civil forensic

Chapter 422 Reliable
Kang Zhichao picked up the photo Jiang Yuan handed over and read it carefully.

After watching for a while, he took out his laptop from under his seat, logged on to the intranet, and looked through the previous autopsy reports and photos.

Feng Qiong waited for him for almost 10 minutes.

During this time, not a single person in the conference room spoke.

The answer Jiang Yuan gave had too much influence.

The identification of the time of death is extremely important not only in forensic science, but also in criminal investigation practice.

For example, half of the well-known "perfect murder" in mystery novels used "alibi", that is, the use of the time of death.The murderer used refrigerators, air conditioners, meter adjustments, and shortcuts...

Among them, most of the murderers met forensic doctors who were too responsible and of average level.So much so that they always give an accurate time of death to facilitate misjudgment by the police.

In fact, it is basically impossible for a normal-level forensic doctor to accurately determine the time of death to the hour. For the death within 24 hours, it is very reluctant to say a figure of 8 to 10 hours, or 3 to 5 hours. After all, there are data such as liver temperature to support it.

Once the death exceeds 24 hours, it is difficult to give a more accurate value.It's not completely impossible, but the technology used is beyond the grasp of ordinary forensic doctors.

Feng Qiong couldn't wait any longer, and turned to Kang Zhichao, "How is it?"

"and then?"

"Turn on the hands-free." Feng Qiong rubbed her eyes and stopped pretending.

"Ask who?"

"Old Tao." Kang Zhichao glanced at the laptop and said, "I'll paraphrase his original words, just one sentence: so awesome? Interrogative sentences."

All kinds of emotions, all kinds of ideas, and all kinds of realities flowed in the conference room.

"There are a lot of people." Old Tao barked and asked, "Well, is Jiang Fayi who you mentioned just now?"

Kang Zhichao connected the phone and said, "Old Tao, turn on the speakerphone, we are in a meeting. Next to me is Feng Qiong, several leaders of the Miaohe County Bureau, and related police officers."

Kang Zhichao looked up and found that everyone was looking at him, so he said, "I'm asking someone too."

As far as the 503 case is concerned, if the first victim is a policeman with a gun, then in this case, there is a high probability that the two criminals stole or snatched the gun, then killed the victim, and took the gun to try more and more efficiently. robbery.

The two spoke in front of everyone, and there was no intention of covering up the content. A group of county police officers who were listening looked at each other in blank dismay.The leader who dared to love the ministry, but the case couldn't go on, and the action of dumping the blame turned out to be like this?

He knew Lao Tao's pain points.Although forensic medicine is very practical, but when it comes to such details, in the final analysis, it is still an academic thing.

This case has now reached a fork in the road. If it proves that Jiang Yuan is lying, then he will take it back clearly and continue to investigate in Miaohe County.If it proved that Jiang Yuan was not talking nonsense, then they should leave Miaohe County. At this moment, it would be meaningless to pay attention to image and majesty.

For the Miaohe County Bureau, it is true that there are fewer opportunities to make meritorious deeds, but one thing to say, is this kind of opportunity given by the small Miaohe County Bureau able to grasp it?

He picked it up to look at it, and said, "Old Tao's."

"I saw the two photos you sent, about the cornea... I didn't see much difference..." Lao Tao was obviously looking at the photos on the other end of the phone, but his voice was not sure.

Lao Tao let out an "ah" and said, "I don't have a conclusion. If you want to ask me if I can see the time difference between the two, I really can't be sure in the photos. But, you asked me to deny this judgment, I can't do it either. I know I'm talking about the wheel, I'm only one, but..."

Old Tao paused for a moment, then said: "I am relatively speaking, I am more inclined to the conclusion that the second victim died first. However, this specific judgment, especially the time of death, I think I should discuss it with Forensic Doctor Jiang. Doctor Jiang?"

Kang Zhichao's phone vibrated.

At this time, Jiang Yuan, with LV6 identification skills of the time of death, naturally knew the difficulty of identification for lower-level forensic doctors.It's like a great teacher teaching a class and knowing the pain points of the students very well.

But look at this question from another angle: If there is a technology that can simply and crudely identify the time of death of a corpse, these scientists have burned out their brains, so they use various methods to do the identification?

