Detective from The Future

The next morning.

City Public Security Bureau, Han Bin Office.

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

The person involved in the case is Bao Jiansheng, 45 years old this year, from the outskirts of Quancheng. He was suspected of participating in a robbery and murder case 14 years ago, but the chain of evidence has been insufficient and cannot be convicted.

Among them, a very important clue is a set of shoe prints found on the spot. The set of shoe prints 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. In order to facilitate identification, they were also enlarged and printed out wearing rubber-soled shoes. It was just that they could not find the exact same shoes for more than ten years, so they had to look for shoes with similar patterns. Printed.

The research started yesterday afternoon, and it has been studied until this morning. The comparison of the two sets of shoe prints is quite interesting. To increase accuracy, Han Bin also asked Zheng Kaixuan to take a few traces of wear on the soles of Bao Jiansheng’s old shoes.

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

Zheng Kaixuan's voice rang in the phone, "Binzi, is there any result?"

"Yes, I have finished studying."

Zheng Kaixuan asked, "Does the set of footprints at the crime scene match those of Bao Jiansheng a dozen years ago?"

"Not exactly."

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

Han Bin didn't answer the question, "Team Zheng, please answer me one question first. Is this Bao Jiansheng's right leg injured?"

Zheng Kaixuan hesitated, "Yes, he was indeed injured. As far as I know, he has broken his leg and underwent surgery."

"When did his leg hurt?"

"About five years ago."

Han Bin said sternly, "According to my research, the footprints of the crime scene 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 don't exactly match?"

Han Bin's conversation turned, "Although the footprints are not exactly the same, they are indeed the 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 the footprints are not static. With the change of age, physical condition, and mentality, human footprints also Will change.

The two sets of footprints are separated by a full 14 years. What happened in these years will affect and change a person, how can it be the same. "

Zheng Kaixuan asked, "If according to you, Bao Jiansheng's footprint has changed in the past fourteen years, then how do you know it is the same person's footprint."

"This is more complicated to talk about. Let me give a few simple examples. The first is the length of the foot. This basically does not change. Another change in the footprint is traceable, and it can be done from the body. Reflect it.

From the information you gave me, it can be seen that Bao Jiansheng’s weight now is about 180 kilograms, while his weight was only 120 kilograms a dozen years ago. His weight has increased by one-half, 60 kilograms. The weight of the flesh on the back of the body will change the walking posture, stride length, and gait.

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 footsteps of the footprints will move backward with age, these changes are traceable. Han Bin paused and continued.

"As long as these conditions for changing the footprints are reversed, you will find that Bao Jiansheng's footprints are basically the same as those of the crime scene."

Zheng Kaixuan understood what Han Bin meant. "With your remarks, I feel at ease in my heart, but you have helped me a lot."

"Team Zheng, this is only my personal experience analysis after all. You'd better ask the experts of the provincial government to help you identify them. Their words are much more useful than mine." Han Bin smiled.

Zheng Kaixuan smiled bitterly. He really wanted to ask the expert of the provincial government to issue a footprint appraisal, which could be used as evidence, but the expert Liu couldn’t tell. Ma didn’t know what to wait before he could be discharged. .

"The appraisal is okay later. I can wait for Mr. Ma to leave the hospital. The key is that your appraisal results made me feel at ease and clarified the direction of the next investigation. Otherwise, the police would go out and eventually get an oolong, and I didn't Fa explain it."

"Brother, if you want me to say that you have more than enough qualifications to get a provincial and departmental footprint appraisal expert with your ability, I will ask you to get an appraisal report from now on, so how much trouble would I have to save?"

Han Bin smiled, "Team Zheng, please don't praise me. It's so easy to get an expert's name. I'll still 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. The police system pays attention to establishment. People from an outside department want to get other departments. Where is the title of an expert in that easy, even if you are really capable? There are so many capable people, you have to cross that threshold to become your own person, otherwise everything will be useless.

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

To think about it another way, Han Bin is a squadron leader at such a young age. In a few years, his achievements will be even higher. If he solves a few well-known major and important cases, his proficient in footprint identification will spread like wildfire. Then it will not be his initiative. Asked for the title of expert of the provincial government, but the provincial technical department took the initiative to invite him.

The two chatted for a while, and Han Bin mentioned Bao Xing, "Team Zheng, I have a colleague named Bao Xing in the Municipal Bureau. He is a good guy and has been working under me. I was transferred to the provincial office a few days ago. In the Criminal Investigation Team, if you see it, help me take care of it."

"Bao Xing, yes, I took it down. When I see you later, I will talk to him." On the other side of Zheng Kaixuan's phone, someone seemed to call him, "Brother, I'm busy, let's talk back."

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

The reason why he mentioned Bao Xing was not a temporary motive. After all, Qindao went out, and the two people had a good relationship with Han Bin. One was Han Bin’s leader and the other was Han Bin’s subordinates. A good relationship is also good for Han Bin.

These two people are in the provincial government, maybe Han Bin will be able to use them in the future.

As for asking Zheng Kaixuan to take care of Bao Xing, it was just an excuse for matching the two. Bao Xing was transferred to the provincial government based on his father's relationship. His father's position is higher than Zheng Kaixuan's. Who will take care of him in the future will really say no. quasi.

After he was busy, Han Bin cleared the table and shredded all the documents on it. The Provincial Criminal Investigation Corps were all dealing with major cases. Han Bin didn't want these materials to be passed on from his hands.