civil forensic

Chapter 918: The Bell Rings

Chapter 918: The Bell Rings

"I heard that a case can't be advanced?" Huang Qiangmin rushed over immediately when he heard that Liu Jinghui had arrived.

"The source of the second corpse, 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 body was not seriously decomposed. After drawing it, the face could not be recognized. In this case, the skull reconstruction technique is useless."

Jiang Yuan dared to set up the Taihe working group. Skull restoration is a powerful weapon. Theoretically, as long as the skull is still intact, Jiang Yuan can use skull restoration to get the approximate facial features of the deceased. In addition, with the widespread application of facial recognition technology in the country, the difficulty of determining the source of the corpse may be only one percent of that of an ordinary police station.

Level 6 forensic sketching is another important enhancement of skull reconstruction. Skull reconstruction is more universal. As long as the head is there, it doesn't matter if it is rotten or not. It is more convenient to rot it into bones. The advantage of forensic sketching is that it is fast. It does not take weeks like skull reconstruction. It only takes a few strokes, ten minutes, or at most an hour to produce a picture. Moreover, the accuracy of the picture is higher than that of skull reconstruction, and the success rate of facial recognition is even higher.

However, just as the Taihe working group started, one of the three bodies appeared with an unrecognizable face, which more or less surprised Jiang Yuan.

In contrast, Huang Qiangmin thought it was normal and said with a smile: "It is very common that facial recognition cannot be performed. If you use a drawing as a photo, the computer will definitely not recognize it."

Jiang Yuan has had Forensic Sketch Level 6 for some time, but he has not used it much, and Huang Qiangmin doesn't know much about it.

Jiang Yuan shook his head clearly and said, "My forensic sketching skills are already well practiced, and my level is about the same as footprint identification. It won't be to the point where I can't recognize it."

As he spoke, Jiang Yuan picked up a digital tablet and with a few strokes, he drew Huang Qiangmin's current appearance. It was not vivid at all, and looked like an ID card photo, but with a complete nose, eyes, ears, and other human features.

Huang Qiangmin was speechless for a while, and then became serious again.

He has been a criminal policeman for 30 years and has read countless ID cards. Just by taking a glance, he knows where to look and what features to look for.

The same type of photos include criminal photos, where photographers specialize in taking photos of prisoners and the dead. In the days before digital cameras, it took practice to perfectly reflect the facial features in every photo. As for whether it looks good, before ID photos were not allowed to beautify, there were a few that really looked good.

Jiang Yuan's drawing of Huang Qiangmin is admittedly ugly, but Huang Qiangmin himself is really ugly. But no matter what, there is absolutely nothing wrong with taking this photo and pasting 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 frowned: "You didn't even scan it out like this?"

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 serves as the captain of the criminal police brigade, he rarely interferes with criminal cases. On the surface, he allows each squadron to exert its own combat power, but in fact, he delegates the greatest power to Jiang Yuan.

Otherwise, if 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 work with newcomers, and it is not easy for a small county bureau to support a great god like Jiang Yuan. At least after Director Chai left, the higher-ups have become more Buddhist.

"I basically agree with your judgment. Are there enough visiting personnel? Do you need support from other squadrons?" This was also the main reason why Huang Qiangmin came to understand the situation.

"With the help of the First Squadron of Team Five, it's still possible for now." Jiang Yuan replied.

Huang Qiangmin nodded and said, "I will reorganize the personnel. 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 is not smooth, if the suspect or evidence is not found in the most likely place, the scope of the visit can only be expanded. This part can be understood as drawing a circle. As the radius increases, the area of ​​the circle increases exponentially.

Jiang Yuan nodded, feeling a little annoyed.

After all, he is still a technician. Even the shoulder straps he wears are the gray shoulder straps used by professional technical police. This is also the job he is good at. As for visiting, it is actually a traditional art of criminal police. The so-called calluses on the soles of the feet prove the ability to solve the case.

"If there is no breakthrough in the short term, we may have to transfer two squadrons." Jiang Yuan paused and said, "I should be free for the next two days. If there is no result in this drowning case, I can help other squadrons with the case first. Which squadron do you think is needed?"

Apart from the newly established Taihe Working Group, there have been no major cases in Ningtai. It is a bit of an exaggeration to say that people leave their doors unlocked at night, but apart from sudden cases and crimes of passion, high-quality premeditated crimes and professional criminals are rare.

In this situation, several criminal police teams are pursuing cases forward. Jiang Yuan had cleared up the unsolved homicide cases dating back 30 years, but there are still many unsolved cases for the other seven of the eight major crimes. Some of them involve serious injuries, rape, arson, and explosions. They are very serious and are worth tracing back, but they are also quite difficult to handle.

