The professional quality of the male protagonist

Obviously, this matter cannot be carried out at the police station, so Zhang Xuan went to the police station when he returned home, packed the materials that had been sorted out before and those of the victim in a plastic bag, and carried them all back home.

The materials of nearly 40 people weighed tens of catties. When Zhang Xuan carried those materials back home, he was already panting and sweating profusely.

Liao Qun, on the other hand, had already prepared the computer and was gearing up.

By the time Li Yancheng came home from work, the two of them were already working in full swing in the living room. With the help of Liao Qun, the progress of the case was much faster. It took them a full day to check all the materials. After confirming, Zhang Xuan and Liao Qun finally turned their attention to a small urban area.

According to Liao Qun's investigation, although the information on these 40 people is widely spread, some of them happened to appear in an urban area.

Zhang Xuan was in charge of the latter matter. He returned to the bureau and found a few people to form a team, and then let them spread out to visit the relatives of the victims and ask them if they knew about this matter?

Nearly half of the responses received said they knew about it, but their impressions were not deep.

After sorting out these materials, Zhang Xuan finally got the answer: Almost 3 years ago, these people had been to this urban area because of work, travel or various accidents.Many people don't remember whether they have been to the supermarket. After all, it has been too long and the person concerned has passed away.

If the starting point of this case is in this urban area, then something must have happened, and it is related to these victims.

Because An Xiang is also related to this matter, he also took the initiative to join the investigation. His investigation direction is different from others. An Xiang mainly collected all the legal information of these victims and began to investigate.

As time went by, Li Yancheng's home basically became the office of these people. Every time Li Yancheng came home, there were some materials everywhere.

At first Li Yancheng didn't want to care about these people, but after he found out that people like Xia Xiaodong and A Man appeared in his room, Li Yancheng began to focus on these people, because the arrival of these people, His house, which had already been messed up by Zhang Xuan and Liao Qun, suddenly became even more chaotic.

Unavoidable, Li Yan intentionally felt an urge to throw all these people out.

But when Liao Qun came to Li Yancheng with his computer in his arms, Li Yancheng finally couldn't bear it and threw all the materials of these people aside, and strictly prohibited these people from approaching his room.

Seeing Li Yancheng open his mouth, the bustling crowd suddenly realized that this place did not seem to be an office.

However, after being interrupted by Li Yancheng, everyone was surprised to find that they had been busy for half a month without any progress.

Zhang Xuan investigated the last case many times, but what he found was basically useless, and the progress here was basically zero. Although those people had been to the urban area, this part of them was only about 1/4 of all the victims. That doesn't mean anything.

Just when the few people were still trying to think of a way, the police station received a new case notice. Someone was murdered in a city next to them.

The circumstances of the case were very similar to the case that Zhang Xuan was currently investigating. A woman who lived alone was also killed.

When the neighbor reported the discovery of the body, the woman had been dead for several days, and the body was already smelly.

The fatal wound was a straightforward stab in the abdomen, the blood flow attracted flying insects, birds and beasts outside the window, the corpse had been pecked, and maggots spread all over the place...

Since Zhang Xuan started to investigate this case, their police station has released all the news related to the serial murder case, so that people in several surrounding urban areas can pay attention, and once there is similar news, it will be passed on to them immediately.

Hearing the news, Zhang Xuan rushed to the local area immediately and checked the scene of the crime. According to Zhang Xuan's judgment, this case is probably one of the serial murders they are investigating now.

Seeing the corpse and seeing this messy scene, Zhang Xuan suddenly felt a little helpless. He had been busy for a long time but found nothing. It was not a good feeling to watch another person being killed in front of him.

Back home, Zhang Xuan told Liao Qun and others about the matter, and most of them had the same expressions on their faces.

But even in the face of failure, Zhang Xuan did not dare to stop, because he knew that the same case might happen again next month.

At the same time, because of the previous case, Zhang Xuan made up his mind to find Li Yancheng. Now the more they investigate, Zhang Xuan is not sure whether this direction is correct.And the new crime scene still didn't find much useful things...

Oman deliberately rushed over, but it didn't help much.

Time waited for no one, Zhang Xuan was going to find Li Yancheng, but Liao Qing who was at the side rushed to Li Yancheng's work place first.

Seeing Liao Qun rushing in, Li Yancheng just looked up at him, then lowered his head and continued to do his own thing.

After a while, Li Yancheng will go out to take pictures again, so he won't be here after a while.

After Liao Qun rushed into the office, he immediately forced the computer in his hand in front of Li Yancheng's face. He asked, "I'm going crazy. Let's see what's going on here?"

Liao Qun is good at data collection and computers, but if he is asked to sort out these messy things, he may not be able to sort out anything.