At this time, in order to solve the case positively, more consideration must be given to the first victim. It can basically be determined that the perpetrator went for the gun.

"I'm here." Jiang Yuan responded, and said: "From the photos, the time of death of the two is indeed relatively similar, only about an hour apart. I think the specific time can be compared through the cornea .”

Because if it is a murder, you can choose a time when the policeman is not holding a gun, and there is no need to carry out multiple subsequent robberies.

Then, following the idea of ​​grabbing guns and killing people with robbery as the direction of criminal investigation, it is natural to consider the disposal of property, the murderer's familiarity with the police with guns, the planning of the robbery route, the planning of the robbery method, and the follow-up The planning of the robbery plan and so on.

"Beside me." Feng Qiong said directly: "Old Tao, you can just say the conclusion, don't worry about it."

There are many similar cases. For example, the famous gangster Baibaoshan started his robbery by attacking the sentry and grabbing the gun.

Jiang Yuandao: "The state of the cornea is close, which is actually the problem. If you look at other photos, the policeman with the gun has his eyes open after his death, and the eyes of the second deceased are closed. In addition, after the death of the second It should be put into the rear compartment. In a relatively anaerobic environment, the excess lactic acid produced by the corneal epithelium will cause swelling and turbidity of the corneal stroma. The environment in the trunk is airtight, and the corneal turbidity will appear sooner. In addition, when No. [-] opened his eyes, the moisture in the cornea evaporated faster, and the corneal turbidity appeared slower. In this, the degree of corneal turbidity has changed, and we have to compare it..."

Director Guan Xingfu glanced at Jiang Yuan unconsciously, and thought: In comparison, it might be more reliable to find a dog for Jiang Yuan.

Feng Qiong was helpless, exhaled, and asked, "What did Lao Tao say?"

woohoo...

In this way, the direction of criminal investigation based on the idea of ​​seizing guns and killing people is tantamount to a total waste.For the investigation of the second victim, it is necessary to rethink from the perspective of seeking people or seeking money.

The information that forensics can rely on is basically non-standard.Such as liver temperature, insect species and intergenerational relationship, rigor and cadaver spots, microbial community changes, red blood cell ATP degradation degree, and even infrared Fourier transform of skin after death, can be used to determine the time of death identification.

"Have a cigarette."

"Old Tao." Kang Zhichao paused, before saying, "I'm a half-baked forensic doctor. I learned it later. Let Lao Tao take a look."

"That's right. What else?" Feng Qiong knew that his colleague was a little silly, but there was no other way. Even if you were in a ministry, you couldn't expect a colleague to be skilled, good-natured, emotionally stable, good-looking, indifferent and clear-minded, and hard-working. Hard work, the so-called impossible hexagon is also.

"Did you ask me?" Kang Zhichao was still carefully looking at the photos in the notebook.

The old man on the other end of the phone let out an "oh", and then fell silent for a long time.

However, if the first person killed by the murderer is actually the second victim, the situation is reversed in an instant.

"Gone."

If this case goes according to what Jiang Yuan said, Feng Qiong and others should go back to Anhai City and use the manpower of the Anhai City Bureau to investigate and collect evidence in Anhai.

It's better to get out early.

The director handed Feng Qiong a cigarette, but he was not in a bad mood.

As the saying goes, poor students have more stationery.For the calculation of a numerical value, the more technologies and methods are developed, it means that the numerical value is difficult to calculate accurately.

Kill the second victim first, and then kill the first victim, which means that the murderer's original target is probably the second victim, and the first victim, as a policeman with a gun coming home from get off work, is more likely to have bumped into The murderer was killed in a conflict.

As for cases with longer deaths, the more precise the requirements, the higher the difficulty.

Feng Qiong waited for a few minutes, then said helplessly: "You technical people, how can you talk without making a sound?"

Lao Tao hissed, as if waking up, and said, "Old Kang, what do you say?"

Kang Zhichao who was asked didn't answer, and said, "I'm doing the trace inspection, you have the final say."

Lao Tao also did his part, laughed twice, and said: "Then I will follow Feng Chu's request and say the conclusion first. Awesome!"

(End of this chapter)