Chapter 697: Don't Know the Road Ahead

Police dogs are good helpers, but they will pollute the site after entering.

Technicians, whether cute or not, wearing headgear and gloves, at least don't shed hair. Police dogs not only shed hair, but also drool, and have little feet stepping around. It must be guarded against.

However, the advantages of police dogs are also very obvious. The sense of smell is a technology that humans are relatively weak and difficult to replace with technology. As long as they are trained properly, one or two police dogs can find a lot of clues.

Tao Lu asked for five police dogs at once.

Two police dogs were left behind to work in the courtyard, and the remaining three police dogs went straight out of the courtyard and started searching in the wild.

Including Jiang Yuan and Liu Jinghui and others, they couldn't help but put most of their attention on the police dogs. These guys with oily hair, as long as they bark a few times, this case will be sublimated.

Tao Lu was even a little nervous.

He was a little unclear now whether he wanted the dog to bark or not.

Woo woo...

The evil wind passed through the forest, making a suppressed sound.

In such a wild house in the wilderness, if only two or three people, three or five people lived, hearing such wind, it is estimated that there is some fear.

However, when hundreds of police officers stayed in such a small house, hearing the wind with a slightly intimidating meaning, they only felt funny.

"Go back." Jiang Yuan waited for a long time, and seeing that the two police dogs left in the courtyard had no intention of going online, he felt a bit tired.

If you can't smell it, you can't smell it. It doesn't make much sense to wait any longer.

Liu Jinghui sighed: "It's a pity."

Qiao Shengli, who had been hiding in the corner, wanting to leave but not daring to, asked in a low voice: "What's a pity?"

Liu Jinghui sighed long: "Big cases are not common. It is really rare to dig out a big case from scratch. Think about it, if you discovered a new species of botany, what would it feel like?"

"Often discovered." Qiao Shengli said prettily: "Last year, 300 species of plants were discovered. Our research direction is not here..."

Liu Jinghui waved his hand and sighed again.

Jiang Yuan took a ticket of technicians back to the criminal police branch.

He slept on the road and was still awake when he arrived, so he started fingerprint comparison work on the spot.

The case this time is still quite special. In the same wild big house, if it fell in the mountains of Ningtai County, the police station would estimate that everyone would be energetic from top to bottom, and just focus on catching people.

But in a place like Qingling Mountain, whether you can focus on catching people is hard to say.

Jiang Yuan could only seize the time to do things. The corpse was not found in the courtyard, which does not mean that there are no other corpses in the case. As for the problem of "focusing," it is estimated that speed will have an effect.

Jiang Yuan has a very simple understanding. If he can do things that normal police can't do, the case solving rate should theoretically be improved.

Just like the case in front of him, Jiang Yuan accelerated the whole process today, and is confident that he will be able to finish fingerprint and footprint identification in the next two days. But if Jiang Yuan didn't participate, a strong bureau like the Guangju Bureau would organize a group of elite soldiers to come out, and it would take about a week to complete the task.

The Guangju Bureau itself does not have LV4-level fingerprint experts and footprint identification experts. If they want them, they have to borrow them from the municipal bureau. Even if they can borrow them, they are not on call. And even if the experts really come, and they are experts above LV4, under the premise of tacit cooperation, it is not necessarily possible to complete the task in two or three days.

This is under the premise that Jiang Yuan's LV5 crime scene investigation and LV6 crime scene reconstruction laid the foundation.

Finally, the experts needed by the Guangju Bureau or the criminal police branch are not just fingerprint experts. They also need footprint identification experts, forensic material experts, forensic botany experts, etc. to cooperate.

Assuming that Jiang Yuan's opponents, that is, the criminals, have a clear understanding of the police's strength, normally speaking, they should make a misjudgment.

This is also the way he thought of, which is relatively reasonable and safe to handle this case.

Therefore, Jiang Yuan returned to the office and acted immediately.

There were criminal science technicians who came to help, and Jiang Yuan also used and directed them without being polite.

Fingerprint comparison is Jiang Yuan's starting skill, and it is also the item Jiang Yuan investigated first. Now that he is back in the office, what Jiang Yuan is dealing with is also fingerprints.

Fingerprints are called the king of evidence, not without reason. Its efficiency is extremely high, and its pointing is clear. As primates, even if humans can avoid it, it is very easy to leave fingerprints—doing things with gloves is more annoying than wearing masks or condoms.

Therefore, putting yourself in their shoes, is it easy for a criminal to wear gloves throughout the process? It's really not. This is like requiring a person to wear a mask when going out and wear a condom when going to bed. The stricter the requirement, the shorter the time to persist, and the harder it is to execute.

Moreover, before and after the event, everyone can not wear it if they can. Similarly, taking masks as an example, once they reach a place where they can take off their masks, many people can't wait to take them off. The situation at the crime scene is similar. Many people leave cigarette butts at the door of the crime scene, or leave fingerprints in the alley where they leave, which are extremely common.