Liao Qun stuffed everyone's information in front of Li Yancheng, begging Li Yancheng to see something.

"You can go to Fu Ziang," Li Yancheng said. He just waited for the notification from the higher-ups, and he was going to go out to collect photos immediately. He didn't have time to play with them.

"Fu Ziang, who is it?" Liao Qun looked confused, "Anyway, if you have time now, please help me take a look, and I don't know who the person you mentioned is, and I can't trust him."

There are not many cases where people like Liao Qun can surrender their trust, and once they trust, they trust this person with all their heart.

When Liao Qun said this, Li Yancheng couldn't refuse. He looked at Liao Qun for a while, and after thinking about it, he borrowed the computer.

This case is actually not very difficult, the only troublesome place is in these materials, because there are too many people, it has become a difficult thing to sort out the materials now.

And because the places where these cases happened are very widely distributed, Zhang Xuan has no way to look at all the places, coupled with the time limit, and the information of many cases is already very vague.

It is simply a fantasy for the swimming pool to sort out useful things from these materials.

Unless that person is Li Yancheng.

Li Yancheng took Liao Qun's computer and didn't do other things, nor did he ask too many questions, but read all the victim's information recorded in Liao Qun's computer from beginning to end.

There are a total of 42 victims in 42 cases. The only thing these people have in common is that they all live alone.

There are various reasons for being an only child, single or unmarried, but the final result is that they cannot escape being brutally murdered.

Li Yancheng read all the materials, and he found that there was basically no description of the crime scene in these materials.

As a case, the crime scene is naturally the most intuitive way to face the existence of the murderer. If the murderer's thoughts can be seen at the crime scene, if it is only the victim's information but not the information at the scene, even Li Yancheng has no way to see it. Out of too many things.

Liao Qun transferred Li Yancheng's words to Zhang Xuan.So that night, Zhang Xuan brought photos of the crime scene to Li Yancheng.

The photos are from the latest case. They were taken by the police. The pictures taken are relatively complete, and the key points have also been specially taken.

An Xiang had been to the place where the nearest case happened. He was the first person to discover it, and he was most familiar with it. Therefore, An Xiang took Li Yancheng to see it.

When Ma Qingsheng died, his back was leaning against the door, his neck was tangled by the tie on the door and he was hung on the nail behind the door.

Because An Xiang and the others accidentally moved the corpse and stepped on the blood stains on the ground when they entered the door, the scene of the crime could no longer be seen from the beginning.

The crime found that the blood on the scene had been cleaned long ago, but the marks made before were still there, as was the place where the corpse was hung behind the door.

After entering the door, Li Yancheng immediately noticed that except for this place, the rest of the room hadn't changed much.

The clean living room, although not very tidy and clean, is not bad for a single man.

There was a tea table in the living room, on which there were some fruits and some snacks. The victim was near the door when he died, so the bloodstains were only by the door.

In the rest of the place, Oman has done blood tests, and there is no blood in the house except the door and the toilet. The victim was killed at the door at that time.

Moreover, when the victim was hung on the door, the tie around his neck was hung on the nail for hanging clothes behind the door. It's not that easy to take it off.

Li Yancheng closed his eyes and imagined in his mind for a while, what appeared in front of him was the situation of the victim at that time.

At that time, Ma Qingsheng should have been hung with a tie around his neck on a nail behind his back, and then his throat was cut with a knife from the front. A large amount of blood from the damaged aorta spewed out, and he lost too much blood and died.

This method of committing the crime is very fast, and reveals a sense of ruthlessness, the other party's wounding action is also very fast, and it can be seen that it is very sure, and the other party hangs Ma Qingsheng's tie on the nail behind his back , unless the murderer held a gun and forced the other party to not move, otherwise Ma Qingsheng would definitely not be willing to do this by himself.

or……

The other party is a woman.

If it was a woman, if it was Ma Qingsheng who moved his tie while he was having sex with someone, it would not be impossible to kill him with a knife while he was not paying attention.

Li Yancheng went to the balcony and looked down. Ma Qingsheng lived in the community, and there was a small garden under the community, where many children played.

Looking at those children playing and laughing, Li Yancheng's thoughts were still inside the room.

Leaving aside the other cases, this case alone has a lot of doubts.

The first doubt was why the victim let the murderer into the house. Li Yancheng could only think of two reasons for this, that is, the victim was familiar with the other party, or the victim felt that the other party was not a threat at all.

Putting a person who is not harmful to him into the house, people like Ma Qingsheng shouldn't think too much about it.

The murderer, before he shot the murder, the victim didn't even notice the other party's intention to kill, which explained why there was no trace of fighting in Ma Qingsheng's room.

