novelnext Chapter 373 There is always one suitable for him
Chapter 373 There is always one suitable for him
Chapter 373 There is always one that suits him
Jiang Yuan did not dissect the body in the normal order, but first carefully took trace evidence from the chest wound.
When the murderer killed, he used a lot of strength, and the speed of the dagger was also very fast. It pierced into the victim's heart and slipped in until the guard of the dagger hit the victim's chest.
At the same time, the front edge of the dagger touched the victim's ribs, and judging from the dissection, there were indeed marks.
In this way, there is likely to be trace 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 is likely to be helpful as court evidence.
In fact, it is not so easy to crucify a murderer.When the evidence is insufficient, the court often reduces the sentence.Especially when it comes to the death penalty, the requirements for evidence and chain of evidence are more than one level higher.
Therefore, sometimes the court would rather grant a reprieve than the death penalty.Because it is given, it may also be rejected during the review of the death penalty, and it will still be me who is embarrassed at that time.
Criminal investigators like Jiang Yuan are especially popular everywhere because he is a forensic doctor who speaks with physical evidence.To solve a case is not only to solve the case, but also to attach a full set of evidence, and the chain of evidence is relatively complete.It's not like Liu Jinghui, who sounds logical, but in court, it's all lip service.
Wu Jun watched Jiang Yuan remove the skin lesions on his chest, and handed him the rib forceps.
The rib forceps used in forensic medicine are the same thing as the rib forceps used in cardiothoracic surgery. In essence, they use the principle of labor-saving levers to force open bones.The difference is that the rib forceps used in cardiothoracic surgery are often small and exquisite, and expensive, while the rib forceps used in forensic medicine are not so exquisite. They are often large and rough, and look bulky and powerful.
Jiang Yuan pliers opened the bone, took a picture, carefully sampled again, and then directly cut off a section of rib with traces left.
There are many similarities between human ribs and pork ribs. If it is a corpse that has just been cremated, it is said to have a smell similar to roasted pigs.
The ribs just cut out are a bit like pork ribs. Wu Jun specially wrote a label with a pen to indicate it.
In addition, the heart is also the focus of sampling.
Finally, a whole bucket of viscera, including the heart, liver, lung, spleen, kidney, brain, pancreas, thyroid, and adrenal glands, is soaked in formalin, and then all parts are sampled, cut into strips, and then put into a dehydrator for dehydration.
After the dehydration was completed, Wu Jun had already heated up the paraffin.
Put the melted paraffin into the small grid, then put the dehydrated test material, that is, the sliced viscera into the wax, and when the wax solidifies, you get a piece of wax like amber.
Then, the wax block is put on the slicer, cut into thin slices, and finally put into the slicer.
In the microtome, the slice is stretched by the tension of the water, melting the wax that envelops it, leaving only a thin sheet of tissue.
The technical content of this process is quite high, and it is also a test of forensic technology.
Especially in the case of limited test materials, if the forensic doctor fails several times, the test materials may be used up, and nothing will be obtained in the end.
And these slices are not only used for archiving and as evidence, but also for future review and inspection.Especially in the review of the death penalty, these key evidences must be checked.
In other words, if the criminal is to be sentenced to death, the materials must be handled well.
What Jiang Yuan did was extremely serious.
Wu Jun stayed with him until the autopsy was over, and after the corpses were pushed 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 broken."
"How to break?"
"I don't know yet." Jiang Yuan replied, feeling a little nonsensical, and quickly said: "I still have this confidence, but it's not clear what aspect can be used to solve the case."
Wu Jun sighed: "So don't be full of words. Don't agree so quickly at that time, it's easy now, when Bureau Huang should express, he still has to express."
Jiang Yuan just responded with "En En".As far as his current skill set is concerned, he is too cautious and feels unreasonable to himself.
Although the case in front of him didn't have any direct clues to the murderer from the autopsy, but in Jiang Yuan's view, there were still many options available.
