National Forensic Doctor

Flying drones in the capital, especially flying drones with cameras that are legal and legal, is still a bit challenging.

However, the police officers of the Zhengguang District Bureau still have some methods and execution capabilities. Several young people from the map reconnaissance team, carrying several drones, carefully monitored the area within two kilometers of the clothing donation box. 's flew up.

Two kilometers doesn't sound far, but it's actually equivalent to a circle with a radius of 2 kilometers, covering an area of ​​more than 12 square kilometers.

In Beijing, how many buildings must be within 12 square kilometers?

As far as this article is concerned, places such as gardens, cemeteries, parks, botanical gardens, and zoos cannot be easily let go, and must be scanned carefully.

That is to say, the Beijing Bureau has sufficient manpower. The detachment leader Tao Lu mobilized more than 100 people from the third team to watch the video, but the progress was not delayed. In the next few days, everyone returned to their normal schedule. They watched the video at work and after work. There is no delay at all when I go home to train my children.

A headless case was completed step by step, and none of the criminal policemen in the special team was hospitalized midway. You can imagine how abundant the manpower of the Zhengguang Bureau was.

For several days, the detectives in the photo investigation took thousands of screenshots and found hundreds of illegal buildings, but no green plants that met the requirements were found.

Similar to previous incidents, as time goes by, everyone's confidence will inevitably be weakened.

Everyone knows that the longer time passes, the less evidence there will be. Not to mention the most important corpse in this eucalyptus, which was probably disposed of during this period, the plants that everyone was looking for were probably also disposed of.

When Tao Lu thought about this level, he couldn't help but find Liu Cheng. When they were about to get off work, they found Jiang Yuan together and expressed his doubts: "The population flow in the capital is very large. If the murderer kills someone, if he chooses to escape, If so, will the green plants he planted be resold or discarded? If so, our idea of ​​finding the murderer through plant species may become rootless."

He didn't say anything about carving a boat and asking for a sword, which would be considered polite.

Jiang Yuan was already packing his things and getting ready to get off work. His work of finding pollen had basically come to an end, and his current focus was on finding the corresponding plant communities.

Jiang Yuan had obviously thought about Tao Lu's problem. He sorted out his words and said: "Although we can't guarantee 100%, we have found so many types of pollen and the area required is also very large. No matter whether the place is rented or rented, Or live here, the murderer's financial strength should be pretty good. Of course, the murderer might just live or work here, and he wouldn't be able to get rid of these plants."

"This is..." Tao Lu felt a little relieved, but his doubts were not completely dispelled. As Jiang Yuan said, this is not a 100% guarantee.

Liu Cheng said from the side: "Is two kilometers too short?"

Tao Lu and Jiang Yuan both looked at him.

Liu Cheng didn't care about the price of firewood and rice, so he said: "The clothing donation box is in the commercial street. The radiation range is not within two kilometers of the surrounding area. We have only designated a two-kilometer area. Will it be missed?"

Tao Lu looked at this unworthy man and said with hatred: "I have checked 2 kilometers for a week and still haven't finished..."

"Let's make an alternative." Jiang Yuan also feels that 2 kilometers is not enough, but the environment in the capital is like this. Adding another kilometer will more than double the workload - the area of ​​a circle with a radius of 3 kilometers is 28 square kilometers, which is less than The currently designated 12 square kilometers is so large that even the Peking Opera Criminal Police Detachment feels the burden is too great.

Tao Lu breathed a sigh of relief at first, and then felt nervous again.

He feels a bit like he is doing Cao Cao now, and he is still in a state of not succeeding yet. He is anxious and afraid at the same time. He wants to go deep alone, but he is also afraid of being cut off.

Liu Cheng seemed to be watching the live broadcast and said without fear of excitement: "There is a subway in front of the commercial street. The murderer lost his bloody clothes. Could he want to take the subway?"