Aman came here before for an inspection, so that although the seniors have been cleaned, judging from the photos, when Ma Qingsheng was killed, he was at the height of a normal man. Ma Qingsheng's throat was cut Sometimes blood spurted out from the main artery and built near the door, and there were bloodstains all over the wall and door.Ma Qingsheng's wound had been checked by Aman before, and his wound was cut very neatly. From the perspective of strength, the opponent should be a very powerful person.

Although the human neck is very fragile, there is also a lot of lean meat on the neck. If you want to cut your throat with a knife, you can't do it without a certain amount of strength.

Although Li Yancheng has never tried to slit other people's throats, as far as he knows, if he wants to slit someone's throat so neatly, he needs at least one slash.

The force that leads to falling from top to bottom will be better, but it is not so easy to cut horizontally.

The moment the throat was cut, the body's major arteries would inevitably spurt out high-pressure blood, and the murderer's body would inevitably be sprayed with blood.

Liancheng carefully inspected the blood on the wall. There was a blank space on the wall. If Li Yancheng's guess is correct, the murderer's height should be about the same as Ma Qingsheng's. The empty blood on the wall should be sprayed on the murderer's face and body. ...

The murderer's hot blood sprayed on his body, felt the blood sprayed on his body, watched the victim gradually lose his life under his hands, watched the victim try to struggle, and tried to cover the blood spraying out with his hands... Everything brings not only excitement, but also the sense of accomplishment and sacredness brought by the deprivation...

And the murderer cleaned up the blood on his body soon after the murder and disappeared from the scene of the crime. The other party obviously had premeditated.

As for the toilet, Aman has checked that the murderer did go back to the toilet to clean his blood after the murder, so there are traces of blood in the sink of the toilet.

However, apart from traces of blood, there are no fingerprints or other things where dna can be found.

But from this point of view, it can be seen that the murderer is very stable in killing, and the fluctuations in his heart may not be very big, so his ability is so calm after killing.

You once walked around the house, An Xiang just followed behind him without disturbing his thinking. A moment later, you suddenly took out the computer with the information that you gave him with the money before, and checked it carefully, An Xiang Walking over to see what Li Yancheng was doing from the back, I saw that Ningcheng kept flipping through the photos of other previous cases.

"Is there anything in the photo?" An Xiang asked.

He has seen the photos countless times. Even though they are bloody and cruel, he has gotten used to them after seeing them too much. But not only he has seen these photos, but Zhang Xuanan and Liao Qun have also seen them, but none of them found anything unusual. place.

Liancheng shook his head when he heard the words, and didn't say anything, but An Xiang seemed to be thinking about something in his clothes, so naturally he didn't bother.

After watching the entire crime scene from beginning to end, Li Yancheng returned to his hometown, Zhang Xuanhe, Liao Qun, and Aman gathered together, hoping to hear some useful news from Li Yancheng's mouth.

"The other party is likely to be a woman, about 1 meters tall. He may enter the door by means of public opinion to ask the victim for help. The victim killed him when the victim sent him away." Li Yancheng said: "Investigate if you have come into contact with these The victim's woman is especially a woman with a child."

"A woman with a child?" As soon as Li Yancheng said this, the other three big men in the five room suddenly screamed strangely.

What is a woman with a child? Did you, Li Yancheng, mean that the murderer had a child with him when he killed? ?

"How is this possible?" An Xiang exclaimed, no matter what, the murderer may not be too cruel, even if he went to kill, how could he bring the child with him? !

No, no, the question now is why Liancheng concluded that the murderer might be a woman with a child.

Oman had already opened his mouth at this time and said: "I didn't find any traces of the child at the scene, and it was such a thing as taking the child to kill..."

No matter how much Aman thinks about it, he is unwilling to believe that there are no parents in the world who take their children to kill people, and where the children have never seen such a posture. Once the children cry and make a scene, won't they be discovered?

Let alone using children as the capital to let the victim open the door...

"The previous witness also said that he bumped into a man, and the witness did not say that the murderer was carrying a child. If the other party was really carrying a child, the witness should be able to see it." Zhang Xuan said, this time Once in the case, a person met the murderer. Although he didn't see the front face, the person claimed that he was a man. He was about the same height as Li Yancheng said, but the other party did not mention children, nor was he a woman.

Li Yancheng didn't speak, but directly dug out a few photos from all the information obtained by Liao Qun before, and put the photos in front of everyone.

There was nothing outstanding about those photos, and several people looked around and didn't see anything unusual.

Among them, they are most familiar with him and have seen him with their own eyes. The scene of Ma Qingsheng's crime scene is a photo of the coffee table in the living room of his house. There is some water on the coffee table, and some plates and cups are still there. There are some candies, but nothing else.

