The autumn rain outside the window was swept up by the wind, frantically slapping everything covered by the night rain, like handsome men and women struggling in the gym, wheezing and whimpering, bursting and destroying the flowers and plants in the courtyard stems, oppressing and unable to raise their heads, just like the atmosphere in the conference room became more and more solemn.

"Male, between the ages of 30 and 40, about 1.7 meters tall, medium stature, most likely to have work experience in the system, highly educated, psychologically traumatized, single parent or orphan, personality ...... Cautious and careful, meticulous as a hair, with a strong desire to control, and extremely confident. ”

Half an hour later, Wang Tao and Xia Dong gave a detailed introduction to the whole thing and all the clues they had.

And Song Chuan directly gave a characteristic profile about the sender.

After Song Chuan quickly made a mental profile of the sender, Chen Jianbin listened carefully to Song Chuan's analysis and suddenly said: "Tell me the basis for your conclusion." ”

Song Chuan nodded, got up and walked to the whiteboard and began to explain: "Because there is too little visibility information, the close-up of my appearance is mainly based on the conclusions drawn from the content described by Captain Wang Tao. ”

"The other party's address to Team Chen in letters and text messages is the detachment leader rather than the captain, and from this point of view, the other party is likely to have work experience in the system, especially related to our industry."

"There is also the printer used by the other party is the HP1002 model, which is generally used in the system, and there are very few in the print shop."

"Isn't it a bit far-fetched to say that the other party has worked in the system based on these two points?"

Song Chuan looked at Wang Tao who posted the article and paused and continued to explain: "Generally speaking, most ordinary people can't tell the difference between the criminal investigation detachment, the criminal investigation brigade or the criminal police team, even us, most of the time we call the detachment leader Chen, and rarely call the detachment leader, the other party is so formal and accurate in letters and text messages, on the one hand, it shows that the other party understands the system better, on the other hand, it reflects the other party's cautious and cautious habits, plus the model of the printer, and these are likely to indicate that the other party has work experience in the system." ”

Seeing Wang Tao nodded, Song Chuan picked up the envelope and mobile phone: "Judging from the content and signature of the letter and text message, the other party knows more about Western literature, and there is a high probability that he has received higher education. ”

Song Chuan's analysis was very detailed, and everyone nodded frequently, Xia Dong had also been exposed to criminal psychology when he was an undergraduate at the Public Security University: "Song Chuan, we can understand what you said, including the detailed judgment of the sender's cautiousness and carefulness, we have not found any trace of the other party in the past three days, which is enough to prove this, but why is the other party extremely controlling and extremely confident?" ”

"This aspect involves the knowledge of criminal psychology, I remember that you graduated from the criminal investigation major, right?"

"Director Xia, I was very interested in this aspect when I was in school, and I have been studying criminal psychology on my own, and now I have a little experience."

Song Chuan crossed his arms and glanced out the window at the rainy night: "Because he is extremely sure that we can't find him through the existing clues, that's why he stood in the parallel position of the camera on the Yellow River Road and handed the letter to the little boy, and why did he send a text message near the criminal investigation detachment!" ”

"It's not a random act on the part of the other party, but a well-planned plan for the other party to ...... It's done on purpose! ”

In fact, the so-called criminal psychology is an interdisciplinary discipline of criminology and psychology, through the study of the suspect's behavioral traces, the analysis of the suspect's psychological dynamics, combined with some physical characteristics to divide the suspect's traces left at the scene of the crime, analyze the suspect's height, weight, personality characteristics and other information, and summarize the scope of the suspect.

In the criminal investigation detachment, this kind of compound talent is actually very important, and it is extremely scarce, because this is a discipline that combines theory and practice with a high degree of integration, and it is necessary to be familiar with the practical application of psychology and have a detailed understanding of criminal investigation work.

Whether it's applied psychology or forensic technology, it's extremely difficult to be a leader in one or the other, let alone both.

Chen Jianbin has always wanted to send a talent in this area to the criminal investigation detachment before, he is not afraid of inexperience, no experience can be accumulated, and once there is progress, just like Song Chuan is now, with the existing evidence and the other party's behavior, he probably deduced the basic situation of the other party.

This thing sounds easy, but to really summarize and form a conclusive generalization, it takes professional knowledge.

Chen Jianbin didn't expect that Song Chuan not only had a talent for on-site investigation, but also made achievements in this area, okay!

Although there are still no clues from the other party, with such a clear profile, as long as the other party shows his head, Chen Jianbin is sure to catch the other party, but he doesn't know how sure Song Chuan is of his own analysis: "Song Chuan, how sure do you grasp this judgment and analysis...... How big is it? ”

How big is it?

Song Chuan groaned secretly, he knew why Chen Jianbin asked this question, if he was very sure, then this was the main basis for the team to find the other party in the future.

You must know that the most important thing to solve the case is the direction, if the direction is right, you will get twice the result with half the effort, and if the direction is wrong, the murderer may not be recognized when he stands in front of you.

"Team Chen, I'm sixty percent sure!"

Song Chuan is still conservative in terms of data, he once founded a psychological detective agency when he was at the Public Security University, and he has a lot of experience in sitting psychological profiles.

Sixty percent ...... This probability is neither high nor low, it is difficult to be 100% sure of something at any time, especially in the chopping block case, always maintaining a skeptical attitude is the magic weapon of Chen Jianbin to win many battles.

"In addition, the other party's heart is full of narrow heroism, and right and wrong are clear," Song Chuan picked up the letter and pointed to the signature left by the other party: "The Western Angel Raguil, the owner of the key to the Angel's Gate, is an angelic chasher who exercises the authority to spy on angels, but was later expelled from heaven and is considered a demon who impersonates a saint. ”

THE OTHER PARTY SIGNED RAGUEL...... It is quite possible to imagine being the punisher of sin, or more appropriately to describe it as an executioner in the dark. ”

Song Chuan's expression here has actually made some modifications, and the so-called punisher of crime may be more appropriate to describe it as an executioner in the dark.

"And the most important point, the other party is most likely not crippled!"