"Are there any other clues?" Wang Song shook his head: "Basically, there are none. The crime scene was in the deep mountains and old forests. The body was eaten by wild beasts, leaving no trace."
"Had it not been for a traveler who went into the mountains and accidentally discovered the body, no one would have been 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, he could clearly see that it was a composite fingerprint after the superposition of multiple layers of fingerprints. Moreover, there were blood stains on it and incomplete scratches that were vaguely visible.
"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 also said so."
"But when I handled it again, I wasn't particularly careful, and some residual scratch fingerprints were still left." Such fingerprints, in Mandarin, mean that the hand slipped.
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 of someone who could 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. He could see these details and mastered the intermediate fingerprint identification and analysis skills in Lu Chuan. It can be done when.
However, if you want to conduct identification and analysis of fingerprints at that time, you will 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 while.
This is also the most difficult fingerprint that Lu Chuan has encountered so far. Lu Chuan could not guarantee whether the identification would 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 screen 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 since the person is on vacation, death is not even considered a work-related death. Not to mention sacrifices and the like. Regardless of the identity of the police officer, this was a simple murder case with few clues.
Therefore, even back then, the investigation of the case was not as intensive as the effort invested in Song Kun's murder. However, it was a pain for Zheng Bin's newly pregnant wife.
And the son who has no father even before he is born. Over the years, Zheng Bin's wife has not remarried. The Water 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 main event comes. Because the fingerprints were scratched and wiped by the murderer, there were 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. This afternoon, no one disturbed Lu Chuan.
When Gao Wenxiang and others were smoking, the topic also revolved around the fingerprints identified and analyzed by Lu Chuan: "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: "Zheng Bin's case I saw it back then.”
"As for that fingerprint, don't blame me. Experts from the provincial department have been studying it for more than ten days, but they haven't figured it out 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 the 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 and watched 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 pm. 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, as long as you mark the feature points and calculate some data, 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 damaged, and it has been deformed by force to such an extent that the original fingerprint cannot be seen anymore."
"I used probability analysis to find 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 run away. Let's have a cigarette." Wang Song watched Lu Chuan drag his fingerprints 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. However, 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 in the smoking room. Gao Wenxiang saw Lu Chuan and Wang Song coming out and asked first.
"He's running around in the system. Let's have 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 thread.
"What's going on with Bureau Wang?" Lu Chuan had been busy identifying and analyzing fingerprints in the afternoon and didn't bother 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. The two cases you analyzed this morning have all been arrested."
"I heard there wasn't much interrogation, and I gave up on everything on the way back from custody." Gao Wenxiang felt that because he sat next to Lu Chuan in the morning, he felt more familiar with Lu Chuan than others: "I just heard that Bureau Song made a statement , at the end of this fingerprint battle, you will definitely get 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 performance of the Haizhou City Public Security Bureau's 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, he solved the murder case by himself, so giving him a second-class merit is not a high achievement. 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 long puffs of the Zhonghua that was almost burning to the butt of the cigarette, and then put the cigarette butt out in the pedestal ashtray at hand: "You guys chat first, I'll go back and see the comparison results."
