Speaking of this, I looked at him and smiled: "The so-called blind spots are the most easily ignored places in the subjective consciousness of human beings, so often the most critical details always need to be easily noticed. Pen ~ fun ~ Ge www.biquge.info For example, let me be sure that the bank robbery must have been related to the details of those later cases, and when I checked that case later, I found that no one had carefully checked the murder weapon. ”

"Impossible." Li Jing retorted, "The murder weapon should be the first piece of evidence sampled from the prayer flag, which contains the DNA of the suspect, the victim, and even the geographical profile information of the suspect can be judged from other attachments extracted from the murder weapon." I think the police must have done a thorough examination of the murder weapon, but I'm curious, what new information have you found? ”

I shook my head and said, "It's not a new discovery, but a clue that the police have found but haven't traced - the source of the murder weapon." Although it was clearly written in the investigation materials at the time that the murder weapon belonged to another mountain city to produce a shotgun, and the bullet that killed the victim also came from the same factory, what they did not notice was that before the subsequent series of events, the murder weapon left by the suspect at the scene of the bank robbery also came from that city. Although it was not produced by the same functional factory, I have seen a small sample analysis of the metal parts of the two murder weapons, and I can almost confirm that the metal composition used in the two murder weapons is almost the same, and it is made from the smelting of iron ore, a local specialty. Because the local iron ore is relatively high in titanium, the analysis of the murder weapon samples does confirm that there is a connection between the bank robberies and the serial murders that followed. However, if we only mention the origin of the murder weapon, we can only prove that the suspects in the two cases came from the same place, and cannot prove that there is a direct connection between the two types of cases. ”

Li Jing tilted his head to look at me, his eyes curled into a beautiful arc: "But you also found other connections between the two, didn't you?" ”

I nodded: "That's right, do you remember that I said that the suspect was in the bank robbery, because he was a new hand, and left direct evidence such as fingerprints and footprints at the scene?" ”

Li Jing nodded and motioned to me, he remembered.

After that, I let out a long sigh of relief and said: "Actually, the police visited the factory that made the shotgun later, and when they wanted to know more about the situation, they found that the shotgun factory had reported that seven guns had been lost a year before the incident. Ah, forgot to mention, because it was close to the border, so there was a militia there a long time ago, so it was legal to produce and use shotguns there, but later, probably 20 years ago, because the situation on the border gradually stabilized, slowly the militia was disbanded, and everyone's shotguns were taken back. However, the bullets, because it is easier to hide privately, so few people turn in all of them, after all, the guns have been recovered, and the bullets are not guns or anything, and they cannot be used, and the local people in charge of this matter will turn a blind eye and pass. However, hunting has been preserved as a characteristic local tradition, and the production of hunting rifles has not been banned. In fact, in many local places, for example, the security of some units or something, the guns are also produced by the shotgun factory. ”

"Were the seven guns stolen on the same day?" Li Jing interrupted my introduction and asked.

I shook my head: "No. You didn't listen to me just now, because the previous militia culture made them not particularly strict about coercive management. It takes almost a week or so for them to recheck their inventory, and some cycles last longer. ”

"So you're not sure when you lost those weapons?" Li Jing asked.

"That's right." I nodded, "So when they found out that a weapon was missing, they immediately went door-to-door to inspect it, but nothing came of it." I even searched some of the more secluded places in the mountains, I mean even rummaging through the village and not finding the missing guns. In the end, they can only think that someone has stolen it and taken it away, and the only thing that is certain is that the person who stole the gun is someone who is familiar with the factory, and even we may have been workers who used to work there. Because the factory will let the dog go to the yard after work, unless it is someone who knows it, if a stranger enters the yard, the dog will definitely be found and warned. However, during that time, the people who lived around the factory did not hear the continuous barking of dogs for a long time at night, which shows that the people who entered the factory to steal the guns at that time were not only familiar with the situation in the factory, but also quite familiar with these police dogs, so they did not cause a warning from the dogs when they entered the factory to steal. ”

"Did the suspect leave any evidence when he was forcibly stolen?" Li Jing's eyes lit up when he asked this question.

