Chapter 16 Review

There was still a wisp of mist in the early morning of Ningtai County.

Jiang Yuan rode his electric bike and entered the yard of the Criminal Police Brigade. His arms were already a little wet.

"Good morning." A passing police officer smiled at Jiang Yuan naturally.

Jiang Yuan was stunned for a moment and hurriedly replied: "Good morning."

It was the first time that he was greeted on the road after being in the unit for so long. The policeman who greeted him looked familiar, but Jiang Yuan didn't expect his name and unit.

Shaking his head, Jiang Yuan turned and entered the building. Two more people nodded and greeted him in the middle.

Although everyone was in a hurry, Jiang Yuan's mood also became happy unconsciously.

Entering the office, Wang Zhong and Yan Ge were already sitting inside.

"Forensic Doctor Jiang is good, he is very capable." Yan Ge praised with a sound of admiration, and also used the title of Forensic Doctor Jiang. To be honest, this is much more respectful than Xiao Jiang.

In the local police force, where there is no money, no power, and no promotion, respect is the most precious thing.

Jiang Yuan listened to Yan Ge's words and immediately realized that the suspect in the Liu Yu injury case arrested yesterday must have a result.

"Have you caught him? Have you rechecked?" Jiang Yuan looked over expectantly.

"Caught him. If you want to recheck, take a look yourself." Yan Ge handed several fingerprint cards to Jiang Yuan directly.

When Jiang Yuan matched the fingerprint of the "Liu Yu injury case" yesterday, he first made several fine-tunings. Secondly, he only marked 8 feature points, so it was necessary to recheck.

According to regulations, the same 8 feature points are only the standard for investigation. In other words, if the fingerprints have 8 feature points in common, it can be considered as a match for the criminal police team, and they can implement arrests, conduct interrogations, approve arrest warrants, etc.

However, if you want to enter the litigation stage and use fingerprints as evidence, you must issue a fingerprint identification certificate, and the minimum requirement for the fingerprint identification certificate is that 13 feature points are the same and there are no exclusions.

However, now that there are real people, it is easy to match fingerprints.

After all, the quality of the fingerprints is something that needs to be examined. On the other hand, no matter how good the fingerprints are, they cannot show all the details of the fingerprints.

However, if there is a real person present, the details will be more comprehensive if the fingerprints are taken several times. The reverse operation, using the fingerprints taken by the real person to match the fingerprints left at the crime scene, is obviously easier to match.

Jiang Yuan took the fingerprint card, scanned it twice, and his heart was much calmer.

In fact, if you think normally, someone on the criminal police team must have reviewed the fingerprints. Otherwise, Yan Ge and Wang Zhong, the two trace inspectors, must have been busy and exhausted, and they would not have time to play guessing games with him.

However, Jiang Yuan immediately opened the drawer, took out the horseshoe mirror, pressed the fingerprint card, and looked at it.

At just one glance, Jiang Yuan was sure that he had matched.

The original fingerprint took too long to look at, and it was the fingerprint that had just been done, so it had long been imprinted in his mind.

Despite this, Jiang Yuan still turned on the computer again, called up the fingerprints of the "Liu Yu injury case", and scanned them again.

This time, he mainly looked at whether there were any exclusions.

Is it possible for two identical fingerprints to appear in the world? Theoretically, purely from a theoretical perspective, there should be. Because this is a probability problem. When the number is large enough, a monkey randomly pressing the keyboard has the probability of writing a Shakespeare.

However, if there is a feature point that is different in the two fingerprints, then, both theoretically and practically, these two fingerprints can be excluded and identified.

Jiang Yuan carefully identified them from beginning to end, and did not find any exclusions. He then randomly ticked off 13 feature points, breathed a sigh of relief, and smiled: "There is no problem with the re-examination, it should be possible to identify the same."

Yan Ge, who originally wanted to watch the fun, took a breath of cold air when he saw Jiang Yuan's last move.