However, there are a lot of things in the second photo. Apart from some small plasticine, there seems to be a lot of tobacco, alcohol, beer, and some peanut shells and strange-smelling soybeans that have not been cleaned up in time.

The first photo of Ma Qingsheng's house looks very clean and tidy, while the second photo is a bit messy. For a single man, the situation of the two of them is not outstanding, so there is nothing to doubt.

Several people looked at the past in turn, but it was a year of confusion, An Xiang seemed a little impatient, "What's so strange about this table, why can't I see it??"

On the other few photos, some are messy and some are neat, but most of them are like this.Normal, that's all I can say.

"It's not that there's anything strange, it's normal, but this table has something extra for a single man." Li Yancheng said, pointing to the tea table on the photo in front of them, he said: "As a single man, don't you think that these people have too many things on their desks? There is also one more thing, which is something that most men's homes will never have."

Everyone looked at the photo attentively. After thinking for a while, it was Liao Qun who finally came to her senses first. She said in a distorted voice, "It's indeed a bit strange, but this doesn't mean that there are children there."

Zhang Xuan was the second person to react. He took the photos off the table and examined them carefully. After reading these two photos, he ran to look at other photos, and sure enough, he found similar things in this photo.

"What are you talking about?" Oman's eyes were full of confusion, he didn't understand what these people were talking about?

"Can't you see it? It's so obvious." Zhang Xuan pointed to the table above the photo. There were many snacks on the place where Zhang Xuan pointed. .

"I even forgot that you already have a wife and children..." Seeing that Aman still didn't understand, Zhang Xuan slapped his head and said: "Generally speaking, it is impossible for a single man to have so many fruits or snacks at home. , Of course, there are no exceptions, and the possibility that these people like to eat snacks cannot be ruled out., But even if a single man likes to eat snacks, it is impossible to have some small toys or plasticine at home. Only children can something to play with."

When Zhang Xuan was talking, he compared all the photos, and at the same time showed the photos to Aman, he said: "Look at the tables in these people's homes, basically every home has some snacks, fruits and other foods There are indeed fewer single women, even single men, but this doesn't mean anything, but if you look carefully at these photos, basically all the photos involve some children's toys. "

After being told by Zhang Xuan, Aman checked carefully, and sure enough, as Li Yancheng said, most of these photos involved some children's toys.

Plasticine, watercolor pens, candies, small cars, and all kinds of toys, it is not surprising that these toys are scattered, even a person like Oman who has lived a free family will not feel that there is anything wrong, but in Li Yancheng In the eyes of single men like An Xiang and Zhang Xuan, they looked very weird.

"If I'm not mistaken, this is the murderer's signature." Li Yancheng said.

Basically, each murderer will have his own signature. Those signatures may be an action or a thing, or a certain detail on the body. something to express.

Before, Zhang Xuan and An Xiang couldn't figure out why the murderer killed people, but after finding this signature, they were close to what the murderer wanted to express.

"Liao Qun, go and find out if there were any cases about children in the entire city of G three years ago." Li Yancheng said.

At this moment, his cell phone rang, and Li Yancheng walked aside to answer the phone. Judging from his appearance, the caller should be someone from the company, and it was very likely that it was the phone that notified him of his business trip.

Inside, Liao Qun immediately moved out of the computer and started typing on it. Liao Qun's speed was very fast. Seeing the pages on the computer switch rapidly, a large row of news search content appeared not long after.

Liao Qun's search scope is the entire city of G. He found about 27 pieces of information on the computer. On average, every piece of information is about the same case.

The case was not too big, and there was only one or two pieces of information about the case, and the rest of the information was only mentioned about it, so Liao Qun's main attention was shifted to the first web page search.

About 3 years ago, a new large supermarket opened in the urban area that Zhang Xuan and the others had found out before. There was a discount on the first day of the supermarket's opening, because there were too many people participating that day, and a pregnant woman was there. Accidentally slipped down the stairs on the way there, resulting in a miscarriage of the child.

Basically, this matter is considered a small matter, and the supermarket was not affected and continued to operate normally.

Liao Qun roughly read the rest of the messages, either they were irrelevant, or they didn't mention the same thing at all.

In terms of time, the case that happened in this supermarket coincides with the case that Liao Qun and Zhang Xuan investigated before, and there is an obvious coincidence in terms of region and time.

The two things happened in the same urban area, and within the same period of time.

But the record shows that this incident was completely an accident at that time, and it was not an incident of being injured.

"I'm going to ask someone to find out who the woman working in the supermarket is." Zhang Xuan immediately took out his mobile phone and called his colleagues who were still in the police station, asking them to help investigate. the detailed passage.