civil forensic

Chapter 602
The body was transported away, and Professor Chen intentionally left with the body.

He does autopsies, essentially dealing with corpses, and crime scenes are not really his business scope.

Jiang Yuan was reluctant to part with the temporary skills he had just used, and said, "I want to take a look again, but I haven't seen the front-line scene for a long time. When I go back, I have to look at the photos again."

For more than 500 minutes, if the skill is improved by 1 point, the understanding of the skill of case and crime scene reconstruction will be improved.

"Uh...Okay." Professor Chen was a little embarrassed, so he also stayed.

The smell at the scene was strong, not only the smell of blood, but also the smell of the uncleaned kitchen and dining room, which kept wafting in.

The weak light in the restaurant was replaced by a few bright headlights. The headlights were pure white and blazing like a middle-aged man's crotch full of oysters, trying to make the most of the limited time.

Jiang Yuan was calculating while observing the scene.

Compared with looking at the photos, the smell of the scene is also one of the basis for judgment. In addition, it is difficult to observe the degree of coagulation of half-dried blood, or the softness of the pooled blood from the photos.

Observing the time of death through blood is actually a very mature technology, and there are multiple indicators in multiple dimensions that can be used for judgment.

Similar to bloodstain analysis, many old detectives have expertise in this area, which is better than old scholars like Professor Chen.

In the early years, when encountering homicide cases or blood-stained robbery cases, veteran criminal policemen often needed to accurately estimate the time of death in units of hours.

In the era when there were many cases, no special practice was actually needed. After the murderer was caught and interrogated, and the time of death was determined, the bloodstains on the scene were checked in reverse. Using this method, one would soon become familiar with the relationship between bloodstains and the time of death. relationship.This can even be called the part where practice makes perfect.

Now that there are more means of handling cases, the bloodstains are not so valuable. The significance of the most special reconstruction of the crime scene is partly transferred to the camera, and part is gradually forgotten.

Jiang Yuan looked at the scene and simulated the scene in his mind.

After confirming the wiping blood under the corpse, the scene in Jiang Yuan's mind tended to be complete.

Based on his recent experience in the case, Jiang Yuan is not modest in this regard. After confirming, he said directly: "I will do an analysis of on-site reconstruction. Can everyone have a basic concept to facilitate the detection of the case later?"

"Okay." When Huang Qiangmin was selling Jiang Yuan in other cities and counties, he saw that Jiang Yuan had done a similar performance. At that time, he especially wanted Ningtai County, and he also had such an opportunity.

In the past, it was mainly because there were no suitable cases in the territory. This time, when Jiang Yuan proposed it, Huang Qiangmin seemed a little happy.

The other criminal policemen, those who had seen it before, and those who hadn't, all joined together.

Someone else asked, "Can you make a video?"

"Yes. And it must be recorded. Let two more people tag and take pictures, so that the information will be clearer later." Jiang Yuan replied, and then stood a few meters away from the corpse, saying: "I started, this is the starting point of the conflict. Mark it."

As soon as a policeman took a yellow-backed white label with No. 101 and put it at the place pointed by Jiang Yuan, the criminal technician next to him came to take pictures and recorded it. At the same time, the camera next to him continued to record without pause.

The scene is in a state where all samples have been taken.Jiang Yuan took two steps back and said:
"The victim and perpetrator No. [-] should have had a sudden conflict. In the initial stage, both parties may have restrained themselves and damaged some tables, chairs and benches. Personal injuries cannot be determined."

"As perpetrator number one lost control, he suddenly increased his strength during the confrontation, causing the victim to slam into the wall."

"The victim collapsed on the spot. At this time, the first perpetrator stepped forward to check, and at this time the first drag was formed. Because the victim's bleeding volume was not so large, the blood left by wiping was not so obvious. "

When Professor Chen heard this, he couldn't help but stepped forward to observe, and said directly: "I didn't notice the blood was wiped here just now."

Jiang Yuan nodded, leaned over and pointed, and asked to take a picture again, before saying, "Later, the wiped blood was covered by a pool of blood, but because the pool of blood formed relatively late, we can still make some judgments."

