National Forensic Doctor

Jiang Yuan paced gently on the Banqiao, thinking about how to conduct the next survey.

This exploration work is very different from those in the past.

The survey must be meticulous, otherwise something will slip through the net.

But the area is so large, and the survey is too detailed, and we are afraid of delaying the fighter plane. The news of the arrest of Huang Li's drug gang here probably hasn't spread too widely yet, but it will eventually spread. By then, the criminal suspects will simply run away, and the evidence will be easily wasted.

Because there are a total of six floors, plus a basement, all of which are the focus of the survey, the Changyang City Bureau's Banqiao is not enough, and a batch has to be purchased temporarily.

The bridge under Jiang Yuan's feet is made of acrylic, which is a plastic material commonly used in fish tanks. It is transparent and strong. A person weighing more than 200 kilograms can carry some equipment on his back or carry a corpse without being stepped on.

If the light is transparent, it will be convenient for people like Jiang Yuan to reconstruct crime scenes or do blood analysis and other tasks.

Of course, the price of acrylic board bridges is also the most expensive. Changyang City Bureau used to buy a little every year and still saved some, but now there are fewer for various reasons. Although a batch was urgently purchased, in order to control costs, only the sixth floor was completely covered with transparent bridges. Most of the bridges downstairs were made of metal, so they were covered.

Jiang Yuan walked on such a Banqiao, constantly thinking about the survey plan.

Huang Li's office is the top priority of this survey, but it covers an area of ​​more than 200 square meters and contains huge desks, sofas, chairs, wine cabinets, file cabinets and safes. Calculated by surface area, the workload is overwhelming.

Not only that, this was also the office where Huang Li's drug gang fought to the end. They persisted in the room for a short period of time, burned some documents, flushed away some drugs, and finally tried to set a fire, but were put out and only burned down. A wall of curtains.

Therefore, it is basically appropriate to describe this office as devastated.

On the other hand, this office is also valued by the Changyang Criminal Division Center.

The establishment of Changyang City Criminal Division Center is equivalent to that of the Criminal Police Brigade. More than half of the manpower is concentrated in this main building, and more than half of this half works on the sixth floor.

Therefore, the site on the sixth floor has actually gone through a round of investigation.

During the second survey, we still need to find conclusive evidence, which is an almost impossible task.

but……

Jiang Yuan thought about it. If there was any advantage to the second survey, it was that there were no mandatory tasks.

There are standards for an investigation. The fingerprints that should be extracted, the biological materials that should be extracted, and the photos that should be taken must not be missing.

These are not only the basic resources for the criminal police to solve the case, but also important information for subsequent detection or correction, which will be used in the final prosecution. Therefore, any spot inspection, trace inspection, or forensic examination must have tasks and standards when conducting an investigation.

But there is nothing to say about the second survey. If you discover something new, it is your ability. If you cannot discover something new, it is normal.

As for Jiang Yuan, he no longer has to take fingerprints, footprints, blood stains and other things step by step.

Look first. If you feel it is unnecessary after looking, you don’t need to collect fingerprints or footprints - this step will save a lot of time, and it is also the most time spent by the investigators.

As for how to judge whether it is necessary or not, the requirements are high.

Theoretically speaking, different footprints and fingerprints actually have distinct signs, but it is too difficult for ordinary people to remember them. Even after training, if they are not sensitive enough to the relevant information, it may not be possible.

From Jiang Yuan's experience, skill levels above LV4 are more appropriate.

For example, in Footprint Learning, I have recently been promoted to LV5, so I am still a little bit more comfortable with it.

Of course, if it had been used yesterday, the combat power of LV6 would probably be more effective.

No matter what, after finalizing the plan, Jiang Yuan implemented it without saying a word.

No matter how good the design and ideas are, it will not work without practical work. Just like in the configuration of the protagonist group in American TV series or Hollywood movies, there is always a silently dedicated but powerful technical nerd, who is always Asian. Then you see that the protagonist, despite being ignorant and incompetent, still plays games without any knowledge. It's always bad...

