Department of Psychology Forensic

Chapter 108
Jianghai City Bureau, Forensic Medicine Center.

Cui Jun and Zhou Zheng went straight to the autopsy room. They put the body bag in their hands on the mobile corpse bed.

"Now start the dissection."

Cui Jun glanced at Zhou Zheng, motioning for the latter to pick up the camera to record.

"For the inspection of ossified corpses, the first step we need to do is to determine the species."

Cui Jun's voice sounded slowly. While taking out the bones in the body bag one by one, he explained the main points of the appraisal in a serious tone, sounding like a teacher in class.

However, this is not a practical class, but a real murder case.

Zhou was listening silently. He understood that what Cui Jun said was not necessary for the autopsy, but more like telling him his experience.

I don't know if it was his own illusion, but after Li Yanyan's accident, he felt that Master became much gentler, and he looked like a kind elder, not the unkind and cold feeling before.

He could clearly feel that the purpose of what Master said was to help him increase his experience in autopsy so that he could become a forensic doctor in charge in the future.

"Scenes of ossified corpses are not common, but once found, it will be very troublesome. When we inspect, we must not panic, and we must conduct inspections step by step in an orderly manner. For the bones and bone fragments found at the scene, we must It is necessary to judge whether it belongs to human bones." Cui Jun paused slightly when he said this, looked sideways at Zhou Zheng, and said half-jokingly: "If the bones found at the scene do not belong to humans, then the inspection is meaningless .”

"Understood." Zhou Zheng nodded, his eyes were solemn, and he held the camera in his hand steadily.

"When I was in the zoo, I did a preliminary inspection, and I was basically sure that these were human bones. However, we still need to extract them for inspection, but this does not prevent us from mastering the skills of identifying human bones with the naked eye." Cui Jun said here , looked at Zhou Zheng again, and asked, "Can you tell?"

"This..." The corner of Zhou Zheng's mouth twitched slightly, and then he shook his head. This kind of discrimination is definitely not as simple as the concept of words in books. It needs experience to judge. For him, it is like memorizing all the recipes in his head. , but to what degree the dish will be cooked, how much salt needs to be added, and more experience is often needed to support the keen sense. He shook his head and said, "I'm not particularly clear."

"Actually, the bones of mammals have something in common. The bones of some large mammals, such as bears, deer, pigs, and large dogs, are very similar to human bones when they become ossified and incomplete. The phenomenon of identifying human bones happens from time to time.” Cui Jun patiently explained: “Whether human bones are misidentified as animal bones, or animal bones are taken as human bones, this will cause trouble to the case, although it still needs to be sent However, it is very necessary for the forensic doctor to make judgments based on experience at the scene, after all, it is impossible to see the bones and send them to the laboratory for examination."

"That makes sense." Zhou Zheng nodded silently. These are all Master's experience. It's like this for many things. If you haven't done it, you will never know what kind of feeling it is. No matter how much theoretical knowledge is supported, you will never have practical experience.

In fact, he is very lucky. He has the ability of photographic memory and can completely memorize forensic books in his mind.

This ability can greatly help him conduct forensic examinations. There is too much knowledge that needs to be memorized. For every forensic practitioner, these contents are things that are constantly memorized when they are students.

Even so, it is still difficult to fully remember. After entering the workplace, I need to continue to learn from the old forensic doctor to consolidate the memory points.

You can't flip through the book during the autopsy!

Zhou Zheng still has an advantage in this regard. At least he doesn't need to read the book, but needs more time in the transformation of theory and practice.

"During the on-site inspection, the structure of the bones will be preliminarily identified." Cui Jun's voice sounded again, telling Zhou Zheng his experience without reservation: "Although the bone anatomy of humans and other mammals is relatively similar, due to the Humans walk upright, which is obviously different from those four-legged animals. For example, human long bones are usually relatively straight, while animals have a significant curvature."

