Although the investigation office does not keep files, all the evidence in the case is kept in the investigation.

Lu Chuan plans to try new skills is the backlog of cases left by the previous criminal investigation detachment.

Murder cases must be solved is the nationwide attitude towards homicide detection, but it does not mean that all homicide cases can really be solved.

For example, the series of murders in the woolen mill 28 years ago.

If it weren't for Lu Chuan getting the true eye of the system, who would have thought that the dignified five-star hotel manager would be a wanted criminal who has been wanted for twenty-eight years.

It's like not all children find their biological father.

Of course, Lu Chuan was not confident that a primary footprint analysis skill could solve a murder case.

On the one hand, it does not mean that all homicide scenes leave footprints.

On the other hand, as long as it is a homicide case, it will definitely go through many rounds of old case battles.

What can still be saved, the difficulty of detection is not ordinary.

Although Lu Chuan felt that his current knowledge of footprint analysis was definitely better than that of Liu Guodong, he was not confident that he could surpass those experts in the provincial department.

Lu Chuan knows that top footprint analysis experts can identify the other party's occupation, living habits, and even the shape of their legs just by shoe prints, such as looped legs, hunchback, and so on.

In addition, Lu Chuan didn't want to hit himself by himself, wouldn't it be nice to find an easy case to solve and experience a detective.

Soon, Lu Chuan found a target in the system, and a year ago, a robbery and wounding case occurred in Haizhou High-tech Zone.

The victim was stabbed in the arm and robbed of $820 in cash.

The other party was wearing a hood at the time, and it was the middle of the night, and the victim didn't even know whether the other party was a man or a woman, let alone see the other party's appearance clearly, so he didn't leave a portrait.

The other party did not leave fingerprints, and only a bunch of footprints were collected at the scene.

In fact, it stands to reason that this kind of "small" case cannot rise to the level of the criminal investigation detachment, after all, only 820 yuan was robbed, and the victim was not seriously injured.

However, robbery is one of the eight major serious cases, and no matter how big or small the amount is, it must be targeted by criminal investigators.

It's a pity that at that time, the criminal investigation detachment specially arranged a group of people to follow up, but there was no progress.

"Okay, it's you!"

The case is not big, but the nature is bad, and the information at the scene is only footprints, which is in line with Lu Chuan's goal.

This thing is like a thief stepping on a point, when you don't know what the person in the boudoir looks like, you have to determine the target through other channels.

Wealthy mansions have special nursing homes, the risk is too great, and it is difficult for small households to have any beauty, and the homes of ordinary people are just right, at most there are a few watchdogs, and a few buns can be done.

There is a special evidence storage warehouse in the current survey, so don't look at the current survey, there are only four people, and the treatment is good.

Lao Liu is a proper deputy department treatment, and the status of Yang Sen and Lao Bai is not low.

In addition to the special car (on-site survey professional car), there is also a special laboratory, no, there is a special warehouse under the building.

I heard Liu Guodong say that the detachment spent a lot of money to renovate three years ago, and now the warehouse is constant temperature and humidity.

The reason is also a little strange, many years ago, the detachment handled a strong alkali homicide case, the murderer was very awesome, he wore a condom when he committed the crime, and threw it in a nearby trash can after the crime.

It was following this clue that the suspect was locked.

The suspect was eventually sentenced to death, but death penalty cases are subject to regular review.

As a result, when this key physical evidence was found, the sleeve was almost corroded because the warehouse was too wet.

You must know that the case back then was handled by the current deputy director, and if something went wrong, you would have to walk around without eating.

So with a stroke of the pen, the funds for the renovation of the current physical evidence warehouse came down.

A week ago, Liu Guodong once brought Lu Chuan to the warehouse and introduced him to each area.

In Liu Guodong's view, when he retires in the future, he must be succeeded by young people like Lu Chuan, and the family background will have to be handed over to the young people sooner or later, so there is no need to hide it.

When the young people grow up, the old people can also be more relaxed.

It's just that this time the Qin team gave Lu Chuan a holiday, and a few of them had to work......

All information is stored by age and is divided into categories, with a total of five boxes for robbery cases.

Coming to the backlog area, Lu Chuan successfully found the physical evidence of last year's robbery.

Picking up the evidence box, Lu Chuan started the comparison directly in front of the desk in the warehouse.

Everyone above was busy with the closing report of Zhang Wen's father and son, and Lu Chuan went up, but it was not to help, and it was not to help.

I just experimented with new skills in the warehouse.

Anyway, the constant temperature and humidity in the warehouse, as well as the fresh air system, are much better than the smoky miasma environment above.

Unlike the fingerprint comparison system, there is no automatic comparison system for footprints.

Strictly speaking, it is not nothing, some criminal investigation detachments have their own footprint identification experts, and they have their own systems, but the Haizhou City Criminal Investigation Detachment obviously does not.

Spreading out the photos, Lu Chuan began to measure the data of the footprints in detail, it had just rained on the day of the crime scene, and the footprints left by the suspect were very clear.

The footprints are very obvious in terms of imaginary edges, weight, stride length, pressure, and other marks.

When the case was solved last year, the Haizhou City Criminal Investigation Detachment also invited experts in this area to do an analysis, but it was the criminal police of the next city.

is much stronger than Liu Guodong, but compared with real experts, it is not half a star worse.

So at that time, some basic judgments were made, males, between 1.7 and 1.8 meters tall.

Other details are scarce.

As for finding experts from the criminal investigation detachment of the provincial capital city or even the provincial department, Qin Yong gave up.

Although it is a robbery and wounding case, after all, the amount is too small, and the person is not even slightly injured, if he really wants to hand over the case, Qin Yong is not ashamed to say it, and the file is easy to be thrown out.

"Ding"

"The basic task is to use footprints to analyze the physical characteristics of the suspect in the robbery and wounding case."

Although it is only a basic task, there is no reward for completing it, but you can familiarize yourself with the skills, and Lu Chuan continued to observe.

"Insufficient force on the imaginary edge...... ...... center of gravity back"

Lu Chuan had already entered the state at this moment, and several sets of footprints were put together and began to compare.

The calculator on your phone also opens and starts to calculate the measurement data.

"That's not right......"

Half an hour later, Lu Chuan frowned when he took all the measurements and calculation data.

There is no doubt that he is in trouble.

Sure enough, none of them are simple to become a backlog.

At no time, in any place, do not treat the police as idle eaters.

Although this robbery case is not big, it is one of the eight types of serious cases after all, and in this kind of case, the bureau has an index assessment for the criminal investigation detachment.

Even, this is one of the important assessment indicators of the provincial department to the municipal bureaus.

Therefore, the people who handled the case last year must have done their best.

The reason why Lu Chuan frowned was not because he had doubts about the skills rewarded by the system.

Rather, his calculations are very different from the characteristics of the suspects locked at the time of last year's crime.

Even subversive.

Because according to his calculations, the owner of this shoe print should be a woman!