Diatoms are single-celled plants. Because the individual is too small, they must be seen with a microscope.

Ou Ye said he wanted to do a diatom experiment, so how to do this diatom experiment?

All the investigators stared at her because in the face of this academic problem, the other personnel were really laymen and had a good say in their profession.

Because the investigators learned from the girl's toe that the victim was familiar with water.

The suspect said that the victim was drowned because he avoided harm, but how could a person familiar with water be drowned so easily?

In addition, there is neither surveillance nor eyewitness at the scene. Why did a girl familiar with water be buried in the water?

Is what the suspect said true or false?

This problem is urgently needed to be solved before all case handlers.

Did the victim get into the water before his death or throw his body into the water after he died?

When drowning and dying before death, there are often signs of mushroom-shaped foam on the outside of the mouth and nose, and light corpse spots. Some corpses may also have mud and sand in their hands and other water objects.

During internal dissection, aqueous emphysema can also be detected.

When the society was being dissected, the forensic doctor found that there was a little mud and sand inside the trachea.

When they cut the trachea, they found a small amount of mud and sand inside the trachea. There was obvious swelling on both sides of the lungs, and the feeling of kneading the lungs when pressing the lungs was like that.

At that time, the forensic doctor determined that the little girl died of being in the water before her death.

If the victim died in the water before his death, what the suspect said was true. Did this little girl jump into the water and drown herself because of panic?

In order to verify the accuracy of the inference, the forensic doctor contacted the Forensic Department of Criminal Investigation University and invited the most well-known forensic professor named Zhou Tong.

Professor Zhou Tong is Ou Ye’s teacher. Ou Ye told us before that he did the diatom experiment, so he wanted her mentor to do it himself.

Diatom experiments are used in many developed countries in Europe and the United States as a very important diagnostic method for drowning before death or throwing body into water after death.

Diatoms, also known as diatoms.

It is a common single-cell organism in water. Some diatoms are tiny and have cell walls made of acid salts.

It can not only resist strong acid corrosion, but also enter the human body's large circulation and reach the organs throughout the body through the capillaries of the lungs.

The forensic doctor examined the victim's lungs, liver, and kidneys through an anatomy to see if there were any diatoms.

If diatoms are found in these organs, it can be seen that the victim still has blood circulation when he enters the water.

If diatoms are found, it can be determined that she has been in the water before her death.

If no diatoms are found in these organs, it may be that the body is thrown into the water after death.

During the previous anatomy, the forensic doctor had cut the lungs, liver and spleen of the deceased and treated them with anti-fouling treatment.

These samples will be completely carbonized after a series of treatments such as high temperature burning, strong acid corrosion, etc.

However, diatoms can be preserved intact because they are resistant to high temperatures and are protected by cell walls that are resistant to strong acid corrosion.

So, can diatoms be found in the internal organs of the deceased?

Professor Zhou Tong compared the diatoms in the water with the diatoms in the internal organs and found that there was the same type of diatoms between the two.

This shows that the deceased entered the water before his death.

The suspect Zhang was determined not to kill the victim, but he could not escape the legal sanctions because the victim died due to his indecent molestation.

After the diatom experiment, the female corpse case of the pool finally came to a preliminary conclusion. The police initially determined that after the molestation, the victim wanted to quickly escape the suspect's wrist, and ran into the pond in panic.

Maybe because he was too panic at the time and was very nervous, the victim did not grasp his water quality, fell into the pool, and was eventually drowned.

But is the case really that simple?

"Professor Zhou, we know that the results of the diatom experiment have come out. This can prove that the victim entered the water before his death. Is there a possibility that the victim fell into the water after being pinched out?"

In Professor Zhou Tong's laboratory, I asked about my doubts.

Because if the victim is pinched and pushed into the water, even if the victim is watery, there is no way to do so. How could a person who faints can float up from the deep water?

Professor Zhou shook his head and said to me: "My apprentice can answer this question."

After saying that, he looked at Ou Ye. Ou Ye glanced at his teacher, then turned to me and said, "The method you mentioned is not valid, because when Teacher Zhou was doing a diatom experiment, he found that diatoms appeared all over the victim's organs. This incident shows that diatoms were undergoing a strong cycle in the victim's body."

"What does a strong cycle mean?"

I asked this question.

