Chapter 088 The captain went into battle to talk about the whole case, and he didn't let go of the question step by step

The little policeman in the mouth of the Ai detachment sat down, and I knew that my captain was going to take the stage.

"Director Tang and Director Zhang, I want to hear about the results of the reform of your technical team, do you think it's okay?" Ai said with a smile.

"Haha, you're the leader, you can do whatever you want." Director Tang said with a smile.

"Okay, then you're welcome. I'm really a leader today. As the saying goes, there are no weak soldiers under a strong general, and I just listened to Xiao Cao's report and was deeply touched. Next, I would like to hear the report of his leader, Captain Li, can you tell us your views on this series of cases? Detachment Ai looked at me and asked.

All eyes were on me, and what I had expected finally happened.

I nodded and said:

"As the head of the technical team, it is my duty to report my work to all leaders. Let me first explain why Xiao Cao is investigating the scene of this case today. I know that this is a series of cases, it is a big case, and it stands to reason that I should have led the team to investigate, but our technicians need to be trained in big cases and important cases, and they need to improve, so I will make the decision to let Xiao Cao investigate the scene, and Xiao Tang and Tip of the Municipal Bureau will cooperate with me and Xiao Ke. I just let Xiao Cao take charge of the survey, and we were always involved in the whole process.

Secondly, there have been so many cases, and the cases have happened for so long, and they have not been solved, although there are various factors, but the forensic technical work, which is the support for solving the case, has not extracted strong traces and physical evidence at the scene. The stagnation of the case should be a very important factor, and I would like to review it on behalf of the technical team. If I can't analyze the places below, I also ask the leaders to criticize and correct. ”

"Captain Li, don't be modest, don't review, don't explain, I still have a certain understanding of your level and ability. Let's get down to business. Said the case. Ai said with a smile.

I went on to say:

"Just now, Captain Zheng, Team Ke, and Xiao Cao made a comprehensive report on today's two cases, each with its own focus; Thanks to the reminder of the Ai detachment of the problems that have arisen in our technical exploration, we will definitely overcome and correct them in our future work.

Below. Let me tell you a little bit of my personal opinion on this series of cases.

This series of cases began in the early morning of June 8, 1985, when Zhong Aifen was raped by Zhong Aifen in Kehua Village, Dalong Town. Until now. Thirteen years have passed, and there are 19 cases that we can consolidate, and there are 13 suspected cases that can be investigated in collusion.

Cases that occurred before today. We have already made a collusion case opinion, and Xiao Ke and Xiao Cao will send the materials to the leaders. ”

The two were busy sending materials.

I went on and said:

"The opinions on the collusion case held by the leaders and comrades are the sorting and sorting out of the case by our technical team, and its purpose is to better solve the case. Only by figuring out the law of the case and the characteristics of the perpetrator can we solve the case faster and better. At the same time, it is also conducive to our study of the law of crime and to find better investigation measures and ways.

Here are some of my personal takeaways.

First, it's a matter of time.

The first is the year.

Judging from the information currently available, the perpetrator committed the crime for the first time in 1985 and continued to commit the crime until 1990, with a gap of five years in between, followed by 1991, 1993, 1995 and 1997. In these intervals, did the perpetrator not commit the crime, or did we not grasp the crime after committing the crime? There are both possibilities, if the crime is committed, that is, the victim did not report it, so it is necessary for us to investigate the same type of case; If the crime was not committed, then why did the perpetrator not commit the crime? We have to figure out why, which gives us more room to think. Personally, I think there are definitely cases that we don't grasp.

The second is the month.

Let's take a look at the opinion form of the collusion case, all the cases before this year are concentrated from June to November, the weather is hotter in this season, and the personnel are thinly dressed, which is the peak period for sexual assault cases, which is the same as the pattern of general sexual assault cases. However, this year's crime began in May, and the perpetrator advanced the time of the crime. This is based on the fact that for so many years, we have not solved the case, and the perpetrator thinks that we cannot solve the case, and despises the ability and level of our public security organs to solve the case, so he has committed the crime even more unscrupulously, thus advancing the time for committing the crime. Based on this analysis, we can boldly speculate that it is possible that the perpetrator will continue to commit the crime.

The third issue is the specific timing.

The time of the crime we visited, the earliest time the victim slept was 21 o'clock, and the latest time when he was found was 6 o'clock, in fact, the real time of the perpetrator was 0 o'clock to 6 o'clock, especially from 2 o'clock to 4 o'clock. We can carry out capture and wait according to this point in time. I suggest that the waiting time can be set between 0:00 and 5:00. We have already carried out this work, and Director Tang and Director Zhang attach great importance to this work, and have transferred 20 people from the special police team of the bureau to set up a special capture and waiting team. However, it is very unfortunate that the cases continue to occur, and now it seems that the reason for this result is not that our investigators do not work hard, but that the perpetrators have jumped out of the scope of our net. It is necessary for us to further study and improve the capture and waiting scheme.

