Analyzing this case, everyone has no clue.

The first is to analyze the site.

Almost all the furniture on the site had a similar level of dust, indicating that the home had not been entered for a long time.

The door was open for a few hours, and there was no heating in the house, but it wasn't cold, at least thirteen or fourteen degrees, and it was very damp. If you turn on the heating, you will have to pay at least a few hundred yuan more for four months in winter, and Xiao is not willing to pay this money.

In this kind of residential building, the sealing is better, and it is not too cold even in winter, because there is basically heating all around. But if there is no heating in your house in winter, the house will be very damp, but this is not a big deal for the raunchy Xiao.

There were special footprint experts at the scene, and Wang Huadong also went to the scene to carefully investigate for more than an hour, and everyone came to the same conclusion - this is not the first scene.

What is certain is that the evidence in this room is very well preserved, and it can be said that there are no unnecessary changes. Because there was a thin layer of dust, it was certain that there were only Xiao's own footprints in the room, and no other people's footprints were found even on the outside of the door.

It's the fourth floor, and the windows are tightly sealed without any recent changes.

The poisoning test came out very quickly – cyanide poisoning.

To be exact, cyanide poisoning by inhalation, not edible!

The food has been tested and there is nothing wrong with it.

The clarity of the camera here is still not high enough, but it can be concluded that Xiao took the key to open the door and entered the house by himself, and then less than half an hour later, he opened the door and walked out, and then entered the blind spot of the camera and entered the corridor.

There is no way to tell from the video whether he was poisoned when he came out, but judging from the scene, it should be poisoned after leaving the house. Judging from the video and the time of death, Xiao should have died within an hour of entering the corridor.

So, why did Xiao come out of the house?

After it came out, what happened to the poison, and what happened in the hallway?

Who would do such a thing, and what is the motivation?

There are also people walking in the corridor here, and now you can see the footprints of many people in the corridor, because the windows are closed in winter, there is no wind in the corridor, and the footprints of a few days ago are still there. There are not many people walking in this hallway, and all the people who have walked the stairs during the week and their shoes are being checked one by one.

But there is also a very unfortunate situation, that is, after the first wave of police came, the windows were opened for ventilation for a while, and there were some changes in the corridor.

This is not to blame the police, the police said that they found that the person may still be alive, and the first reaction of the police must be gas poisoning, and it is right to open the window.

It was later found that the person was dead and the windows were closed, but the consequences of the north-westerly wind still have to be considered.

"Where is the interpersonal relationship map of the deceased?" asked the Zhuang detachment.

"I'll take it in a while, this one is not easy to check, it will take time. Zhao detachment said.

"Is it because the interpersonal relationship is too complicated?" said Team Zhou, who was in the first team and the second team, frowned slightly.

"No, it's a little simple, but it's not easy to check, his interpersonal relationships are relatively separated, there are five types of people he knows, and these five types of people don't know each other very well, one is his parents and relatives who have cut off contact, the second is his few friends who have a good relationship, the third is a colleague from the previous intermediary company, the fourth is a few customers, and the fifth is a friend in the game. So far, no one has been found to have such a big grudge against him. Zhao detachment said: "Speaking of which, he had a quarrel with the detention center this morning, saying that the discipline was aimed at him, but it was no longer over." ”

"Where is the source of cyanide, and has there been any progress?" Detachment Zhuang then asked, "Is suicide possible to be ruled out?"

"No, the problem is obvious, that is, the source of cyanide has not been found. If Xiao got a little hydrogen cyanide liquid by himself, and then ran into the corridor and committed suicide by smelling it, it is the only situation that can be explained at present. Detachment Zhao cleaned up the few materials in their hands.

The Zhuang detachment looked at Bai Song, and Bai Song looked directly into the eyes of the Zhuang detachment and shook his head.

Several people from the fifth team, Wang Liang went to check the monitoring, Sun Jie went to cooperate with the autopsy, Wang Huadong went to investigate the scene, Liu Shuyuan was summarizing and summarizing other information, and the clues sent to him were far from enough. Detachment Zhao is right, although suicide is a very nonsense statement, but only suicide can be clearly said.

At the beginning, Sun Mou's suicide case was the hydrogen cyanide used, which is actually quite unstable, and the industrial use is electroplating and mining, and there are few ready-made ones. This thing can spontaneously combust in the air, is highly volatile, and its own state is also unstable, so it cannot be stored for a long time. Even if it is put in a cylinder, it can be stored for about three months at most, otherwise it is easy to explode when used.

Sun's case is very easy to understand, with Zhang Che helping him, this thing is still very easy to get.

So what's going on with this case?

Moreover, Xiao's background is very clear, because he plays games, he basically found out the account of each of his games, and he has nothing else to do over the years, just idle, work as an intermediary, play games after work, occasionally skip work to play games, all kinds of all-nighters...

Can this cause death?

Team Zhao was a little unhappy, just now the Zhuang detachment looked at Bai Song's expression made him a little uncomfortable, but at this time he was also very helpless, because the case was like this.

Because of the proximity to the sea, coupled with the uneven distribution of personnel, many construction sites, and a large number of people from other places, Xingang District has been able to encounter several homicides every year in recent years, which is also normal, but most of them are very simple.

The last time I encountered such a difficult case, the Zhao detachment originally thought it was an example, but I didn't expect to encounter another one.

And there is still a week in 2015, and the 2014 murder case is gone.

The Zhuang detachment looked at Bai Song again, found that Bai Song was expressionless, and said, "I'll report to the leader in a while." ”

Asking for instructions and reporting more is the only rule.

The Zhuang detachment called in front of everyone and explained the situation.

"What's going on with the police who opened the windows at the scene? The Wei Bureau said very clearly on the phone: "Do you have enough manpower over there? If the case is difficult and complicated, you can bring the fifth team over." ”

"I just brought it straight over. The Zhuang detachment said: "The report of the case has not been issued yet, and there is no way to judge the cause of death." ”

"I see, you wait for my news. Wei Ju hung up the phone.

The face of the Zhao detachment was very unsightly, not because the Wei Bureau attached importance to Bai Song, but because the policeman who let the window open write a statement of the situation, which was very troublesome, and this matter could be small or big! In the face of this matter, he did not think about other things at all.