1995, Starting as a Criminal Investigation Expert

The dormitory is not far from the Municipal Bureau.

After finishing his meal, Li Shu, feeling restless, rode his bicycle back to the municipal bureau.

Firstly, it was thought that Zhao Yong might need help after completing the on-site investigation.

Secondly, Li Shu wanted to see the suspect.

The suspect went to great lengths, sawing off the victim's head and stripping him of his clothes, in an attempt to conceal the victim's identity and interfere with the investigation.

They managed to extract the fingerprints themselves and identify the suspect.

To see things through to the end, Li Shu wanted to see what kind of person could dispose of a corpse so cruelly.

Another point.

Li Shu has already reviewed the fingerprint identification data from the system over this long period of time.

The rest is about in-depth study and thorough understanding of the knowledge involved.

To understand this more thoroughly, you need to look at real-world examples.

Under this premise, Li Shu also took the time to look at other information.

We're pursuing multiple initiatives simultaneously.

In addition to the six basic categories of criminal science and technology, the system also allows users to enhance their talents through talent points.

Conversely, the system also provides some research data based on these capabilities.

For example, this ability to express oneself through painting.

Character simulation is a commonly used technique in criminal investigation, but it cannot be simply categorized into six major categories; it leans more towards the concept of criminal investigation.

Similarly, interrogation techniques lead to criminal psychology and even the study of micro-expressions.

The same applies to the senses of smell and hearing.

Li Shu considered that the system's purpose was to make him a criminal investigation expert, so it was normal for him to study some knowledge of criminal investigation.

Among these, Li Shu showed particular interest in certain topics.

For example, criminal psychology.

By interrogating, interviewing, and observing the suspect's behavioral logic, we can analyze the suspect's behavior from a criminal psychology perspective when encountering similar cases in the future, thus assisting in solving the case.

Tan Guoxiong followed along.

When they arrived at the bureau, Zhao Yong and his team had just returned.

The head was brought back, wrapped in a plastic bag, and Li Sheng took it to the forensic doctor immediately.

Respect for the dead is paramount; Li Shu had little interest in the corpse and was more concerned with the on-site investigation.

I asked around and found there weren't many.

After all, more than two months had passed, giving the suspects ample time to clean up the scene.

For example, it was speculated that Peng Youjie dismembered the body in the bathroom, but no blood of the victim was found in the bathroom.

The weapon was uncertain, but they brought back a bunch of wrenches, hammers, and other tools.

The victim's clothing and personal belongings were also not found.

But it's not a big problem; their heads are the irrefutable proof.

Moreover, due to the freezing process, the wound marks were perfectly preserved, and comparing them with various tools was sufficient to identify the murder weapon.

"Everyone, go home. We'll do it tomorrow."

We've caught everyone, so there's no rush to move on.

Li Shu didn't leave; instead, he went to the interrogation room.

We've just finished one round of interrogation; it's halftime.

Judge Xiao Rui was the presiding judge.

When Li Shu arrived, Xiao Rui and Lin Wanping were smoking together, discussing how to proceed with the interrogation.

Upon seeing Li Shu, Lin Wanping immediately punched him in the chest and said with a smile, "I told you, you're a lucky charm. Look, you matched the fingerprints this morning and arrested the suspect this afternoon."

Xiao Rui chuckled and said, "Fingerprints, the king of evidence, that's a big deal."

"Whoa!"

Lin Wanping chuckled and teased, "Old Xiao, I seem to remember someone saying before that fingerprint comparison is all nonsense, how come everyone's calling it the king of evidence now?"

In the past, when Xiao Rui was handling cases, he relied more on his own two legs, believing that as long as he ran around and made more visits, he would definitely be able to solve the case.

Xiao Rui pretended to kick Lin Wanping, then awkwardly explained, "That was before, it's not the same now."

It wasn't that he was gossiping behind people's backs; it was just that Han Jianjun and his team had limited expertise in fingerprint comparison.

In previous years, solving cases relied more on extensive investigations and visits.

But things are different now, because we have Li Shu.

"You know Director Liu from Yanling, right? He's a master, an expert, and everyone praises our Li Shu for being so capable." Xiao Rui had heard Xu Qiang say all this.

Influenced by his father, Li Shu was still instinctively modest, saying it wasn't that exaggerated.

He said not to praise themselves too much, because if they encounter a case later and the information doesn't match, wouldn't that disappoint both of them?

"By the way, Captain Xiao, could I observe the interrogation?" Li Shu asked.

