Detective: Open your eyes, I am handcuffed in the interrogation room

Chen Yi rushed to the provincial office at 10:30. Qin He and Xie Yunzhi had not arrived yet. The meeting was in the afternoon. Geng Jianqing called Chen Yi over in advance because he wanted to talk to him about the preliminary investigation results of the Yangcheng case.

The alarm had just been received yesterday, and the comprehensive investigation had not yet begun. Chen Yi carefully told Geng Jianqing the clues he had so far.

"painting?"

These two words are quite sensitive. At least three victims of the three murder cases can be related to painting. The only far-fetched thing is that Bi Xuelan of Ningcheng only learned painting as her daughter, and she did not understand it herself.

Geng Jianqing did not analyze the possibility. When Qin He and Xie Yunzhi arrived, it would not be too late for everyone to get together and chat.

Near noon, Xie Yunzhi appeared at the provincial office. He was close to Yangcheng and drove here.

"Geng Bureau!"

Geng Jianqing was a superior being to him. Xie Yunzhi stood at attention and saluted with a serious expression.

Chief bureau chiefs are called director directly, and deputy bureau chiefs are called director by adding their surname and position and removing the adverb. Titles within the system are not allowed to be called randomly.

Geng Jianqing didn't say much and asked Xie Yunzhi and Chen Yi to eat first and wait for Qin He's plane to land.

In the provincial cafeteria, Chen Yi and Xie Yunzhi prepared meals and sat face to face to eat together. Geng Jianqing was not there, so he should have gone to find Fang Songping.

"Chen Zhi, we meet again, unfortunately because of the case." Xie Yunzhi spoke first, "Are the murder methods of Yangcheng and Dicheng really the same as Bi Xuelan of Ningcheng?"

Chen Yi nodded: "I have read the files of Ning Cheng and Imperial City. They are completely consistent. There is not much deviation in the angle."

Xie Yunzhi ate the food and said: "The murderer is quite professional. Is the choice of fatal stabbing related to habit?"

Chen Yi raised his head slightly: "What about?"

Xie Yunzhi: "With a military background and being a doctor, it is difficult for an ordinary person to kill someone with one blow."

Chen Yi: "Yesterday, I had a conversation with Bureau Geng and raised the possibility that the Imperial City case was not the first case. If it was not the first case, then the murderer's modus operandi had potential for growth. The first case might be very rough. Bureau Geng is investigating nationwide. Internal investigation, but there are no results yet.”

Xie Yunzhi: "Not the first case? Well... it's possible, let's wait and see."

After lunch, the two rested for an hour at the provincial hall. Qin He's plane landed in Yangcheng at two o'clock in the afternoon and arrived at the provincial hall at three o'clock.

When acquaintances meet, there is no greeting and the meeting begins immediately.

Fang Songping did not attend. He also had tasks. Geng Jianqing gave him the task of investigating cases across the country. Wei Jianfeng attended the meeting on behalf of the Provincial Department of Criminal Investigation.

The meeting began to get straight to the point. Qin He explained the Imperial City case, Xie Yunzhi explained the Ningcheng case, and Chen Yi explained the Yangcheng case. Because the Yangcheng case had just happened, Chen Yi didn't say much but focused on the key points.

There were all experienced and capable criminal policemen present. When Chen Yi finished speaking, everyone realized that the three murder cases were very likely to be committed by the same person, and their expressions were a little solemn.

Geng Jianqing said: "The 405 task force will be established immediately. Qin He will be the leader of the task force. The Yangcheng case will be the starting point of the investigation. Do you have any opinions?"

"No!"

Qin He is the captain of the Imperial City Criminal Investigation Corps, and he has this qualification.

Geng Jianqing nodded: "Okay, I will not leave Yangcheng during this period. The investigation of the Yangcheng case has just begun, and the interpersonal relationship of the victim Cai Wenwen has not yet been sorted out. Chen Yi has just raised the possibility that this time the murderer may be an acquaintance. What do the other two captains think?"

