Chen Yi rushed to the provincial hall at half past ten, Qin He and Xie Yunzhi had not yet arrived, and the meeting was in the afternoon, Geng Jianqing called Chen Yi over in advance to talk to him about the preliminary investigation results of the Yangcheng case.

I just received a report yesterday, and the comprehensive investigation has not yet begun, so Chen Yi carefully told Geng Jianqing about the clues he currently has.

"Painting?"

These two words are quite sensitive, at least the three victims of the three murders can be related to the painting, the only far-fetched thing is that Bi Xuelan in Ningcheng is just her daughter learning to paint, and she herself doesn't understand.

Geng Jianqing didn't analyze the possibility, and when Qin He and Xie Yunzhi arrived, it was not too late for everyone to get together and chat.

Near noon, Xie Yunzhi appeared in the provincial hall, he was close to Yangcheng, and he drove over.

"Geng Bureau!"

Geng Jianqing was a towering existence to him, and Xie Yunzhi saluted with a serious expression.

The main bureau is directly called the director, and the deputy bureau's surname and position are removed from the subordinate, and the title in the system cannot be called indiscriminately.

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

In the cafeteria of the provincial hall, Chen Yi and Xie Yunzhi cooked a meal, sat down face to face and ate together, Geng Jianqing was not there, he should have gone to find Fang Songping.

"Chen Zhi, we met again, it's a pity because of the case." Xie Yunzhi was the first to speak, "The killing methods of Yangcheng and Imperial City are really the same as those of Bi Xuelan in Ningcheng?" ”

Chen Yi nodded: "I have read the files of Ningcheng and Imperial City, they are completely consistent, and even the angle has not shifted much. ”

Xie Yunzhi ate the food and said, "That murderer is very professional, is the choice of stabbing fatal related to habit?" ”

Chen Yi raised his head slightly: "For example?" ”

Xie Yunzhi: "With a military background, a doctor, it is difficult for an ordinary person to kill with one hit. ”

Chen Yi: "Yesterday I communicated with the Geng Bureau, and proposed that the Imperial City case is not the first case, if it is not the first case, then the murderer's modus operandi has growth, the first case may be very rough, and the Geng Bureau is investigating nationwide, and there is no result yet." ”

Xie Yunzhi: "Not the first case? Well...... Possibly, wait and see. ”

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

There was no greeting when acquaintances met, and the meeting began immediately.

Fang Songping did not attend, he also had a task, Geng Jianqing handed over the work of investigating cases across the country to him, and it was Wei Jianfeng who attended the meeting on behalf of the criminal investigation of the provincial department.

The meeting began to cut directly to the topic, Qin He expressed the Imperial City case, Xie Yunzhi expressed the Ningcheng case, and Chen Yi expressed the Yangcheng case, because the Yangcheng case had just happened, Chen Yi did not say much and mainly focused on the key points.

The present were all experienced and capable criminal policemen, and when Chen Yi's voice fell, everyone realized that it was very likely that the three murders were from the same person, and their expressions were a little solemn.

Geng Jianqing spoke: "The 405 task force will be established immediately, Qin He will be the leader of the task force, and the Yangcheng case will be the starting point of the investigation, do you have any opinions?" ”

"Nope!"

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

Geng Jianqing nodded: "Okay, I won't 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 explored, Chen Yi has just raised the possibility, 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, and finally spoke to Qin He: "Cai Wenwen has never had a situation where she didn't return overnight, and she was killed the first time she took the initiative to open a room. ”

"I agree with Chen Zhi's judgment that the suspect met Cai Wenwen through painting and killed her in the process of opening a room, Cai Wenwen was wishful thinking, and the murderer wanted her life."

Xie Yunzhi followed up and spoke: "If it is an acquaintance, a comprehensive investigation should be rewarding, even if the suspect cannot be locked, at least it can be covered, but the murderers in the Imperial City case and the Ningcheng case did not leave any clues, this time it was a bit risky, which indirectly shows that his goal is very clear, he must kill Cai Wenwen, even if he takes the risk." ”

Qin He: "Predatory obsessive-compulsive disorder." ”

Everyone looked at Qin He.

Qin He continued to speak: "From the time of the crime to the modus operandi, as well as the risky behavior of killing Cai Wenwen, the murderer may have pathological obsessive-compulsive disorder, not seeking money, not seeking sex, only seeking life, then his predatory nature should be related to the formation factors of obsessive-compulsive disorder." ”

After all, he is the captain of the Imperial City Criminal Investigation Corps, although he has just arrived in Yangcheng and just learned all the facts of the case, he can put forward new possibilities at the first time.

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

Obsessive-compulsive disorder?

Chen Yi thought about it, the time interval was basically the same, and the modus operandi was exactly the same, so the murderer killed people for self-compulsive gain.

What's the catch? Psychologically soothing?

