Chapter 142 Second Class Merit
“Are there any other clues?”
Wang Song shook his head: “Basically there are none. The crime scene was in the deep mountains and forests, and the body had been eaten by wild beasts. No What traces were left behind?”
“If it weren’t for a traveler who accidentally found the body, no one would be able to find it.”
Compared with death, disappearance is the most difficult case. .
If you die, at least you know someone is dead.
Missing, no one knows what happened to the person.
The fingerprints extracted from Zheng Bin’s field dagger were not just blurry.
After Lu Chuan enlarged the fingerprint, it was obvious that it was a composite fingerprint after superimposing multiple layers of fingerprints.
And there are blood stains on it, as well as incomplete scratches that are vaguely discernible.
"After the murderer used the dagger, he should have wiped the fingerprints on the handle with something."
Wang Song nodded: "Well, the experts from the provincial department said so too."
"But when I handled it again, I wasn't particularly careful, and some residual scratch fingerprints were still left."
Such fingerprints, in Mandarin, are slippery.
Not only that, after the murderer wiped the handle of the knife, it should have been covered with a layer of other fingerprints.
No need to ask, the murderer must have handed the handle of the knife back to Zheng Bin's hand.
As expected to be able to successfully identify and analyze fingerprints in two murder cases, Wang Song nodded while listening: "That's right, that's what the experts from the provincial department said."
Lu Chuan nodded, able to see Lu Chuan can figure out these details when he masters the intermediate fingerprint identification and analysis skills.
However, if you wanted to conduct identification and analysis of fingerprints at that time, you would be unable to do so.
"Brother Wang, please wait a moment, it may take me a little longer."
The processing of this fingerprint obviously cannot be completed in a short time.
This is also the most difficult fingerprint that Lu Chuan has encountered so far.
Lu Chuan cannot guarantee whether the identification will be successful in the end.
The first step is to digitize the fingerprint and complete the data layering through two-dimensional transformation.
Compared with the stacking of fingerprint patterns seen with the naked eye, after data is layered, the upper and lower layers of the fingerprint image will be easier to process.
On this side, it's easy to talk about, but it's troublesome to deal with.
Lu Chuan had to manually filter the data, and it took more than an hour just to complete this step.
The conference room was eerily quiet.
Except for the sound of Lu Chuan typing on the keyboard, no one else was breathing hard.
Although nine years have passed since the murder of Zheng Bin, there has been no conclusion.
Was Zheng Bin killed because of the case in his hands, or was he killed because of something he encountered in the mountains.
And because people are on vacation, death is not even considered a work-related death.
Not to mention sacrifices and the like.
Regardless of the identity of the policeman, this is a simple murder case with few clues.
So, even back then, the investigation of the case was not as intensive as the effort put into Song Kun's murder.
However, it was a pain for Zheng Bin's newly pregnant wife.
And the son who has not been born yet has no father.
In these years, Zheng Bin's wife has not remarried. The Shui District Criminal Police Brigade has arranged an auxiliary police job in the back office, which can be regarded as a disguised form of help for orphans and widowed mothers.
After the fingerprints are layered, the highlight is.
Because the fingerprints are scratched and wiped by the murderer, there are no reference fingerprint patterns at the beginning and end of the front and rear ends.
What Lu Chuan needed to do was to restore the multiple lines that had been rubbed into long lines into the shape of a fingerprint.
No one disturbed Lu Chuan this afternoon.
While Gao Wenxiang and others were smoking, the topic also revolved around Lu Chuan’s identification and analysis of fingerprints: “Old Sun, you are the strongest in this wave of ours, do you think there is any chance?”
Sun Hao exhaled a puff of smoke: "I have also seen Zheng Bin's case back then."
"As for that fingerprint, let alone me, the experts from the provincial department have studied it for more than ten days, but they have not solved it yet."
"Lu Chuan..."
Others also sighed. Obviously, although everyone knows that Lu Chuan is very powerful, he is at least a lot better than everyone else. He was able to successfully match two murder cases that had entered the provincial fingerprint battle. Of course, he was very powerful.
This shows that Lu Chuan has reached the level of top experts in the provincial department in fingerprint identification analysis.
However, even so, the experts from the provincial department could not figure out this fingerprint.
While everyone was smoking, Lu Chuan's fingerprint preprocessing also entered the most critical stage.
Wang Song had been sitting next to Lu Chuan, watching with his own eyes how Lu Chuan removed his fingerprints bit by bit.
Wang Song basically couldn't understand Lu Chuan's operations.
If I have to describe it, I can only say that I am not aware of it.
“Finally it’s almost done!”
4:28 p.m.
After four hours of fighting, this blurry fingerprint finally turned into a third of a fingerprint with clear lines and normal lines in Lu Chuan's hands.
Next, just mark the feature points and calculate some data, and then you can compare them in the system.
After all the hard work, the last word is long.
“Can it be done?”
Wang Song looked even more nervous than Lu Chuan, with fine beads of sweat on his forehead.
Lu Chuan smiled bitterly: "This fingerprint is too badly mutilated, and it has been deformed to the extent that the original fingerprint is no longer visible."
"I used probabilistic analysis. , and found the most likely possibility of fingerprint extension. As for whether it can be successful... no one can say for sure. "
"Let's put it into the system and let's have a cigarette."
Wang Song watched Lu Chuan drag his fingerprint into the system comparison interface, then got up and went to the smoking room outside the building with Lu Chuan.
At half past four, it was already dark.
But none of the criminal police officers who participated in the fingerprint battle left. They were all waiting for Lu Chuan's identification and analysis results.
“Is it done?”
Everyone was there in the smoking room. Gao Wenxiang saw Lu Chuan and Wang Song coming out and asked first.
"Running around in the system, smoking a cigarette."
In fact, everyone really wanted Lu Chuan to come out and smoke.
After all, Chinese plum tastes much better than red plum.
Lu Chuan distributed cigarettes to everyone as usual and lit one himself.
Although Lu Chuan is not addicted to smoking, as Lu Chuan's father said, cigarettes are the best social props between men.
With this, there is a common topic.
"What's going on with Bureau Wang?"
Lu Chuan had been busy identifying and analyzing fingerprints in the afternoon, and had not bothered to inquire about the two cases in the morning.
I asked casually.
“Haha, we were talking about this just now.”
Sun Miao came over and said, “Bureau Wang has just come back not long ago. In the two cases you analyzed this morning, both people were arrested. Arrived.”
"I heard that there wasn't much interrogation. On the way back from custody, I gave up everything."
Gao Wenxiang promised that because he sat next to Lu Chuan in the morning, he felt that he was more familiar with Lu Chuan than others: "Just now I heard that Bureau Song has said that after this fingerprint battle, you will definitely get a second-class merit!"
Second-class merit!
Hearing this, everyone participating in the battle had different expressions.
Who doesn’t want to do meritorious service?
Not only is there honor, but the key is money.
However, it is not something that ordinary people can do to solve the backlog of two murder cases at once.
As far as the Haizhou City Public Security Bureau’s performance in this fingerprint battle, not to mention the following six days, there are only two murder cases in the backlog. Even if it is placed in the provincial department, it is a significant result.
As for Lu Chuan, who solved the murder case by himself, giving him a second-class merit is not considered high.
Of course, first-class merit is probably unlikely.
Unless Lu Chuan solves half of the thirteen murder cases, that's pretty much it.
While chatting, Wang Song took two strong puffs of the Zhonghua that was almost burning to the butt of the cigarette, and put out the cigarette butt in the pedestal ashtray at hand: "You guys chat first, I'll go back and compare. Results.”
(End of this chapter)