Detective from the future

Chapter 911 Identification
the next morning.

Municipal Public Security Bureau, Han Bin's office.

There was a table of materials on the desk, all of which were sent by Zheng Kaixuan. Han Bin personally printed them into documents. Although they can be viewed on a computer, paper materials are more convenient for research.

The person involved in the case is Bao Jiansheng, 45 years old, from the suburbs of Quancheng. He was suspected of participating in a robbery and homicide case 14 years ago, but the chain of evidence has not been sufficient to convict him.

Among them, a very important clue is a set of shoe prints found at the scene, which has been printed out by Han Bin for careful study. This is a rubber-soled shoe, which is rare now, but it was very popular more than ten years ago. .

Bao Jiansheng's footprints were also collected by the police. For the convenience of identification, they were also enlarged and printed wearing rubber-soled shoes. However, after more than ten years, they could not find the exact same shoes, so they had to look for shoes with similar patterns. print.

The research started yesterday afternoon and continued until this morning. The comparison of these two sets of shoe prints is quite interesting. In order to increase the accuracy, Han Bin also asked Zheng Kaixuan to take a few photos of the wear marks on the soles of Bao Jiansheng's old shoes.

After ten o'clock in the morning, Han Bin finally got the result, picked up his mobile phone and called Zheng Kaixuan.

Zheng Kaixuan's voice sounded on the phone, "Binzi, is there any result?"

"Yes, I've done my research."

Zheng Kaixuan asked, "Do the footprints at the scene of the crime more than ten years ago match Bao Jiansheng's footprints?"

"Not exactly."

Zheng Kaixuan's tone was a little disappointed, "So we arrested the wrong person."

Han Bin didn't answer but instead asked, "Captain Zheng, please answer me a question first, did this Bao Jiansheng have a right leg injury?"

Zheng Kaixuan hesitated for a moment, "Yes, he was indeed injured. As far as I know, his leg was broken and he had surgery."

"When did he hurt his leg?"

"About five years ago."

Han Bin said seriously, "According to my research, the footprints at the scene of the crime 14 years ago should have been left by Bao Jiansheng."

Zheng Kaixuan was a little confused, "Didn't you just say that these two sets of footprints are not exactly the same?"

Han Bin changed the subject, "Although the footprints don't exactly match, they are indeed shoe prints left by the same person."

"Binzi, tell me in detail, what do you mean?"

Han Bin explained, "Footprint identification is different from evidence such as DNA and fingerprints. Human DNA and fingerprints will not change, but footprints are not static. With changes in age, physical condition, and mentality, human footprints also change. There will be changes.

There is a full 14 years between these two sets of footprints. What happened in these years will affect and change a person, so how can it be the same. "

Zheng Kaixuan asked, "If according to your statement, Bao Jiansheng's footprints have changed in the past 14 years, then how do you know that it is the same person's footprints."

"This is more complicated to say. Let me give you a few examples. The first is the length of the foot, which basically will not change. Another change in footprints can be traced, and it can also be traced from the human body. reflect.

From the information you gave me, it can be seen that Bao Jiansheng weighs about 180 jins now, while his weight was only 120 jins more than ten years ago, his weight has increased by half, and more than 60 jins of meat are carried on his body , walking posture, step distance, and gait will all change.

Moreover, his right leg was injured five years ago, which will also affect his walking posture, which also increases the difficulty of identification to a certain extent.

Coupled with the fact that the foothold of the footprint will move backward with age, these changes are traceable. "Han Bin paused, and continued,

"As long as these conditions for changing footprints are reversed, we will find that Bao Jiansheng's footprints basically match the characteristics of the footprints at the scene of the crime."

Zheng Kaixuan roughly understood Han Bin's meaning, "With your words, I feel at ease, and you have helped me a lot."

"Team Zheng, after all, this is just my personal experience analysis. You'd better ask the experts from the provincial department to help identify it. Their words are much more useful than mine." Han Bin laughed.

Zheng Kaixuan showed a wry smile. He really wanted to ask the experts from the provincial department to help issue a footprint appraisal, which could be used as evidence, but that expert Liu was not sure, and Mr. Ma didn't know when he would be discharged from the hospital, so he couldn't keep procrastinating. .

"I'll be fine if the appraisal is late. I can wait for Mr. Ma to be discharged from the hospital. The key is that your appraisal results make me feel at ease and clarify the direction of the next investigation. Otherwise, the police force will be spread out, and I will end up with an oolong. I can't explain it."

"Brother, if you want me to say that with your ability, you are more than enough qualified to be an expert in the province's footprint identification. In the future, brother, I will ask you to issue an identification report, so it will save a lot of trouble."

Han Bin smiled, "Captain Zheng, don't praise me. It's not so easy to get the title of an expert. I'll investigate my case steadily."

"You think clearly." Zheng Kaixuan thinks about it. Han Bin is a criminal policeman, and the footprint identification belongs to the technical department. The two are not the same department at all. How can it be so easy to get the title of expert, even if you are really capable?There are many capable people, you have to cross that threshold first and become your own, otherwise everything will be in vain.

Of course, this is not absolute. When a person stands high enough, the so-called threshold will become his stepping stone.

Thinking about it differently, Han Bin will be the squadron leader at such a young age. In a few years, his achievements will be even higher, and if he solves a few well-known major cases, his proficiency in footprint identification will spread like wildfire. It will not be him who took the initiative He asked for the title of expert from the provincial department, but the technical department of the provincial department took the initiative to invite him.

The two chatted for a while, and Han Bin mentioned Bao Xing, "Captain Zheng, I have a colleague named Bao Xing in the Municipal Bureau. In the Criminal Investigation Corps, if you see it, take care of it for me."

"Bao Xing, right? I wrote it down. When I see you later, I'll chat with him." Someone on the other end of Zheng Kaixuan's phone seemed to call him, "Brother, I'm busy, let's chat later."

"Okay." Han Bin responded, and then hung up the phone.

The reason why he mentioned Bao Xing was not a temporary idea. After all, Qindao went out, and both of them had a good relationship with Han Bin. One was Han Bin's leader and the other was Han Bin's subordinate. A good relationship is also good for Han Bin.

Both of them are in the provincial department, maybe Han Bin can use them in the future.

As for asking Zheng Kaixuan to take care of Bao Xing, it was just an excuse to connect the two of them. Bao Xing was transferred to the provincial department based on his father's relationship. allow.

After finishing his work, Han Bin tidied up the table and shredded all the documents on it. The Criminal Investigation Team of the Ministry of the Provincial Department is handling major cases, and Han Bin does not want these materials to be spread out of his hands.

(End of this chapter)