Chapter 937

"Regarding the case, there is a new situation to report to everyone."

When Liu Jinghui appeared in the meeting room again, his hair was disheveled, he carried the sour smell of not having bathed for a long time and the fresh smell of instant noodles, and his face was oily. In short, he looked like an ordinary criminal investigation police officer on a special task force.

Jiang Yuan, Huang Qiangmin, Captain Lang Heng, Su Shanming, and others sat together at the other end of the conference table, waiting to hear Liu Jinghui speak. Others were either sitting or standing, and some were even straddling their chairs to watch—it was the very picture of an authentic case analysis meeting.

The special task force had pulled back many criminal investigators who had been sent out to investigate. This was the so-called action of gathering the fist to prepare for a strike, and it could also be considered as sacrificing many of the initial investigation results in preparation for a larger goal. But regardless of which one it was, it represented the special task force's emphasis and the correction of the investigation direction.

Many members of the special task force had things to say about this—most criminal investigators were still more familiar with and accustomed to the forward-looking, conventional investigation mode. Especially the older special task force members who joined later, their familiarity with Jiang Yuan and Liu Jinghui was limited, and they were anxious about Case 430. Being able to suppress their emotions and not express opposition immediately at this moment was already the sophistication cultivated over many years of work.

Liu Jinghui began to describe the latest progress of the case slowly, supplemented by his own ideas and Jiang Yuan's technical analysis.

This day and more had allowed Liu Jinghui to organize his thoughts properly, and at the case analysis meeting, doing case analysis for the local criminal investigation team was Liu Jinghui's old trade.

After Liu Jinghui explained it in simple terms and polished it carefully, the expressions and attitudes of the special task force members had completely changed.

Liu Jinghui looked at their faces and was very familiar with this kind of expression.

At this moment, seeing that no one had stood up to pick faults yet, Liu Jinghui released the big move he had been holding in his hand, carefully explaining Jiang Yuan's analysis of the lock cylinder.

"Does this count as evidence?" Su Shanming heard such an analysis for the first time and, like Liu Jinghui before, was very surprised.

Liu Jinghui looked at Jiang Yuan and smiled: "Team Leader Jiang, why don't you tell us about it."

Jiang Yuan then spoke briefly about the identification of the marks inside the lock cylinder, and added: "This is a judgment I made during the mark identification. I can issue a mark identification report later."

Jiang Yuan knew what the police liked most.

"This judgment is good! This kind of mark was covered up and then new marks were added; I expect we'll encounter this in the future too!" Su Shanming praised repeatedly.

Liu Jinghui coughed twice and said: "This is a mark identification report that only Team Leader Jiang can issue well. If you have similar trace evidence, you have to find Team Leader Jiang to issue a report."

An old policeman nearby frowned as he listened: "Is this a relatively special situation?"

The implication was to ask whether Jiang Yuan was faking or slacking off.

Jiang Yuan shook his head and said: "I will write a paper later and publish it in a journal, and the identification report will also be attached. The difficulty of the identification inside the lock cylinder this time is slightly higher; there's nothing else."

This explained the issue of the authenticity of the identification. As for the difficulty and so on, there was no need for Jiang Yuan to talk about it.

But the criminal investigators present could understand most of it.

Detecting some hidden thoughts or concepts from the content, tone, voice, and body language of others' speech was a basic operation for criminal investigators.

Huang Qiangmin even chuckled, curled his lips slightly, and thought to himself: In the future, there should be a control line for these things that require high-end reports. Always letting people get a free ride makes it easy for people to misjudge the value of others, which is detrimental to others establishing correct values and also detrimental to the overall development of society...

Huang Qiangmin thought far ahead all of a sudden.

At this time, Liu Jinghui finished the explanatory part and began to talk about the substance: "This is the list I organized. The list is mainly composed of several parts. First, the first part of the list is everyone who has ever come into contact with the key. This part is mainly based on the recollection and narration of the victim's husband, Mai Zuqing, plus the recollections of some of the victim's relatives and others. The main composition is the victim's family, several relatives from both parents' sides, several of Mai Zuqing's colleagues, and several of the daughter's best friends."

"The second list is an expanded list, which means we are not sure whether they have come into contact with it, but we believe they have the conditions to come into contact with the key. For example, some of the daughter's classmates—she might have left the key in the classroom during physical education or other classes. Given the management style of the class at that time, basically, all classmates could be considered to have the possibility of contact, and some teachers were the same. But classmates from other classes usually couldn't. In addition, some of Mai Zuqing's colleagues, some relatives who often visited, the beauty salon and barbershop that the deceased Sui Yingxue often went to, etc., were also included in this list."

"The third list is the surrounding personnel with criminal records, including juvenile delinquents who have been punished."

"The fourth list is personnel who once lived nearby or worked nearby and have experience or learning experience in cutting keys. Although the key was polished many times and didn't look very professional, we consider that on one hand, this might be a problem with the source of the key cutting, and on the other hand, key cutting might also require relatively professional equipment?"

Liu Jinghui stated the considerations in several directions in one breath, and the list he listed was also a dense string.

The investigation 10 years ago had laid a good foundation, and basically recorded the personnel near the victim's residence. Even so, the list Liu Jinghui listed still had a number of people that exceeded imagination—of course, it exceeded the imagination of ordinary people.

The criminal investigators present were very calm. For the third opening of Case 430, if they didn't screen tens of thousands of people this time, the leaders would feel that they hadn't used their strength. Although Liu Jinghui's list was quite long, in everyone's view, it was completely within a reasonable scope.

"How should we screen them?" Captain Lang Heng asked a key question while Liu Jinghui was thirsty from talking and drinking water.

You can't interrogate everyone on such a long list. Even if it's an interrogation, it can't be a protracted interrogation. There must be some key points for criminal investigators to grasp.

Of course, if there is really no idea and you have to use time to exchange for space, then send people to visit according to the list, which is also called visiting, and it was a magic weapon for investigating cases in the early years.

"In fact, our list can be made smaller." Liu Jinghui paused and said: "I think geographical factors are a very important factor. Think about it, if the killer tried to open the lock many times and still had the leisure to go back to file the key and then open the lock again, in this process, they must live closer to the victim's house to be convenient."

"Is this kind of person a pervert?" A criminal investigator shouted: "The purpose might be burglary or molestation, but he is an impotent or premature ejaculator, and it got into his pants."

Liu Jinghui nodded: "There is indeed this possibility, but think about it, can't a pervert find a suitable target near his own home? Is he that picky?"

"Is the victim his 'white moonlight'?"

"Then the relationship between the killer and the victim would be relatively close, and it is very likely that they are strongly connected." Liu Jinghui lightly refuted and added: "Ordinary perverts commit crimes in places where they are convenient, familiar, and feel safe, which is more in line with common sense. I recommend a visiting investigation method that gradually expands with the victim's home as the center!"