Even through a door, you can't make heads or tails of it.

Xiao Rui was taken aback for a moment, then said, "What, you want to be a criminal investigator?"

Xu Qiang had mentioned this matter during a casual conversation before.

Li Shu shook his head and explained that he had been reading some books on criminal psychology and wanted to do some research by observing suspects.

"What kind of mentality could a criminal have?" Lin Wanping exclaimed.

In his view, a criminal is a criminal, born bad.

Li Shudao said, "Captain Lin, this stuff is still useful. For example, we can use it to study why a suspect is a bad guy."

Lin Wanping said he didn't understand and was about to ask for details when Xiao Rui stopped him.

"Okay, you can watch if you want, just don't say anything."

Xiao Rui didn't care.

The interrogation room was small.

Peng Youjie was handcuffed and crouched awkwardly on the ground.

My legs went numb after squatting for a long time, and switching legs back and forth didn't help. My calves were trembling slightly.

When Xiao Rui and the others entered, they instinctively trembled and looked at everyone in fear.

Xiao Rui slammed his hand on the table and shouted, "Peng Youjie, have you thought this through? Did Zhao Ziqin's clothes get burned or buried?"

Despite the overwhelming evidence, Peng Youjie still clung to a sliver of hope.

He said that after he hit her on the head, Zhao Ziqin was still alive. He was scared, so he covered her mouth to stop her from talking, and accidentally suffocated her.

Regarding personal belongings, they would say one minute that they were lost, and the next that they were burned.

There are various contradictions.

In Xiao Rui's view, that was dishonesty.

Li Shu leaned against the corner of the wall, spread out a small notebook, and while recording his observations of the store, he also sketched and drew quick sketches of Peng Youjie.

The system has a portrait simulation skill; drawing occasionally can also earn you some experience.

Unlike Cheng Jianrong, who was arrogant, fierce, and always clamoring to fight the police one-on-one, Peng Youjie was more like an ordinary person in terms of temperament.

He's not tall, has slumped shoulders, and looks downcast; he seems like a rather timid person in real life.

He even cries if you scare him.

Li Shu tried to analyze the information he had read.

In fact, criminal investigation courses in schools sometimes include knowledge about criminal psychology as extracurricular material.

After all, this discipline has been developing in the country for many years.

Especially in the early 1980s, the national security situation was poor, which led to the first severe crackdown.

At that time, due to demand, some people began to formally study criminal psychology.

For example, Luo Dahua.

Starting in 83, he went deep into the front lines and prisons, interviewed a large number of prisoners, and wrote textbooks on criminal psychology, becoming a pioneer in related research in China.

According to Li Shu's analysis, Peng Youjie was more like an honest man who had been pushed to the limit.

But as the interrogation progressed, and as Li Shu took notes, he felt it didn't seem right.

Zhao Ziqin's sarcasm wasn't enough to push someone to the point of wanting to saw their head off.

The entire crime was extremely cold-blooded and violent.

Judging from Peng Youjie's change in attitude, Li Shu vaguely felt that this guy was more like someone who had been suppressing his emotions for too long and had a strong urge to destroy everything.

The key is sex.

His lack of sexual ability led to his cowardice and insecurity, and the long-term repression eventually erupted.

Li Shu closed his notebook, a conclusion already forming in his mind.

That means even if Peng Youjie didn't kill anyone this time, given his current lifestyle, he would eventually commit a crime again.

He confessed that he spent most of his salary on prostitution.

It was precisely because he was incapable that he kept trying to prove himself, which ultimately led to this tragedy.

After signing and affixing his fingerprint, Peng Youjie was taken away.

Lin Wanping asked, "Li Shu, have you figured anything out?"

Li Shu shook his head.

After analyzing it, I felt that this aspect was somewhat like putting the cart before the horse.

It is by analyzing the consequences of crimes to deduce what kind of personality Peng Youjie has, and thus conclude that he would definitely commit crimes.

That's not necessarily true.

Therefore, Li Shu felt that either the subject was not as impressive as he had imagined, or he had not studied it thoroughly enough.

Lin Wanping beckoned Li Shu out and laughed, "Alright, analysis is useless. Just like I said, he's a born bad seed."

Xiao Rui caught up and asked, "Li Shu, I heard from Branch Manager Xu that the bureau wants you to handle an old case. Which case are you going to handle?"

When asked about this, Li Shu shook his head and said he had thought it over.

It was delayed because of Zhao Ziqin's case.

Now that the case is closed, I really should think about which old case to handle next.