Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 15 Qin Yong Changes Cars
Office of the Captain.

"Yes, yes, Director Song, the person caught it, and everything is there... yes, send the lost property right away."

The leaders of several action teams stood outside Qin Yong's office and looked at each other.

"I was caught just as I was about to go out?"

"He is already in the detention room, and Wang Tao and the others are interrogating him."

"I've been handling the case for many years, and this is the first time I've encountered it. As soon as the case was reported over there, the case was closed here."

"What's this? I just heard from Lao Liu that the leader of the three arrested by Xiao Lu this time is the habitual thief who stole Song Bureau's father-in-law's house the year before last..."

The Haizhou Criminal Investigation Detachment has about 200 people in both internal and external work. If you say there are many people, there are not many people. If you say there are few people, there are only a few in charge.

The bosses of several departments all participated in the work in the past.

Either a classmate or a soldier who changed jobs during the same period, naturally there is no secret.

Qin Yong reported to Song Jiangguo in the office, and the story of solving the case spread outside.

"Little Lu is so lucky, there is really no one else."

"luck?"

"I can't see it. If they hadn't done a footprint analysis this afternoon, even if they arrested him, they might not be able to try the case he did the year before last."

Lu Chuan is considered a celebrity in the criminal investigation team.

In just one day, four cases were solved!

The key clue to Zhang Wen's murder case was discovered by Lu Chuan, and then he solved the backlog of robbery and wounding through footprint analysis in the morning.

As a result, the day did not pass, and on the way home from get off work, I caught a thief who was named by my superiors.

It even broke the long-standing case of the director's father-in-law being stolen.

"Qin team's [-]-year-old Cruiser can be replaced..."

"Ding!"

"Advanced task completed: The host analyzed the suspect's physical characteristics based on the footprints of the theft case, completed the internal co-investigation and arrest, and single-handedly arrested the suspect."

"System Reward: Intermediate Fingerprint Collection Skill Card."

"Does the host receive the reward?"

"receive!"

Whoa!
Streams of light flickered in Lu Chuan's mind, and the knowledge and experience of fingerprint extraction were deeply rooted in Lu Chuan's mind.

After accepting the reward from the system, Lu Chuan let out a long breath.

Finally came a skill related to fingerprints. Although it is only a fingerprint extraction skill card, it is not the fingerprint comparison analysis that Lu Chuan wants most, but it is not bad.

And this is the only intermediate skill card that Lu Chuan got.

Compared with footprint analysis, fingerprint analysis is widely used in case detection.

Although fingerprints are not like footprints, they can identify the suspect's height, weight and other physical characteristics, but they have more advantages in locking the suspect. .

Just like a human face, its unique comparison is more reliable and convenient than that of footprints.

There are two prerequisites for fingerprint comparison, one is that the murderer leaves fingerprints, and the other is that fingerprints are collected.

The collection of fingerprints is a basic skill for any criminal policeman.

Lu Chuan had studied it when he was in Public Security University.

But it doesn't mean that everyone has learned the same level.

Just like Wu Dalang and Ximen Qing, the types of parts are the same, but the techniques and methods are different, so the feelings they bring are naturally different.

The external manifestation is that a big man drinks medicine, and an official takes medicine.

The same is true for fingerprint collection. Everyone uses the same tools, and the focus is on technique, experience and meticulousness.

For the same fingerprint, if an ordinary police officer collects it, the comparison may not be successful, or even if the comparison is successful, it will consume more energy.

However, the same fingerprint collected by a senior surveyor may have better integrity and a higher success rate of comparison.

The fingerprint collection skill card awarded to Lu Chuan by the system contains all aspects of fingerprint collection.

Especially for fingerprint collection in some special environments, there are many techniques and methods that Lu Chuan had never heard of before.

The formation of fingerprints is related to the physiological structure of fingers.

Judicially speaking, fingerprints include finger belly lines, knuckle lines and palm lines.

But in real life, even in solving crimes, most of the fingerprints refer to the lines on the belly of the finger.

As for the structure of fingerprints, there are mastoids and ridges, which can be divided into bucket type, bow type and skip type according to the shape, and some special groups have specific fingerprints.

The composition of fingerprints is actually a chemical substance.

Unlike dogs, whose sweat glands are only on the tongue, the human body is covered with sweat glands.

The same is true on the fingers, and compared with other places, the sweat glands on the fingers are more developed and smaller.

In addition to sweat glands, there are many sebaceous glands. The substances secreted by these glands are the constituent substances left by fingerprints.

In layman's terms, fingers are like seals, glandular secretions are ink, and the place where fingers touch is equivalent to stamping, and it is a unique seal.

Collecting fingerprints is actually to make these chemical substances that are usually invisible to the naked eye active, and then take pictures with a camera.

Of course, when there was no camera in the past, it was necessary to use other special methods to save fingerprints, such as rubbing.

The fingerprint collection method rewarded by the system includes what Lu Chuan has learned.

Powder method, magnetic particle method and laser method, these methods are suitable for extracting fingerprints on the surface of non-absorbent materials.

On paper, leather, wood and other water-absorbing materials, chemical methods such as iodine fumigation and fluorescent reagents must be used.

In addition, there are some special cases of fingerprint collection.

There are many special methods in the intermediate fingerprint collection skill card for fingerprint collection under conditions such as fire, blisters, and long-term sun exposure.

These methods are the real essence, allowing Lu Chuan to collect fingerprints that others cannot.

After accepting the reward, regarding fingerprint collection, Lu Chuan is confident that at least he can secure the top spot in the Haizhou Criminal Investigation Detachment.

As for the whole province, he had never seen a master take fingerprints, so it was difficult to judge.

But in Haizhou Criminal Investigation Detachment, Liu Guodong is an expert in this field.

Compared with Liu Guodong's ability to collect fingerprints at the scene of Zhang Wen's murder case, Lu Chuan's intermediate fingerprint collection skills were much higher.

Qin Yong is announcing the good news, but Lu Chuan is fine.

After leaving the infirmary, he went straight home.

But because of an arm injury, he must not be able to ride a shared bicycle.

Fortunately, it was a work-related injury, and Qin Yong had already arranged for the detachment's vehicle to pick him up.

Well, the car used is his car, the ten-year Cruiser.

Chenguang Villa Area.

In the evening, there are many old people walking around in the district, greeting each other and chatting.

Then, I watched a Cruiser with a white license plate drive directly into the villa area, heading for the depths of the community.

"Who committed a crime, why are all the police cars here?"

"I see...how does the one sitting in the co-pilot look like Chuan Wazi?"

"Isn't Chuan Wazi working in the Public Security Bureau?"

(End of this chapter)