National Forensic Doctor

Team Zhou didn't stop for a moment and went to take Tang Weili back to the police station.

If there is no direct contact with the suspect, the police may consider making an observation. But Tang Weili is the ex-boyfriend of the deceased. This connection is too special, and the suspicion level rises directly to 8 million. If he is not sentenced directly, it is a society governed by the rule of law.

On the other hand, although this murder was not a secret room murder, it is very certain that the murderer carefully planned the murder.

This method of killing is fundamentally different from having the victim stabbed or being sapped in the back of the head.

Suffering from a knife or a sap can be interpreted as a killing of passion. Of course, the court may not necessarily recognize it this way, but during the police investigation, it is enough to act within the terms of the law, and the thinking does not need to be legal thinking.

As a natural person, it is conceivable that even if you carry a knife to meet someone, it does not mean that you must kill the other person. But if you put a bottle of carbon monoxide in your pocket, the nature of murder will definitely increase dramatically.

This thing doesn't take a lot of effort, but it's hard for you to get it.

And since the murderer has planned to this extent, any surveillance conducted by the police will give the murderer an opportunity to eliminate evidence.

Team Zhou even prepared for the possibility that Tang Weili would not give an explanation. After catching the person, they immediately searched Tang Weili's home with a spot survey. At the same time, they also mobilized manpower to search the community where Tang Weili's home was located. The trash cans were all cleaned.

All containers that seemed capable of holding carbon monoxide were rummaged out.

Unfortunately, nothing was gained.

But this time, everyone, including Team Zhou and others, were not in a hurry.

Facing a city with millions of people, it is really difficult to find the murderer. To say that you are looking for a needle in a haystack is a bit too much, but it is also as difficult as catching a wild large yellow croaker.

But if there is already a key suspect, the situation is different.

In particular, the treatment of key suspects with high priority is basically the same as that of targets of the IRS Criminal Investigation Division.

The criminal police first checked Tang Weili's mobile phone, and at the same time checked his bank account and the flow of money. The third team traced his whereabouts, and everything was clearly arranged.

People around Tang Weili were also questioned and investigated in turn...

Not to mention it is a dragnet, but many ordinary people may have never seen the net used by the police. It is like a bayonet, identification, fence, etc. Many technologies did not exist a few years ago, but now they appear all at once. . The police themselves have to study and train, how can outsiders know so much.

As for not using electronic devices... Facts have proved that Tang Weili is really like this. He rode a bicycle from his own community to the community where the victim's home is located.

It's still the theory of wild large yellow croaker. It's very difficult to find it in the sea. Now I'm specifically checking Tang Weili's whereabouts. There is a facial recognition access control at the door of his community.

There are really not many people who go out at 5 o'clock in the morning.

Along the way, there are not all surveillance cameras, but when passing through the checkpoint, the whole face is always photographed.

As for why he went out at five o'clock in the morning, Tang Weili couldn't explain it, but there was still a certain distance between giving up resistance.

In front of the single-sided glass in Changyang City that looked like something from a TV series, Jiang Yuan and others looked at Tang Weili's round face and small round eyes and felt the resilience of Q-bombs.

"I didn't expect this little fat guy to have a pretty good psychological quality." Mu Zhiyang said with emotion: "His own rhetoric is full of holes, and he still insists on saying that he is innocent. He is quite stubborn."

"I'm in business. I've been exposed many times, so I can't do anything." Wang Chuanxing held a pad in his hand, which was full of information.

Mu Zhiyang said: "It's a good life, but I open such a big hot pot restaurant, and I don't know what the motive for killing is? If I had such a big hot pot restaurant, I would get up at five o'clock every morning to cook hot pot."

"The business of the hot pot restaurant is not good, and they are losing money." Wang Chuanxing was reading the latest news, turning the pages, and said: "The turnover of his store is not high, there are more than 30 employees, and the labor cost for a month is More than 100,000, and the rent is about to expire, so his financial situation should be quite bad. Could this be the motive? "

There are three types of criminal motives: desire for money, sexual desire and desire for aggression. The state of the economy is rightfully a focus of attention.

There were seven or eight people in the small room. It was warm and everyone was a little restless, and they started talking about it:

"Unless the victim Yue Ling sells her house, she won't be able to fill the bottomless pit of her ex-boyfriend. Besides, what's the benefit of Tang Weili killing her?"

"Whether this hot pot restaurant was opened before or after the two broke up, will there be any financial disputes?"

“The hot pot restaurant’s secret recipe?”

"This hot pot restaurant is about to close down. The secret recipe is worth a damn."

"Are the two of them secretly dating? The business conditions of the man's hot pot restaurant have deteriorated, and the previous promises cannot be fulfilled?"

Everyone is speculating, and what they say seems to make sense, but there is not enough evidence to support it.

