National Forensic Doctor

Early morning.

The group of people drove more than a hundred kilometers to Yueyang Village.

Some police officers are responsible for finding as many surveillance videos as possible, and then sending a car back to the criminal investigation detachment. Some of the remaining people continue to look for surveillance, call the contact person, and then pick up the surveillance. The others followed Jiang Yuan to re-investigate the crime scene.

Now it can be basically concluded that this case is a normal criminal case involving luck. Liu Jinghui did not give any extra instructions to increase manpower. He just waited in the office of the detective brigade when he was full.

Occasionally, Liu Jinghui would be willing to go to the crime scene to take a look, which would help him build a crime concept. But this time the crime scene was also carefully investigated. Jiang Yuan's second investigation was really nothing fancy. In other words, Liu Jinghui would never be able to see anything that Jiang Yuan could see, so he would not join in the fun. .

The night is dark.

There were more and more people in the office of the Scout Brigade.

The detectives in the picture investigation were also called over at short notice. This is a relatively rare situation for the picture investigation detectives at the level of the brigade. They usually only stay up late and work overtime on major cases, or when the leader's friend lost his bag. will appear. In normal times, the higher the level of the unit, the more standardized the work and rest. At the detachment level, everyone can basically work normally.

Unless, it is when a super expert like Jiang Yuan participates in investigating the case. When the first batch of surveillance videos were retrieved, Yu Wenshu rushed over, not to mention other police officers.

The so-called practice means not to look at what the leader says during meetings, but to look at what he will do next. If the leader likes to chat with beautiful female subordinates, then the opportunity for beautiful male subordinates... must be sought from an intermediary... If the leader usually respects a certain technician very much, then the subordinates will think too much when putting on their little shoes. think.

Yu Wenshu spent so much money on Jiang Yuan, and also seconded so many elite police officers to Jiang Yuan's special case team. This kind of investment would be a pain in any detachment. This in itself It can also explain Yu Wenshu’s choice.

Two o'clock in the morning. Jiang Yuan returned to Changyang City and went straight to the detective brigade.

He slept twice in the car on the way back and forth. At this time, he was still in good spirits. He entered the office, took a few sips of water, and said, "Li Yanmin's residence cannot be ruled out as the first scene."

This statement sounds no different from the previous judgment, but it is actually different. The police officers present all know that "not ruled out" is a slang term for technical police. With a little translation, it is possible, but I can't find any evidence.

It sounds a bit unreasonable, but in fact, evidence itself is a high requirement. It is a requirement that the public places on the police based on their need to protect themselves. It is not the only standard.

Deciding a case without evidence will definitely lead to unjust, false and wrongful convictions. But as human police officers, it is not that they can only make judgments based on evidence.

This is like a student who, after listening to a semester's lectures, can still make an easy judgment: XX is a bad pen even if he can't find any definite evidence!

Or a professional person may only need a week to point out without any evidence: except XX and XXX, the rest are pure sand dollars!

When Liu Jinghui heard that there was no evidence, he became excited and said, "Tell me in detail."

Yu Wenshu, Ma Jiyang and others also sat upright to listen to the lecture.

Jiang Yuan considered his words and said: "Based on the on-site investigation, the bedroom where the victim lived probably had a carpet laid beside the bed. Because the marks on the ground were not very uniform. I guess that Li Yanmin was hit After writing it down, he fell down on the carpet, and the murderer rolled it up and took him away."

When Jiang Yuan said this, he spread his hands again and said: "But there is no way to be sure about this. The time apart is too long, and the sunshine time in his room is quite sufficient."

"Is there any fiber evidence on the victim?" Liu Jinghui is also knowledgeable.

"If it is a wool carpet, it cannot survive in the reed marsh." Jiang Yuandao: "It has basically decomposed after such a long time. Wool, a natural polymer fiber, is easily decomposed in a hot and humid environment. Coupled with the fact that it has rained for several days, the remaining wool is easily washed away.”

"Wool carpets are expensive, but the more expensive the material, the more useless it is." Ma Jiyang couldn't help but sigh.

Mu Zhiyang answered on his behalf: "Maybe people who buy wool carpets don't plan to die on the carpet."