"Yeah." Zhou Zheng nodded, keeping Master's words in his heart.

"For example, these two fibulae, except for the gnawing marks at both ends, are in the shape of a triangular prism as a whole. The sides are straight and there is no obvious curvature. It is basically certain that they are human bones." Cui Jun pointed to the bones on the corpse bed.

"Indeed." Zhou Zheng's eyes fell on the fibula. He could tell that it must be a human bone at the first glance, but he relied on instinct and intuition without any theoretical basis. I saw a geometry problem in math class. The topic was to find the length of the side. I estimated an answer based on the length of the lines on the picture, but this is not possible, and I need to calculate it accurately through numbers.

"When ossification is identified on the spot, there is another place that deserves more attention, that is, the bones of some small animals are often misjudged with the bones of children. In this case, the maturity of the bones can be used to identify " Cui Jun found a radius bone that had not been eaten to the end from the bones of the corpse bed, and there was still dark yellow tissue standing on it, and said: "Whether it is an adult or an adult mammal, the epiphysis at the end of a long bone Fusion is very smooth. However, because the metaphysis and epiphysis at the end of juvenile human long bones are not fused, the end of the long bone often presents a non-smooth rough surface. Through this difference, when encountering small long bones, you can Preliminary judgment is whether it is a human child or a mature small animal."

"Understood!" Zhou Zheng nodded his head heavily. Master's explanation was not unreasonable, and he explained the differences very clearly. A few simple words added a lot of experience to his on-the-spot judgments.

"Zhou Zheng, now you send these test materials to the laboratory and let them conduct DNA testing as quickly as possible. We need to determine how many people these bones belong to, and at the same time, we need to determine which bones belong to the same person." Cui Jun told Zhou Zheng In the process of telling the story, the bone powder test materials have been obtained from these white bones, and each test material has a clear label, which corresponds clearly.

"Okay." Zhou Zheng took the specimens that had been put into the grid, turned his head and left the dissection room. He was also very curious about how many murders these bones would be involved in.

……

Zhou Zheng quickly returned to the dissecting room after sending the bone meal materials to the laboratory.

During this process, he changed into a dissecting suit.

When he returned to the dissection room, Cui Jun was inspecting the bones. The camera was placed on the bracket next to him, clearly recording what happened here.

"Master, we actually have a bracket, and I just released my hands!" Zhou Zheng saw the very professional bracket, and set the camera above the corpse bed, clearly recording every move during the autopsy.

"It's not the fault of your vacation!" Cui Jun glanced at Zhou Zheng and said angrily: "I am the only one in the forensic center, and I have caught up with the examination of several corpses. No one had a camera, so I had to temporarily go to a nearby shopping mall to buy a camera stand."

"Such a large bracket is not cheap!" Zhou Zheng sighed, it seems that Master spent a lot of money this time.

"Of course it's not cheap!" Cui Jun felt a pain in his chest when he thought of this, and gave Zhou Zheng another white look.

"Master, I seem to have asked for leave for a day and a half, and I was still asked for leave. You can't blame me for this. If you blame it, you can't trust other interns. Otherwise, if you recruit a few more people, there is no such trouble." Zhou Zheng and Cui Jun The relationship between the two is becoming more and more familiar, and it is much easier to speak.

"If every intern can have your skills, then I would really like to recruit a few more." Cui Jun shook his head and said, "Forensic medicine is not a Chinese cabbage in the vegetable field. Even an appraisal result may be evidence pointing to the murderer, there is no room for carelessness, I really can't trust those interns, unless I recruit some experts."

"How could a mature forensic doctor who is already capable of being an assistant come to be an assistant!" Zhou Zheng smiled helplessly. Isn't that overkill? , If you don't get the opportunity to exercise, I'm afraid you won't make much progress after ten years of work, and you still don't have the ability to be the chief surgeon.