Secondly, there is the issue of the number of cases. Recently, Director Tang and Director Zhang took me to pay a return visit to the cases that we had mastered, and in the process of the return visit, we found many problems. For example, a few days ago, Director Tang and Director Zhang personally led a team to crack a series of rape cases involving Lu Zhenhe, including cases in which the victim did not report the case. In the first case, on 8 June 1985, none of the investigators, including the technicians, found the doghead hat that the perpetrator had left in the toilet behind the house at the scene. In sexual assault cases, where the victim does not report the case due to various concerns, it should objectively exist. The number of cases is unclear, and it has a great impact on the judgment, judgment and analysis of the case. For this. On the basis of in-depth investigation and thorough investigation, I am in favor of conducting a return visit to the victims concerned in order to discover more clues from them.

Having said my views on past cases, I would like to share my views on future cases.

Personally, I think the perpetrators will continue to commit crimes, and they will get worse. Today, there were two cases in one day, and this is a good example. In the short period of less than a month between 16 May this year and now, four cases have occurred, and the perpetrators have noticeably increased the frequency of their crimes, which is manifested not only in the number of single crimes, but also in the fact that they have committed two crimes in a row in the same bay. This is something that was not present in previous cases. It is a new trend of the perpetrators. If we fail to solve the case in time and control the occurrence of the case, the psychology of the perpetrator will be further strengthened, and he will enter a peak period of frenzied crime, and what awaits us will be even greater pressure.

Fourth. Let me tell you about my understanding of the individual characteristics of the perpetrator and the conditions under which the crime was committed.

Judging from the current situation. The perpetrator meets the following requirements:

Male. LOCAL ACCENT, CURRENTLY HAIR LENGTH 5CM, SHORT STRAIGHT HAIR; Wear liberating shoes. Blood type B, masked experience, farmer, good climbing, walking, no transportation, left-handed, no need for money; The tools used to commit the crime include special tools for causing injuries, gloves, lighting sources, ropes, and scissors; The local accent is less common to the victim, but the language is less ......"

"Captain Li, you say slow down, you have too much information, I have to ask some places." Detachment Ai interrupted me.

"Ai detachment, please speak." I said.

"You say that the perpetrator is a farmer, but you also say that the perpetrator has no need for money, does this farmer still need money? How do you understand this? "The problem of the Ai detachment is really different from that of ordinary people.

That is to say, the perpetrator is a peasant whose family is relatively wealthy, and his motive is to commit rape and has no need for money. Of all the cases that could be joined, there was no sign of misappropriation of property, and the perpetrator had no interest in money. I replied.

"Then how is the perpetrator a left-hander?" Detachment Ai continued to ask.

"All the victims' injuries are heavy inside and light outside, from left to right, formed by the left hand, so the perpetrator is left-handed." I explained further.

Ai Detachment nodded and said:

"Captain Li, please continue."

I went on to say:

"We have cleaned up the traces and physical evidence extracted over the years and found the following traces and physical evidence that can be used:

Sperm spots (blood type B), sock prints, liberation shoes, special tool marks, fibers, glove marks, bite marks. Unfortunately, we were not able to extract the fingerprints of the perpetrators. Due to our limited technical level, the only traces that can be identified in the same way are sock prints. ”

"What advice do you have for the next step in the investigation?" Ai Detachment asked.

"Our traditional investigative method is nothing more than going from case to person and from person to case, and the investigative measures we are taking so far are basically an extension of this line of thinking.

From a technical point of view, whether it is an on-site investigation, a collusion case, or fingerprint identification, or footprint identification, it is hoped to find clues and find the perpetrator, which is from the case to the person; In a certain sense, field investigations, surveys, waiting for capture, and special intelligence diving, etc., are from the person to the case, that is, to discover what kind of person has committed the case, and from the person to the case. ”

"From what you said, isn't it easy to solve this case?" Ai Detachment asked.

"Strategically, we must have contempt for the perpetrators; But tactically, we must pay attention to the perpetrators. I replied.

"What's the best investigative measure right now?" Detachment Ai continued to ask.

"On the basis of the fact that various investigative measures go hand in hand, I believe that capture and waiting is the best investigative measure." My voice.

"Why?" The voice of the Ai detachment.

"Grasp the current situation and prevent the occurrence of crimes." I replied.

"However, practice has shown that there is a problem with this method of catching and waiting, and the case is still going on." The Ai detachment was unceremonious.

"There is nothing wrong with this kind of measure itself, but it is because of our lack of research and failure to understand the law of the perpetrators." I replied.

"Haha, Captain Li, you can answer fluently, you have theoretical and practical knowledge, and the methods and measures are feasible, which is very good! Very good! The Ai detachment finally ended the questioning.

"Thank you for the compliment." I said with a smile.

"It's good that your leader is satisfied," Director Tang said with a smile.

"Satisfied, if this answer is not satisfactory, then I am a little too harsh, Director Tang, do you think I am too harsh?" Ai said with a smile.

The two of them burst out laughing.

Please click, collect, reward, subscribe, rate, like, spread, criticize, and correct, which is my support and encouragement. Thank you! (To be continued......)