"It is not uncommon for a person to have two or more ID cards. For example, in the Shaanxi "Fang Jie" incident in 2013, the criminal had 4 household registrations and corresponding identity information. Wang's mother and son were 'professional counterfeiters'

', before computers were widely popularized, it was indeed possible to apply for multiple pieces of identity information by making various fake birth certificates and birth certificates." Ma Hongwen looked back from the projection screen and said: "We have done this before.

According to one case, the criminal also had two ID cards, but his two ID cards were not applied for maliciously, but because his parents divorced in his early years, and his biological mother took him across provinces to remarry. His biological father and stepfather each had an identity card under their household registration books.

The certificates and surnames are different. In addition, due to historical policy reasons, some pregnant women returned to their parents' homes in other places to avoid family planning. After the child was born, the parents applied for household registration for the infant and child in different places without communication.

Information, there will also be situations in which the same person has two different ID cards in the future."

Ma Hongwen thought for a while and added: "Whether the Wang brothers, or rather Li Haidong, applied for multiple identity documents intentionally or unintentionally, we cannot yet determine. Of course, we also suspect that Li Haidong and the Wang brothers are not at all our speculation analysis

That means they have nothing to do with each other and are different people. But the people in the photos on the ID cards look exactly the same. How to explain this? There is only a 7-day difference between the validity period and the validity period. In an era when computers were not yet popular, Wang

Fang took the Wang brothers with their left foot to apply for ID cards at the Yanshan branch, and then went to the Sanqing branch with their right foot to apply for one. After that, multiple ID cards were replaced on schedule. This possibility is entirely possible."

"In other words, the method of confirming that Li Haidong is one of the Wang brothers through ID number comparison is not feasible." Director Liu thought for a moment and then asked: "Building 17 of Harmony Community, if it is Wang Fang's counterfeiting den,

, and was later inherited by Li Haidong, so why are there no fingerprints of Wang Fang in the den? Or is it that Li Haidong's 'dermatoglyphosis' is inherited from Wang Fang, or that Wang Fang's ID card was also applied for before 2012, and

It’s still within the validity period, so Wang Fang’s identity information has not been entered with fingerprints?”

Ma Hongwen motioned to Xiang Juan to continue.

"As Director Liu said, Wang Fang's ID card is still valid, and her identity information does not have fingerprints entered." Xiang Juan pointed to the screenshot of Wang Fang's identity information on the screen and said.

Everyone’s attention was once again focused on the screen projection, and they saw that the validity period on the screenshot was “2011.4.15 to 2021.4.15”, which was exactly the same as the validity period of the Wang brothers’ ID cards. It seemed that the mother and son had to change their ID cards on the same day.

Received ID card.

"In addition, through comparative analysis, the fingerprints we extracted in Building 17 should belong to two people, and judging from the thickness, they should also be a man and a woman. In other words, it is possible that these fingerprints belong to Li Haidong and Wang Fang

Larger. However, there are no fingerprints in the fingerprints of the two people. The possibility that Wang Fang also has 'dermatoglyphic disease' mentioned by Director Liu is indeed true. However, Li Haidong's 'dermatoglyphic disease' may also be inherited from the father's line, which means that Wang Fang also has 'dermatoglyphic disease'.

Fang may also have fingerprints."

"According to the latest autopsy results, nitrocellulose was found in the 'soup' where the head and hands of the deceased were boiled. This chemical substance is not only used in the production of various celluloids, film films, nitrocellulose paints, and explosives, etc.

On the other hand, it is an indispensable component of nail polish. In other words, Wang Fang should have the habit of applying nail polish, but whether her nail polish is applied on her nails or on the inside of her fingers to cover fingerprints cannot be determined

Sure. If she had fingerprints and applied nail polish on the inside of her fingers, then it would make perfect sense that she would only leave fingerprints but no fingerprints in Building 17," Xiang Juan said.

The conference room fell into a brief silence.

Li Zhudao's hypothesis made the investigation of the case seem to have made very important progress, but along with it, more and more difficulties and doubts were encountered.

Director Liu said unhurriedly: "In other words, since the deceased did not leave any fingerprint traces in Room 1304, and Wang Fang also lacks fingerprint samples, we want to confirm the method and purpose of confirming that the deceased is Wang Fang through fingerprint comparison.

It’s also impossible to achieve.”

Director Liu thought about it carefully and said: "I have a few questions. According to the clues, since Li Haidong has 'dermatoglyphic disease', he does not have fingerprints. It is assumed that Wang Fang also has 'dermatoglyphic disease', or she has

The habit of applying nail polish on the inside of one's fingers. After all, judging from the previous clues, it is very possible that the mother and son developed this habit of covering their fingerprints out of illegal activities, that is, the need to produce and sell fake IDs.

