Warehouse survey.

Janssen found a yellow cardboard box in a corner and blew the dust that didn't exist on it, and the constant temperature and humidity of the warehouse was clean.

"Xiao Lu, this case has some origins, if you can find the suspect in this case, we will show a big face when we investigate now!"

Seeing the box that Yang Sen picked up, Liu Guodong and Lao Bai knew what this guy's idea was.

Liu Guodong nodded in agreement: "Lao Yang is right, you take a look at the file first." ”

Although Lu Chuan felt that the three of them were a little mysterious, it didn't matter to him, just after getting the footprint analysis skills, Lu Chuan had made a meritorious contribution in a small test, and now he was on the rise.

"Theft?"

Lu Chuan, who opened the file, was slightly stunned, how could there be a backlog of theft cases in the criminal investigation detachment?

There are not eight types of theft cases, and generally speaking, the police station below is responsible for investigation.

There is a process for handling cases, and what type of case is handled by whom.

Skipping the level or arrogating the case is not allowed.

Of course, there are some cases whose nature is not easy to determine, such as robbery and snatching.

As long as it is a robbery, regardless of whether it hurts people or not, no matter how large the amount is, the lower limit is three years, and if it is a bus, burglary or multiple robberies, it is more than ten years.

But in the case of snatching, it is generally capped at three years, and of course, the amount is too large or huge.

There is a demarcation here, whether there is violence or coercion in the process of committing the crime, if there is robbery, if not, then another matter.

For example, if the biker grabs a bag, without using violence and without hurting anyone, it is possible to locate and snatch.

In the case of ordinary theft, unless there are some cases with a particularly large amount of money, the impact is relatively bad, and the criminal investigation will come forward, and the small case is the matter of the police station.

And in this case, the amount involved is only more than 10,000 yuan, oh, and there are some gold jewelry, but it doesn't seem to be related to the huge amount.

"Brother Yang, the amount of money in this case doesn't seem to be too big, why is it in the detachment?"

The corners of Yang Sen's mouth drew an inexplicable arc: "Because this person who was stolen is more special." ”

"Special?"

Lu Chuan opened the file, and the person who was stolen was an old man in his sixties: "What kind of leader?" ”

Yang Sen shook his head: "You guess again." ”

Guess what the hell about that?

Liu Guodong took out the remaining information in the box: "Don't guess, the owner is Song Jiangguo's father-in-law." ”

Well?

"Who is Song Jiangguo?"

"Director ......"

Lu Chuan: "......"

The case was two years ago, and Lu Chuan was curious while reading the file: "Team Qin...... Isn't it miserable to be scolded? ”

"No, Song Ju is not such a stingy person."

Well?

"It's the car that the Qin team was in, it was originally going to be replaced with a new one, but it has been driving for ten years now......"

Oh.

Lu Chuan nodded, that's right.

The dossier is simple, the thief who stole is a repeat offender, the scene is clean and clean, and nothing is left except a string of footprints.

"We went to the scene that year, and the unlocking method was very professional, and we were definitely repeat offenders."

"The director's father-in-law's house was stolen, although it was not spread out, but it was also a sensation inside, and the habitual thieves in the entire Haizhou City were swept that week, but they were not found."

"The other party is likely to be a rogue case, and the old man of the Song Bureau lives in an old community, and there is no monitoring, so in the end, he can only let it go like this."

"Oh, by the way, the Song Bureau let go at that time, when will the case be solved, and when will the Qin team change the car."

"Ding!"

"Advanced mission: According to the footprints of the theft case, analyze the physical characteristics of the suspect, issue an internal investigation wanted, and assist in the arrest of the suspect."

It was still the desk in the morning, and Lu Chuan laid out all the footprint photos taken at the scene one by one and observed them carefully.

"Master, didn't you find the footprint analysis expert above to analyze the footprints back then?"

Liu Guodong shook his head with a wry smile, because of this incident, Liu Guodong and the three of them did not raise their heads for half a year: "The house of the head of the Haizhou City Public Security Bureau was stolen, how can we have the face to ask others for help, and the ugliness of the family should not be publicized." ”

This is also true, if you really have to find help from outsiders, Song Jiangguo will probably be able to split Qin Yong.

The footprints are very complete, and the suspect apparently did not put any effort into protecting the shoe prints.

Habitual thieves are like this, as long as they don't leave fingerprints, no one can find them, and if they do, they won't admit it.

Convicted by footprints, few thieves know this.

After some observation, Lu Chuan took the millimeter ruler and began to measure the data.

Compared with the measurement of fingerprints, the error requirement of footprint measurement is not so high.

Generally speaking, the millimeter level is sufficient for calculation and analysis.

But the measurement of fingerprints is not good, compared with footprints, fingerprints are smaller, and most of the measurements are measured with vernier calipers, and sometimes even laser measurement is required.

Of course, the latter is only used by expert-level fingerprint analysts, and the average person ...... You can't even use vernier calipers.

Yang Sen watched Lu Chuan start to measure, and rubbed his hands a little eagerly: "Xiao Lu...... Haha, can we see how you do that? ”

As soon as Yang Sen spoke, Lao Bai and Liu Guodong also turned their heads to look at him.

Footprint analysis is different from fingerprint analysis, and there are standard processes for learning fingerprint analysis, as well as mature methods and methods.

But footprint analysis is not good, everything written on paper is coarse and superficial, and the real unique skills are in the hands of a very small number of people.

For example, the footprint experts in a northern province they know are passed down from grandfather to son, son to daughter, and so on.

Therefore, Yang Sen wanted to learn and asked for Lu Chuan's consent.

"There's nothing you can't see about this."

Lu Chuan doesn't care, it's not a secret.

It's just that some things seem to be skill characteristics, compared to the calculation of data, the selection of some measurement points, is that intuition or experience.

As soon as Lu Chuan got started, he knew that point to choose.

"When I was in college, I had a little bit of experience in footprint analysis and spot surveying, and I could rely on my seniors to teach me everything else."

Lu Chuan told the truth, he has obtained these two skills now, and the others are really not good.

And whether it is Liu Guodong or Yang Sen Laobai, they take good care of Lu Chuan.

Yesterday, when I was on the spot, I didn't hesitate to teach some tips.

Comparing the heart to the heart, Lu Chuan has no reason to cherish himself.

As soon as Lu Chuan said this, the atmosphere eased a lot, and the faces of Yang Sen and the others were a little less embarrassed.

However, looking at it, the three of them frowned deeply.

"Xiao Lu...... Why did you choose these two points for measurement? ”

"Xiao Lu, is the ratio of these two data any use?"

A lot of things can't be learned by looking at them, it's like everyone knows that Teacher Jia's hand skills are a must, but so many people have seen it, and they haven't heard of anyone learning it.

Of course, on the one hand, there are technical reasons, and on the other hand, there is also a lack of experimental materials.

In addition, some people are born in dry land, and they cannot be compared with paddy fields.

Three people asked and one answered, and time passed quickly.

5:32 p.m.

Looking at the manuscript paper that had completed the calculation, Lu Chuan stretched his waist.

"It's finally done."

On the manuscript paper, the physical characteristics of the suspect have also been analyzed.