civil forensic

Back on Bar Street again, the shops around the "Utopia Craft Beer Hall" have reopened.

The afternoon is not the normal business hours of the bar, but today, the bar next to the "Utopia Craft Beer Hall", which is blocked by the warning tape, is full of people coming and going, and it is very lively.

There are few new things in the small county, and an occasional murder case in a bar arouses the interest of trendy men and women.

After all, this is an internet celebrity event that can be compared to the beauty of a big city mother.No matter how many new things you have in your big city, show me the two of you dead in a public place!no, right?No, everyone is tied today.

Mu Zhiyang waved annoyedly, and drove away a few people who were sticking to the cordon to take selfies: "This is not a good thing, stand farther away."

"Officer, we are recording." A young man's cell phone camera has already turned on him.

Mu Zhiyang frowned slightly. Before he could speak, Tang Jia, who came with him, had already stood in front and said sharply: "You can take pictures, but you are not allowed to enter the cordon or touch the cordon. In addition, you can Upload the video, but it must be uploaded in its entirety, you can’t cut off the beginning and the end, just intercept a part of it. If you take it out of context, colleagues from the Internet Security Brigade will contact you.”

Tang Jia worked in Changyang City, and specialized in crowd management. Her speech was not fast, but she was full of majesty. In addition, she grew up so fast that she quickly divided the young people in front of her.

"Let's take a photo together. Some young people have already posted it up.

"Don't get close to the warning belt, and I won't take a photo with you." Tang Jia pushed away the boy who came up without hesitation.

The police's group control does not mean that they should give up the use of violence.On the contrary, the traditional function of the police is based on violence. "Using violence to control violence" is not the only option for the police, but it must be one of them.

Jiang Yuan glanced back and saw that most people were just holding up their mobile phones to take pictures. Tang Jia also had experience, so he bent down and entered the security zone, and then entered the "Utopia Craft Beer Hall."

In the second on-site survey, there was no need to lay the bridge. Jiang Yuan led people directly and began to observe the various entrances and exits.

It is impossible for the murderer to disappear out of thin air. He never appeared under the camera, which only shows that he did not take an unusual path. Back on track.

Moreover, as Jiang Yuan said in the conference room, the murderer would only leave more traces and provide more information by doing so.

From the perspective of traces, the normal way of entering and exiting the gate is the way to leave the least traces.

This is because the murderer is not the only one who enters and exits the gate, and every subsequent entry and exit is a damage to the scene, which is the most troublesome thing in crime scene investigation.

On the contrary, it is the trace of not taking the usual path, the trace left behind is simple, but has a better utilization rate.

The only question is where to stay.

Jiang Yuan was not in a hurry, he took a careful look at all the doors and windows that could go in and out, and if he couldn't see clearly with the naked eye, he used a horseshoe mirror to see if he couldn't be sure.

If the murderer wanted to escape, it would be impossible to spend too much time covering up the traces. Even if it was spent, Jiang Yuan's approach would not be able to cover up.

In this era when staying rooted is equivalent to filming a novel, very few murderers can leave no trace.Especially indoors, it is so difficult that it requires not only professional knowledge, but also long-term practice.

The murderer in front of him was already skilled, but in front of LV4's crime scene investigation, under Jiang Yuan's two-hour meticulous investigation, Xingzang was easily exposed.

"This window was closed from the outside, using a little trick." When Jiang Yuan checked the window of the toilet on the second floor, he found many traces easily.

This level of concealment is just to fool the 1V1 level trace inspection, but if there is a half-step LV2 trace inspection, if you are a little more serious, you can make a similar judgment.

It is too difficult to leave no traces, especially if you want to use extremely short criminal incidents to counter the long-term search of trace investigators, the difficulty is doubled.

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The policeman from the police station who came with me looked at the location and said, "This is the second floor, and below is the back alley of the bar, but there are cameras in the back alley."

"Pull up a chair."

Jiang Yuan asked for a chair, stood on it, pushed open the window, and looked at it carefully without touching anything with his body.

"There are footprints on the air conditioner, and there is a protruding part of the wall more than ten centimeters wide. There are also footprints, which should have been left in the past few days. Well, transfer the car over." Jiang Yuan didn't even stand out, so he took a few pictures with his mobile phone photo, and proceed to inspect the other windows and doors.

After all the doors and windows were checked, a lift truck borrowed from nowhere also drove into the back alley of the bar.

Jiang Yuan climbed onto the lift truck again, took pictures and took samples again.

The outer edge of the bar building is densely covered with dust, and the extracted footprints are extremely clear. Jiang Yuan used the footprints to analyze for a while, and he felt that he could directly draw the back of this person.

Although it is possible that this series of footprints was left by a wandering wild mandarin duck, since there are no corresponding traces on other doors and windows, this series of footprints is very suspicious.