The question is, since Li Haidong and Wang Fang already have the conditions not to leave fingerprint traces, why did Li Haidong need to clean fingerprints in Room 1304? Isn't this unnecessary?"

"Li Zhudao, tell me." Case analysis is not Xiangjuan's business scope, nor is she good at it. Ma Hongwen immediately named someone who is good at this to answer. Liu Jinsong has few opportunities to go to the front line to listen to case reports in person, so Ma Hongwen

Deliberately let the young people of the detachment seize the opportunity to perform.

"There are two possibilities for this situation. One is that Li Haidong did not know that he or the deceased had 'dermatoglyphic disease'. According to the doctor, the symptoms of 'dermatoglyphic disease' are not obvious. For ordinary people, due to the use of

If you need to set up a fingerprint lock screen on your smartphone, you may find that you don't have a fingerprint. But Li Haidong is not an ordinary person. The technical team tested his phone and found that it was not a smartphone at all, but an 'elderly machine' that required key input. Also

That is to say, while the symptoms of 'dermatoglyphism' are not obvious and Li Haidong has no need to use fingerprints in his daily life, it is very likely that he does not know that he has 'dermatoglyphic disease'. In this case

, he most likely did not know whether the deceased suffered from 'dermatoglyphism'. Based on this, while not sure whether the deceased had entered his fingerprints into his identity information, he simply boiled the deceased's palms to completely eliminate the deceased's fingerprints.

In order to cut off the way for us to screen out the identity of the deceased from the household registration system through fingerprint comparison."

"As for the deceased smearing nail polish on the inside of his fingers, let's assume that is the case. Judging from Li Haidong's travel patterns, he always leaves early and comes back late, and he and the deceased have a mother-son relationship and do not live in the same room.

In terms of time and space, it is more likely that the deceased would have been missed applying nail polish to the inside of his fingers. Therefore, in this case, Li Haidong would consider it necessary to remove the fingerprints in Room 1304. Of course, he himself would

I didn’t realize that this move was completely unnecessary.”

"Another possibility is that in addition to Li Haidong and the deceased, room 1304 may have left fingerprints of other people. This other person may be one or multiple. And Li Haidong's move to remove fingerprints is very likely

They don't want us to know who this 'other person' is. As for the specific reason, we don't know for the time being, and we don't know whether this 'other person' is related to the murder. According to the feedback from comrades in the information group

, the monitoring equipment of the community had a malfunction repair during the month when Li Haidong lived in Room 1304, that is, on October 2. The monitoring equipment for this maintenance happened to be at the elevator entrance and elevator of the unit building where Li Haidong lived.

Although the repair time is not long, less than half a day, this half day is enough for 'other people' to go in and out of Room 1304, and have a cup of tea, have a meal and so on. Of course, are there any other people?

'Having entered Room 1304, we don't know whether the failure of the monitoring equipment this time was caused by human factors or whether it was caused by the equipment itself."

Liu Jie looked serious and noncommittal, saying: "After identification, the deceased and the suspect were in a mother-son relationship. Why did the suspect lie in the WeChat group that the deceased was his girlfriend?"

"There are three possibilities. First, Li Haidong wants to reduce his guilt through this self-deception. Compared with killing his biological mother and killing his 'girlfriend', the latter may make Li Haidong psychologically depressed.

and more ethically acceptable. Secondly, Li Haidong destroyed the face and fingerprints of the deceased in order to conceal the identity of the deceased, and his statement in the WeChat group was to create a false impression for us and mislead our investigation.

Or closing the case, in order to further achieve his purpose of concealing the identity of the deceased. As long as Li Haidong achieves one purpose, he will in turn reach the first possibility. Third... what Li Haidong said... may be the truth... that is to say

, the deceased is both his and his... that. After all, Li Haidong's various behaviors have exceeded the bottom line of social morality and ethics. Of course, this is only a possibility, not necessarily a fact." Li Zhudao stuttered at the end.

Baba, because even he himself found this hypothesis...unspeakable.

Sure enough, the conference room that could hear the drop of a needle was immediately filled with brief whispers, and all kinds of incredible boos and exclamations.

Xiao Wu covered her mouth and nose with her hands. It could be seen that she was very sick at this moment and wanted to vomit.

Old Liu looked gloomy and shook his head. He didn't know whether he thought this possibility was unlikely, or whether he felt it was hard to accept in his heart.

"What a sin..." Ouyang frowned and muttered to himself.

While chewing gum, Xiao Wang cursed an easy-to-understand Chinese quintessence. Peng Jie was much more gentle and said lightly: "It's his mother's fault."

Captain Ma coughed heavily, and after everyone calmed down, he said: "There are cases like this. For example, there was a family case of 38 people in Australia a few years ago. As criminal investigators, we are responsible for all cases.
Chapter completed!