Some people with bad personalities are already pulling out their hair.

If there is a fair point of competition between the police and the criminals, the psychological competition should be ranked first.

When the criminal suspect is in self-doubt and suffering, the police are actually also in self-doubt and suffering.

Looking at the discussion from the perspective of a person in charge can also illustrate a classic truth: reasoning has its uses.

"How is the investigation of the source of carbon monoxide going?" Jiang Yuan interrupted everyone's discussion.

"No news yet." Wang Chuanxing checked and replied.

In fact, he has been thinking about it. As far as his personal thinking mode is concerned, finding evidence is the first thing he needs to consider.

The most important evidence for this case is carbon monoxide.

Carbon monoxide can be produced by itself. Car exhaust or incomplete combustion may produce carbon monoxide. Therefore, in terms of scarcity, carbon monoxide is not worth mentioning. It's even in the air itself.

But the victim's manner of death was acute. As we all know, there are usually three types of death caused by carbon monoxide, namely lightning, acute, and chronic. The latter often takes half an hour to die. A typical example is burning charcoal to commit suicide. Death is very slow. Carbon monoxide is slowly produced and kills people slowly.

To achieve acute death from carbon monoxide, the concentration of carbon monoxide must be high enough and abundant enough. It is difficult for the concentration of carbon monoxide produced by oneself to meet this requirement.

This should have been in the murderer's mind. If it weren't for the high concentration of carbon monoxide, the victim would have opened the door and come out as soon as he realized something was wrong.

Assuming that Tang Weili was the murderer, how did he obtain the high concentration of carbon monoxide?

It’s nothing more than two ways: offline and online.

If you are offline, you can visit relevant stores. If you are online, you can check the sales records.

Online, it is said that one round of investigation has already been carried out, while offline, Team Zhou is still investigating.

Jiang Yuan thought of the past when he went to his family's shop to collect rent. Those shopkeepers who were not doing well were moving around and looking for money to pay. He turned to Wang Chuanxing and said: "Tang Weili is in business, and he may have more than one account. You guys Ask the employees at the hot pot restaurant, especially those in charge of finance, to find out Tang Weili’s other accounts to see if there is any record of purchasing carbon monoxide.”

"All the accounts under Tang Weili's name have been checked... Do you mean that the accounts are not necessarily under his own name? They have also checked several accounts of other people in the store." Wang Chuanxing said while looking for records.

Jiang Yuandao: "Expand further and try your luck."

"Yes." Wang Chuanxing agreed and started making phone calls to arrange personnel. Jiang Yuan said it was just luck, so it would have to be expanded. Now that the case has basically been solved, it can indeed be more arbitrary.

evening.

A group of people from Jiangyuan went to eat mutton noodles in Changyang City.

The mutton soup is the most delicious. Whether it’s mixed with noodles or flour, as long as it doesn’t overpower the flavor, it’s still delicious. In the end, as long as the store owner froths the soup frequently enough and the secret recipe isn’t too weird, it all depends on the performance of the mutton. how's it going.

Sitting in the mutton noodle shop, Yu Wenshu finally found a reason to go home late and said with a smile: "In today's terms, this shop is my treasure store. Sometimes when I go home at night, You have to come and have a bowl of noodles first, and then go back."

Huang Qiangmin clicked his tongue: "It's so delicious, I must try it."

"Well, you can have some cakes. If you have a small appetite, you can just eat meat and drink soup. For example, if a person has a cold, he comes to this shop, slurps down a bowl of soup, blows his nose and blows a lot of it, and he can catch a cold. Half as good." Yu Wenshu highly praised it.

In fact, as long as I don't go home, Yu Wen's books will be delicious.

Huang Qiangmin didn't expose him, he tasted some cakes cooperatively and praised him a few times.

When it was time to go out, Yu Wenshu was still reluctant to leave...

At this moment, a call came to Yu Wenshu's mobile phone.

Yu Wenshu, who was about to go home, looked down at the number and picked up immediately. Without saying a few words, a sincere smile appeared on his face.

After hanging up the phone, Yu Wenshu turned around and said: "The source of carbon monoxide has been found. Under the account of an old employee of a hot pot restaurant, there is a record of online shopping for carbon monoxide. The old employee explained that the account itself was registered with the help of Tang Weili, and he usually controls it. In Tang Weili’s hands!”

When he said this, Jiang Yuan and others also became happy.

Yu Wenshu waved his hand: "I have to go back and take a look. You should rest first, especially Jiang Yuan, and make sure you get enough sleep. Okay, I will go back to the police station first to see the specific situation, and you will hear the results tomorrow. …”

Looking at the back of Yu Wenshu returning excitedly, Huang Qiangmin thought thoughtfully: "He deserves to be the detachment leader."

Liu Wenkai said quietly: "Marriage makes people grow..."