He was notified last night and had already done the same job - as for why he was called out of bed for a re-examination instead of Jiang Yuan, it was naturally because he was a veteran trace examiner and was most qualified to issue a fingerprint identification certificate. It was definitely not that the criminal police captain, Comrade Huang Qiangmin, had sent a private message and was worried about wasting the precious combat power of the police force.

However, because he had done it once yesterday, Yan Ge looked at Jiang Yuan's last move and became more and more suspicious of life.

Although he had a problem of low IQ late at night yesterday, it was reasonable to spend about ten minutes on a fingerprint identification.

But how long did Jiang Yuan take to mark the feature points just now?

Yan Ge inadvertently recalled the horror of being dominated by all kinds of people during his school years.

After a long while, Yan Ge exhaled and said, "It's been a cold case for 20 years, and you, an office worker, solved it..."

"We all work in offices." Wu, a forensic doctor, corrected, "We all solved cases."

Yan Ge said, "Jiang Yuan solved this case today...it should be considered as yesterday's case, which is enough to brag about for a lifetime. Severe injuries, backlog, and famous...I guess there must be quite a few people in the bureau who still remember this case. Especially the leaders who were born and raised in our bureau, almost all of them were dispatched back then..."

"I just found a clue, and most of the work was done by other people in the team." Jiang Yuan made full use of the false modesty skills he learned in school.

Old Yan laughed and said casually, "Without the clues you found, other people would have nothing to do. They were all off work, but were called back to work overtime, and they didn't get overtime pay."

Jiang Yuan fell into silence, not knowing whether to be humble or pass the blame at this time.

"Bang bang!"

Liu Wenkai, the captain of the second squadron, put his head in the door and said with a smile: "Jiang Yuan is here. You worked hard yesterday."

"I don't have anything hard to do..." Jiang Yuan ate skewers and drank beer last night, but he really didn't feel hard at all.

Liu Wenkai's face was red, full of excitement after staying up late, and he said: "If you hadn't matched the fingerprints, this case would probably be dead. You are said to be the first in the storytelling!"

Jiang Yuan changed the topic: "What about the suspect? I mean, what kind of person is he?"

Jiang Yuan only confirmed the suspect's identity by comparing his fingerprints, but didn't know anything else. As a young man who had just joined the job, Jiang Yuan was still somewhat curious about criminal suspects and the like.

Liu Wenkai thought for a while and then said: "He is just an ordinary person. He is also unlucky. He had a pen pal in our county back then. After the college entrance examination was over, he ran over to see the pen pal as soon as possible. As a result, when he arrived at the agreed time and place, he was not there. After meeting my pen pal, I was in a bad mood after waiting for a day. I happened to meet the victim who was half drunk, and a few words led to a conflict. If the attack was serious, it would lead to bad results. "

"Where's the pen pal?"

"After this incident, he also knew that he had beaten people severely and never contacted his pen pal again." Liu Wenkai paused and then said: "His pen pal never wrote a letter again. But in his heart, he probably knew the reason. It’s all down to my not showing up.”

"So, except for the criminal suspect himself, no one knows that he has been to Ningtai County." Wu Jun concluded, and then sighed heavily: "He is unlucky, but he is also lucky."

"Ordinary people can't bear this kind of luck." Liu Wenkai said calmly: "When the person was stuffed into the car, he cried and collapsed, saying that he didn't dare to fall in love, get married, take out a loan to buy a house, and have to save money for his parents. money, and to avoid appearing on any social media...Ask us why we didn't come earlier..."

Yan Ge couldn't help sighing when he heard this: "When the case happened, this person just took the college entrance examination, and now he is about 40 years old. It has delayed everything."

Liu Wenkai pouted and said, "I just asked him a question and helped him stop crying."

Yan Ge asked cooperatively: "What are you talking about?"

Liu Wenkai said: "I asked him why he didn't surrender earlier."