I didn't expect that the young man had some insights into criminal investigation and criminal psychology. The two talked about several cases that have made a sensation in the province in recent years, and the young man actually knew all about them. What does an old detective like to do most? He likes to talk about the cases he has solved after drinking and brag about them. The two had a very pleasant conversation.
Later, somehow, we ended up talking about the Xu Baping case.
The young man asked, "Do you think Xu Baping is powerful?"
The old detective subconsciously said, "Awesome." In his opinion, someone who killed so many people and was so cruel and ruthless was not a ruthless person.
The young man smiled and said, "I think he is just that. In fact, his method of committing crimes is very simple and crude. He didn't spend any effort at all. First, it is too difficult to detect a stranger committing a crime. Otherwise, since the founding of the People's Republic of China, those notorious killers who killed dozens of people were only elementary school graduates, and some were simply farmers. Why did it take several years to catch them? Second, the criminal investigation methods at that time were still backward. If he were put in today's situation, he would be captured by surveillance cameras immediately and caught in one day."
Although the old detective felt a little uncomfortable, he had to admit that what the young man said made sense.
However, the young man changed his attitude very quickly, and asked him about the details of some of the cases in the past with great curiosity and patience. Because the case had been solved long ago and the murderer had been caught, there was nothing that could not be said as long as it did not involve the specific identity of the victim, so the old detective told him everything.
In the end, the old detective was so drunk that he had to be sent home by the young man.
But he only met the young man once and never saw him again.
…
You Mingxu's eyes sparkled as he heard this: "Does the old comrade still remember what the young man looked like? What's his name?"
Xu Mengshan replied: "That person didn't say his name, and two years have passed. I only saw him once. The old comrade said he only had a general impression of his appearance. But we should try our best. Hehe, I have invited the old comrade back, and I will invite a portrait expert later."
The portrait expert mentioned here is someone who draws portraits.
You Mingxu was very happy to hear this. Even though it was only a rough outline, he had a direction. And from what the old comrade said, the young man fits the appearance of the murderer in the surveillance video very well, as well as Yin Feng's description of that man's criminal psychology.
The fourth line of investigation that Xu Mengshan conducted was to see whether there had been any recent reports of attacks or stalking of women. Upon investigation, more than ten cases were found, but some of them were proven to be mistakes, and the criminals of some others had been caught. There were two cases where single girls felt someone was following them when they were returning home from get off work in the middle of the night. But the girl was more alert and ran away quickly. You Mingxu asked Xu Mengshan to check the relevant surveillance to see if he could find any clues.
The fifth line is to investigate forced entry. There was nothing to gain from this line.
As for the clue in You Mingxu's hand, she checked all the employees and customers of the two bath cities, but found no suspects. Even those who frequently deliver food, maintenance workers, cleaners... were also sorted out. She also felt that checking it this way was not a solution. She still had the feeling that the pattern should be hidden right under her nose and she shouldn't have gone so far. There must be some connection that she overlooked.
Yin Feng thought so too, and said to her: "Why don't I take you to get a massage, so you can get familiar with the process, and then find a massage technician to have a good chat with you and see what the process is like from the first day they join the company, what kind of people they come into contact with, and how they spend their days?"
You Mingxu said, "Go to hell!" Although she knew that both families were regular bathing centers and that Yin Feng had been more depraved in the past, she felt dissatisfied when she heard him mention eating, drinking, and having fun. She thought that now that he was in her hands, she naturally had no say over him and had to keep him under strict control. massage? Let the champion learn it and press it for him!
Yin Feng naturally had no idea of You Mingxu's thoughts. He didn't take her cold refusal seriously. After changing his mind, he asked Chen Feng to look up a set of massage techniques that were easy to learn and send them to him. He was smart. He memorized it after reading it several times on his phone. Thinking about going home in the evening... a smile appeared on his face.
However, although You Mingxu did not plan to get a massage, there was one sentence in Yin Feng's words that touched her. She felt that an originally inconspicuous clue appeared before her eyes. However, it is still too early to tell whether anything can be found out. So she turned to a colleague from the information technology department for help to verify some things.
So, no one expected that the first person to provide a breakthrough clue was the non-staff member, Yin Feng's gardener - Guan Jun.
It was the night after Yin Feng assigned the task to Guanjun, and also the fifth day after the second victim was killed. Guanjun sent everyone a directory of posts on the Internet and several IP address tracking results.
He refused to go into the bureau, so only Yin Feng, You Mingxu and Xu Mengshan were watching on the computer.
Following Yin Feng's instructions, Guan Jun compiled all the posts on major forums that discussed some famous serial murder cases. In addition, three posts were compiled that were also quite popular on the Internet, but they were specifically about discussing the Xu Baping case. Until last month, there were still people responding to these three posts. It can be seen that it is human nature to pay attention to violent things.
The champion selected three IPs from these discussions.
You Mingxu asked: "How was he chosen?"
Yin Feng replied: "I asked him to choose the ones he thought made sense."
You Mingxu paused: The champion is a bit abnormal to begin with, so it makes sense to let him choose - isn't that just a lucky coincidence?
The three of them picked up the information and looked at it.
The owner of the first IP has expressed his opinions many times on several serial murder cases on the Internet, and has also spoken about the Xu Baping case once or twice. His opinion was that Xu Baping was a very talented killer. Although he came from a poor family and had not received much education, he was able to handle several cases in a row, which showed that he was smart and flexible. Moreover, his words revealed that Xu Baping didn't care about being caught at all and what he was seeking was relief.
When Yin Feng saw this, he praised, "That's right."
In addition, the owner of this IP uses the same ID in several forums, so he is considered a well-known person in this discussion circle.
Yin Feng said, "It's not him."
The owner of the second IP seemed to be someone who had studied criminal psychology and criminal investigation. Every time he posted about a case, he would reason through the case or analyze the known methods of committing the crime. Although his analysis was sometimes right and sometimes wrong, he was right in many areas. Xu Mengshan looked at it and shook his head: "The experts are among the people."
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