Qin He looked at Xie Yunzhi, who was also looking at him. It was Qin He who finally spoke: "Cai Wenwen has never stayed overnight without returning home. She was killed the first time she took the initiative to open a room. Judging from the current situation, an acquaintance The possibility is very high, and it is related to the field of painting."

"I agree with Chen Zhi's judgment. The suspect met Cai Wenwen through paintings and killed her during the process of opening a house. Cai Wenwen was wishful thinking, and the murderer wanted her life."

Xie Yunzhi followed up and said: "If you are an acquaintance, a comprehensive investigation should be fruitful. Even if you cannot identify the suspect, you can at least cover it. However, the murderers of the Imperial City case and the Ningcheng case did not leave any clues. This time it is a bit Taking a risk indirectly shows that his goal is very clear and he must kill Cai Wenwen, even if he takes risks."

Qin He: "Predatory obsessive-compulsive disorder."

Everyone looked at Qin He.

Qin He continued: "From the time of committing the crime to the method of committing the crime, as well as the risky behavior of killing Cai Wenwen, the murderer may have pathological obsessive-compulsive disorder. He does not seek wealth or sex, only life. Then his predatory nature should be the same as the formation factors of obsessive-compulsive disorder. related."

After all, he is the captain of the Imperial City Criminal Investigation Corps. Although he has just arrived in Yangcheng and has just learned all the facts of the case, he can come up with new possibilities immediately.

It is relatively easier for murderers with obsessive-compulsive disorder to judge their motives.

Obsessive-compulsive disorder?

Chen Yi thought thoughtfully, the time intervals were basically the same, and the crime methods were exactly the same, so the murderer killed for self-obsessive gain.

What to gain? Psychological relief?

Geng Jianqing: "Continue."

Now is the stage of speaking freely, which affects the direction of the subsequent investigation. The task of the leader of the task force is not to lead, but to coordinate and judge. After all, Chen Yi and Xie Yunzhi are both captains of the Yicheng detachment, and their abilities are definitely not empty.

Qin He: "Chen Zhi mentioned painting just now. I agree. The only person who cannot be identified is Bi Xuelan from Ningcheng. But if we open up our thinking, we can place our inference on Bi Xuelan's daughter."

"My daughter learning to draw is a clue that cannot be ignored. It is not impossible that Bi Xuelan came into contact with the murderer while accompanying her daughter to study."

“So I think the common denominator is not the painting, but the intersection that the painting extends.”

"The same goes for Xia Qingwen from Imperial City. She majored in art in college, so it's normal for her to have a painting encounter with the murderer. Not to mention Cai Wenwen from Yangcheng. She loves oil painting, and the intersection of painting plays a large role in interpersonal relationships."

After Qin He's analysis, the case seems to have become clearer in everyone's eyes, and the possibility of detection is increasing.

Geng Jianqing turned around: "What do Chen Yi think?"

Chen Yi said: "According to Captain Qin's judgment, the probability that the murderer is the painting teacher is not small."

Qin He nodded: "Yes, what I want to say is the painting teacher. Has Xie Zhi checked the training class where the victim's daughter is?"

Xie Yunzhi responded: "After checking, it was the place where Bi Xuelan had been, so it was not missed. However, I did not investigate further. Bi Xuelan had no involvement with the people in the painting training class, so we quickly ruled it out. Since this case is not a vendetta, Then we can check again.”

Qin He hummed: "I will also conduct a re-investigation here at Imperial City Normal University. As long as everyone the victim has met makes a list, if there is any overlap after comparison, then he is a major suspect."

Geng Jianqing's eyes lit up, this direction was very reliable.

Chen Yi thought about this possibility. Qin He's entry point was still very tricky, erasing the irrationality of the common points of Bi Xuelan's paintings. Even if the characteristics are random, they must meet. As long as the overlap can be found, it is the murderer's. The possibility is great.