I didn't know whether to nod or shake my head with some distress: "At that time, people's concept of protecting the scene was not very strong, and when I found that there were fewer guns, I used to look for a long time at the scene, and only called the police when I was sure that it was missing or lost." At that time, because the scene had been destroyed, the footprints were basically mutilated and incomplete, and it was impossible to collect evidence. The cash register also has multiple layers of coverage. According to the technology at the time, it was impossible to separate these fingerprints for evidence alone, and you know that because the previous rummaging basically destroyed the integrity of these fingerprints, even if the photos were taken at the time, it is now somewhat difficult to extract the complete fingerprints from these photos in the suspect's exporting country. However, when I checked this theft a few days ago, I still found that there were fingerprints left, but they have not been compared with the bank robbery I said, but if you accept this case, you can go and compare the fingerprints to verify how correct my speculation is. "I was a little proud of this, and I could say that I had come to him from the beginning with the idea that I must be right. That's why I was confident enough to let him verify the fingerprints in the two cases.

Li Jing nodded and agreed to my request, and then he frowned and asked me: "If according to the speculation of people at the time, the person who stole the gun may be an internal ghost, and if anyone is found, it is indeed very likely that the employee who is familiar with the factory environment stole the gun and flew away, but at that time there were employees in the factory who left?" ”

I nodded: "Yes, at that time, because of the disbandment of the militia, the demand for guns was not as great as before, so the gun factory fired some people at that time, because the people in that area were basically hunting and farming, so if they wanted to find a new job, they had to go out to work." So the suspicion fell on the original factory workers who went out to work, but because some of them had not returned to their hometowns for many years and gradually lost contact, and some of them had found and had a clear alibi, so whether it was the police or the local person in charge of investigating the loss of guns, no one could find a suspect. If they had been able to link all the cases that had taken place at the time, they would have easily been able to find the suspects if they had not limited themselves to the guns used in the subsequent serial robbery and murder cases. It was also because I read some more materials at the time and connected them that I found that the traces left by the murderer in the bank robbery case have key pointing evidence for all the subsequent cases. ”

Li Jing suddenly raised his eyelids and asked me in a very serious tone, "Are you sure which fingerprints and footprints once belonged to the people who worked in the gun factory?" ”

I couldn't stand him looking at me so seriously, but I understood what he was worried about, so I straightened my face and said, "I'm sure the person who left the handprint is inseparable from the employees in that factory." ”

"Huh?" Li Jing made an unknown voice, "Aren't they employees of their factory?" ”

"I can't guarantee this, after all, I can't find the employee files of the year. I only know that there was a criminal who used a knife to rob a bank and accidentally scratched himself, leaving a bloody handprint, and the bloody DNA on it matched 50% with the DNA of a local retired worker. I thought about the scene at that time, "You know, in fact, Xiaozhi usually takes on some small jobs because of the needs of the task or the need for money, such as being a private detective or something, mainly to do some marital cheating or helping people do paternity tests or something, I used to think that these are a bit unauthentic." ”

"It's not that it's inauthentic, it's immoral." Li Jing gave me a blank look, "You found the suspect's relatives when you were helping someone else do a paternity test. ”

I really didn't have the slightest reason to refute Li Jing's criticism, but I was a little embarrassed by being poked at the center, I looked away, looked at the empty dining table next to me and said, "Well, that's true." At that time, an aunt in her fifties suddenly approached us and asked if we could help her secretly do a paternity test, and she suspected that her husband had an illegitimate child outside. This kind of thing is not difficult for us, and we will do it. When my aunt showed us a picture of what she thought was her husband's illegitimate child outside, I suddenly felt that the person in the photo was familiar, but I didn't think much of it. Stalking someone and taking their hair without a sound was a breeze for me, and it was a coincidence that he went to a café to buy a mocha and drank it while walking, and then he threw the mocha in the rubbish bin on the side of the road, and I took a picture of him, and then cut out the paper cup he threw away, and brought it back to the client, which was enough to do a paternity test. Because I was afraid of being paid, for example, in order to repay the debt or be dissatisfied with the results and lie that no DNA was detected, I also specially kept a copy of the proof, and when the client really went back on his word, he would take out the proof to refute it. It is precisely because I have more eyes that I am more convinced of my own inference.

The smell of noodles wafted from the back kitchen, and Li Jing asked for a crab roe soup dumpling and two Huangqiao baked cakes sticking to glutinous rice flour. The boss brought us another boiled dried shredded. "The boiled dried shreds, which are very famous in Yangzhou City, are warmer and more delicate than the simple cold salad, which can be regarded as a meeting gift for you." After the boss finished speaking, he returned to the back kitchen, and then broke a pot of tea for us, "I see that you can't finish talking for a while, just chat slowly with me, it will take more than 1 hour for my business to be on fire here, you don't have to worry." ”

Seeing that the boss returned to the back kitchen, and when there were only the two of us left in the restaurant, Li Jing asked me while sucking the hot soup in the soup bag, "Have you read the DNA results?" ”

"I had someone help me extract some of the DNA that I had taken directly from a cotton swab on a coffee cup, and the results were shocking." I deliberately didn't say the second half of the sentence to get Li Jing's attention, I felt that he was so obsessed with the food in front of him that I even wondered if he was listening to me.

