According to the fingerprints of the deceased, no relevant records were found, indicating that this is a person with no criminal record, after comparison, the hidden half of the fingerprints found at the scene did not belong to the deceased, and no one went to the various public security bureaus and police stations in City A to report the disappearance, and there was no abandoned vehicle around the crime scene, which could be used to confirm the identity of the user according to its relevant registration. Not to mention this, it is not even possible to confirm whether the deceased is the tenant who pretended to be named "Li Jiawei".

So if you want to find clues to confirm the identity of the deceased, you have to start from the line of witnesses, after all, the crime scene is surrounded by a residential area, although the scale is not very large, because of the age, so the number of residents who still live there is not very many, but after all, this is also a feasible plan, in case someone happens to see something, needless to say, the identity of the deceased is locked all at once, even if it can clarify a range, it is also very helpful, So Dai Xu and Fang Yuan took the copy of the ID card they got from the landlord and began to investigate and visit the residential area, this work is very laborious, and it can't be regarded as a smart method, but there is no better choice at the moment.

So Dai Xu, Fang Yuan, and the others spent three whole days knocking on the door of almost every house in the old residential area, not to mention breaking their legs and wearing out their mouths, but they were not too much worse, and they were exhausted every day. But with little effect, the residents of the neighborhood are otherwise elderly people who spend most of their time at home. Either migrant workers or migrants who come to rent a house, many of them are either not at home during the day, or they are not willing to be questioned and help provide clues, but they have to ask Dai Xu about the situation in turn, trying to find out what is going on. So that the police need to go door-to-door to visit and question.

There are as many warm-hearted and helpful people in this world as there are self-cleaning snow. People who don't care about themselves, after three days, not only Dai Xu and Fang Yuan have been working in vain, but others are the same. They have gathered some information around the bush. It's just that when I put it together for such a comparison, I found that something was wrong, some people said it looked like this, some people said it looked like that, and when they were merged, they were full of loopholes, and they couldn't fit anywhere, and after thinking about it carefully, they soon found traces of fabrication. This made everyone feel a little depressed, even though they knew that those who were in trouble gave them false clues. may be the starting point in the final analysis is nothing more than a mischievous mentality, but for Dai Xu, even if they are empty-handed and have no gain, it is better than this kind of empty joy, and it is also thanks to those few people who make up nonsense and talk about it, and the things they make up have loopholes that are not difficult to find, otherwise they will really be misled in the direction of the investigation, and it will be even more difficult to do, and it will waste more manpower, energy and time.

Since the witnesses have no way to open the situation from the surrounding residents for the time being, they can only try to find out if there are any surveillance cameras that are still in use in the surrounding area, whether it is a public facility or the private equipment of any nearby businesses and shops, as long as it is within the effective range, you can try to collect surveillance footage to see if there are any valuable pictures that can help solve the case.

However, the area is so deserted that there is no effective surveillance equipment in the surrounding area, and there is not even a single traffic camera on the main road separated by a fence from the residential area.

As a result, after four or five days of busyness, the investigation finally reached an impasse, and there was no progress on the identity of the deceased, and even the direction of the investigation was lost, and there was no way to start.

This situation makes everyone feel at a loss, and now it is known that the scene of the crime where the deceased was found, the renter is a young man with a pseudonym "Li Jiawei", and this "Li Jiawei" has no obvious physical characteristics, the landlord and his wife did not have the opportunity to understand clearly, and the surrounding neighbors have no concept of this "Li Jiawei", except that the landlord can confirm that the "Li Jiawei" who contacted and dealt with them is very consistent with the photo on the copy of the ID card. There are no other clues.

So whether this "Li Jiawei" is the deceased himself, or is it related to the murderer in some way, or is it the murderer himself at all, what is his true identity, and who is his surname, these are not known for the time being, not only Dai Xu and Fang Yuan were puzzled, and they had several meetings, and everyone brainstormed to study this matter together, and they couldn't say why, although anyone could put forward several possibilities, but after all, they were all hypotheses, and there was no substantial evidence to prove it. So naturally none of them can be established.

But such a big case, you can't just hang there and ignore it because you don't know where to start, ignore it, and let it become a dead case. According to the analysis of the reasons for the formation of footprints at the scene, everyone agreed that the person who left the footprints in the hurry was most likely the reporter who called the police anonymously, so since there is no gain for the time being between "Li Jiawei" and the deceased, it is also a good plan to start with the reporter who made an anonymous phone call to report the case, although according to the previous analysis, they all think that Dai Xu's conclusion has a greater chance of being true. That is, the informant may have inadvertently found that the entrance door to the scene of the crime was not closed tightly, and it did not look like someone was in the room, so he took the opportunity to sneak in and wanted to take the sheep by the hand, but he did not expect to suddenly find the body, and he hurriedly fled the scene in a panic, but in addition to this most likely hypothesis, it cannot be ruled out that the informant may have known the deceased or the renter "Li Jiawei". So I came to him, and even came to an appointment, but as soon as I entered the door. Soon found out that something was wrong, and fled in a hurry, and was afraid of causing unnecessary trouble to himself, so he chose to call the police by calling an anonymous phone number and hiding his identity.

