Li Yi wiped the whiteboard on the wall, which was a habit of him, and every time he began to prepare to discuss the case, he would record the key points and key people on the whiteboard, and then repeatedly verify their mutual relationship and mutual involvement until they were equalized.

Qin Gang is different from him, he likes to draw mind maps on the computer, and the most important thing is that he doesn't like to erase the whiteboard.

Qin Gang brought the file, and Li Yi looked at it in front of the whiteboard.

"The shoe prints at the scene and the shoe prints at the scene of the previous burglary cases are the same person, the analysis of the technical team This guy is about 175-180CM tall, the first few times he only collected traces at the scene, and there was no relevant discovery in the surrounding surveillance, but this time the security monitoring is very powerful, the shot is very clear, the face is right, it can be seen that he is not a smart thief, he is considered to have shown his face." Qin Gang said.

Li Yi first browsed the recent related cases, no more than 3 months before and after the occurrence, and chose to commit crimes in high-rise buildings in the community, sneaked into the rooftop residents from the rooftop in the middle of the night, and then stole them, and escaped through the gate after succeeding. Residents only woke up in the morning to find out that it had been stolen, but not many of their belongings were lost.

It's just that this technique is quite difficult, Li Yi thinks about the operation of going down the balcony from the ceiling of a building, even if he doesn't do it himself, his feet feel a little trembling, and he has committed crimes 5 times in 3 months, so he is really not afraid of falling to death.

Li Yi wrote on the whiteboard: Habitual offender.

"What kind of brain circuit is this guy? In this way. ”

"It's hard to say, the multimolecular complex structure of people is too complex, some people use the brain, some people use the cerebellum, and there may be some people who think with their toes, and it is not excluded that there are also people who think with their butts. There is also a possibility, maybe people are brave and bold, and the challenge is difficulty, unlike the two of us, what is avoided is difficulty. Qin Gang laughed.

Li Yi continued to write under the whiteboard: The head may have been caught by the door. Think about it and wipe it off if it doesn't fit.

"Judging from the previous four cases, the financial loss is not large, and the loss of cash is not much, it is nothing more than the loss of mobile phones and laptops. I don't think there's anything to steal, and I take my phone and laptop with me. It's good that a mobile phone can sell for two or three hundred, but a laptop is really not good, so it's a risk and no gain, and it's a stupid thief. Qin Gang said.

Li Yi wrote on the whiteboard again: The reason for frequent crimes is that the income from each theft is not high.

This method of committing a crime, in a southern city many years ago there was a similar case, the thief also sneaked up to the roof to hide, stayed until midnight, from the roof to the roof sneaked into the house, I thought that the owner of the house should sleep in the middle of the night, but never thought that the owner of the house did not sleep, just hit the head, the thief was in a hurry to pull out a knife to commit murder, the result of the theft turned into a homicide.

When the murderer fled, he actually took the elevator, and it didn't take much trouble to solve the case, but this kind of modus operandi is indeed rare, in Li Yi's view, if it is not the adrenal secretion of the upper brain, he will not choose this movie-style method to commit theft.

"Why did he have to choose this kind of high-rise, choose a building without an elevator, that kind of old-fashioned building with seven or eight floors is fine, at least that height looks down-to-earth, and it won't feel so mad." Qin Gang threw out a question.

Li Yi looked at the whiteboard and thought about it for a while, "People will have an inertial perception of the world, for example, if you see a big man with a full beard and bumpy muscles, your subconscious will think that this person is good, and generally feel that this person will be very fierce and a little difficult to mess with, if he has a tattoo on his arm, what will you feel, he must be a social person, right." ”

Qin Gang nodded.

"In the same way, a house with seven or eight floors of old buildings without elevators, or a building with twenty or thirty floors with elevators, which one looks more expensive?"

"Visually it's definitely the latter."

"So, if you want to steal something, in a forest of steel and stone concrete, do you have to choose a house that looks more expensive, the concept is very simple, the house is expensive, and the person who houses the house is also a person who is financially well-off in theory, this is a kind of inertial cognition. Of course, people who live in villas will be richer, but that is not very operable, there are no villas in the city, and it is difficult for ordinary thieves to travel to and from areas with villas; Besides, at night, the black lights are black, and the distance is 20 meters or 100 meters, and it may feel similar, don't believe you try. ”

"The inferences are reasonable, I just think this method is a bit stupid, and if you want to do this, you have to practice rock climbing first, or you can't do it." Qin Gang said.

"Not necessarily, I like to use a whiteboard to deduce the case, you like to use a mind map on the computer to deduce the case, the preference or it is just a habit, not because I draw well or write beautifully, nor is it how proficient you are in using the mind map software."

Li Yi carefully went through the information of the East Lake case.

The case does not seem to be complicated, Donghu Community, a high-end real estate in the early days of the city, next to Donghu Avenue, on the edge of the East Lake, a row of willow trees by the lake, open the window to see the lake, willow waves and warblers, the legendary ecological negative ion oxygen-rich community.

The victim, Ms. Lin, 31 years old, a housewife, has lived in the community for 5 years, and her husband is engaged in the sales of medical devices.

The murderer sneaked into the theft at night and woke Ms. Lin up, so he pulled out a knife and slashed Ms. Lin, and then opened the door and fled without a trace. The thief was quite clever, he didn't take the elevator, he slipped away from the fire ladder, but he entered the underground parking lot, although the camera in the basement was blurry, but he still recorded the figure, and the important thing is the evidence of the time.

Ms. Lin reluctantly called the property to call for help, at that time there was a lot of blood loss, fortunately the treatment was timely, there were knife wounds on the face, hands, shoulders, and body, and there was no danger of life, but she was overly frightened, and her face was scratched, and her emotions have been unstable, and she has never been recorded.

Is it really as Team Liu said: Isn't it difficult?

Li Yi didn't think so in his heart, Qin Gang said that there were doubts in this case.

"If you just look at the process before and after, I feel that we have nothing to do, just wait for the investigation to report, everyone has shown their faces, and they can't escape. But the evidence at the scene ......," Li Yi said halfway.

"You have an idea, don't you, I think we both have the same idea." Qin Gang understood what Li Yi wanted to say.

"I still have to go to see the scene, I haven't been to the scene once, I always feel like something is missing." Li Yi said.

"Yes, if you finish writing out the information, we will go to the hospital to make a record first, and then go to the scene when we come back. Don't worry, you can scan it again and see if you can sniff out anything else. Qin Gang picked up the whiteboard marker and drew a big question mark on the whiteboard.

"By the way, yesterday I accompanied the victim's husband back to the scene, and asked him to roughly order all kinds of items at home, the same is no less, this thief should not be stupid to carry it, he has committed the crime 5 times, the modus operandi is very difficult, and ordinary people can't do it, but there is no gain. The only thing is that he has not found his wife, that is, Ms. Lin's car key, I went to the basement to see it, and the car is still there, I guess it was too chaotic at that time and I don't know where to go, and then I went home and found a spare key in the cabinet. ”

Li Yi continued to write on the whiteboard: lost the car keys, no other items were missing. Suspicious, the time when the victim calls for help.