Chapter 67: Evidence in Instantaneous Cavities
Mo Ziqian's autopsy process generally doesn't like Mu Sen's participation...しw0. Mu Sen once asked the reason, and the answer given by Mo Ziqian was that there was an outsider who would be distracted. Moreover, Mo Ziqian also said that looking at the process of dissecting the body more often will change the mindset of the human body to a certain extent. He hopes that at least one of them can maintain a normal psychological state for the human body structure...
Therefore, every time Mo Ziqian really starts to have an autopsy or autopsy, Musen will leave with all his heart. This time, it is no exception.
Sitting in the aisle not far from the forensic room, Musen took out his cigarette. In Mo Ziqian's words, he seems to be a "nicotine dependent" patient now. Especially after he recovered from his amnesia this time, his dependence on cigarettes seemed to be getting stronger and stronger.
Musen is not a god. Under strong pressure, he also needs a way to release the anxiety and fatigue in his heart.
Looking at the smoke at his fingertips, Musen began to use his logic to analyze the criminal psychology of the murderer of this shooting.
At present, the deceased have no common points and no connection. In order to prevent similar situations in sexual/asphyxiation cases, Musen also specially checked the original addresses, current addresses, work locations, etc. of the two deceased people in order to find out if they had any accidental intersections.
But the fact is that although they all live in the same city, they are far apart. One is in the city and the other is in a relatively development zone, the chances they can encounter are too slim. Moreover, their past careers also have no intersection. This made Musen begin to suspect that the murderer of this shooting did not have any special revenge. He is really likely to have killed people simply for the sake of killing.
When a serial murder case occurred, in the preliminary reasoning process, Musen attaches great importance to the relationship between the deceased. Because the intersection between the deceased can help them quickly identify the scope of the suspect's search, even the motive for murder. There is an old Chinese saying: Know yourself and your enemy, and you will never be defeated in a hundred battles. When the murderer's motive for murder is figured out, it is almost time for him to be arrested.
The situation of the deceased, the crime scene, and the type of guns seem to have not played a big role at present. Although Musen and Mo Zichang have been saying that a gun case is a big deal, it is not so easy to find if they really shoot two shots in a big city. Especially the special guns used by criminals, it is difficult to find the suspect through gunfire channels.
Thinking of these messy questions, Musen slowly closed his eyes and breathed deeply.
When Musen raised his wrist to look at his watch for the 21st time, the door of the forensic anatomy room finally opened. Mo Ziqian had already changed his clothes and walked out. He had said long ago that this handsome man, who was "naturally beautiful", was a little bit obsessed with cleanliness. No matter how nervous the moment he was, he could not stop him from disinfecting and cleaning after touching the body himself. He once explained that this was respect for the living and respect for the dead.
After seeing Mo Ziqian, Musen quickly stood up and said, "I hope you can give me some surprise..."
After hearing this, Mo Ziqiong couldn't help laughing and said, "I want another surprise? It seems that during the time you have been thinking about it, you haven't analyzed anything that is too valuable. Can't you give it a profile?"
Musen shook his head calmly and said, "I can't give it. There are few clues and there is no correlation. The only profile I can give now is that the criminal is a perverted murderer with a broad and remote environment for committing crimes..."
After hearing Mu Sen say it, Mo Ziqian couldn't help laughing again. Such a "profile" is really hard to say. So Mo Ziqian waved to Mu Sen and said, "Bring a mask and gloves, come in and I'll tell you." As he said that, he walked into the forensic room again.
Mu Sen followed Mo Ziqian in, and then found that the Forensic Chen and the two interns standing in the corner had completely become "fans" after a short period of time. I wonder what Mo Ziqian did during this autopsy process that made them look so impressed.
However, Musen had long been accustomed to the fact that some people admired Mo Ziqian, so he didn't care about the change in attitudes of those people and walked directly to the corpse.
After a glance, I found that Mo Ziqian did not have a real "dramatic" dissection, but only dissected all the gun wounds of the corpse.
Perhaps because he had just finished cleaning, Mo Ziqian stood far away. He pointed to the corpse and said, "The initial injury that the human body was shot was the impact of a high-speed rotating warhead. The degree of human body damage depends entirely on the size of the bullet and the transmission speed. When the bullet penetrates the skin, the skin will develop conical tension and deformation. The radial force of the high-speed rotating warhead exceeds the limit of the skin's elasticity, so it passes through the skin and enters deep soft tissue. The forward impulse forces move along the ballistic direction.
