Jiang Yuan did not dissect the body in the normal order, but first carefully picked up trace evidence from the wound on the chest.
When the murderer killed, he used a lot of strength and moved the dagger very fast. He penetrated the victim's heart and slid in until the guard of the dagger hit the victim's chest.
At the same time, the front edge of the dagger also touched the victim's ribs. Judging from the cut open, there were indeed marks.
In this way, there is likely to be trace physical evidence of the murder weapon in the victim's wound. As for whether this physical evidence will help solve the case, it is not certain, but it will probably be helpful in court evidence.
In fact, it is not that easy to nail a murderer. When the evidence is not sufficient, the court will often reduce the sentence. Especially when it comes to the death penalty, the requirements for evidence and evidence chain are more than one level higher.
of.
Therefore, sometimes the court would rather grant a reprieve than directly impose the death penalty. Because if it is granted, it may be rejected during the death penalty review. At that time, you will still be the one who is embarrassed.
Criminal investigators like Jiang Yuan are particularly popular in various places, also because he is a forensic scientist who speaks with physical evidence. Solving a case is not only a case solved, but also comes with a full set of evidence, and the evidence chain is relatively complete. It is not like
Liu Jinghui's kind of logic sounds rigorous, but when it comes to court, it's all talk.
Wu Jun watched Jiang Yuan remove the skin lesion on his chest and handed him the rib clamps.
The rib forceps used in forensic medicine are the same thing as the rib forceps used in cardiothoracic surgery. They essentially use the principle of labor-saving levers to open bones. The difference is that the rib forceps used in cardiothoracic surgery are often small and exquisite, and are expensive.
The rib clamps used by forensic doctors are not so sophisticated. They are often large, rough, and look heavy and powerful.
Jiang Yuan clamped open the bones, took pictures, carefully resampled them, and then directly cut out a section of ribs that left traces.
There are many similarities between human ribs and pork ribs. If the corpse is a freshly burned corpse, it is said to have a smell similar to that of roasted pig.
The ribs that had just been cut looked a bit like pork chops. Wu Jun specially wrote a label with a pen and marked it.
In addition, the heart is also the focus of sampling.
Finally, a whole bucket of internal organs, including the heart, liver, lungs, spleen, kidneys and brain, as well as the pancreas, thyroid and adrenal glands, were soaked in formalin. Then each part was sampled, cut into small strips, and put into a dehydrator for dehydration.
After the dehydration was completed, Wu Jun had heated the paraffin.
Put the melted paraffin into a small grid, and then put the dehydrated test materials, that is, the organs cut into strips, into the wax. When the wax solidifies, you will get an amber-like wax block.
Then, the wax block is put on the slicer, cut into thin slices, and finally put into the spreader.
In the spreading machine, the slice will open due to the tension of the water, and the wax surrounding it will melt, leaving only a thin piece of tissue.
This process is quite technical, and it also tests the forensic skills.
Especially when the test materials are limited, if the forensic medicine fails several times, the test materials may be used up, and nothing can be obtained in the end.
These slices are not only used for archiving, but also as evidence. They are also needed for final review and examination. Especially for death penalty reviews, these key evidences must be examined.
In other words, if you want the criminal to be sentenced to death, the examination materials must be handled well.
Jiang Yuan was extremely serious in what he did.
Wu Jun stayed with him until the autopsy was completed. After pushing the body into the ice coffin, he said, "Don't forget, you promised Bureau Huang that you could solve the case."
"I remember." Jiang Yuan nodded.
"Can it be broken?" Wu Jun was full of doubts.
"It should be possible to break it."
"How to break it?"
"We don't know yet." Jiang Yuan replied, feeling that he was being a bit nonsensical. He quickly said, "I still have the confidence, but it's not clear how I can solve the case." Wu Jun sighed, "So don't say anything."
That's it. Don't agree so quickly at that time. Isn't it easier now? It's time for Huang Bureau to express his opinions.
You still have to express it."
Jiang Yuan just said "En En". With his current skill set, he is too cautious and doesn't feel justified.
Although there are no clues directly pointing to the murderer in the case at hand based on the autopsy, from Jiang Yuan's perspective, there are still many options available.
