National Forensic Doctor

When doing a murder case, the biggest fear is that there are no clues.

As long as there are clues, there is no shortage of manpower.

It's like someone used a gun to kill a family and then ran up the mountain. A search team of thousands of people could be organized in the local area in minutes.

Many murder case task forces organize large-scale investigations, sometimes just to use the human resources at hand as much as possible. Regardless of whether it is sufficient or not, whether it is necessary or not, at least let the members of the task force have something to do.

Having nothing to do was a huge blow to the morale of the task force.

Jiang Yuan submitted the clues, and the 724 Qinghe Major Homicide Task Force sent people to start the investigation overnight.

18 years old is a senior or freshman in high school, and studying ballet proves that the family conditions are good, so the deceased is probably still a student.

After pulling out the list of missing students in Qinghe and several surrounding cities, and adding the attribute of having studied ballet, even if it goes back several years, the list is only one person.

Zhang Xiaoyun.

He is from Jianjiang City and a student of Jianjiang City No. 1 Middle School.

Jianjiang City is adjacent to Qinghe City, and its economic level is not much different from Qinghe City. There is only one training institution teaching ballet in the city, so it is very convenient to find one.

But after the DNA comparison and matching, members of the task force were still a little scared.

Purely because the condition of ballet is too narrow, they can easily expand the search scope to several nearby cities... and this once again proves one thing:

The murderer didn't just stick to his local area to kill people.

This is very inconsistent with modern trends.

The current business atmosphere and cultural atmosphere are all about localization and are beginning to focus on circles.

Even blind daters have begun to add the first 6 digits of their ID number in front of the requirements for owning a car and a house.

Killing someone without looking at their ID number...

Of course, it is easy to understand if a murderer is a little rebellious.

But the members of the task force had to start self-reflection:

The murderer doesn't pay attention to localization of his killings, so how wide is his scope?

This is no joke.

The murderer's murderous psychology will change according to the environment.

Some murderers will become unscrupulous and aggressive when they are away from home, but when they return home, they can still be obedient, eat and drink when they should, and they will not change at all despite being beaten by their wives or angry with their leaders.

Some murderers specialize in killing people in one place, and this is the mainstream. Especially for those who like to dismember bodies, most of them will be dismembered at home.

Reality often responds to this choice in a strange way.

A typical case is Jia Wenge from Nehe City. He and his team members killed 42 people locally. They worked for more than three years and attracted a special task force, but nothing happened.

In order to avoid the limelight, he ran away to Hangzhou. After doing a few jobs, he didn't even dare to kill anyone, so he was arrested and shot dead three months later.

The murderer of Case 724 is said to be familiar with the reservoir and has dumped corpses here all year round. He should also be local.

But the only source of corpses was not local.

Deceased No. 1 came from Wanxiang City in the far west of Shannan Province. It is very likely that he died in Qinghe City while on a business trip. But it is also possible that he died outside Qinghe City, such as Jianjiang City.

Now, deceased number 5 was directly a student in Jianjiang City. His mobility was limited, so he probably died in Jianjiang City.

So, the murderer lives in Jianjiang City, which is adjacent to Qinghe City?

It is not unusual to specifically abandon corpses to the next city. Anyone with some counter-reconnaissance capabilities knows that this will increase the difficulty of detection. Ancient bandits also knew to choose a place at the junction of three provinces.

For the task force, the difficulty seems to have really increased.

For two days in a row, the conference room of the Qinghe City Bureau was filled with the sounds of various quarrels.

Fortunately, Jiang Yuan no longer has to go to meetings.

He stayed in the anatomy room and studied bones every day.

These corpses have been soaked in water for a long time, and most of the skin and flesh have rotted away. The exposed bones have been soaked in a large amount of corpse water, and the color and texture of the bones have changed to varying degrees.

This change is not a problem for some basic judgments.

Just like determining gender, the pelvis is the most useful, but it is not indispensable. The hip bones are equally good and good, and there is no problem with the skull. The mandible, sternum, and femur can all be used.

On this basis, even if the bones have been soaked for a long time or eaten by some microorganisms, they will not have much impact.

But it is obviously more difficult to further determine the source of the corpse.

The remaining corpses No. 2, 3, 4, and 6 each have their own complexities.

The four dissecting tables in the dissecting room display exactly four corpses.

Wang Lan assigned a corpse to each of the forensic doctors, but he only crossed Jiangyuan.

The first two corpses all relied on Jiang Yuan's judgment, so his knowledge of forensic anthropology was obviously sufficient for the job. Maybe even far above everyone else.

Wang Lan couldn't do much more than give him full trust.

On the first day, Jiang Yuan paraded in front of four corpses.

After that, Jiang Yuan spent more and more energy on the skeleton No. 3.

Bone No. 3 is the bone that was chopped with an axe.

The lumbar vertebrae and leg bones of this corpse were severely worn. Jiang Yuan initially judged that the corpse was engaged in physical labor.

Of course, there is no problem with this judgment, but the scope is too large, and it is basically impossible to find someone for this.

Initially, Jiang Yuan was prepared to study the traces of the axe.

If you can determine the type of axe, you can still get some clues even if you can't solve the case. For example, not many people buy the fire axes or small axes used for cutting firewood, which are common nowadays.

