National Forensic Doctor

The Luojin City Criminal Police Detachment does not have its own vehicle inspection department. Similar to Changyang City, they also put the suspect's abandoned car into the Traffic Police Detachment's Vehicle Inspection Center.

Everyone then took a car and headed there. Jiang Yuan sat in the back seat and scanned all the fingerprints, footprints, DNA and other physical evidence involved in the case. He also looked at the information provided by technical investigators and other parties.

LV5’s fingerprint and footprint identification is very fast when you look at these photos. Jiang Yuan didn't need to deal with it, he could just check it out after a little checking.

For Jiang Yuan, who is used to backlog of cases, this current kidnapping case provides too many clues.

If he was given enough time and sufficient investigation resources, Jiang Yuan might be able to identify the criminal and other information through several directions.

However, in the current situation, the identity of the criminals is already known, so it is not important. What is important is where they are hiding now and where they will go.

Showing the relationship between people and places is the scope of forensic botany, and it is also one of the reasons why Jiang Yuan chose this case.

Huang Qiangmin and others are probably still confused at this time. There are too few people in China who have mastered this technology, and normal people probably have not considered it.

Traffic police detachment vehicle inspection center.

In a large indoor parking space, there is the JAC pickup truck that we are waiting to see this time.

The car itself is a bit shabby, embodying the image of a poor family still working hard.

Looking at the war-damaged interior of the car and the mess in the back, Jiang Yuan understood that it was not stolen, but was one of the reasons for calling the police.

"Have you taken fingerprints and DNA, right?" Jiang Yuan asked, a few meters away from the car.

"Absolutely. Anyway, someone has already swiped it with a brush. I also took a lot of photos." In the administrator's understanding, a car that has taken fingerprints and DNA is considered to have been fully inspected.

In fact, that's right. When a normal and complete vehicle passes through this period, it is basically considered to have been inspected.

When Jiang Yuan heard this, his slightly worried mood disappeared.

What he was most afraid of was that he had already collected trace evidence, so he would have to look at the results compiled by others. For him, a VL3 novice in forensic botany, it would be somewhat troublesome.

However, if it is just to take fingerprints and DNA, normal people will not wipe the entire car, but will only use a survey light to scan it again, and then go forward to collect evidence when they see fingerprints and footprints.

For the collection of trace evidence or forensic botany, this level of preparation is nothing.

"Bring us our tools."

Jiang Yuan asked for a brush and began to brush away the particles from all over the car.

From chassis and tires to floor mats, bumpers, air filters, radiators...

Huang Qiangmin, Mu Zhiyang and others stood in front, some not keeping up with Jiang Yuan's rhythm.

While chatting with the leaders of the Luojin City Criminal Police Detachment, Huang Qiangmin asked Jiang Yuan: "Are we looking for trace evidence? Don't you usually do it very late?"

In his impression, Jiang Yuan usually tried to find trace physical evidence when he could not find other evidence.

As the name suggests, trace evidence is small in quantity, and the amount of information it can provide is definitely not as much as normal evidence. In addition, trace evidence is still very expensive, so it is said that it will be considered at a later stage.

But this time, what Jiang Yuan wanted to find was pollen and sporopollen, so he said: "Luojin City has probably searched for all the evidence that can be found. I just want to find another way and try another plan. It should be OK." ?”

Jiang Yuan used a little emotional intelligence and asked Political Commissar Ge from the Luojin City Criminal Police Detachment next to him with a smile.

He is usually too lazy to use this thing. He didn't expect a promotion or salary increase. Huang Qiangmin was still there to protect him, so he continued to use his emotional intelligence day by day, which was a real waste.

This time it’s a little different. We’ve changed provinces, but it’s still not the same as in Shannan Province. Cui Xiaohu looks young. In this case, he has to use a little bit of emotional intelligence.

Of course, Huang Qiangmin has taken all these into consideration, and emotional intelligence is also charged and is not wasted.

Political Commissar Ge didn't know that every gift in destiny has a price, and some are particularly expensive.

He also smiled slightly because Jiang Yuan said to find another way.

It would indeed be a bit embarrassing if someone found evidence in the things I had searched for here. Even if Comrade Jiang Yuan, a famous expert hired by the ministry, found evidence, he would still be embarrassed.

However, it would feel much better if Jiang Yuan found another way to solve the case. It's not that we didn't do a good enough job, it's that we took the wrong path and we were unlucky.

Political Commissar Ge chuckled: "As expected of Jiang Yuanjiang, the strategy at the beginning was different. Well, this is the best. We all work together to find ways to solve the case..."

Huang Qiangmin smiled and said nothing. Jiang Yuan has never shown this before.

