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

Chapter 5
Yang Sen handed Liu Guodong a cigarette, then took the conversation: "Brother Liu is right, the deceased should have died of homicide, so I will be busy at night."

Bai Wenhai spread his arms, stretched his waist, and took the cigarette handed over by Yang Sen: "Xiao Lu, you just started working, and you don't have enough experience. The less things we find in this kind of murder scene, the more problems you have. bigger."

Bai Wenhai pointed to the evidence collection box in the carriage: "Look, we have been busy for a long time, and we only collected a dozen fingerprints in the living room where the deceased died, and there is only one kind of shoe print. I guess it should belong to the deceased's son. "

"He had entered the living room before reporting the crime in the morning, so he would naturally leave shoeprints. If the deceased committed suicide, at least we will collect the shoeprints of the deceased."

Bai Wenhai took a puff of cigarette: "But the scene was very clean, and we didn't find the shoe prints of the deceased, which means that someone should have wiped the marks on purpose."

Yang Sen sighed: "The other party is very careful, and wiped the traces very thoroughly..."

Lu Chuan quietly listened to the chatting of the three seniors. This was the best time for him to learn and accumulate experience.

In school, Lu Chuan learned technology, such as how to collect fingerprints and blood, but what these things represent is not what the school can teach.

This needs to be accumulated by Lu Chuan himself. For example, Bai Wenhai and Yang Sen, when they were doing site surveys, their methods were not professional, after all, they were monks halfway through.

But they can discover things other than technology, and they can basically confirm that the deceased did not commit suicide without even waiting for the autopsy report.

Back to the detachment, there is no hot meal in the cafeteria at any time. This is also part of the murder case mechanism. Usually, meals are served at a fixed time. When a murder case occurs, the logistics support personnel are actually no less leisurely than the frontline people.

In the words of Captain Qin Yong, the people on the front line are working hard, and they can't go back to the team without something to eat.

Three fifteen in the afternoon.

The four of Lu Chuan began to classify and identify the evidence collected at the scene, especially the comparison of fingerprints and the analysis of DNA samples, which were the key tasks.

Liu Guodong went to the case analysis meeting first. The three of Lu Chuan were not qualified to attend the meeting and could only work in the laboratory.

Although there are only four people in the current investigation office, the richest department in the entire criminal investigation detachment is the on-site investigation.

Nothing else, the equipment is expensive.

A DNA testing instrument can wipe out all other departments.

This thing is also the lifeblood of the current survey office. It was purchased last year. In the past, the criminal investigation detachment had to go to the technical appraisal department for DNA identification.

Yang Sen was in charge of operating the equipment, Bai Wenhai sorted out the evidence, and Lu Chuan was in charge of sorting out the photos and writing the survey report.

The survey report is one of the most important parts of the dossier, and writing a dossier is different from solving a case.

To solve a case, you can make logical reasoning, guess, and doubt.

The dossier is a statement of facts, recording everything on the scene in detail with photos, numbers, and text.

It was already 06:30 when Liu Guodong came back, thirteen hours had passed since the death of the deceased.

"Brother Liu, how is the meeting going?"

Liu Guodong's expression was a little deep: "I made a detailed report on the situation of the current survey, and from the analysis of the traces on the scene, I can confirm that it was homicide."

"But the autopsy hasn't been done yet, there's not much progress on the specifics."

call……

The nature of the case is determined, and everyone's heart is heavy.

"Okay, let's do our own thing and complete the site survey analysis report as soon as possible."

Solving a case does not rely on passion. Forensic doctors, on-site surveys, and investigators each do their own thing well and work together to advance the investigation of the case.

In meeting room No. [-], Qin Yong looked at the relationship diagram on the whiteboard with a gloomy expression.

The community where Zhang Wen's family lives is an old community with outdated facilities and the only few surveillance cameras are broken.

In addition, the community has no walls and is an open community, which brings great difficulties to the investigation.

The relationship between Zhang Wen and Zhang Wen has basically been sorted out. The divorced wife is not in the city, and the second wife and the child brought by the other party returned to their natal family in the next city the day before the incident.

The reporter was the son of Zhang Wen and his ex-wife. He originally took Zhang Wen to the hospital for a physical examination in the morning, but there was no answer when he called the door. He opened the door with the spare key under the floor mat, only to find that Zhang Wen was dead.

Neighbors can testify to this.

In addition, Zhang Wen's social background is simple and he has no enemies.

In the early hours of this morning, the surrounding neighbors did not hear any unusual sounds.

