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

"Zhou Yang...he was naughty when he was young, and he grew up with his grandma. We usually have too many things to do at school, so we don't have time to take care of him."

"Later, he was in my class when he was in elementary school, but he didn't like studying."

"It was alright in elementary school. I watched him. He just didn't study well, but he went to junior high school..."

From the information provided by Zhou Yang's father, it can be judged that Zhou Yang is actually a spoiled child.

Both parents are teachers. When they first started working, they had a fixed salary and their family conditions were relatively good.

However, the children of the teacher's family do not necessarily study well.

Back then, Zhang Hui had a classmate whose mother was a teacher. That classmate was not good at studying, and because his mother was a teacher, he could be said to be a bully in school.

Zhou Yang was in the same situation. He didn't study hard back then, and it was even more so after he entered junior high school. It was common for him to skip classes and go to Internet cafes.

When I took the senior high school entrance examination that year, I was not admitted to the local high school, so I had to go to a vocational high school.

"I didn't learn anything real in the vocational high school. On the contrary, I made a lot of friends. Later..."

Zhou's father sighed uncomfortably: "We can't control it anymore, we give him some money every month, this house...he didn't tell us the exact location, and it's our first time here today."

Zhou Yang's father didn't know much about Zhou Yang.

In their impression, Zhou Yang seemed to be a good boy in elementary school.

"Does Zhou Yang have any particularly good friends, or girlfriends, do you have any?"

"Girlfriend...we don't know, he only calls his mother every month when he asks for money."

"As for my friend, he has a boy named Wang Zhi who went to the vocational high school with him."

"Is there a contact number?"

"We don't have any, but we know Wang Zhi's parents and we have their contact numbers."

……

rooftop.

Under the growing sun, Lu Chuan and Liu Guodong basically swept the entire rooftop.

More than three dozen evidence bags were collected.

"Master, it's almost time. I'll go back and do evidence analysis."

It's been a long time since Liu Guodong has worked outdoors continuously for such a long time, and his old waist can't stand it.

"I knew it earlier, let Lao Yang and the others come over."

In fact, the work intensity of current surveys in the past was not as great as it is now.

For a scene like the rooftop, it probably took an hour or two to finish it in the past.

It's even hard to say whether the string of drag marks that were wiped out can be found.

The joining of Lu Chuan can be said to have raised the technical level of the Haizhou Criminal Investigation Detachment to more than one level.

Lao Yang and Lao Bai were not idle in the detachment, and they did enough preparations for the analysis of trace physical evidence.

Since the establishment of the trace evidence laboratory, when Lu Chuan was free, he taught Liu Guodong and the other three how to operate the equipment.

After a period of familiar practice, Lao Yang and Lao Bai have been able to proficiently analyze trace physical evidence.

Of course, this is only on the technical level, and the focus of trace evidence analysis is still to be analyzed in conjunction with the scene.

"Brother Yang, you guys do trace evidence analysis first, and I'll go up and do footprint and fingerprint identification."

"Okay, don't worry here, the result will be ready in two or three hours."

Lu Chuan's workload is still the biggest.

Footprint identification analysis, as well as fingerprint identification analysis.

Seven fingerprints were collected on the aluminum alloy door, but none were found on the roof.

This is not good news.

If the murderer didn't wear gloves when committing the crime, then there should be fingerprints not only on the door, but also on the roof.

However, now there are only fingerprints on the door, so it is very likely that these fingerprints were left by other people who went to the rooftop.

The specific situation is still uncertain, depending on the identification and analysis results.

If there are unfamiliar fingerprints, it may be necessary to collect fingerprints for all residents in the apartment.

Lu Chuan started with fingerprint identification and analysis first.

In any case, fingerprint identification comparison is a clue that can draw conclusions relatively quickly.

Fingerprints on aluminum alloy doors are mostly collected from the door handle.

Due to the irregular shape of the handle, the degree of compression of the fingerprint is relatively large, and it is not easy to deal with it.

Fortunately, Lu Chuan has advanced fingerprint identification and analysis skills, so it will take a little more time to process, and there will never be any uncertainties.

In fact, this is also the biggest advantage of Haizhou Criminal Investigation Detachment now.

If a murder case is found in other places, even if fingerprints are collected, the identification may not be successful.

For example, the fingerprints collected on this kind of doorknob, it can be said that most of them failed to be identified.

Soon, all seven fingerprints were identified.

But the result is not so good.

With seven fingerprints, a total of three people were selected.

Two of them were women in their 50s who were supposed to be the cleaning staff of the apartment.

The other person is 23 years old, and the information displayed by the system is a member of a security company.

In this case, it is likely to be fingerprints left during the security inspection.

But Lu Chuan was not careless, and the information of the three personnel was immediately sent to the two action teams on the front line of investigation.

"Brother Sun, there are three people in total. Check over there to see if there is any problem."

"Okay, don't worry, I'm going to check now."

After hanging up the phone, Lu Chuan concentrated all his energy on the identification and analysis of the footprints.

Judging from the situation at the scene, these footprints are regularly distributed around the drag marks wiped off by the murderer.

The footprints and shoe prints have the same texture and the same size, so it is certain that they were left by the murderer.

Lu Chuan has great hopes for these footprints.

"Little Lu, what's the matter?"

Liu Guodong came up from the basement and happened to see Lu Chuan measuring the footprint data.

The work below is coming to an end. Most of the trace evidence has been chemically processed and has been loaded into instruments.

Lao Yang and Lao Bai watched from below, and it is estimated that the result will be available in half an hour.

"The fingerprint identification is over. I have sent the results of the seven fingerprints to Group Leader Sun and the others for verification, but..."

Lu Chuan pointed to the rubbing shoe print model.

"Two of the owners of the fingerprints are women in their 50s, and one is a 23-year-old youth."

"However, based on a preliminary look at the shoe prints, the owner is a male with a height of about 1.7 meters five, but he is relatively old, and should be over 30 years old."

"That basically ruled out the possibility of the fingerprint owner committing the crime?"

"It's about the same, and the footprint identification is about the same. It will be ready in half an hour."

Ten minutes later, Qin Yong received the footprint identification and analysis report from Lu Chuan on his mobile phone.

"Male, with a height of 1.7 meters 1.7 to 34 meters 38, a weight of about [-] kilograms, and an age between [-] and [-] years old."

"The walking pattern is slightly out of character, the left foot has specific characteristics, and the little finger is missing!" (End of this chapter)