Political Commissar Ge talked about the case and continued: "The kidnappers this time are extremely arrogant. We suspect that they must have made sufficient preparations for a long time in advance, otherwise they would not be able to avoid such an intense search. The three people even wanted to cause trouble on purpose and kidnapped the child on the spot in front of other parents..."

"Do they want you to pay the ransom quickly?" Huang Qiangmin is very clear about the social impact of the case.

If it is a secret kidnapping case, then the police will have enough time to fight with the kidnappers, and they will not choose to pay the ransom easily.

However, if it is a kidnapping case that has a high impact but is not particularly serious, in order to quickly eliminate the impact and solve the case, especially to rescue the hostages, the superiors may pressure the police to pay the ransom quickly.

The balance here requires at least a LV1 kidnapper theory.

Political Commissar Ge knew exactly what Huang Qiangmin meant. He nodded solemnly and said, "It is indeed very possible. We speculate that they wanted to get money and went abroad directly. At the beginning, they even wanted Bitcoin. We said the currency was illegal, and we kept saying it but didn’t pay it out..."

"Two million in cash is quite a big bag. Can they take it out?"

The three of them are all known, so it is naturally impossible to deposit cash into the card. In fact, in today's banks, if you want to deposit an additional 500,000 yuan, you have to ask the color of the dog that Emperor Gaozu saw when he was 18 years old, not to mention that the serial number of the money must be recorded.

Political Commissar Ge's face darkened, and he continued: "We have several guesses in this regard. One is that they can hide the money and find someone to get it out later. The other is that they probably have a planned route, such as starting from Smuggled out by sea.”

The most famous thing in Baijiang Province is Baijiang. From Baijiang, you can take a small boat to go to sea, and then change to other fishing boats at sea. Going abroad is not as difficult as imagined. This process mainly requires money. A small boat with some speed will cost hundreds of thousands. The money given to fishing boats must be at least hundreds of thousands before anyone is willing to accompany you on the adventure.

Normal stowaways cannot afford such a large amount of money.

"Where is the victim? Can it be determined whether he is alive or dead?" Huang Qiangmin asked again.

"It was OK yesterday, but I haven't made the call today yet." Political Commissar Ge paused and said, "We verify the child's physical condition every time, but the danger is still there."

…

Jiang Yuan did not participate in the conversation between the two, and concentrated on studying the car.

The car's body was covered in pollen and spores.

In the natural environment, pollen from wind-pollinated plants can travel hundreds of meters. Think about the season when catkins and poplars are in full bloom. It’s just that the willows and poplars are too upright and have attracted people’s complaints.

In different time periods, pines, cypresses, mulberries and vines are the main force in spreading pollen. It is normal for pollen to float hundreds of meters away.

Most importantly as a testament to location, the types and proportions of pollen and palynomorphs are different in each area.

To put it simply, if the murderer stands in front of a garden door, the pollen pattern obtained by the murderer will be completely different from that obtained by standing one meter away.

Of course, to make a pollen map of this level, LV3's forensic botany is needed.

"Do you have a centrifuge?" Jiang Yuan first scrubbed and then washed, then classified the washed sludge and put it aside for subsequent use of the centrifuge.

"There is it in the trace evidence laboratory." Political Commissar Ge said.

"Then please trouble them to process it." Jiang Yuan directly outsourced the primary tasks.

Luojin City is the capital of Baijiang Province, with good economic conditions, and the newly built trace evidence laboratory has three or four years of experience. Compared with ordinary physical and chemical laboratories, etc., the technical content of the trace evidence laboratory is much higher, and sifting out sludge should not be a problem.

Jiang Yuan asked for various strong acids, preparing to use them to process samples taken from other places.

Strong acids are used to nitrate the background in samples, such as sand, clay, fiber, lignin, humic acid, etc.

It may sound a bit incredible, but in fact, when all the above things are corroded by strong acid, spores and pollen will still be there.

Sporangia, pollen grains, remains of insects, fungi, and shells of crustaceans all have a layer of special polymers that can resist strong acids that cannot be resisted by quartz, clay, etc. This polymer is called sporopollen in plants. The pigment is called chitin in insects and fungi.

After this step, and even this step, it is best to do it in the laboratory.

This is not only because the strong acids used are dangerous, but also because the laboratory ultimately needs to be clean to protect it from contamination.

There are also spores and pollen floating in the air in urban spaces.

For the next day, Jiang Yuan spent almost all of his time in the laboratory and in front of the microscope.

The white-shirted men in the Luojin City Criminal Police Detachment had high expectations for Jiang Yuan, but they also didn't understand.

Cui Xiaohu actually didn't understand either, but he had to give peace of mind to the criminal police in Luojin City, and explain to the leaders of the ministries and commissions who were paying attention to the case...

After a lap, Cui Xiaohu felt that he was more tired than the kidnapper.

Huang Qiangmin patted Cui Xiaohu on the shoulder with understanding. It was not easy.

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