"Stop talking nonsense, come and take a look." Cui Jun beckoned to Zhou Zheng. With this camera bracket, Zhou Zheng didn't need to hold a camera to record. Although it would not be so convenient in terms of video comprehensiveness and taking pictures, but When dealing with such flexible corpses, it is harmless.

Immediately, Zhou Zheng approached, and his mood suddenly became agitated. This was the first time he went to the autopsy with Master at close range, without looking through the screen of the camera.

"Look here."

Cui Jun pointed to the broken end of the radius that he had seen just now, frowned tightly, and said: "There is a problem with this radius. There is dark yellow tissue on this side, while the other side is relatively smooth, and there is no food on the whole." It looks like... the bones left over from chicken wings eaten by humans."

"That's true." Zhou Zheng carefully looked at the radius that Cui Jun was pointing at, and it was a completely different feeling to be able to participate in the dissection with Master at close range. His brain thinking completely followed Master's thinking, and said: " The meat here is not eaten by Siberian tigers!"

"That's right, I think so too. From the gnawing marks on the other bones, it can be seen that Siberian tigers don't leave the bones after eating the meat at the joints of the bones like humans do, but just take a bite. It was violently chewed, and even the bones were eaten, so I speculate that there is no meat at the joint of this radius bone, and it was thrown into the lion and tiger garden in this way." Cui Jun said seriously.

"So it's throwing the corpse into the garden." Zhou Zheng followed up with analysis: "I think judging from this radius, it is enough to support the inference of dismembering the corpse and throwing the corpse. Then the nature of the case can be defined as homicide, which is a criminal case."

"That's right, the zoo is just a place to dump corpses, not the scene of the crime. The murderer threw the dismembered corpses into the zoo. He must have thought that these corpses would be eaten by Siberian tigers, so it would be tantamount to being a ghost." Unknowingly destroyed the corpse, but he missed the Siberian tiger's food intake, so we found these bones and the signs of the case of many people." Cui Jun listed these bones and said: "Zhou Zheng, look, except for a head, the existing bones are all long bones, and there is no repetition. I don't know whether the murderer planned it carefully or did it accidentally."

"I think the murderer should have paid attention, but he didn't pay that much attention." Zhou Zheng's thoughts dispersed, and he said: "The place where the murderer dismembered the body should be his private space. The most likely place is his home. If it is In the case of a multi-person bone case, the murderer should have dismembered more than one corpse, and those corpses must not be piled up all over the floor, but may be put into a basin, so when the murderer decides to throw the corpses, he himself does not know which corpses The pieces belonged to the same body."

"This is a reasonable explanation." Cui Jun nodded and said, "Now we need the DNA test report to provide a basis for our theory."

"Master, I think the murderer may not have taken out a whole body of body parts. He must have picked some difficult places to deal with, such as the long bones we found. He deliberately controlled the number. In this way, it was discovered that there was a murder case in the zoo, which also made us suspect that it was only one person who was killed." Zhou Zheng still analyzed.

"What you said makes sense." Cui Jun put away all the bones at the scene and said, "Now that the test is here, there is no more information. We can only wait for the DNA results to come out before conducting a second test."

……

It was getting late, and it was almost time to get off work. Zhou was sorting out the photos of these bones in front of his work station. It was impossible to make more judgments based on these unidentified bones, let alone criminal psychology. A portrait of the suspect.

There is not enough evidence, and there are too few things that can be analyzed to support any inferences. Of course, inferences cannot be made.

"Da da da--"

At this moment, high heels sounded outside the forensic center, and a pretty figure in a white coat opened the door and walked in.

It was Jiang Luoluo, an intern in the laboratory.

"The DNA test results are out!"

Jiang Luoluo held the report card in her hand, and after sweeping her eyes over Cui Jun, she walked towards Zhou Zheng's direction. She felt that it was the inspection materials sent by Zhou Zheng, so it would be more appropriate to show Zhou Zheng first.

(End of this chapter)