Jiang Yuan was responsible for resource support. He was usually out on big cases. When he came back occasionally, he couldn't just pick up the peaches. This time was the same. I believe there was always a squadron that was mad about the case ahead and had technical needs and came to Jiang Yuan.

Sure enough, after a while, Liu Wenkai came to the door.

"I heard that you change the clock here?" Liu Wenkai came over with two people, notebooks and files, smiling.

"What?" Jiang Yuan didn't understand.

"Political Commissar Huang said that you don't need to pay for the hours you have worked, but you can just pay more hours later based on the time you have worked," Liu Wenkai said seriously, adding, "It is said that this is not illegal."

"Did I say that?" Huang Qiangmin walked in.

Liu Wenkai said hurriedly: "The part about it not being illegal is just my blind guess!"

Huang Qiangmin: "Isn't the key point that it is not illegal?"

"As long as it's not illegal, isn't that the key?" Liu Wenkai asked back.

Huang Qiangmin gave up: "Let's talk about the case."

"Oh, we have an unsolved robbery case here. The case happened 12 years ago. The suspect took advantage of the closing time of a fruit supermarket and robbed the owner. He took away more than yuan in sales revenue and several cartons of expensive cigarettes, and fled on a bicycle. The owner reported the case to the police, and the police conducted a relatively detailed investigation..." Liu Wenkai came in a hurry, so he put photos while introducing the case, and soon the table was full of them.

The police officers at Ningtai County Bureau are actually very skilled in how to use Jiang Yuan, the main problem is that they cannot get a clock.

Liu Wenkai knew that he could use Jiang Yuan for two days, so he naturally brought all the equipment he could.

Jiang Yuan looked at the photos one by one.

The drowning case is still under investigation, and he has no idea for the time being. As for the robbery case in front of him, the previous task force investigated it seriously, but the criminal was also very well prepared. From a few surveillance photos, it can be seen that the criminal was wearing a hat, sunglasses, a mask, a scarf and gloves, with nothing on his body exposed.

Based on this, the investigators also speculated that the suspect had tattoos and investigated a large number of people with criminal records.

Jiang Yuan pondered and thought. From his point of view, there was nothing wrong with the thinking of the previous generation of investigators. The criminal was very professional in the robbery. Not only was he fully equipped and had a clear escape route, but he also robbed the supermarket cleanly. He smashed the counter of the fruit supermarket with a baton and a knife, and took cigarettes for himself while threatening the owner for money.

The whole process can't be said to be smooth, but I have criminal experience. This lesson is very practical, and you can't practice it in advance.

"How about it, do you have any ideas? Do you need our cooperation?" Liu Wenkai was quite active. Although he was his own technician, Huang Qiangmin said that he must return the clock, so Liu Wenkai naturally didn't want to waste any of it.

Jiang Yuan thought for a while and said, "We can only try one by one. From the ideas you have done, I think we can follow the tool marks."

When he chooses investigative plans now, he often selects them from his own technical library. Of course, all technicians think in this way. When faced with the same problem, those who are good at Java use Java, those who are good at C use C, and those who are good at passing the buck prepare the pot in advance. It's the same principle.

Jiang Yuan then followed the idea of ​​tool marks and based on the traces left at the scene, he directly drew the baton and knife used by the suspect.

Now that the picture is out, go into the tool trace database and search.

With just this search, many tools or photos of tools involved in the case appeared on the page.

Jiang Yuan compared them one by one, but after only flipping through a few, he found that the front end of the baton in one picture was slightly special.

When I came back, I saw that this was a case of a fight that had been settled. One side used a baton, and the other used a chair, so they were both given 80 lashes...

"Catch these two guys and interrogate them." Jiang Yuan retrieved the information of one party in the fight, including height, age, etc., and became more certain.

Liu Wenkai then got two sheets of printed paper, and then looked at the time. He was a little surprised: "It came out so soon?"

"Lucky, the first method I tried produced results." Jiang Yuan said, waving to Wang Chuanxing and saying, "I remember that the drowned victim had multiple injuries, probably caused by violent beatings."

"Can we find the tools based on this?" Wang Chuanxing was listening nearby and immediately applied what he had learned to other situations.

Jiang Yuan shook his head: "It should be a hand beat, but after being beaten, she might go to buy some anti-inflammatory drugs, painkillers and the like. She may not necessarily go to a big hospital, a small clinic nearby is also possible."

"The clinic staff should have a deep impression of the women who were beaten within a month." Liu Jinghui had been thinking with his head covered, but now he sat up suddenly.

(End of this chapter)