Ou Ye told me: "Only when a person is active vigorously, the blood circulation in his body will accelerate and he can push the diatoms to various parts of the body. Therefore, it can be determined that the victim must be in a coma at that time."

This shows that the victim must have struggled when he fell into the water.

A person who is a good person like this can quickly get out of trouble if he is not trapped by something while struggling.

Then why are they drowned in the pool?

I suddenly had a terrifying thought: "Is there someone else at the bottom of the pool? After the victim fell into the water, the person who hid at the bottom of the pool caught the victim and then drowned the victim in the pool alive?"

"It's very possible, because we all overlooked one thing. The fiber we found by the pool before was not in line with the fibers of the suspect Zhang."

Ou Ye said so.

Professor Zhou Tong nodded, admiring his students very much. It can be seen that he is really a capable student.

Moreover, it handles many details very well. As girls, it is rare to be able to treat such a complex case so calmly.

Professor Zhou told us: "Although our forensic doctors only ask about the case handling process of your administrative staff, I still want to provide you with some advice. This case does not seem to be an occasional case, it should be a case that has been designed for a long time."

"Why do you say that?"

I raised my own question and Zhou Tong said, "Because everything seems so coincidental, just like God is destined to be just right."

Is it really a coincidence?

At this moment, Gao Wei and the others also came back. The case on our side entered another stage, and the case on Gao Wei and the others seemed to be able to be closed.

He said to me with a gloomy face: "All three colleagues died miserably, and all three of them were poked to death by branches. No one expected that they would die in this way."

After saying that, he showed me the photo.

I saw the bodies of three colleagues hanging on the tree and felt something was wrong.

Because the photos on the scene were too tragic, all the investigators in the case did not want to analyze in detail. Looking at their colleagues and dying in such a tragic way may be very difficult for anyone to accept.

I stared at the photo: "Have you discovered a very important question? Since they died in a car accident, how could they fly up the branches with their seat belts?"

After my question was raised, all the staff at the scene were frightened.

Everyone looked at me together.

Gao Wei asked in a lost voice: "What do you mean, is someone deliberately hanging them on a tree?"

"I don't rule out that they were thrown onto the tree during the car accident, but the possibility is very small. Even if they were thrown over, they wouldn't be able to hang so neatly."

Looking at the photo, the three people hung up in an equilateral triangle. The hanging look was very strange. Even if they were hung up artificially, they would not be so neat.

Gao Wei said: "But we did not find any traces of other people's activities at the crime scene. If a person commits such a big murder, it is impossible to clean the scene so clean."

"If it's not artificial, how are you sure they haven't borrowed other tools?"

I stared at the photos and found that it was becoming more and more strange.

Feeling that all this seemed to be connected, I suddenly thought of the previous family-killing case, the activity trajectory of the suspect, which had formed an equilateral triangle.

My head suddenly became hot, and I looked back at the pool where the drowning case occurred behind me, and suddenly found that the shape of the pool was also an equilateral triangle.

I suddenly exclaimed to them: "All these things are not individual cases, this is a serial murder case, and all cases have their connections, and the equilateral triangle is the one that connects them."

My words confused all the investigators present.

An equilateral triangle can tell what it means, perhaps in their minds, it may be really just a coincidence.

Why can it become a point of fit for a series of cases in mine?

Ou Ye asked me: "What should we do next?"

"We should change our investigation ideas and find the fit between all the cases. There must be some connection between them."

Looking at the several cases in front of me, the biggest point is that the real murderer has not been found yet.

Is there really only one murderer in all cases? Everyone held their breath and looked at me.

At this moment, Qing Paozi pushed open the door and walked in. He placed a stack of information on his desk: "For the past few days, I have been studying the information of these victims. After the research, I discovered a very important problem."

“What’s the problem?”

Gao Wei asked impatiently.

Qingluo looked at me, then looked at Gao Wei again: "I don't know if you still remember it. I told you before, the five elements of wealth creation?"

"Of course I remember, but is this case really related to the Five Elements?"

Gao Wei asked, Qing Paozi said: "I checked the birth dates and horoscopes of these victims and found a very strange phenomenon. Do you know what it is?"

Everyone was confused, but I thought of something and said it without hesitation: "Is it the five elements that are mutually generated and restrained?"

"You answered correctly. All victims were killed in the form of the five elements."
Chapter completed!