The real world is obviously not so weird.

In reality, criminal technicians with decisive strength will become the leaders, just like the Eight Tigers of Criminal Investigation of the ministry, who are basically experts in various fields. When they go out to solve crimes, they basically direct the local criminal police to investigate and solve crimes. .

Jiang Yuan first looked at the fingerprints and footprints collected by others.

Through these fingerprints and footprints, the anti-drug detachment has arrested more than a dozen people who slipped through the net. They are basically the key members of Huang Li's drug trafficking gang.

Anyone who is not a key member cannot enter this six-story building.

Jiang Yuan sorted out the characteristic information of some fingerprints, memorized them carefully, and then walked into Huang Li's luxurious office with a survey light.

What he took was a multi-light source and multi-color temperature exploration lamp with lithium battery. Simply put, it is an exploration lamp that can illuminate multiple colors.

What he is carrying is a large version of the footprint lamp, which has the same meaning as the fingerprint lamp, but is thicker than the fingerprint lamp or similar strong-light flashlight. The advantage is that the light source is comprehensive, more fingerprints and footprints can be seen, and the effect is better. .

Mu Zhiyang, who was already a little drowsy, quickly ran over and helped carry the footprint lantern.

Jiang Yuan then picked up a new set of fingerprint powder and brushes. There are many ways to colorize fingerprints, including but not limited to various fingerprint powders, 502, pyrinone, etc. In theory, they can also be used Gold is used to shape the body, but it is not important to determine the fingerprint, so there is no need for Jiang Yuan to bother.

Most of the fingerprints in the room were actually duplicates. The previous fingerprint detectors have taken them, and there are basically any fingerprints in the backend database that can be matched.

If you can't compare, there is a high probability that there is nothing in the library, and it doesn't make much sense for Jiang Yuan to take it out.

Therefore, Jiang Yuan did not search in conspicuous places, such as office desks, safes, etc. His fingerprints must have been rubbed over and over again.

Of course, this is because the big office is highly valued, and the density of other trace inspections is also high. There is no need to go down to the sixth floor. After leaving the big office, the level of detail of the trace inspections is very low.

Despite this, Jiang Yuan checked the big office first today.

In addition to fingerprints, he also noted footprints and other marks, including those from gunshots.

It was not until dark that Jiang Yuan finally found himself next to a water dispenser, uncovering most of the unfamiliar fingerprints.

I easily clicked on 13 feature points, and after running twice in the background, a 22-year-old young man came out.

Jiang Yuan marked it in the background while taking pictures with his mobile phone and sent them to Deputy Captain Jin of the Anti-Narcotics Detachment.

There is a high probability that he is a middle-level cadre of Huang Li's gang, perhaps a distributor, or perhaps their bodyguard.

Jiang Yuan didn't need to distinguish. It is also good for the drug gang to seal this building tightly. Every fingerprint found here has a high probability of being innocent.

In other words, every fingerprint in this building must first be labeled as guilty. Even the cleaners and housekeepers in the building cannot know anything about what is happening in the building.

After doing this, Jiang Yuan turned around and said, "Let's go back to eat. We'll stay at the police station tonight."

Mu Zhiyang and Lu Tongda were exhausted from carrying things, so they responded repeatedly.

Instructing the people left behind to pay attention to safety, Jiang Yuan returned to the corner of the criminal police detachment's office. After setting up a camp bed for himself, he lay down and looked at the fingerprints and footprints in the background to facilitate the continued investigation tomorrow.

Mu Zhiyang gave Lu Tongda a camp bed and placed the bed next to Jiang Yuan. He sighed again and said, "You said, the three of us together are worth at least one apartment building, but we ended up sleeping in three 99 beds. bed."

"Are these three beds only 99? Is there a link?" Lu Tongda's eyes lit up. He was a single man. If he put a camp bed in his work, a camp bed in his car, and a camp bed in the living room, wouldn't his life be sublimated?