But what he was thinking about was not this kind of procedural investigation, but the reason why the murderer chose three people.

No one can predict the results of the procedural investigation. As long as the murderer's motive is known, a clear criminal profile will emerge, which can truly advance the investigation.

Having said that, investigation work must be done. What if it is found? And Chen Yi also believes that the probability of finding it is not small.

"Chen Yi, hurry up here." Geng Jianqing looked at Chen Yi.

The Yangcheng case has just happened, and the Yangcheng detachment must use the shortest possible time to fully cover the interpersonal relationships of the victim Cai Wenwen.

Chen Yi nodded: "Yes, Director Geng."

The suspicion was placed on the painting teacher, and Chen Yi thought of Qiu Wenshu's oil painting studio.

Oil painting studios are usually art institutions that integrate multiple functions. In addition to creation and sales, there may be painting courses.

In this case, there are common points and common intersections: the painting teacher of Dicheng Normal University, the painting teacher of Ningcheng training class, and the painting teacher of Yangcheng Oil Painting Studio.

The outcome depends on the investigation.

The meeting continued, and several people talked about regional issues. The murderer would be shot and moved to another place within four years. Everyone agreed that it was because of work needs. He traveled across the country and killed people in whichever city he went.

Such murderers often have extremely strong psychological qualities and do not have a psychological safety zone. From the murderer's perspective, safety is not as important as killing. This is also a sign of great confidence.

Chen Yi said: "Calm, stubborn, strong anti-detection ability, unknown motive, and possessing a certain degree of obsessive-compulsive disorder. If I were a painting teacher, I would tend to have a high IQ and high education, and I developed a psychological disorder at a young age."

Qin He added: "Single-parent families are most likely, such as single mothers giving high-pressure education to their sons."

Xie Yunzhi: "It is also possible that the single parent remarried and the stepmother's indifference allowed the suspect's repressed dark side to explode in adulthood."

Qin He nodded in agreement.

There is great power in numbers. In a short period of time, the whole case unfolded in detail like a picture scroll, and the image of the murderer also had an outline.

Chen Yi: "There is another issue that needs to be discussed. Although the murderer's killing methods are the same, the crime process is very different."

"In the Imperial City case, the murderer committed an assault. In the Ningcheng case, the murderer stunned the victim with sevoflurane, kidnapped her, and killed her while she was awake. In the Yangcheng case, triazolam was detected in the stomach of the deceased. , judging from the state of death, she was killed in a coma."

“Is this a purposeful change, or is it just a matter of preference?”

The conference room fell silent. This matter was really not easy to analyze.

Geng Jianqing looked over: "What do you think?"

Chen Yi: "Look at it divided into two aspects. The first aspect is the murderer's preparation for committing the crime, and the second aspect is the murderer's result."

"Let's talk about the preparations for committing the crime first. The murderer did not use drugs when he killed Xia Qingwen in the Imperial City. The reason should be that it was not necessary. He did not need to use drugs to stab Xia Qingwen's throat in the cemetery."

"In the Ningcheng case, the murderer needed to kidnap Bi Xuelan when he attacked her in Ningcheng, so he had to find a way to make Bi Xuelan lose her resistance. Sevoflurane is a good choice."

"The Yangcheng case is rather strange. The murderer and the deceased were in a closed space, so there was no need for him to use triazolam."

"As for the results of the crime, the deceased in the Ningcheng case and the Imperial City case were killed in a conscious state, while the deceased in the Yangcheng case was killed in a coma. It would be fine if there is no purpose. If there is, then it must be It is highly related to the motive of committing a crime, and different people require different modus operandi."

"These two aspects complement each other, and we need to be able to make sense of each other when we analyze."

Chen Yi's words bring the case to a deeper level that cannot be found through investigation, testing the logic and criminal psychology of the investigators.

It is difficult to figure out the criminal psychology of a serial murderer, especially when there are no victims with the same characteristics, and the conference room became silent for a while.

Everyone is thinking.