Wu Jun just reminded Jiang Yuan a few words, and seeing that he didn't look worried, he felt relieved and lit a brazier in the room.
Jiang Yuan didn't need him to say, he danced three times obediently.
The two returned to the criminal police brigade by car.
In the conference room, information was constantly being sent in, and several squadron leaders were also discussing in low voices.
It is still in the early stage of the investigation, and the direction of the investigation has not yet been determined. Therefore, the main work is done by the criminal squadron, which is to collect and analyze the evidence at the scene.
When Jiang Yuan entered, he was not too polite. He first went to the video office to check the surveillance.
"The murderer probably didn't take the usual route. We have surveillance in the main directions, but no one was photographed. At least for now, the suspect has not been locked." Zhuang Wei, the first generation in the imaging office, now trusts Jiang Yuan It was extremely high, and he even got a little nervous.
Ningtai County spent so much money to upgrade the monitoring equipment, if it doesn't work, it will be more than a joke, and all the people in the video office will be put on the line.
Jiang Yuan had more confidence than Zhuang Wei, and while watching the surveillance, he asked, "Is there no trace of the suspect?"
"I'm not sure about the physical characteristics of the suspect yet." Zhuang Wei was also a little helpless, now that he didn't bring a photo when he was looking for someone, how could he know who he was looking for.
"Which way did the police dog chase?" Jiang Yuan asked the police officer next to him.
He dispatched the police dog, originally not to get the answer directly.
However, judging from the blood splattered at the scene, the murderer must have left with some blood. Through the sniffing of the police dogs, it is almost possible to judge the direction in which the murderer left.
The officer next to him pointed east.
Zhuang Wei also explained: "We have also extended the investigation area to the east, but there are no obviously suspicious people."
"If the monitoring can't find any clues, we have to change our thinking..." Liu Jinghui stood up and tried to help reorganize the case.
Jiang Yuan didn't follow Liu Jinghui's baton, and said first: "On the street at three o'clock in the morning, it would be suspicious if someone showed up."
Liu Jinghui was stunned: "I can't check all the newcomers... Well, the murderer is most likely a foreigner. From this perspective, the foreigner who stays on the street at three o'clock in the morning is very likely to be the murderer?"
"You can go through this line of thought first." Jiang Yuan still maintained a relatively relaxed posture.
Detecting cases through monitoring is just a relatively easy way, not the only way.
But Zhuang Wei shook his head again, and said: "Since 03:30 in the morning, there are not many people caught in the surveillance. We are all looking for people along the transportation. From the current point of view, there is no one who looks like a murderer."
What he said was not rigorous, but everyone present could understand it.
People who are still strolling outside in the early morning, even if they walk a certain distance, they still have to take transportation in the end. According to the transportation, the identity of most people can basically be determined.
Of course, there must be some people whose identities are not easy to determine, but the murderer will look like a murderer, will be nervous, walk fast, and look around. All in all, some murderers can pretend to be normal people, but some people It doesn't look like a murderer at first glance.
After all, the police were not dealing with 007. From Zhuang Wei's point of view, the person who was still hanging out at three or four o'clock in the morning, although strange, did not look like a murderer after all.
Jiang Yuan picked out a few surveillance cameras in that time period and looked at them for a while, but found no clues.
At this time, everyone's expressions became a little dignified.
Could it be that this current case will really go wrong?
Jiang Yuan's expression didn't 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, you continue to watch the video, especially analyze the video from 03:30 to During the four o'clock period, the surveillance near the bar. I will go to the scene to have a look."
"Okay." Zhuang Wei agreed.
Mu Zhiyang who was beside him hurriedly got up, ready to follow Jiang Yuan to the scene, and asked at the same time, "Do you want to watch the scene again?"
"Well, the monitoring coverage on the bar street is wide enough. If there is no trace of the murderer, it must be considered that the murderer did not enter and exit through normal means." Jiang Yuan curled his lips and said, "If that's the case, the murderer It will only leave more traces."
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(End of this chapter)