Chapter 116 New Clues
Fingerprints are to trace detection what old wine is to a drunkard, and the top brand in a club is to Lao Se Pi.
I will never forget the wine I tasted, the sheets I rolled on, and the fingerprints I read.
For dry fingerprint inspection, who has never had a backlog of cases or fingerprints that have failed to be compared.
When encountering a case, the fingerprint comparison cannot be completed for a while. Some trace inspections want to be carried in their arms. When others are swiping their mobile phones in the toilet, they swipe their fingerprints.
Each fingerprint is like an identity mark, with its own different characteristics.
Just like a person's figure, some fingerprint papillae are relatively flat, like an airport, while some are wider, like undulating mountain peaks.
Some fingerprint ridges are soft and thin, like the waist of a willow leaf, while some are thick and thick, like a bucket.
In the eyes of ordinary people, fingerprints are just messy thick lines, but in the eyes of fingerprint examiners, every fingerprint that is studied and played with has its own life.
In front of the autopsy table, Lu Chuan changed his position and carefully observed the half fingerprint extracted from the tape mark on the deceased's ankle.
"Did you find anything?"
Shen Yan was also very happy that Lu Chuan could find this fingerprint. Forensic doctors don't really study this when doing autopsies.
Whether it is forensic pathology or forensic anthropology, it either studies how the corpse died or who the corpse is, but it all starts with the corpse itself.
Extracting fingerprints from corpses, to be honest, this is a bit of a composite talent.
General forensic doctors cannot do it, nor can ordinary trace examinations.
"I feel like this fingerprint is familiar... but I can't remember where I've seen it before. I'll go back to the office and have a look in the system after I finish it."
The fingerprints made by Lu Chuan have all been compared in the system. Yes, both success and failure are recorded.
As long as you pull out these fingerprints and compare them, you should be able to find something.
“Let’s collect trace evidence first, and then send it to the provincial department after we finish it.”
This time the trace evidence inspection progressed faster, and the results found were similar to the last corpse. similar.
In addition to the physical evidence collected from hidden parts such as fingernails and mouth, similar hair was also found on the second corpse.
"This should be the hair of an animal, most likely a dog or a cat, but of course it is not necessarily a dog or a cat."
Lu Chuan agreed with Shen Yan's judgment: " There is this kind of hair on many parts of the two corpses, indicating that the deceased should have been in frequent contact with this kind of hair during his lifetime."
"Is it possible that the murderer left something on the body when he dumped it? "
"This is also possible. The murderer could not have left the body naked. It should have been wrapped with something, but the specific situation depends on the test results."
There are obviously many possibilities for hair speculation.
But no matter which one, you need to wait for the test results to come out.
"You should rest first. You have just finished dissecting the body and helped me with the trace evidence testing. I will hand over the things first and then check for fingerprints."
Beside the autopsy table, two people were looking at each other. After struggling several times, Shen Yan's physical strength was indeed very high.
There were fine beads of sweat on his forehead, sticking to a few strands of hair.
"Okay, then you go and do your work. I'll go back to the office and take a rest."
The two separated, and Lu Chuan quickly returned to the current survey office.
"Master, this is the trace evidence collected from the second corpse."
Handing the evidence box to Liu Guodong, Lu Chuan immediately sat down in front of the computer and started typing on the keyboard.
Liu Guodong, who was just about to deliver the physical evidence, looked at Lu Chuan who was busy: "Let's take a rest first. This case is not making much progress now, and it is probably going to be a protracted battle."
Lu Chuan shook his head: "No, Master. When I was collecting trace evidence, I found that the wrists and ankles of this corpse also had glue marks left after being bound with tape."
Liu Guodong nodded, these The colloid material on the traces has been collected. After analysis, it can be determined what kind of tape the murderer used, which will have some value. "In addition to these, this time half a fingerprint was found on the glue mark on the left ankle of the corpse."
Huh?
“Half a fingerprint?”
Lu Chuan's words surprised Liu Guodong. Fingerprints were found on the body, which was probably left by the murderer.
Yang Sen and Lao Bai also gathered around: "Were fingerprints found on the body?"
"This is a big discovery. It was most likely left by the murderer."
< br>While operating the computer, Lu Chuan retrieved the fingerprints he had seen before and spoke: "The fingerprints were found on the tape binding mark on the inside of the left ankle of the corpse."
"It is very likely that the murderer removed the fingerprints ”
"And this half fingerprint feels a little familiar to me. I feel like I have seen it somewhere before..."
Pop!
The sound of Lu Chuan typing on the keyboard stopped, and what was displayed on the screen was the fingerprint identification analysis record that Lu Chuan had done half a month ago.
A slightly distorted but very clear fingerprint appeared on the screen.
“This is it!”
Half a month ago, while investigating Song Kun's murder case, Lu Chuan took some time off from his busy schedule to conduct an identification analysis on the fingerprints submitted by the police station and the criminal police brigade.
At that time, there were a total of twelve sets of fingerprints, nine of which were successfully identified, and there were three more sets that were not successfully identified because there was no matching object in the system.
After that, the matter of these three sets of fingerprints was dropped, but after all, Lu Chuan had carefully processed these fingerprints.
Time passed not long ago, so the impression is quite deep.
“This is it!”
Lu Chuan pointed to one of the three sets of fingerprints that had not been successfully identified at first: "That's the fingerprint!"
"Let's match it and see if it works!"
Liu Guodong sounded very excited. , this is definitely a key clue.
Although the fingerprint itself was not successfully matched, the cases involved in this fingerprint can be retrieved.
When the time comes, if you follow the clues, you may make new discoveries.
While Liu Guodong was speaking, Lu Chuan was already preprocessing the fingerprints collected from the corpse.
It’s one thing to look familiar to yourself, but it’s another thing to put it into the system for comparison.
There is only half a fingerprint on the corpse, and there are many ridge segments. In fact, the identification and analysis of this fingerprint is still very difficult.
At least, with the strength of Liu Guodong, Yang Sen and Lao Bai, they probably can’t handle it.
But in front of Lu Chuan's advanced fingerprint identification and analysis skills, this somewhat blurry half fingerprint looked like a dancer without clothes.
Naked in front of you, no secrets at all.
In just ten minutes, the feature points were marked and the relevant data were calculated.
Ding!
The system immediately issued the familiar sound of a successful complete match.
“It’s done!”
"It's really done!"
Yang Sen and Lao Bai shouted excitedly.
Liu Guodong was still holding the trace evidence box that Lu Chuan handed him. Looking at the successful comparison report on the computer screen, his mouth split open: "I'm going to report the good news to Team Qin, Xiao Lu, you this time Another meritorious service!”
(End of this chapter)