Geng Jianqing: "Go on." ”

Now is the stage of speaking freely, affecting the direction of the next investigation, the task of the task force leader is not to lead, but to coordinate and judge, after all, Chen Yi and Xie Yunzhi are both the detachment leaders of a city, and their abilities are definitely not false.

Qin He: "Chen Zhi mentioned painting just now, I agree very much, the only person who can't sit in the right seat is Bi Xuelan from Ningcheng, but if we open our minds, we can infer the direction on Bi Xuelan's daughter." ”

"My daughter's learning to draw is a clue that can't be ignored, Bi Xuelan came into contact with the murderer when she accompanied her daughter to study, it's not impossible."

"Therefore, I think the common denominator is not painting, but the intersection of paintings."

"Xia Qingwen in the Imperial City is the same, majoring in art in college, it is normal for her to have a painting intersection with the murderer, not to mention Cai Wenwen in Yangcheng, she loves oil painting, and in interpersonal relationships, the intersection of painting occupies a large proportion."

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

Geng Jianqing turned his head: "What does Chen Yi think?" ”

Chen Yi spoke: "According to the judgment of the Qin team, the probability that the murderer is a 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 located?" ”

Xie Yunzhi responded: "I checked, that is where Bi Xuelan went, so I didn't omit it, but I didn't investigate it deeply, Bi Xuelan had no entanglement with the people in the painting training class, and it was quickly ruled out, since this case is not a vendetta, then we can check it again." ”

Qin He snorted: "Imperial City Normal University, I also have to re-investigate, as long as the victims have seen a list, if there is any overlap after the comparison, it is a major suspect." ”

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

Chen Yi pondered this possibility, Qin He's entry point is still very tricky, erasing the irrationality of the common points of Bi Xuelan's paintings, even if the characteristics are random, they must be met, as long as the overlap can be found, it is very likely that he is the murderer.

But what he thinks about is not this kind of process investigation, but the reason why the murderer chose three people.

No one can say the results of the process investigation, as long as you know the murderer's machine, a clear criminal profile will come out, which can really promote the progress of the investigation.

That being said, the investigation 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, Geng Ju." ”

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

An oil painting studio is usually an art institution that integrates multiple functions, and in addition to creating and selling, there may be painting courses.

In this way, there are common points and common intersections, the painting teacher of the Imperial City Normal University, the painting teacher of the Ningcheng training class, and the painting teacher of the Yangcheng Oil Painting Studio.

The outcome depends on the survey.

The meeting continued, and several people talked about regional issues, the murderer took a shot in four years and changed places, and everyone agreed that it was a work need, and they ran all over the country to kill people in whichever city they went to.

In the eyes of murderers, safety is not as important as murder, which is also a sign of great self-confidence.

Chen Yi spoke: "Calm, stubborn, strong anti-reconnaissance ability, unknown motives, with a certain obsessive-compulsive disorder, if it is a painting teacher, I tend to have a high IQ and high education, and formed a psychological disorder when I was a child." ”

Qin He added: "Single-parent families are most likely, such as the high-pressure education of a single mother to her son. ”

Xie Yunzhi: "It may also be a single parent remarried father, and the indifference of the stepmother made the dark side of the suspect's depression explode in adulthood." ”

Qin He nodded in agreement.

The strength of the number of people is great, and the short time makes the whole case unfold in detail like a picture scroll, and the image of the murderer also has an outline.

Chen Yi: "There is another issue that needs to be discussed, although the murderer's murder methods are the same, the process of committing the crime is very different. ”

"In the Imperial City case, the murderer was attacked and killed, in the Ningcheng case, the murderer used sevoflurane to stun the victim and kidnap her, and killed the victim when she was conscious, and the triazolam component was detected in the stomach of the deceased in the Yangcheng case, and from the state of death, she was killed in a coma."

"Is this a purposeful change, or is it all about preference?"

The conference room was quiet, and this matter was really not easy to analyze.

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

Chen Yi: "It is divided into two aspects, the first aspect is the murderer's preparation for the crime, and the second aspect is the murderer's results. ”

"Let's talk about the preparation for the crime first, the murderer didn't use drugs when he killed Xia Qingwen in the imperial city, the reason should be that it is not necessary, he doesn't need to use drugs at all, he can stab Xia Qingwen in the cemetery."

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

"The Yangcheng case is more strange, the murderer and the deceased are in a confined space, and there is no need for him to use triazolam."

"Let's talk about the results of the crime, the deceased in the Ningcheng case and the Dicheng case were killed in a conscious state, while the deceased in the Yangcheng case was killed in a coma, if there is no purpose in this, it is fine, if there is, then it must be highly related to the motive of the crime, different people need different modus operandi."

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

Chen Yi's words brought this case to a deeper level, and it was impossible to find out, and tested the logic and criminal psychology attainments of the case-handling personnel.

The criminal psychology of the serial killer is difficult to figure out, especially without the same characteristics of the victim, and the conference room becomes silent for a while.

Everyone is thinking.

(End of chapter)