Chapter 918 The bell rings
"I heard that there is a case that cannot be advanced?" Huang Qiangmin heard that Liu Jinghui was coming and rushed over immediately.
"The source of corpse No. 2 last time, the female corpse, has never been determined." Jiang Yuan stood up from behind the computer, stretched his back, and said: "This case is more troublesome. The corruption of the corpse was not very serious. Seriously, after drawing it, the face cannot be recognized, so cranial reconstruction is useless."
Jiang Yuan dared to start a Taihe working group. Skull reconstruction is a big killer. In theory, as long as the skull is still on the body, Jiang Yuan can get the approximate face of the deceased through cranial reconstruction. In addition, with the current facial recognition technology in China With the widespread application of technology, the difficulty of determining the source of a corpse may be only one percent of that of an ordinary police station.
LV6's forensic sketching is another enhancement to the skull restoration technique. The skull restoration technique is more universal, as long as the head is present, it doesn't matter if it is rotten or not, it is more convenient to rot into bones. The advantage of forensic sketching is that it is fast. It does not need to be a week-long work like cranial reconstruction. With just a few strokes, ten minutes, or at most an hour, a drawing can be produced, and the drawing is very accurate. It is also higher than cranial reconstruction surgery, and the success rate when applied to face recognition is even higher.
However, as soon as the Taihe working group started, a corpse with an unrecognizable face appeared among the three corpses, which more or less surprised Jiang Yuan.
In contrast, Huang Qiangmin felt it was normal, and said with a smile: "It is too common that facial recognition is not possible. If you use the drawn picture as a photo, the computer will definitely not recognize it."
Jiang Yuan has had forensic sketch LV6 for a while, but he hasn't used it much, and Huang Qiangmin doesn't know much about it either.
Jiang Yuan shook his head clearly and said: "I have perfected my forensic sketch, which is similar to the level of footprint identification, and will not be unrecognizable."
While talking, Jiang Yuan took a digital tablet and drew a few strokes to draw Huang Qiangmin's current appearance. It was not vivid at all, just like an ID card photo, but the nose, eyes and ears were complete, and the human body features were intact. Neatly looking.
Huang Qiangmin was speechless for a while, then became serious again.
He has been a criminal policeman for 30 years, and he has read countless ID cards. Once he takes a look at it, he knows where to look and what characteristics he is looking for.
The same type includes criminal photos. Photographers who specialize in taking pictures of prisoners and dead people. In the era before digital cameras, it took special practice to perfectly reflect the features of the face in every photo. As for whether they are good-looking or not, before ID cards were not allowed to beautify their photos, some of them were really good-looking.
The Huang Qiangmin drawn by Jiang Yuan is certainly not good-looking, but Huang Qiangmin is also really ugly. But no matter what, there is absolutely nothing wrong with taking out this photo and posting it on the wanted poster.
In other words, Jiang Yuan's sketching skills are really good.
Like Liu Jinghui, Huang Qiangmin quickly updated his understanding of Jiang Yuan's skills, and his brows gradually furrowed: "You haven't been swept out yet?"
Jiang Yuan then reported his and Liu Jinghui's analysis and decision. Huang Qiangmin is now the political commissar of the bureau. Although he still holds the position of captain of the criminal police brigade, he has very little interference in criminal cases. On the surface, each squadron is allowed to exert its independent combat capabilities. In fact, it is delegating power to the greatest extent. To Jiang Yuan.
Otherwise, if the Ningtai County Bureau appoints another criminal police captain, he will have to work with Jiang Yuan. The key is that Jiang Yuan may not be willing to get along with newcomers, and it is not easy for a small county bureau to support such a great figure as Jiang Yuan. At least after Director Chai left, the top management has become more Buddhist.
"I basically agree with your judgment. Are there enough people to visit? Do you need support from other squadrons?" This is also the main reason why Huang Qiangmin came to understand the situation.
"With the help of the first squadron of the team, it is still possible for now." Jiang Yuan replied.
Huang Qiangmin nodded and said: "I will reorganize the staff. This kind of visit can be easily expanded."
In fact, it will expand. If the early stage of the visit goes smoothly, the case will be solved. But if the early stage does not go well, if no suspect or evidence is found in the place where the suspect or evidence is most likely to be found, the scope of the visit can only be extended. . This part can be understood as drawing a circle. As the radius increases, the area of the circle increases exponentially.
Jiang Yuan nodded, a little annoyed.
After all, he is still a technician, and even the epaulettes he wears are gray epaulettes used by professional technical police. This is what he is good at. As for visiting, it is actually a traditional art skill of criminal policemen. It is said that the strength of the soles of the feet is used to prove the ability to solve crimes.
"If there is no breakthrough in the short term, we may have to deploy two squadrons." Jiang Yuan paused and said, "I should have nothing to do these two days. If there is no result in this drowning case, I can help other squadrons first. Handle the case. Which squadron needs it?"
Except for the newly-built Taihe Working Group, there are no heavyweight cases in Ningtai. It is a bit exaggerated to say that the house is open at night, but except for sudden cases and crimes of passion, high-quality premeditated crimes and professional criminals can be said to be rare. .
