climbed to the outer wall of the community with the help of his fingers through the gap in the edge of the wall.

There aren't many people in this neighborhood who come here, but in order to avoid being seen by accident, the old man still covers his head with the hood of his sweatshirt.

If you want to catch the murderer, you must first understand the psychological dynamics of the murderer, although most of the evidence has been collected by the police, but there are some "special" evidence, which may not be able to be found by the police.

Chen Jiu looked carefully at the top of the wall, if the other party climbed in from the outer wall as he guessed, then there would definitely be some subtle traces left on the outer wall.

Ordinary people may not be able to find out.

But after his five senses have been greatly strengthened, he may be more likely to find traces than the professional technical team.

"It seems to be a little less dusty here than it is elsewhere." Chen Jiu looked at the top of the wall, and muttered in a blank space the size of a few fingers.

It is almost certain that the other party climbed in from this place, unless there is anyone else in this community who does not climb over the wall at the main gate like Chen Jiu.

After confirming his own guesses.

Chen Jiu climbed down from the wall.

After roughly estimating the distance, he began to choose a route on the condition that he avoid all surveillance.

It's not too far from the fence to the building where the victim is located, and it takes less than two minutes to walk straight through, but if you want to avoid surveillance, you have to cross the lawn.

If the footprints are to be traced after so many days, it is naturally impossible to find them.

So Chen Jiu didn't look at the traces on the lawn, and walked directly to the victim's downstairs, and then began to climb along the outside of the air conditioner.

Probably when he climbed to the position of the third layer, Chen Jiu noticed some anomalies.

On top of the air conditioner on this level, there are some traces of dirt, and there are even traces of blood on the window.

"I've finally caught your little feet." Chen Jiu grinned.

As for how the murderer avoided all surveillance, there was finally a conclusion that the other party climbed directly from the first floor to the seventh floor where the victim was located through the space of the air-conditioned outdoor unit.

But even so, Chen Jiu still admired the murderer's physical strength a little.

Climbing down from the seventh floor with two people is not something that can be done by strengthening a few points of physical strength.

Now that he knows the murderer's criminal path, the next thing is easier to do, he only needs to look at the seven-day surveillance outside the wall to find the murderer.

"There's a supermarket on the perimeter of the fence, and the surveillance there can probably see him passing by." Chen Jiu took out his mobile phone and began to search for the surveillance equipment used by several stores outside the wall.

It's worth mentioning that, thanks to a free antivirus manufacturer, it's now extremely easy to check cameras in some public areas.

Chen Jiu only needs to log in to the background of a camera, and he can easily view the monitoring of these nearby cameras.

The next moment, Chen Jiu's mobile phone began to play rapidly, and the monitoring in the vicinity for seven days.

Since the murderer had to carry the relationship between the two people and climb the outer wall, Chen Jiu guessed that the other party's action time should be between 12 a.m. and 4 a.m., when there was no one in the morning.

When the surveillance turned to four o'clock in the morning three days ago.

Chen Jiu saw a figure flashing in the picture.

"Sanitation worker?" Chen Jiu frowned, he thought that the other party would be like him, wearing a black dress to commit the crime.

I didn't expect the other party to be wearing a sanitation worker's uniform.

But I have to praise that the murderer's trick is very good, at four o'clock in the morning, no matter what kind of clothes a person wears, walking on the street will look a little strange and conspicuous.

And only sanitation workers are the only ones who are almost everyone, and they will not be impressed when they see them.

Imagine, at four o'clock in the morning, a person wearing a sanitation worker's uniform and carrying a big black bag suddenly appeared on the street, would you take a closer look?

No!

Even if Chen Jiu is not determined to have a goal, it is possible to ignore this point.

This profession, which is common everywhere, has an inherently diminishing effect on people's attention and senses, so even if he swaggers down the street, no one notices.

As if the other party also dodged some important cameras, then the other party is invisible in the city.

After locking the target, the next work is just to continue to check the surveillance video one by one, Chen Jiu walked all the way, tracking the murderer three days ago along the surveillance route.

Until the other party got into a garbage truck.

"Really a sanitation worker?" Chen Jiu was a little surprised.

He thought that the other party was just trying to disguise his identity, so he specially dressed up like this, but he didn't expect that the other party's profession was like this.

But things have come to this point.

Chen Jiu didn't continue to look at the monitoring anymore.

Don't think about it, this car will definitely drive directly to the Lingshan villa area, and on the way, no one will wonder why a garbage truck drove there.

After all, compared to the city center, those rich people who live in villas are less likely to care why there is a garbage truck.

So the next step is to find the location of the car and find the specific location of the murderer.

However, in order to save trouble, Chen Jiu directly dialed the number of Liu Qianyang of the Special Affairs Bureau.

"Hey, give you a license plate number and help me find the location of this car."