Professor Chen watched carefully and nodded slowly.Although he has been away from the front line for a long time, Professor Chen knows in his heart that even if he is in the peak state, it is not easy to discover this.

The blood pool was more than an hour later than the wiping of the traces, so there were different shades of blood on the bloodstains. This alone can explain many problems.

Jiang Yuan said at this time: "Actually, if you look carefully, the pool of blood is formed twice."

Professor Chen was surprised. He had been a teacher for too long, and he habitually refuted: "You can't infer evidence from the results. There is no need to make this judgment. Even if it is a pool of blood formed by two pools, it is difficult to say that they are two Forming."

Jiang Yuan did smile and said, "I judged from the insects."

"kindness?"

"When the first small pool of blood was formed, insects like ants came over to wade in the muddy water." Jiang Yuan described it briefly, squatted in front of the pool of blood, and looked again with a horseshoe mirror , said: "These small scratches are actually left by ants and other insects wading over. Then they were covered by the blood later."

Professor Chen looked at it hard for a while, and said helplessly, "I'm getting older, and my eyes are not working anymore, so I can't see clearly."

He didn't fully admit it, but he couldn't deny Jiang Yuan's point of view.

Jiang Yuan is no longer a student in the school, and he doesn't need to be recognized by Professor Chen. He then walked a few steps and said, "This is probably the escape route of the first perpetrator."

Because perpetrator #[-] is currently mentally ill, this roadmap is not easy to verify.

Jiang Yuan didn't say anything more about it. Strictly speaking, Han Shengyan, who had surrendered himself, was no longer a problem.Unless he really hadn't done it and was just talking nonsense because of a mental illness, otherwise, the part that required the person in charge of Han Shengyan didn't need much evidence to support it.

Moreover, considering that most of the outside of the restaurant is hardened ground, and some stores also have external cameras, etc., if you look back carefully, you should be able to find Han Shengyan—the mental patient will definitely not engage in too much anti-reconnaissance flower head.

"Where's the second perpetrator?" Liu Wenkai of the Second Squadron listened with a surge of emotion, anxious to know the follow-up.

Jiang Yuan walked back to the position opposite the original corpse, and said, "The number two perpetrator should have come here about an hour and a half after number one."

Jiang Yuan took two steps forward carefully, made a motion of imitating bending over, put his hand forward, and said: "This is where the second dragging occurred. At this time, the victim didn't bleed a lot. Look at the wipe. You can see the bloodstains."

"The second perpetrator checked the victim's situation at this time. He probably had a conversation with the victim. At least the victim was alive at the time, otherwise there was no need to attack again."

"The victim was traumatized to the back of the head again and died."

……

Jiang Yuan explained several more detailed points in detail, and then directed the technicians to take samples again, and the on-site survey was truly completed.

Everyone went back to the house, the criminal department personnel processed the evidence, and the criminal police attacked everywhere, and began to probe the victim's interpersonal relationship.

Professor Chen and Jiang Yuan hurried to the funeral parlor to dissect the corpse at night.

The most important thing to check is the wound on the back of the victim's head.

Together, the two of them quickly peeled off the scalp of the corpse under the encouragement of Wu Jun's incense.

Looking at the scalp first, you can see a rectangular central control contusion, and some exfoliation.

The peeled scalp is very thin, its thickness and feel are similar to a leather wallet, it is a little slippery, and after being soaked with a little saline, it also has a certain degree of toughness.Doing so will help to re-sew the body back together later.

In addition, there are some debris near the scalp, which are also collected and left for inspection.

"It was indeed multiple blows." Jiang Yuan scraped the skull and gave a positive conclusion.

This time, Professor Chen was much more confident, and said: "And they were hit on a flat surface. If you look at the position in this way, the No. 2 murderer probably lifted the victim's head and hit it hard."

"Well, the No. 2 perpetrator is likely to have a strong relationship with the victim." Jiang Yuan heaved a sigh of relief, and said to Mu Zhiyang who was waiting next to him: "Check the relationship network, and it is likely to be rewarding."

(End of this chapter)