Department of Psychology Forensic

Chapter 55 Physical Evidence...found!

"The murderer is very angry!"

Zhou Zheng said without hesitation that this feeling was not the answer he thought about when asked by Cui Jun, but he clearly felt it during the identification of the corpse form.

"Judging from the overall injuries on Sister Yanyan's body, she should have been imprisoned for a period of time before she was alive. Her hands and feet were tied up, and there were signs of being tied up on her body. She was also arrested many times in a short period of time. Violation, coupled with countless traces of violence on the body, is enough to show that the murderer continued to commit violence in a short period of time!"

Zhou Zheng's brain was running quickly, his eyes were sharp and thoughtful, as if he had seen what happened to Li Yanyan before his eyes, and restored what happened at the scene in his mind through the scars on various parts of the corpse.

"During this process, the murderer's initial mood was revenge!"

"Why did he take revenge?"

"revenge?"

"No, no, there is no hatred between them, it's more like catharsis!"

"None of the injuries on the corpse were fatal. It can be seen that the murderer just wanted to gain pleasure through such violent torture, and had no intention of killing Sister Yanyan."

"Dismemberment and reassembly is for humiliation!"

"But... Judging from the emotions conveyed by the murderer, he didn't humiliate him to the extreme. He was more provocative, provocative to the police, but not completely provocative. This is a complicated emotion."

"It seems...well...the murderer wants the police to understand it as a provocation!"

"That's right, that's what it means!"

"The murderer deliberately placed a ladder on the stairs to guide us to find the corpse, just to make us feel that he was provoking, but in fact, he was using this seemingly provocative behavior to cover up his real purpose!"

"What is the real purpose?"

Zhou Zheng muttered one sentence after another. At the beginning, he was still answering Cui Jun's question, but as he talked, he was immersed in this kind of thinking. He put himself into the perspective of the murderer, using the murderer's previous actions Based on what happened in the past, the behavior of the murderer is simulated, so as to infer the murderer's psychology.

Cui Jun was conscious of Zhou Zheng's state, and did not interrupt, but listened carefully. He wanted to participate in this case and catch the murderer, so, for him, Zhou Zheng's thinking was very important.

"I see!"

Suddenly, Zhou Zheng's eyes widened, and the light in his eyes flickered.

Now at this time, he is completely in a state of concentrated thinking, completely shielding everything from the outside world, thinking about things related to the case, and focusing all his attention.

"Pretend, it's a camouflage!"

"The purpose of the murderer is to disguise!"

"The pre-life injuries on Sister Yanyan's body were left behind by the murderer's instinct to achieve his goal, while those after-death injuries are completely misleading!"

"The injury after death is to cover up some things, otherwise, the murderer didn't have to do this at all!"

"The deliberate dismemberment and stitching is to attract the attention of the police, so that we preconceived that all the posthumous injuries on Sister Yanyan's body were just for provocation."

"But it's not..."

"The murderer stabbed sister Yanyan's lower body continuously with a dagger, which shows that the murderer wanted to destroy the evidence, so when we check, we should deliberately pay attention to whether there are bodily fluids and other residues near the reproductive tract!"

"The murderer deliberately cut off Sister Yanyan's breast tissue, which is also a deliberate guide, because from the perspective of criminal psychology, the murderer has already achieved the purpose of infringing, the emotions in his heart have been released, and there is no additional hatred , usually don't continue to humiliate the corpse, if I'm not wrong, there may be tooth marks on it!"

"It is preliminarily judged that the cause of Sister Yanyan's death was drowning. This is a special kind of mechanical suffocation. Judging from the skin and corpse spots on the body surface, it is not drowning in water!"

"The skin of corpses drowned in water will be stabbed by cold water, and the pores will shrink, the hair follicles will bulge, and the hair roots will stand upright in the shape of chicken skin, and the skin on the hands and feet will appear white, swollen, and wrinkled. There were no such signs on the body."

"Moreover, the skin blood vessels are stimulated by cold water and will shrink, making the plaque less obvious."

"Sister Yanyan's body surface has clear spots on the body, although it is a bit faint, but it is caused by blood loss from dismemberment and hanging upside down."

"Sister Yanyan has mushroom-shaped foam in her mouth and nose, and it is very likely that she was drowned in a water container such as a basin or bathtub. Combined with the fact that the body was amputated in the middle, it was the stomach. I suspect the murderer The purpose of doing this is to find something!"