Facts have proved that Jiang Yuan still underestimated the tool mark inspection. With his skills in this area, he could not find out the origin of the axe.

Judging the time of death...this path is naturally even more impossible.

The underwater world is a closed world. For a corpse that has matured for such a long time, in order to determine the time of death, one usually has to seek help from the outside world. For example, look at how many generations the maggots have reproduced and how long the algae has grown...

Not to mention that the conditions are not quite met, but even if they are met, the time of death can only be estimated in years.

In fact, the determination of time of death is the most difficult and profound part of forensic medicine. In other words, it is the most inaccurate.

If you encounter a corpse that is fresh and still hot, and the liver temperature and rectal temperature can still be passed, measure it. The old case is as old as it is now, the liver is gone, the anus is gone, and the microorganisms have not been replaced...

In the end, what Jiang Yuan could study were the simplest traces on bones.

Theoretically, bones can provide a corpse with many traces of its life, not only life, but also work, disease, or environment.

An example suitable for modern people. If 20 people were killed in the subway, the skin and flesh were cooked, and only the bones were observed, what would be the most common traces of the bones?

The incidence of excessive wear and tear on the cervical spine must be extremely high.

Jiang Yuan had already seen the wear and tear on the lumbar vertebrae and leg bones of Corpse No. 3. After further observation, he finally judged that the wear and tear on his knees, tibia, and even heels should have come from daily life or occupation.

It's just that what kind of profession can wear down these positions makes Jiang Yuan a little confused.

He thought about the time for instant noodles. Without thinking clearly, he called Liu Jinghui directly.

In Jiang Yuan's opinion, Liu Jinghui, who is engaged in reasoning, may be of some use at times like this.

Liu Jinghui, the fourth-level senior police sergeant of Shannan Provincial Department, rushed to the autopsy room after receiving the call.

Jiang Yuan found him a protective suit and said, "You don't actually need to come over. We can just talk on the phone."

Liu Jinghui shook his head: "There are many things that you have to see in person to understand clearly."

"Okay." Jiang Yuan led him to the dissecting table No. 3, handed him a tibia, and said, "See for yourself."

The tibia is the lower leg bone, or to be more precise, the relatively large inner bone of the lower leg.

It is very hard and can be held with just one hand - the smart ancients discovered the properties of the tibia very early, so thousands of years ago, they ground the tibia into a dagger with a slit in the middle. The blood tank.

Judging from the shape of the unearthed cultural relics, the tibia is still very good as a dagger material.

However, just as evidence, Liu Jinghui looked over and over for a long time and saw nothing.

"Explain it to me." Liu Jinghui sighed.

Several forensic doctors also quietly came over, wanting to hear Jiang Yuan's live lecture.

"The wear is mainly here. The bone has become rough." Jiang Yuan held the tibia in his hand and showed the selected side to Liu Jinghui.

Liu Jinghui still didn't see it.

"So I said, just talk on the phone." Jiang Yuandao.

"It's not that far anyway." Liu Jinghui argued, then turned his attention back to the body and asked, "What actions did you use to make the wear and tear you mentioned?"

"Maybe squatting often." Jiang Yuan said and simulated.

Liu Jinghui looked carefully and nodded slightly: "Knee, tibia, heel."

Jiang Yuan nodded: "It's a pity that he is a man. If he were a woman, she might be in the service industry."

"Ouch..." Liu Jinghui clicked his tongue twice and looked at Jiang Yuan: "You know very well. As expected of a Jiangcun native, at such a young age..."

"I'm talking about attendants, like shoe sales, or first class flight attendants."

"Men can also do these jobs. Should gender be so restricted?" Liu Jinghui joked first.

Jiang Yuan pouted: "Heavy physical strength."

"A first-class flight attendant who often carries luggage. Or a part-time shoe salesman at a courier delivery point at night?"

"I'm just giving an example." Jiang Yuan shook his head and said, "Judging from the age of the deceased, his daily squatting time is much longer than that of selling shoes."

"Welder?"

Jiang Yuan hesitated for a moment, nodded and said, "It's possible."

"Athletes in some kind of sport, like skiing?"

"Also a possibility."

Liu Jinghui guessed a few more professions and almost understood Jiang Yuan's judgment.

"This murderer kills people very casually." Liu Jinghui sighed.

Jiang Yuan said "Yes", placed the tibia, looked at the other corpses, and asked Liu Jinghui, "How is the task force doing?"

"It's just chicken feathers all over the place." Liu Jinghui said in a deep voice.

"Didn't the provincial department send you to provide staff and command?" Jiang Yuan looked at Liu Jinghui.

"My judgment is that this person probably committed the crime randomly." Liu Jinghui also looked at Jiang Yuan: "Do you know how to solve this kind of case?"

Jiang Yuan shook his head. Random crimes account for more than half of the backlog of homicide cases in various provinces, and it is not without reason.

"We have to pile up known conditions. We need to find order from disorder and list the known conditions. This is the most basic step." Liu Jinghui said: "I called two more teams of frogmen to see if there are any. Are there any bodies in the reservoir? If they can’t be retrieved, the few existing bodies are all we know.”

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