Under this situation, several criminal police teams are pursuing cases. The backlog of murder cases has been cleared by Jiang Yuan to 30 years ago. However, for the other seven of the eight major serious cases, there are still many backlogs left, some of which involve serious injuries. Rape, arson, and explosion are still very serious cases, and they are worthy of tracing, but it is also more difficult to do.
Because Jiang Yuan shoulders the role of resource support, he used to work on big cases in other places. When he came back occasionally, he couldn't just pick peaches. It's the same this time. I believe there will always be a certain squadron who is chasing the previous case and looking for Jiang Yuan with technical needs.
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Sure enough, within a short time, Liu Wenkai came to the door.
"I heard that you are changing the clock here?" Liu Wenkai came over with two people, notebooks and files, smiling.
"What?" Jiang Yuan didn't understand.
"What Political Commissar Huang means is that there is no charge for clicking your clock. You can pay for more clocks according to the time later." Liu Wenkai said seriously, and added: "It is said that this is not illegal."
"Did I say that?" Huang Qiangmin walked in.
Liu Wenkai hurriedly said: "The part about not breaking the law was just a guess on my part!"
Huang Qiangmin: "Isn't the key to not breaking the law?"
"If it's not illegal, isn't it important?" Liu Wenkai asked.
Huang Qiangmin gave up: "Let's talk about the case."
"Oh, we have a robbery case here. The case occurred 12 years ago. The suspect took advantage of the closing time of a fruit supermarket to rob the owner and took away more than 7,000 yuan in sales revenue and many cartons of high-priced cigarettes. He ran away on a bicycle. The shop owner reported the case, and the police conducted a more detailed investigation..." Liu Wenkai came here in a hurry, so while introducing the case, he put photos on the table, and the table was quickly filled.
The police in Ningtai County Bureau are actually very skilled in how to use Jiang Yuan, mainly because they can't wait for the clock.
Liu Wenkai knew that Jiang Yuan could be used for two days, so he naturally brought all the equipment he could bring.
Jiang Yuan just looked at the photos one by one.
While the drowning case was still being visited, he had no idea for the time being. As for the backlog of robberies in front of him, the previous task force was quite serious in their investigation, but the prisoners were also very serious in their preparations. It can be seen from a few surveillance photos that the prisoners were wearing hats and sunglasses. With the mask and scarf and gloves, no part of the body was exposed.
Investigators also speculated that the suspect had tattoos and investigated a large number of criminal records.
Jiang Yuan pondered and thought. From his point of view, there was nothing wrong with the previous generation of investigators' ideas. The prisoner behaved very professionally during the robbery. Not only was he fully equipped and had a clear escape route, but the robbery was also clean and tidy. He was armed with a swinging stick and a knife and smashed the counter of the fruit supermarket with two clicks, while taking out cigarettes by himself. While threatening the shop owner to take money.
The whole process cannot be said to be smooth, but criminal experience is certain. This lesson is very practical, and you won’t get the taste of it even if you practice it in advance.
"How are you doing? Do you have any ideas? Do you need any cooperation from us?" Liu Wenkai was quite positive. Even though he was his own technician, Huang Qiangmin said that the clock must be returned, so Liu Wenkai was naturally reluctant to waste any more.
Jiang Yuan thought for a while and said: "We can only try the same thing. Judging from the ideas you have done, I think we can start from the tool marks."
When he chooses an investigation plan now, he often chooses it from his own technical library. Of course, technicians all have this idea. When faced with the same problem, those who are good at Java will use Java, and those who are good at C will use C. If you are good at throwing the blame, prepare the pot in advance. The same principle applies.
Jiang Yuan then followed the idea of tool marks and directly drew the appearance of the stick and knife used by the suspect based on the marks left at the scene.
After the picture comes out, search in the tool trace database.
After such a search, several photos of the tools or tools involved appeared on the page.
Jiang Yuan compared them one by one, but after flipping through a few pages, he found that the front end of the swing stick in a picture was a little special.
When he came back, he saw that it was a closed fight case. The two sides fought each other, one side used a stick and the other side used a chair, so each hit eighty big boards...
"Catch these two people and ask them." Jiang Yuan called up the information of one party in the fight and looked at the height, age and other information to become more sure.
Liu Wenkai then got two pieces of printing paper, looked at the time, and was a little surprised after all: "It came out so soon?"
"Luckily, the first method I tried produced results." Jiang Yuan said, waving to Wang Chuanxing, and said: "I remember that the drowned deceased had many wounds during his lifetime, which should be caused by violent beatings. .”
"Can we find tools based on this?" Wang Chuanxing was listening, and he immediately drew inferences.
Jiang Yuan shook his head: "It should have been done by hand, but after being beaten, she might buy some anti-inflammatory drugs, painkillers, etc. She might not necessarily go to a big hospital, but maybe a small clinic nearby."
"Clinic staff should be very impressed by women who have been beaten within a month." Liu Jinghui was thinking with his head covered, but now he sat up.