"The murderer uses this method of choking water, hoping that sister Yanyan can spit it out by herself, or after pouring a lot of water, the stomach will be flushed with water, then..."

"Sister Yanyan has most likely swallowed the decisive evidence that can identify the murderer!"

"The murderer's sudden use of such an extreme method of dumping the body is destroying the evidence on Sister Yanyan. This is where I see anger from the murderer."

"Master, I'm done!"

Zhou Zheng's thoughts were almost without interruption, his mouth was outputting rapidly like a machine gun, and half of his analysis was recorded into the video.

"Your analysis is excellent!"

Cui Jun nodded heavily, and there was some faint change in his eyes looking at Zhou Zheng. Even he himself did not think of these things. After Zhou Zheng's analysis, many doubts suddenly became clear, and he gradually understood Li Yanyan clearly. What kind of treatment did you encounter during your lifetime?

"but……"

Cui Jun suddenly drew his voice very long, stared at Zhou Zheng solemnly, and asked, "Why do you say that Yanyan was hung upside down and drowned?"

At this moment, Cui Jun has recovered from the state of anger just now. After all, he is a professional forensic doctor, and he has long seen corpses. He just had a special emotion when he was performing an autopsy on a familiar person.

After those emotions were relieved, everything returned to normal.

At present, this question is really being tested.

"Judging from the traces of the corpse, only the head entered the water, and the rest of the body was out of the water. Generally speaking, there are two possibilities for this kind of drowning!"

Zhou Zheng's eyes exuded confidence, and he said slowly.

"The first one is to press the deceased's head into the water, so that we can check the traces of pressing on the back of the neck. When we examined the autopsy, we did not find contusions on the back of the neck. Considering the instinctive struggle of the deceased after entering the water , which is obviously impossible."

"The second is to hang upside down into the water by grabbing the feet. Considering the strangle marks on the body and the large bruises on the ankles, this is the most likely situation, and it is likely to be done while being tied up. of!"

"Of course, these are just my inferences based on the traces on the corpse surface. Accurate results can only be obtained after the autopsy!"

After Zhou Zheng explained, he again focused on the part where Li Yanyan's body was cut off.

"Sister Yanyan must have been thinking about how to leave evidence for us when she was restrained. She is a forensic assistant. We know that after her body is found, we will definitely dissect her stomach, so it must be that she ate something. A physical evidence that can prove the identity of the murderer, and more than once!"

"I speculate that the time when she ate the physical evidence should be when the murderer went out to throw the body, that is, the time when the murderer went to Jianghai Normal University in the morning."

"Originally, she should not have been discovered, but she might have been worried about the lack of evidence, and she ate physical evidence again. The time was just when the murderer was about to set fire, but at that time, she was discovered."

"The murderer's behavior of hanging sister Yanyan upside down to choke the water should be to make her spit out physical evidence, but it didn't work. Such behavior angered the murderer and led to a fatal disaster."

"So……"

"If my deduction is correct..."

"After the murderer opened Sister Yanyan's stomach, he should have taken out the physical evidence of the second eating, but the physical evidence of the first eating, according to the time, should still be in the small or large intestine!"

"When we dissect the small and large intestines, there is a very high possibility that we will find the physical evidence left by Sister Yanyan!"

Zhou Zheng carefully speculated that all the premise of what he said was based on the fact that Li Yanyan would deliberately leave the evidence. If it was another deceased person, he would not think about it this way, but Li Yanyan made a long-term Forensic medical assistants who have been working for a year, even if they seldom go to dissections in person, they have seen many dissections, so they naturally understand the process of forensic dissections.

After Zhou Zheng said these words, Cui Jun clenched his fists fiercely, and the joints of the joints became intensely white due to excessive force.

"Let's start dissecting!"

Cui Jun took a deep breath, his emotions have been adjusted, and he is in a calm state. This time is more suitable for dissection, but if he listens to Zhou Zheng for a while, he is afraid that he will fall into the previous anger again. Waste of time.

Immediately, he picked up the scalpel for dissection, nodded to Zhou Zheng, and signaled to Zhou Zheng that he was going to take a video and take pictures.