Ma Jiyang raised his thumb: "What you said makes sense."

"Another key point." Jiang Yuan emphasized and said: "Although Li Yanmin's bedroom was once covered with carpets, no one knows whether there were carpets before his death. Li Yanmin himself and his relatives We have very few relationships, and the few female friends we have talked to have almost never developed into girlfriends.”

"Then how to solve his physical problems?" Liu Jinghui immediately noticed this key issue.

Jiang Yuan was stunned for a moment, briefly recalled the scene, and said, "I didn't see anything for personal use, but there were two boxes of condoms. Can you deal with it yourself?"

"Perhaps he has some secret old sweetheart?" Liu Jinghui didn't know what he thought of. He smiled, and then said seriously: "A traitor is almost killed, a gambler is a thief. He can't be killed for no reason. If If you commit adultery, it’s easy to explain.”

"What does adultery mean? The woman is a married woman. Is it so exciting? If you don't find a girlfriend, find someone else?" Wang Chuanxing found it exciting just thinking about it.

"Maybe it's true love?" Mu Zhiyang said to him.

"True love should lead to divorce. In this age, what's the big deal about divorce?"

Liu Jinghui snorted: "Maybe it's my brother's uncle's wife? Is Tang Xuanzong so easy to be a wife?"

"Can it still be like this?" Wang Chuanxing wanted to say that he didn't understand, but Tang Xuanzong's examples had come out, so there was nothing he didn't understand. He just suddenly realized it with confusion.

"So, don't think that there are only trivial things in the village. That's because you don't understand the things in the village deeply enough. If you understand deeply enough, you will know that there are many things in the village because of trivial things, and there are also things that insult your father and seize land. Brother Xie The life-and-death feud between a flirtatious sister-in-law and a dramatist who bullies her mother." Liu Jinghui also broadened the horizons of young police officers, and even touched on it briefly.

After slowing down, Liu Jinghui continued: "Of course, this case went from being committed by an acquaintance to being committed by a stranger. Now it seems that it is likely to return to being committed by an acquaintance. For now, we can only watch the surveillance video first and wait. Tomorrow morning, I will visit the village and ask people to see if this is the case."

"Then let's start watching the surveillance." Jiang Yuan held a pot of ginseng tea, sat behind the monitor wall, and let the policeman start the operation.

Jiang's father occasionally researched health issues. He called Jiang Yuan during dinner. Knowing that he would have to stay up late to work today, he immediately called a familiar tea shop in Changyang City and cooked ginseng tea and sent it over.

Jiang Yuan naturally wouldn't refuse, so he drank tea and waited to see the surveillance video.

The quality of the surveillance videos collected in the village varies greatly. Not to mention the clarity, many of the surveillance videos are installed in inappropriate locations, and some even fail to capture the entire license plate.

The graphic reconnaissance team also has corresponding software to read these videos, especially vehicle-related video surveillance recordings. There are already relatively mature solutions. Common ones include identifying stolen vehicles, vehicles without license plates, or vehicles with obscured license plates.

In addition, the trajectory of the vehicle is also one of the criteria for judgment. For example, some vehicles suddenly slow down, or detour in a certain place, or pass through an intersection multiple times, etc. These are all relatively unobtrusive when viewed manually. It is difficult to find, but if the software reads it, a list of suspicious vehicles can be listed in a short time.

Jiang Yuan also gave priority to looking at these suspicious vehicles. After looking at them, he screened out a few more suspect vehicles, recorded them aside, and then took a closer look at the vehicles that afternoon.

He now has a clearer estimate of the time of death, but he has not stated it because the death situation of this corpse is too complicated. The accuracy of the estimate is only 70% at most, but this does not prevent Jiang Yuan from making the first decision at this time. time period and devote more attention.

suck……

slip……

Jiang Yuan drank ginseng tea and wrote down the license plate numbers of suspicious vehicles from time to time. There are many reasons for suspicion, including but not limited to the direction of the vehicle, the type of vehicle, the number of people in the vehicle, etc.

There are as many as a hundred license plates recorded by him. When it gets dark in the morning, the police will follow this list and visit these car owners again.

If there is no result from this visit, Xu Taining may be called to join the war.