Tao Lu almost spat out a mouthful of blood. Now he especially wanted to solve the problem. He glared at Liu Cheng and said, "It doesn't matter where he goes. The crime scene is nearby. The most important thing now is to find the crime." on site."

He said and looked at Jiang Yuan.

Jiang Yuan looked at the two of them. They were both old Muggles who didn't understand forensic botany, and they were quite worried.

Jiang Yuan then said: "I think the investigation idea is okay. Let's continue the investigation for a while and make a decision after the first wave of searches within two kilometers is completed."

One problem with forensic botany is that most criminal police officers cannot understand it. As a result, everyone's anxiety has become very serious.

At the same time, using forensic botany techniques is inherently time-consuming, which is also a factor that increases anxiety.

Tao Lu could only nod, gave a forced smile, and said, "It's dinner time, let's have something to eat together."

"No, I brought food at home." Jiang Yuan paused and said, "I'm too lazy to go out today. I plan to go to bed early tonight."

Tao Lu said politely: "I'll show you the specialties of the capital. I'll eat the food I brought at home later."

Jiang Yuan shook his head and said, "My dad made it and sent someone to fly it here. If you don't eat it at night, it will be wasted."

Tao Lu was stunned: "Is our dad so good?"

"He has been killing cattle and sheep at every turn recently, and he also wants me to have a taste of it." Jiang Yuan said a few more words and went back by himself.

Most of the specialties in Beijing are not must-try.

The next day.

Jiang Yuan came to the bureau early to help check the image data captured by the drone.

The Jiang Yuan Jiu special class he led has a lot of people. Counting the subsequent support, it has almost 30 people now. This number may not seem conspicuous in the Zhengguang Branch with several thousand people, but such a group of people are all experienced homicide detectives, so they are still quite valuable.

Even for the Zhengguang Branch, it is not easy to temporarily deploy such an effective force.

As for Wang Chuanxing and others, they were indeed newcomers when they first followed Jiang Yuan. But now, among the members of the entire accumulation team, there is no one who doesn't have seven or eight lives in their hands, and most of them can easily reach double digits.

The criminal police detachment of Zhengguang Branch is not so wealthy.

A group of people asked for a large conference room, set up their formation, and got busy.

Wang Chuanxing and others are already familiar with the task of watching video images. Moreover, they are all accustomed to cooperating with Jiang Yuan. When encountering images that cannot be seen clearly, they don't have to work hard like the criminal policemen of the Zhengguang Bureau and just throw them to Jiang Yuan. Jiang Yuan just waited for feedback.

Jiang Yuan does this level of image enhancement at a very fast speed.

To be honest, LV5's image enhancement is a waste when used on videos of this level, but the effect is extremely outstanding.

Soon, a green plant planted on the balcony was marked by Jiang Yuan.

"Begonia, rose, phalaenopsis...all match." Jiang Yuan took the printed photo, circled the flowers on it with a pen, and showed it to Tao Lu.

Tao Lu was overjoyed: "It matches? Is this the one?"

"Not sure, but most of the flowers are matched." Jiang Yuandao.

"Didn't you say that the pollen map is unique?" Tao Lu frowned slightly. When it comes to action, you have to be very careful.

Jiang Yuan explained: "What we see now is only a corner of the balcony. We can't be sure where he is on the balcony and whether he has other plants in the room. We can't see it in the video. But I think the similarity is so great that it is The level is already worth a visit.”

"Then go." After hearing this, Tao Lu immediately made a decision, sneered twice, and said to Jiang Yuan: "My tone just now was not good. This is an old problem of mine. Don't take it to heart..."

"No." Jiang Yuandan smiled calmly. In some places, the criminal police captain would be furious after contacting Huang Qiangmin. For a criminal police detachment captain with such good conditions as Tao Lu, it doesn't matter if he has a temper.

Soon, a group of criminal police officers were gathered by Tao Lu.

Jiang Yuan also brought Mu Zhiyang and Wang Chuanxing, and the three of them joined Liu Cheng's team and headed for the Huilong Building where the target was located.