The tissue is torn, broken, and penetrated, forming the primary bullet wound tube, which is the so-called permanent burning path. Each gun wound on the two deceased is a permanent burning path. That is to say, the murderer shot the deceased from different distances. He did not miss one shot, nor did he not master the distance of one shot well, nor did he hit other objects and caused a counter-bounce gun wound to the deceased. The deceased's instantaneous cavity effect was obvious, and the clothing fibers and skin tissue hit by the gun were sucked into the cavity."
Although Musen knew a little about forensics, he was a little unsure when he heard Mo Zichang telling some professional knowledge. So he said with some confusion: "If you explain it clearly, can the clothing fiber become a clue?"
Mo Ziqian smiled confidently and replied, "This time, it's really possible. Because the shot from the deceased's lungs seemed to be a rope tied to him. So the cavity instantly sucked the fibers of the rope into the cavity. You can check if there is anything special about this rope. Secondly, it can be concluded that after the murderer caught the victim, he would keep them for a period of time in the form of kidnapping."
Musen pondered for a moment and said, "So... if he still has the victim in his hands..."
"It should be still alive." Mo Ziqian simply continued.
Musen felt that time seemed to be getting more and more tight. Although l did not give any time limit this time, the murderer's speed of killing was as if he gave Musen a more urgent time limit. If he could not give a profile as soon as possible and catch the murderer, another person would be killed soon.
Mo Ziqian walked out at this time and asked Musen: "Have you found any connection between the deceased?"
"No."
"Then now."
"What?" Musen suddenly became energetic when he heard this.
Mo Ziqian walked out of the forensic room and said, "The forensic doctor here ignored the residues in the stomach of the deceased. According to their stomach anatomy and blood analysis, the two deceased contained a certain degree of alcohol. That is to say... they have all drunk alcohol."
"Wine?" Musen's sharp gaze suddenly appeared. He seemed to have thought of something. It seemed that he could immediately know how the murderer caught the victim.
Seeing Mu Sen suddenly stopped, Mo Ziqiong turned around and asked, "What, are you ready?"
Mu Sen curled the corner of his mouth and replied, "Yes, I'm ready, I can give a profile. Let's go find He Tong."
Mo Ziqian was really happy when he saw Mu Sen's state. All he could do was limited to this. He tried his best to find clues from the corpse to help Mu Sen. The rest of the reasoning process depends on Mu Sen himself.
As soon as he heard that Musen had already made profiles and reasoning, the young team leader He immediately began to convene members of the task force. This was because he was eager to solve the case himself, and he couldn't believe it. Musen and Mo Ziqian just went to the forensic room for a walk, and when they came back, they could give the criminal's profile?
In the conference room, the members of the task force were all focused and prepared to listen to these two "myths" to analyze the profile of the criminals.
Musen sat in the main position and turned on the projector to start playing photos of the corpse guns and bullets.
He said straight to the topic without saying anything: "Just just passed the inspection of the corpse, I found that the instantaneous cavity effect of the body sucked in some kind of rope fiber. Now that the fiber has been sent for inspection, we will soon know if there is anything special about the rope. If it is special enough, we can even find the suspect through the channels for purchasing ropes."
Captain He quietly winked at the police officer next to him. The police officer immediately asked Musen knowingly: "Mah, please ask, what effect do you just said mean?"
It seems that He Tong doesn't want to ask questions in public, so that he can hide his embarrassment of not knowing instantaneous aura. However, in Musen's opinion, all this is completely unnecessary. Because he only cares about solving cases now, he doesn't care whether the captain understands instantaneous aura.
So Mu Sen glanced at Mo Ziqian, meaning that he would explain a little so that the leader of the task force could feel at ease.
"The so-called instantaneous cavity effect refers to the shock wave formed by a high-speed rotating bullet entering the human tissue, and at the same time compresses the tissue around the ballistic with a large pressure, causing the tissue to expand and expand to the surrounding area and quickly shift, thus forming an instantaneous cavity dozens of times larger than the warhead. The pressure in the cavity can reach a maximum of 200 atmospheres and lasts for 02~2 milliseconds. Then the cavity begins to contract, after repeated expansion and contract seven or eight times,
The pressure inside the cavity is equal to the ambient pressure, and finally a permanent invasion can be left. Due to the repeated expansion and contraction of the cavity, it is very likely that the substance outside the wound will be sucked into the depths of the cavity. For example, the rope fibers I just took out, or clothing fibers and skin tissue. Usually this situation will cause large areas of tissue damage, but due to the large amount of gas and low density in the lungs, the instantaneous cavity will be smaller, and the inhalation evidence we get will be relatively less."
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Chapter completed!