If this second possibility can be established, then determining the identity of the informant will be of great significance to Dai Xu and his solution to the case. At least you can learn some information about "Li Jiawei" through the informant, which can be used to determine whether this "Li Jiawei" is the murderer or the deceased.

In order to find out the identity of the informant, there are two ways for Dai Xu to obtain information. The first is the messy footprints at the scene, and the second is the anonymous phone call.

First of all, of course, it is necessary to start in the most convenient and objective way. According to the analysis and identification of the footprints extracted from the scene by the colleagues on the criminal technology side, such a conclusion was reached.

First of all, based on the size of the footprint, it can be deduced that this is a height of about 170 cm to 175 cm. From the shape of the shoe print, it is inferred that the gender of this person should be male. The shape of the shoes is relatively narrow, combined with the weight of the marks left on the ground, it can be inferred that the man not only has thin feet, but also the whole person's figure should be a relatively thin type. Therefore, the final conclusion is that the person is on the thin side. Men who are about 1.7 to 175 meters tall are about 20 to 25 years old. Other, more specific personal physical characteristics are not something that a few shoe prints can provide.

Being able to come to such a conclusion is already very rewarding for Dai Xu, and the rest is naturally pinned on the second way to lock up the informant - anonymous phone call.

The anonymous phone was found to be from an IC card public phone that was still in use, according to the number of the phone, it is not difficult to lock the location of the phone, Fang Yuan according to the caller number of the IC card public phone when it called, through the assistance of the relevant communication company, quickly locked the location of this phone, and found that this public phone is located far away from the scene of the crime, let alone walking, even if it is a car, the traffic is good, and there is no traffic jam. It may take more than 20 minutes to get there, and if you take public transportation, it may involve a transfer, which takes even more time.

It can be seen that this informant is really careful enough, in order not to be discovered by others, he did not hesitate to go so far away before calling the public security bureau to call the police, and according to Fang Yuan's emotion, it is really difficult for this informant, how does he know where there is an IC card public phone that can be used in City A?

It is precisely for this reason that Fang Yuan subjectively believes that this informant may be a native of City A, even if he is not a native of City A, at least he should have worked and lived in City A for a certain number of years, so he is more familiar with City A, whether it is the route or some infrastructure, he has a concept of such a person.

After all, as a native of City A, except for a few years in college, Fang Yuan had hardly left the boundaries of City A, but now if someone asked her about some routes and where some facilities were in City A, she might not be able to say, after all, she was just an ordinary student in City A in the past, her life content was relatively simple, and her range of activities was relatively limited, so she was not so familiar with her original life circle.

Therefore, if this informant is really a native of City A, he should also be a person who has a wide range of activities for some reason, so he will be so familiar with many small things.

Determined the location of the IC card public phone, Dai Xu and Fang Yuan set off again, and drove there directly, not to mention, although this public phone is inconspicuous, but the location is not remote at all, located on the side of the main street of a city, but because of urban planning, city renovation and so on, the phone booth of this phone is enclosed in a green space on the side of the sidewalk, and there is a tree next to it, if you don't look carefully, it is really not easy to be noticed, this street is also regarded as a crowd of people, When Dai Xu and Fang Yuan arrived there, it was close to noon, and the road was also full of traffic, so it was not lively, many cars were whizzing by, in order not to be stopped by the red light, it could almost be said that there was no intention of slowing down, and most of the pedestrians were in a hurry, and few people paid attention to the public telephone that was half-hidden by small trees.

Dai Xu and Fang Yuan stood near the public telephone, observed the surrounding environment, and found that a traffic surveillance camera at the intersection not far away happened to be able to include this phone booth in the shooting range, and there was also a surveillance camera hanging next to the gate of an office building across the road, so Dai Xu and Fang Yuan first found the security person in charge of the opposite office building, and after explaining their identity and intentions, the security person in charge agreed to retrieve the surveillance video for them, but unfortunately because this intersection is a downhill location, The office building on the other side of the road is a little lower than the geographical location on the other side of the road, and the camera installation is not high, just next to the door frame, although the surveillance video is called out, but because of the problem of shooting angle, in addition to the vehicles and pedestrians coming and going in front of the door, it is not possible to see the public telephone booth on the other side of the road, which is completely blocked by the vehicles coming and going on the street. But I can only see from the endless stream of cars, and I vaguely see that someone seems to have stopped on the other side of the road, not to mention that I can see the appearance clearly, and I am reluctant to even see whether it is a man or a woman.

In this case, it can only give up the surveillance screen on the side of the office building, after Dai Xu and Fang Yuan expressed their gratitude, they did not delay any longer, and went directly to the brother unit in charge of this section of the road, and retrieved the surveillance video taken by the camera that can shoot the public phone, although this surveillance camera is far away from the public phone booth, even if the picture can be cut larger, it is still limited after all, but other than that, they have no better options. (To be continued.) )