Without raising his eyelids, he said, "You noticed that the DNA in your hand is similar to the DNA sample that appeared in the robbery?" ”

"It's not just that." I lowered my voice and said, "I found that the boy's DNA is 50% similar to that of another man in my organization. ”

"How do you have so much DNA?" Only then did Li Jing raise his head and look at me puzzled.

"Hmm." I smiled embarrassedly, "The DNA sample of the person in the organization was collected by me before, because I participated in a hobby club before, and there was a senior in it who talked about the relationship between DNA and cracking the case. Xiaozhi thought it was interesting at the time, so he desperately secretly collected the hair that might have fallen out of other people's bodies, or the disposable paper cups that he had touched, cut out the parts that might have DNA residue, cast them for experiments, extracted DNA and recorded it. She herself couldn't say why she did this, but she simply found it interesting to collect and extract DNA information. And she wants to help Ban Que save the money entrusted by the DNA laboratory when she takes the commission, and let her do DNA comparison, so that her brother Ban Que can earn more money, so Xiaozhi has been teaching himself this knowledge. And she is used to storing this information, and subconsciously thinks that maybe it will come in handy someday, and she is right, this information does come in handy. When she extracted the DNA and entered the order into the computer, the computer system directly informed her that there was similar DNA information in the system, and he clicked on it and found that another similar DNA was the DNA of a man in the organization who had not spoken to him much. Xiaozhi re-compared and found that there were 50% similarities, in addition to being surprised, after all, this represents the establishment of kinship. Later, when she always felt that something was wrong, she specially checked the boy's information, and found that the boy and the man in the organization did not have half of the intersection, and then followed the client's information, and then found her husband, so that she moved out of the unsolved gun theft case and the subsequent series of robbery and murder cases, and she realized that the DNA in her hand was likely to have something to do with the theft case back then. But because not much DNA from the killer was found at the scene at that time, he couldn't be sure if it was really related. After that, she searched all the case files for those two years, and finally got a DNA sample from the bank robbery, which matched the man's DNA completely. Later, Xiaozhi found out that the client's husband had indeed worked in that gun-making factory, and after losing the gun, their factory made strict human resources records. When I checked the records, I found that the client's husband had left his hometown because of the layoffs in the factory eight years after the crime, and went to the world to work hard to make a living. In fact, he and the man in our organization should be considered an uncle-nephew relationship, which is why the man is 50% similar to his illegitimate child in DNA. And most importantly, the man in our organization is supposed to be the same person who left his hometown before the bank robbery. I explained it this way.

"How do you know when he's gone?" Li Jing asked.

Xiaozhi later went to the man to talk about his nephew. The man showed a very resistant emotion. So I judged that the client's husband should be aware of something. He was always changing the subject, and was wary of asking why Xiaozhi was talking about his nephew. Xiaozhi could only say that someone asked her to check the information of the man's nephew, and she happened to meet him, so she wanted to know more about the situation. ”

The client's husband was very uncooperative, but you could still hear the panic in his tone when someone mentioned that he was going to check on his nephew. And he kept asking if he wanted to find out what happened to his nephew, but then Energy Saving felt that he was too excited, and left in a hurry without saying a few words. ”

Li Jing thought about it and asked, "Can you tell when his nephew left his hometown?" ”

"I didn't ask it, but by checking him, I slowly found out about his nephew's situation, his nephew has now changed his name and surname, if he can't find anything according to his nephew's current name, but if you are careful, you can still check the school records of several of his nephews through the client's husband, and then roughly deduce which of his nephews said that the predecessor of the man in our organization, and then look for it, except for a graduation photo, which can vaguely identify the appearance of the man in his youth from the cotton thread Air France, Another important clue is that the man seems to have dropped out of high school and left his hometown after finishing high school in China this year. Less than half a month after he left home, a bank robbery occurred, and two months later, the gun factory was stolen, and his uncle was an employee of the gun factory, and the first robbery and murder occurred three months after the gun was lost. By the way, his father was a member of the militia when he was younger, and he was completely proficient in the use of firearms. I looked into Li Jing's eyes and said word by word. (To be continued.) )