Police Detective

"We have all studied modern history from books. Many teachers here have also experienced some changes in the times. Let's take Tianhua City as an example. I will tell you a few things that most people have never heard of. It is not scary or magical. , even somewhat commonplace.

Our living standards are getting higher and higher, and the pressure seems to be getting higher. Did you know that thirty years ago, the suicide rate was several times what it is now? Let me first ask you, take hanging as an example. How do you think hanging is done? Bai Song asked.

No one expected Bai Song to ask such a question first, but many people still stood up and expressed their understanding.

Find a rafter, a rope, a table.

This is almost everyone’s understanding of hanging.

Bai Song turned on the projector in the lecture theater. Here was a sketch drawn by Wang Huadong.

The house has only four walls, no beams or ropes. This is a black and white sketch, which is a bit depressing. In the middle of the picture, a woman hangs between the cabinet and the kang head.

This may be the cabinet used by the woman when she got married, or it may be made later. It is the same height as the kang head, less than 80 centimeters high. The quality of the cabinet cannot be seen in the sketch.

There was only a ten centimeter gap between the cabinet and the head of the kang. The woman put her neck between the head of the kang and the cabinet. Her upper body was pressed against a chopstick. Her legs were half-kneeling, and she was hung by a chopstick. .

"This is a chopstick." Bai Song pointed to the horizontal stick that supported the woman: "It is also a tool for hanging."

This woman looked very thin, and her posture and movements made people feel inexplicably sad.

Even if you are going to die, there is no decent way to do it.

All the students and teachers were in an uproar, they had never seen this!

They only heard about using ropes, but they didn’t expect what the poor people would do if they couldn’t find the ropes or even the beams!

"I think I don't need to ask, everyone has different experiences." Bai Song said: "Most of us, like me, will eventually take up public security positions. In public security, we have been working as police officers for dozens of years. Years will naturally go through the changes of the times. What I am talking about happened when the old policeman around me was working. Maybe you think this kind of thing would happen hundreds of years ago, but in fact it was just a few decades ago. Let me show you again Look at this case.”

After speaking, Bai Song showed everyone a case of burning charcoal to commit suicide, which is also very representative today.

"Everyone may have heard of the term "Seeing the slightest hint of something." In future work, everyone will definitely make similar discoveries." Bai Song smiled slightly.

Some people nodded in understanding, while many others were still at a loss.

"Detective Bai, does what you are talking about count as a pattern?" A girl raised her hand and asked.

Bai Song thought for a moment: "It doesn't count. Manpower is sometimes exhausted, and it is impossible for any of us to figure out all the people in the jurisdiction. It is also impossible to understand the ins and outs of each case. Especially the police station, I believe that we My classmates are full of fighting spirit, but quite a few of them will flatten your fighting spirit at the police station.

Every day, they are trivial, and they are not even qualified to participate in major cases. Three or five years have passed by in a flash. This is a very real thing. By that time, when everyone is faced with buying a house, raising a family, and facing daily necessities, it will not be that simple. We are all of the same age, and I don’t want to preach to you. However, if my class today can make you think more before working, it will be very successful. "

After speaking, Bai Song clapped his hands: "The course has officially begun. I will teach criminal investigation today."

This is also the textbook recently compiled by Bai Song and others.

Writing textbooks is actually not that difficult to say. Recently, they have bought all similar books available on the market. None of them were written by front-line workers. There are a lot of theoretical things.

Of course, these big guys are not divorced from reality. Many contents, such as the use of special situations, are well explained, and Bai Song and others need to learn more.

The cases Bai Song talked about today were all cases he had solved, and they were cases that had been released from the confidentiality period.

For example, if you want to tell the story of Yao Xin's father-murder case in reverse order:

"The filial children celebrated their father's birthday, but the father was eating cake at home alone, which caused a B explosion. After the fire was put out at the scene, all evidence had disappeared. During the investigation, it triggered a huge conflict between the children, and the daughter killed her brother. What is this all about?"

When novels are written about cases, they are all written in reverse, with some strange and suspenseful beginnings. From the perspective of God, the most incomprehensible things about the case are first shown to attract readers, and then slowly decrypted.

Although this often feels "just that" when it comes to unraveling the mystery, it's really eye-catching.

Unfortunately, Bai Song and others did not handle the case from this perspective. They handle the case from a police perspective. They cannot proceed from the most suspenseful and interesting parts first, but can only advance one by one.

As a professional criminal police officer, Bai Song has a relatively good understanding of many cases. The leader of a case plays a vital role.

For example, when handling any case, the investigation is divided into two parts, the first is the basic department, and the second is the research and judgment department.

The basic part is very simple, which is what can be done in every case. For example, check surveillance, call and chat records, personal and physical evidence, on-site investigation, corpse identification, household water consumption, electricity consumption, purchase of unknown substances, car commuting, recent close contacts, and neighbors. Situation etc.

These are all things that need to be investigated. In the investigation of these basic issues in serious murder cases, no expense can be spared.

The second is research and judgment. Getting these things and turning them into clues of meaning and value is not as intuitive as in the book, and requires a certain grasp of human nature.

Bai Song originally thought that he could only speak for two hours, and the lesson plan he prepared was only two hours long. Unknowingly, he had already spoken at about four o'clock, and the students were fascinated by it.

Many people went to the toilet on the way, but still came back after using the toilet.

Although this was not his alma mater, Bai Song still unreservedly recounted all his experiences in the past few years. These people will be the mainstay of Tianhua City in the future.

"I'll stop here about the case. Modern investigative science is a broad and profound subject. In the past two days, my team members told you about on-site investigation, autopsy and computer applications. The three-day explanation will be enough Here, I hope it will be helpful to everyone." Bai Song bowed to everyone and ended the lecture.

Thunderous applause.