Lu Chuan's age seemed to be in his early twenties.
Wang Hao was able to join the task force established by the provincial department at such a young age, so he naturally thought that there was someone behind it.
Otherwise, he also knew Liu Guodong, the current surveyor of Haizhou City. The two had participated in a fingerprint battle organized by the provincial department together, and they were comrades who were tied for last place.
Of course, there are more than just two of them tied for last place. Under normal circumstances, there are always seven or eight people.
After all, not everyone can successfully compare fingerprints in every battle.
This requires luck and even more strength.
Liu Guodong of the Haizhou Criminal Investigation Detachment did not join the task force. Instead, a young criminal police officer like Lu Chuan did.
Wang Hao naturally had a guess as to what this meant.
However, this has nothing to do with him.
Especially when Lu Chuan started doing such low-level tasks as spot surveying and taking photos, Wang Hao's senses were greatly improved.
No matter how you got into the task force, if you are discerning and know how to respect your seniors, you are a good comrade.
But as he continued to do it, Wang Hao discovered that something was wrong.
The process of the on-site survey and photography done by Lu Chuan was very standard. The selected points were just right. There was no need to point out all the marked points by himself. Everything was done in an orderly manner.
This is not the performance a young prospect should have.
Later, Wang Hao had a feeling of such a contrast.
Twenty minutes ago, Lu Chuan changed his camera.
Wang Hao knows that thing, and the current investigation office of Binzhou Criminal Investigation Detachment also has it.
Fingerprint camera.
Unlike ordinary cameras, fingerprint cameras are special cameras designed for criminal investigation departments.
There are many types of fingerprint cameras, and their common features are fixed focal length, precise one-to-one ratio shooting system and self-powered lighting device.
Fingerprint cameras are easy to operate and flexible to use, but their popularity is not high because they are relatively expensive, so ordinary cameras are mostly used to take fingerprints.
What surprised Wang Hao wasn't that Lu Chuan could take out or use the fingerprint camera.
But he was surprised at the fingerprint collection that Lu Chuan was doing. If he read correctly, Lu Chuan was collecting fingerprints from a rubber glove that was found in the trash can and taking a picture.
He had just inspected it, and the entire operating room was very "clean."
Operating table, shadowless lamp, floor, surgical instruments, etc.
He had observed all possible places and basically found no valuable fingerprints.
The few that were left were scratches and had no collection value at all.
As for collecting fingerprints on rubber gloves, Wang Hao had never thought about it.
Can't do it.
But Lu Chuan not only succeeded, but also explained it to him.
The economic development situation of BZ City is similar to that of Haizhou, or even a little behind.
Therefore, the Binzhou Criminal Investigation Detachment’s on-the-spot investigation and trace inspection are also a team of two people.
Wang Hao also works part-time in field survey and trace inspection. He is quite emotional about Lu Chuan, a young and young man who has just graduated and started working and is so capable.
Lu Chuan didn't have as many ideas as Wang Hao. This operating room converted from the basement was obviously the "first crime scene."
Although the other party cleaned the operating room after the "operation", many traces could not be eliminated by rough washing with water.
Advanced fingerprint identification analysis brings Lu Chuan more than just simple fingerprint identification capabilities.
For example, Lu Chuan can use image processing on fingerprints not only on fingerprints, but also on other physical evidence analysis.
"Brother Wang," Lu Chuan was not polite. In a basement of more than 100 square meters, Lu Chuan would not be able to handle the on-site survey alone.
Wang Hao can help: "Although the other party has cleaned the operating table, instruments, shadowless lamps, etc., there are still some fuzzy fingerprints left, and there are some traces left in the cracks on the floor, in the tiles in the corners, at the entrance to the sewer, etc. .”
"In this case, I'll wipe off the fingerprints first, and you can help me get the fluorescent lamp."
Wang Hao naturally took the fluorescent lamp from Lu Chuan's hand and shined it on the edge of the operating table.
A blurry mess of fingerprints, like a pile of shit, appeared in sight.
This kind of fingerprint cannot be extracted using commonly used methods such as powder and magnetic powder.
The fingerprints are a blur, with lines superimposed and distorted. Due to the intervention of external forces, the deformation is very serious.
Ordinary extraction methods can only produce a shadow, and there is no way to carry out subsequent identification and analysis.
Lu Chuan's method is much simpler. He takes photos directly and uses image processing later to extract the fingerprints in layers, which can increase the probability of successful identification.
Wang Hao took over the fluorescent lamp and officially started working with Lu Chuan.
To get started, this was something Wang Hao only did when he first started working.
However, Lu Chuan's technique was indeed exquisite. It took Lu Chuan two hours to perform the operation on one operating table.
Of course, the results are also gratifying.
Three fingerprints, blurred into three lumps of shit, have been collected.
In addition, some dried blood samples were collected from the gaps between the wheels of the operating table.
What happened next was much simpler. Lu Chuan, who was lying on the ground, dug into the gaps between the floor tiles.
Wang Hao found a small bench and squatted next to Lu Chuan, watching him use tweezers to dig out a mess of dirty stuff from the gaps in the floor tiles.
The work of field survey is boring but also interesting.
The seemingly “clean and tidy” basement hides the subtle traces of sin and crime.
The Binhai Criminal Investigation Detachment's preliminary trial of Chen Gang is still continuing, and the work of Lu Chuan and Wang Hao has finally come to an end.
Four thirty-two in the morning.
Lu Chuan bared his teeth while supporting his waist, which was already somewhat unable to straighten up.
But looking at the evidence in a cardboard box, the smile on Lu Chuan's face was still satisfied.
Seventy-two evidence bags were filled with dirty things dug out from the cracks in the ground.
There was still some hair in the sewer, and some dander was extracted from the joint between the sink drain hole and the basin body.
In addition, there are thirteen fingerprints.
"Brother Wang, I'm not very good at evidence examination and analysis. Please worry about the DNA test. I'll do the fingerprint identification."
Wang Hao nodded numbly. He had been conducting field surveys for more than ten years. To be honest, Wang Hao rarely saw Lu Chuan's meticulous operations.
Wang Hao can also do things like buttoning floor seams, cleaning toilets, and rubbing sinks.
What made Wang Hao look at Lu Chuan with admiration was the method Lu Chuan used when collecting fingerprints.
Many of them were methods he had never seen or heard of before.
But the effect is obvious, and the thirteen fingerprints are the most powerful illustration.
"Okay, leave the DNA extraction to me, just these fingerprints..."
Thirteen fingerprints, although the number is quite large, the quality is really indescribable.
If a normal fingerprint sample is said to be a beautiful woman with long hair who is 1.7 meters tall, weighs 50 kilograms, is slim and smooth, and has curvy front and back.
The fingerprints collected by Lu Chuan this time...should be Yang Sen's niece.
He is 1.5 meters tall, weighs 180, and has a toothy, bald, pockmarked face.
I really can’t put it down.
"It's okay, I have a solution."
Lu Chuan is full of confidence, advanced fingerprint identification and analysis, and is not afraid of cold and cold things!