The fingerprints left in the house in Qingling Mountain are more wanton.

Several technicians also handled it quite well.

It was still dark outside, but because the fingerprint processing was smooth, the mood of several people was still quite good.

Dong Ai, who was next to Jiang Yuan, soon hummed a song, and then smiled: "People who know the ropes take fingerprints differently. Some fingerprints taken by scene investigators or criminal police really make people want to hit them."

Feng Chao, a trace inspector sitting opposite him, smiled: "Don't talk about some scene investigators and criminal police, even some fingerprints taken by trace inspectors, I want to hit them when I see them."

"What trace inspector..." Dong Ai reacted halfway, stared, and said: "Old Feng, speak well, are the fingerprints I took dirty?"

"The envelope before, you did it with the iodine fuming method, right? The big brown fingerprint that appeared, what effect is that? The photo taken is a lump. The shit my son pulled in the mud is better than that." Feng Chao opened the mockery face-to-face, not used to his colleagues at all.

Dong Ai was stunned, his face couldn't hang on, and said: "Old Feng, why mention old things, that was when."

"Lest you float." Feng Chao was happy.

Dong Ai sighed helplessly, turned to Jiang Yuan and said: "Old Feng, this guy, there is no time when his mouth is forgiving. I was too anxious at that time, the light was not adjusted well, the iodine fuming didn't show up for a few minutes, the time for taking photos was relatively tight, and there was shadow covering, Old Feng has been nagging me for this for several years."

"It's quite amazing to have a slip-up only once in a few years." The case was complex, and Jiang Yuan was now doing things with emotional intelligence.

Feng Chao smiled again: "That certainly can't be a slip-up only once in a few years, that would be a god."

Feng Chao looked like an old oil stick in the office, not seeking progress at all, just for the sake of mouth pain.

However, as far as Jiang Yuan is concerned, Feng Chao's fingerprint identification technology can at least have LV2 level, and can be offered as an expert in Qinghe City, but in the police station in the capital, it is general labor. It is estimated that he doesn't feel much sense of achievement when doing things.

Jiang Yuan didn't care about them, and continued to do fingerprint comparison. When there was a result, he recorded it.

Tao Lu returned quickly, habitually came to Jiang Yuan's office, not the conference room.

"How is it? Any new things?" Tao Lu didn't look at the screen and asked Jiang Yuan directly.

"The fingerprints scanned so far, 2 men and 7 women are matched. Women are generally better-looking, basically because they were punished for public security and made records. Mainly selling sex, and also participating in other public security cases." Jiang Yuan looked at the record book and added: "2 men are also the same."

Tao Lu had expectations and nodded, saying: "That is to say, this building is a sex den?"

"It's possible." Jiang Yuan said.

"Opening a sex den in the mountains of Qingling Mountain, and the result is still this kind of five or six hundred? Is this afraid that the business is too good, and the girls can't stand it or what?" Feng Chao poked his head out from the other side of the desk and said it quite reasonably.

Tao Lu and Jiang Yuan looked at each other and couldn't help nodding.

Indeed, although selling sex is an illegal act, it must follow market rules. If this is a store, it is opened so far away, and the road is difficult to walk. How many people will come to play?

It won't come to many people even if it is safe. Is safety the core appeal of people who come out to play? Obviously not. If they pursue absolute safety, they won't come out to prostitute.

"The customer unit price is too low." In Tao Lu's vision, this is likely a very high-end store. After all, it is not easy to come here. People who are willing to come have paid such a high cost, and they should be willing to pay a higher price. In this way, the person who built this courtyard is profitable.

Otherwise, what is the picture?

"Gathering to take drugs?" Liu Jinghui came in from behind and heard the discussion of several people.

"It is possible." Jiang Yuan paused and said: "No rapid detection, can it be detected later?"

Because of the severity of drug punishment, hiding in the deep mountains and old forests to take drugs is not rare. If there are some ice sisters to accompany, for addicts, it is not a kind of enjoyment.

"However, according to common sense, if this is a drug den, it is built a bit too well. No need. When addicts see drugs, they don't care about the environment around them. Doing this, it is better to get to a place with convenient transportation. That kind of residential area where no one lives is more comfortable than here." Liu Jinghui didn't know which case he thought of, his mouth curled, and he said: "Many of those who take these things are wasted. Where can they climb mountains and wade through water like this."

"Is the body of the prostitute good?" Feng Chao smiled: "If the body of the prostitute is good, it can only show that the seller is not working hard."

"Still quite logical." Liu Jinghui praised.

"Bring people back to see first." Tao Lu didn't want to continue the discussion, looked at the time, and it was almost dawn. It was just right to send people out at this time.

Jiang Yuan also nodded and reminded: "Remember to ask where they went. If they left because of a homicide case, they might be underprepared."

In addition, criminals who have killed people will be more likely to make the decision to kill, and it is unknown whether they will upgrade their crimes. ===== CHAPTER 698 =====