Wu Jun just reminded Jiang Yuan a few words. Seeing that he didn't look worried, he felt relieved and lit a brazier in the room.
Jiang Yuan danced three times obediently without him having to say anything.
The two of them took the car back to the Criminal Police Brigade.
In the conference room, intelligence was constantly being sent in, and several squadron leaders were also discussing in low voices. It was still in the early stages of investigation, and the direction of the investigation had not yet been determined. Therefore, the main work was done by the people of the Criminal Division Squadron, and so on.
It means collecting evidence from the scene and analyzing the evidence from the scene.
When Jiang Yuan entered, he was not polite. He first asked someone from the imaging office to check the surveillance.
"The murderer probably didn't take an unusual route. We have surveillance in the main directions, but no one has been photographed. At least for now, the suspect has not been identified." Zhuang Wei, the first generation eye in the imaging office, now has a lot of trust in Jiang Yuan
It was extremely high, and he even became a little nervous.
Ningtai County has spent so much money to upgrade surveillance equipment. If it doesn't work, it will not only be funny, but everyone in the imaging office will suffer.
Jiang Yuan had more confidence than Zhuang Wei. While looking at the surveillance camera, he asked, "Didn't you find any trace of the suspect?"
"We are not sure about the suspect's physical characteristics yet." Zhuang Wei is also a little helpless. Now he doesn't even bring photos with him when looking for someone, so he doesn't know which person he is looking for.
"Where did the police dog chase?" Jiang Yuan asked the police officer next to him.
He dispatched the police dogs not to get direct answers.
However, judging from the blood splattered at the scene, the murderer must have left with some of the blood. Through the sniffing of the police dogs, it is almost possible to determine the direction in which the murderer left.
The police officer next to him pointed east.
Zhuang Wei also explained, "We have also extended the investigation scope to the east, but there are no obviously suspicious people."
"If the surveillance can't find clues, we have to change our thinking.
"Liu Jinghui stepped forward and tried to help reorganize the case.
Jiang Yuan did not follow Liu Jinghui's baton and said first, "It's suspicious to see a person on the street at three o'clock in the morning."
Liu Jinghui was stunned: "We can't check all the newcomers. Well, the murderer is most likely an outsider. From this point of view, the outsider who is still lingering on the street at three in the morning is very likely to be the murderer?"
"You can go through this idea first." Jiang Yuan still maintained a relatively relaxed attitude. Using surveillance to detect cases is only a relatively relaxed way, not the only way. Zhuang Wei shook his head again and said, "Since three in the morning
Starting at 30:30, there were not many people caught in the surveillance. We followed the transportation to look for people. So far, there is no one who looks like the murderer."
What he said was quite loose, but everyone present could understand it.
People who are still wandering outside in the early morning, even if they walk a certain distance, will still have to take transportation in the end. Based on the transportation, you can basically determine the identity of most people.
Of course, there will definitely be someone whose identity is difficult to determine, but the murderer will look like a murderer, will be nervous, will walk fast, and will look around. In short, some murderers can pretend to be normal people, but some people
At first glance, he doesn't look like a murderer.
After all, what the police were facing was not 007. From Zhuang Wei's point of view, although the person who was still wandering around outside at three or four in the morning was quite strange, he did not look like the murderer after all.
Jiang Yuan picked a few surveillance cameras from that time period and looked at them for a while, but found no clues.
At this time, everyone's expressions became a little solemn.
Could it be that there will really be something wrong with this current case?
Jiang Yuan's expression did not change at all. He just asked people to mark the positions of the cameras near the bar, looked at them carefully for a while, and then said, "Captain Zhuang, please continue to watch the video, especially analyze it at 3:30."
Surveillance near the bar until four o'clock. I'll go to the scene to take a look."
"Okay." Zhuang Wei agreed.
Mu Zhiyang, who was nearby, quickly got up and prepared to follow Jiang Yuan to the scene. At the same time, he asked, "Do you want to watch the scene again?"
"Well, the surveillance coverage on Bar Street is wide enough. If there are no traces of the murderer, we must consider that the murderer did not come in and out through normal means. Jiang Yuanshu curled his lips and said: "If this is the case, the murderer only