"The sample is about 176 cm tall, weighs 70 to 75 kg, and is about 35 years old. There should be traces of exercise, and the body fat percentage is low. It is likely to be similar to the victim's body fat percentage. It is similar to the figure of an athlete. The balance of the body is also very good. Yes, I wear a size 43 sneaker and have a low arch, so I’m not a professional athlete.”

Jiang Yuan read out the footprints in minutes.

Mu Zhiyang hurriedly took out his notebook to record.

"Go this way. Jiang Yuan pointed in the direction of the footprints, and then walked this way.

The footprints extended forward to six buildings, which meant that the murderer had always used the height of the second floor as a platform, and walked hundreds of meters from the height of the second floor.

In Jiang Yuan's mind, he immediately remembered a certain parkour master he had met.

However, this person should not be learning parkour, because there are basically not many handprints left along the way, and he basically relies on his impressive balance to maintain his progress.

As a result, Jiang Yuan got a lot of gait information.

The more you cover, the more you expose.From the clear footprints he saw now, Jiang Yuan felt that he could recognize the person directly when he saw the back of the other person walking.

The footprints ended at the entrance of an alley, Jiang Yuan looked around, and quickly locked his eyes on the signboard of a 24-hour hot pot restaurant.

"Ask them if there were any customers in the store at three or four o'clock last night. Jiang Yuan walked around the hot pot restaurant again while talking, and then clicked on a few cameras in the distance to ask people to check the surveillance in the morning.

After finishing this circle of work, Tang Jia, who went to the hotpot restaurant to ask questions, had already called back, "Team Jiang, I found something!"

A group of policemen rushed into the elevator, filling the car to the brim.

Hot pot restaurant.

Tang Jia is helping the clerk remove the hard drive.

Seeing Jiang Yuan and others coming in, Tang Jia showed Jiang Yuan the reprinted photos on his mobile phone, and reported: "At 3:50 last night, this person walked into the store alone, and left after 6:[-] after eating hot pot."

The man in the photo, dressed in black, has a height and body shape that fit Jiang Yuan's judgment just now.

"It's pretty smart." Jiang Yuan dismissed his words, don't look at it, it's more than 2 hours away, if you don't find this hot pot restaurant, you may not be able to find anyone if you blind the surveillance.

However, this person already has a special ability. If you are an ordinary person, not to mention how difficult and dangerous it is to do Jackie Chan like walking along the outer edge of the building. Judge where there is a camera and where there is no camera, and then plan out It is very exhausting to come out of a route.

"Ask Zhuang Wei to update the time and see if he can find his means of transportation. Records will be made for all the shop assistants, and those who are not at work, including those who are on leave, will also be recorded. Those who have resigned in the past few days will also be recorded." Jiang Yuan thought for a while and made arrangements.

This case must have been checked in advance, but the murderer is not a local, and it is still unclear how he made the decision.

If it is a small case, the case can be almost closed if the criminal is found, but the murder case cannot be closed.

Yes, all the clerks in the hot pot restaurant have to check it.

After Jiang Yuan finished speaking, he took out his mobile phone, called Huang Qiangmin, and asked him to ask the technical detective to come out and check the mobile phone.As an uncle, the technical investigators basically operate in a black-box manner. The criminal police make a request, and the technical investigators output a result.

Huang Qiangmin naturally responded immediately, and then said, "If it is a very professional killer, then it is possible that he paid for the murder?"

"It's possible." Jiang Yuan also imagined the murderer's crime process, and said slowly, "The person who can safely eat hot pot at the crime scene must have more than one case in his hands. It's a pity that the clerk has already cleaned up the tables and chopsticks. , the identity of the murderer has not yet been determined.”

"It's already very good, well, you should pay attention to your own safety. To avoid the situation where the murderer returns to the crime scene again, you must have at least two people around you." Huang Qiangmin reminded a few words, and then said: "The case can do this. The level is already a breakthrough, so don’t worry too much.”

Huang Qiangmin started to care about Jiang Yuan's body instead.

When farming is busy, we must spare no effort in animal power. When farming is off, we must naturally take good care of the large animals at home.

There are many things in Jiang Yuan's mind. To be honest, he has done so many cases and traveled to many provinces and cities. It is the first time he has seen a professional killer or a murder case.

This made Jiang Yuan become interested in both the murderer and the victim.

"By the way, go through the trash in the hot pot restaurant and the trash in the building to see if you can find the murder weapon." Before leaving, Jiang Yuan added another sentence to Tang Jiafeng.

Tang Jia, who had been busy for a day, thought that the garbage in such a large hot pot restaurant, including kitchen waste, and the garbage of the entire building, was not good. She couldn't help but took out her mobile phone and looked at her face. Full of doubts: Is it because I didn't make up properly today, so I have to go through the trash?I should have known...