Zhou Zheng understood it immediately, and immediately raised his camera. After he said these words just now, he had a new understanding of the case. Of course, he had finished what he wanted to say.

Cui Jun used a scalpel to open the skin of the thorax and abdomen of the corpse with extremely skillful techniques, quickly cut the skin, separated the muscles, cut off the ribs, separated the sternoclavicular joint, and pinched off the first rib...

The whole process flowed smoothly without any sense of sluggishness, and it was done in one go. It seemed that he wanted the apprentice to feel the master's professional ability for the last time. Cui Jun completed the removal of the sternum and opened the peritoneum in a very short time. Yanyan's thoracic and abdominal organs were exposed in the eyes of the two of them.

Cui Jun cut the trachea accurately with a scalpel, stared at the scene inside, and said clearly: "The dead man's trachea and bronchi were filled with the same bloody mushroom-shaped foam as the nose and mouth, and no sediment or aquatic plants were seen, which is a sign of drowning." .”

Then he looked towards his lungs, and pinched his lungs in turn with his hands.

"The surface of the lungs of the deceased was moist, with a strong sense of luster, and the color was light gray, mixed with light red bleeding plaques, which were enlarged and filled the entire chest cavity. The front edge covered the heart. The feeling of kneading the dough, forming a depression after finger pressure."

After Cui Jun quickly finished talking about the appearance of the lungs, he picked up a scalpel and gently cut the lungs open. Suddenly, a large amount of blood-colored foam flowed out. He nodded and said, "Water emphysema is basically a drowning !"

Immediately afterwards, Cui Jun gently moved his lungs, exposing his heart, and examined it carefully.

"The blood vessels in the cardiovascular meridian are stagnant, and the right heart is stagnant. It is dark red blood that does not coagulate, and the signs of drowning are obvious." Cui Jun quickly extracted the blood in the heart and the fluid in the lungs, and prepared to send them to the laboratory for testing. During this process, he seemed to suddenly think of something, looked up at Zhou Zheng, and asked, "Do you think Yanyan drowned in fresh water or in sea water?"

"Fresh water is the tap water at home, and its composition can be tested for comparison." Zhou Zheng said with certainty.

"Guess?" Cui Jun tilted his head and asked again: "Do you know how to check?"

"I know." Zhou Zheng nodded, and said: "In freshwater drowned corpses, the blood components in the left heart cavity are thinner than those in the right heart, and the blood viscosity, specific gravity, hemoglobin, and red blood cell count are all lower than those in the right heart. Heart blood tests can be done. The comparison confirms that seawater drowning is the exact opposite."

"good."

Cui Jun praised, he was asking Zhou Zheng, but his hands did not stop at all. During this process, he took a small piece of lung tissue, myocardial tissue and liver tissue for sampling.

"The stomach of the corpse was directly cut in half. The inside was clean and there was no chyme, nothing. It was very similar to what you inferred."

After all, Cui Jun raised his head again, staring at Zhou Zheng solemnly, looking extremely serious.

"Zhou Zheng, since you speculate that there is physical evidence in Yanyan's small intestine or large intestine, then we will conduct a careful dissection and inspection. We must not let go of any suspicious things. We must not let down the trust that Yanyan gained with her death. !"

"I will definitely record the whole process clearly!" Zhou Zheng gestured to the camera in his hand.

"Then let's start!"

Cui Jun didn't say anything anymore, his eyes suddenly became extremely determined, he picked up the scalpel, and quickly cut towards the small intestine.

Because he was worried about any physical evidence in it, he was very gentle when cutting, trying to cut through the skin as much as possible, for fear that a little too much force would destroy the physical evidence that might exist in it.

Zhou Zheng was holding the camera, controlling his hands not to shake. His eyes were equally serious. Almost every time he cut and searched, he felt that he was one step closer to the evidence.

The small intestine was cut inch by inch. Cui Jun and Zhou Zheng controlled their movements without shaking under different behaviors, and their nervousness was raised to the extreme.

Gradually, minutes passed by.

Just when both of them felt that there might be no gain in the small intestine, and they were about to dissect the large intestine, suddenly something that should not appear in the small intestine attracted Cui Jun's attention.

"The physical evidence...found!"

　Gagen is here, brothers, ask for a monthly pass, ask for a monthly pass~!

　　
　
(End of this chapter)