In addition, the murderer did not leave any traces at the crime scene, and the investigation of the case came to a dead end.

Qin Yong can only hope for the results of the autopsy to see if there are any valuable discoveries.

Surveying the office now.

Liu Guodong brought back meat-stuffed buns from the cafeteria: "Come on, take a break, the cafeteria makes buns tonight, stuffed with donkey meat, eat while it's hot."

The three of Lu Chuan put down their work and went to the desk: "Master, is there any progress in the case?"

Liu Guodong handed Lu Chuan three meat buns, and understood Lu Chuan's curiosity. He was more curious than Lu Chuan when he encountered the first murder case.

"The autopsy report has come out. The cause of death is that the heart was pierced by a sharp weapon, but the wound showed signs of repeated stabbing, which is consistent with our current survey conclusion. The homicide was a fake suicide scene."

The so-called repeated stabbing means that the knife is stabbed in, then pulled out, and then stabbed in again.

It is not to say that repeated stabbing is not possible for suicide. Generally speaking, if a person is determined to commit suicide, he may not feel pain in a short period of self-injury. Therefore, repeated stabbing may occur in order to die quickly.

But the knife in the heart is different from other parts. This kind of vital knife will cause the deceased to lose strength in an instant, and the possibility of repeated stabbing by himself is very small.

Lu Chuan nodded and did not continue to ask. There is a scope of work for the current survey. At this stage, their work has actually come to an end.

From the conversation between Yang Sen and Lao Bai, it can be heard that the two of them did not plan to work overtime at night. Yang Sen's child will take the college entrance examination next year, and he must go home to look after the child.

Lao Bai is 50 years old. After a busy day, his physical strength can't support him and he has been dozing off.

It is impossible for Lu Chuan and he is not qualified to ask the two seniors to work overtime.

But he still has systematic advanced tasks.

Although there will be no punishment if the task is not completed, the reward will definitely be gone.

Three times, five divisions and two eliminated three donkey meat stuffed buns, and Lu Chuan went to study the survey data again.

Liu Guodong took a look and didn't speak. When he first joined the police, he also had such a drive.

Young people are like this, just like people under a certain age don't understand what prostate rebellion is all about.

Who hasn't experienced the feat of Shichijiro.

Thanks to his basic field survey and photography skills, Lu Chuan sorted out the on-site photos in an orderly manner. When he turned on the computer, Lu Chuan started from the overview of the scene and did not miss any details.

The advanced task given by the system is: through on-site investigation, find clues to solve the case, and assist the special case team to solve the case.

This shows that there must be clues to solve the case at the scene, but Lu Chuan has not discovered it yet.

Clicking the mouse, Lu Chuan zoomed in on each photo, carefully watching the details.

Starting from the panoramic photos, to the close-ups of the corpses, the details of the blood stains, and even everything on the coffee table, and the trash can in the corner, Lu Chuan didn't let go of any of them.

But it is not an easy task to enlarge and view each of thousands of photos.

Liu Guodong and others naturally discovered Lu Chuan's behavior, but they didn't interrupt him.

They are old, and they are not from majors, so there is limited room for improvement. What they can teach Lu Chuan is the experience they have explored over the years.

Of course, it's not that they say they are not self-motivated, just like why the Queen Mother Zhao fell in love with Lai Ai back then. Good skills are one aspect, but the key is to keep up with physical strength.

The three of Liu Guodong obviously had enough energy to spare.

Lu Chuan, who has seen more than 400 photos, twisted his stiff cervical spine and grabbed the cigarette case next to the computer, but he couldn't find a cigarette.

After reacting, Lu Chuan looked at the clock on the wall, it was already past two o'clock in the morning.

No wonder a pack of cigarettes was wiped out. Lu Chuan has been watching for more than seven hours.

Lao Bai and Yang Sen had already gone home, but Liu Guodong didn't leave, he was lying on the office sofa and snoring.

Lu Chuan walked over to cover Liu Guodong with a blanket, grabbed the cigarette on the desk, and lit it.

Taking a deep breath, the strong smell of tobacco lifted Lu Chuan's spirit a little.

With a flick of the index finger, a little soot was shaken off.

Ok?
Looking at the cigarette butts in the ashtray that was almost full, a thunderbolt suddenly flashed in Lu Chuan's mind.

Cigarette butts?

After stubbing out the cigarette, Lu Chuan ran to the computer and quickly flipped through the photos of the scene with the electric mouse.

After a while, a photo appeared on the screen.

(End of this chapter)