Mu Zhiyang coughed twice: "That's an exaggeration. Buy two get one free, which adds up to one hundred and seventy-eight. Understand the spirit."

"That's not bad, what are the keywords?" Lu Tongda let himself go and started playing with the shopping website. After placing an order, the local tycoon's appearance even surpassed Jiang Yuan's.

…

early morning.

Jiang Yuan sat up smelling the strong scent of sandalwood.

"This smell...is a bit familiar..." Jiang Yuan washed his face with mineral water, wiped it with tissue paper, and then walked out of the office.

The door to the room opposite was open, and there was a little fragrance lingering.

When Jiang Yuan entered, he saw a more familiar pot of red eggs, red duck eggs, red goose eggs... and a green emu egg in the middle.

"Master." Jiang Yuan shouted.

Wu Jun turned his back to the door, beckoned, and said, "Come here and help me take a look at this."

Jiang Yuan walked over quickly and saw a sweeping robot in front of Wu Jun. At this time, his naked body was exposed on the table.

"This is?"

"I bought it second-hand online. I want to take it home and give it a try. They say the sweeping monk is the sweeping monk. We believe in the three cleansings, so we have to do the homework of sweeping the floor."

Jiang Yuan asked hesitantly: "Does sweeping the floor with a sweeping robot count as homework?"

"Of course it counts. The great monk sweeps the floor with a broom and mops the floor. Aren't they borrowing tools? Now in the new era, the tools have evolved into sweeping robots. Using sweeping robots to sweep the floor should naturally count as homework...and , I’m not doing nothing, I’ve been fixing this thing all morning.”

"Okay...by the way, can we trust Sanqing?"

"Of course you have to believe it, this is what the higher-ups advocated," Wu Jun said with his fingers: "Alarm alerts are cleared every day, warehouses are cleared every month, and accumulations are cleared every season - our Ningtai County is now one of the three counties in Shannan Province. Quite typical."

What could Jiang Yuan say, he could only peel a red egg for breakfast.

"Is the injury serious?" Wu Jun asked, pouring him a cup of tea.

"It's a slight concussion, a few bruises on the leg, a slight strain on the left arm, a few minor strains, nothing more, just a minor injury at most." Jiang Yuan explained in a little more detail.

Wu Jun nodded. If this was indeed the case, the injury was not serious.

"Fortunately, you are usually obedient and have paid all the thanks." Wu Jun thought for a while and then said: "Okay, you can do whatever you need to do, I will help you speak here."

"Say...what?" Jiang Yuan hesitated.

"Then will you stay and listen?" Wu Jun asked back, taking on the posture of a master.

"No, no, no." Jiang Yuan quickly shook his head.

"Let's just say, it's not easy for you to work in Changyang, even if you are very capable. Just do whatever you have to do, as long as I'm here." Wu Jun took out a palm-long peach wood sword and lightly Place it gently on the table and close your eyes slightly.

Jiang Yuan didn't dare to say anything more, so he took a few eggs and left.

After returning to the office, I gave the eggs to Mu Zhiyang and Lu Tongda, tidied up a little, and went straight to the crime scene in Shuidong.

Because Huang Li's office had been checked last time, Jiang Yuan chose the basement this time.

When I entered, I saw several broken mechanical parts piled at the door. The battle in the basement is quite fierce. The police and armed police equipment can break most of the scene objects in urban warfare.

Jiang Yuan subconsciously picked up a piece of mechanical part. It was a bent water pipe with a broken end at one end and a small part screwed at the other end.

Jiang Yuan couldn't help but wonder if fingerprints or DNA might be missing at the connection location between the parts and the water pipes.

He immediately unscrewed the threaded structure between the two.

When I shined the light again, a fingerprint actually appeared faintly.

"A good start!"

Mu Zhiyang screamed immediately after eating a belly full of red eggs.

Jiang Yuan's eyes also lit up. There was a high probability that this fingerprint was left by the installation master. In the basement of the building where Huang Li's gang is located, the only thing that needs to be installed by the installation master is the drug-making machine.