1995, Starting as a Criminal Investigation Expert

Li Shu and Zhao Yong, go to the left.

Xu Qiang and his team analyzed that the suspect might take bus 229, either back to the city or to Jigang.

Tan Guoxiong then followed Peng Rong to the right to search.

Zhao Yong broke off two branches from a nearby tree to make it easier to part the grass and search for the item.

Li Shu followed, searching silently.

But deep down, Li Shu felt that there was little hope in searching like this.

The reason I didn't rush to share my thoughts earlier was precisely because of this.

Previously, Xu Qiang and his team had been constantly updating the technical team with the information they obtained from their investigations at the crime scene.

The suspect's circumstances can also affect the on-site investigation.

For example, if the investigation reveals that the suspect was wearing sunglasses, and the sunglasses are found at the scene, it can be immediately determined that they belong to the suspect, not the victim.

Therefore, Li Shu actually knew about the suspect's clothing and appearance.

Just as Zhao Yong said, the two of them had put on a certain degree of disguise.

The one who fired the shot was wearing a hat, not a baseball cap, but more like a dark brown knitted hat.

Then he put on a black cloth mask and sunglasses, covering his face completely.

She was also wearing a coat.

It's only early September, and it's still hot in Nanjiang, so wearing a jacket is obviously to hide it.

Some people described it as a dark-colored jacket.

Then black pants and regular sneakers.

The suspect on the motorcycle was also wearing a mask and sunglasses, as well as a blue and white baseball cap.

He was wearing a navy blue suit jacket, or a similar color.

The eyewitness accounts are different.

After all, it happened suddenly, and everyone was busy with their own things. To be honest, no one would have paid attention to the two of them until the moment the shooting started.

There are also motorcycles.

Many people have noticed this.

Most people believe it is a Honda CG125-style straddle motorcycle.

However, some people say it's not a Honda, but a Jetta 100.

Jetta is a local brand from Nanjiang, established in 91.

In recent years, motorcycle manufacturers across the country have been imitating imported motorcycles, and the Jetta is the best example of imitation.

Last year, they sold 28 vehicles, shocking the entire nation.

Anyway, their cars are everywhere in Nanjiang City.

The two cars have almost the same overall shape, except for the engine position.

Therefore, people familiar with this car should be able to recognize it.

Therefore, Xu Qiang and his team speculated that the suspect had ridden away on a Jetta 100 motorcycle.

So here's the question.

This is a motorcycle that you can see anywhere on the street.

Then there's clothing.

If the suspect was wearing stockings during the robbery, they might have torn them off and discarded them after leaving the scene.

But they were just wearing hats and masks.

It was a little unusual, but not so unusual that people would stare at him on the street because of his strange attire.

Zhao Yong's assumption that they would discard the items was merely wishful thinking.

Anyway, Li Shu felt that if he were a suspect, he definitely wouldn't litter.

Firstly, it's unnecessary.

Wearing a hat and sunglasses is normal attire.

If wearing a jacket on a hot day is too conspicuous, then taking off the jacket and covering the metal money box can conveniently hide it.

Second.

Li Shuyou had read the on-site investigation reports of the first four cases.

Overall, the suspect was well-prepared and did not leave much physical evidence at the scene.

I once chatted with Shen Chuan about this case, and he said that the other party was meticulous, a master, a habitual offender, and had a strong sense of counter-surveillance.

How could someone like that make the mistake of carelessly discarding evidence?

Motorcycles only!

Following his own thoughts, Li Shu realized that the only thing the suspect might have abandoned was the motorcycle.

It's not nighttime, so the police response will take time.

In broad daylight, they must have known that the police would react quickly and set up roadblocks immediately after the incident, focusing on checking motorcyclists.

Then they might abandon their motorcycles and switch to other modes of transportation.

However, this speculation is only a possibility.

Because motorcycles are expensive items, not cheap goods, their origin is easy to trace, and this could very likely expose their identities.

Perhaps it could be burned down, but that would be too conspicuous in broad daylight.

Although the hope seemed slim, Li Shu did not slack off in his search.

In front of and behind the house, in every nook and cranny.

They parted the grass on both sides of the road, carefully searching for anything unusual.

Zhao Yong, who was standing nearby, watched all of this and nodded in approval.

Patience is essential to becoming a qualified technical police officer.

As he walked, he changed the subject, saying, "Li Shu, some of them probably think that we technical police just sit in our offices, don't arrest anyone, just go to the scene to help out, and don't even have guns. Can we even be called police?"

Li Shu looked at Zhao Yong, so what?

Zhao Yong said, "But I don't think so. Look at Lao Han. When he was transferred back from the military, he started as a criminal police officer. Because he was educated and quick-witted, the leaders made him a technical police officer."

"He was still emotional at the time, but later his captain said something to him, and he keeps talking about it to you newbies."

"The gist of it is that if you want to be a good criminal investigator, you have to be willing to work hard and run around. If you don't run around and ask questions, clues won't come to you."

"Secondly, you have to use your brain. Just putting in hard work won't work; that's a stupid method. You also have to use your brain to solve the case."

"Then he told Lao Han, 'You, a technical police officer, are the same. You said that when a criminal investigator takes on a case, all sorts of messy clues come up, it's like walking in the dark with no direction at all.'"

"Isn't that what technical police do? They have to painstakingly examine and confirm each piece of physical evidence, determining which is useful and which is not."

"Then, we also have to use our brains. We can't just rigidly check the evidence. We have to take initiative and think about the connections between these physical evidences."

"You can't think that just because you're a technical police officer, you're only responsible for investigating crime scenes and solving cases is the criminal investigation team's job, it has nothing to do with you."

"Li Shu, now that this case is in our hands, it's our case. We have to find a way to solve it."

Li Shu nodded.

It's not surprising that Zhao Yongneng would say these things to him.

After all, it was his first time being on-site, so this was essentially a teaching session for him.

These words should represent the working spirit of the technical team under Han Jianjun's leadership.

"Use your brain?"

Li Shu muttered to himself, unable to help but wonder, "It sounds so easy, but how do I actually do it?"

But as I thought about it, I actually came up with some ideas.

"fingerprint."

Li Shu lost his voice.

Zhao Yong turned his head, thinking that Li Shu had found the fingerprints, and quickly asked where they were.

Li Shu shook his head and said, "Brother Yong, I mean that half of the fingerprint."

Thinking about it more deeply, this vicious robbery is actually a continuation of four burglaries in the High-tech Zone.

When these five cases are considered together, the most direct and definitive piece of evidence that can identify the suspect is still that one and a half fingerprints.

"What I mean is, if we don't find any new physical evidence at the crime scene, we should focus our efforts on that half fingerprint and try to identify the suspect by comparing the fingerprints."

Essentially, it's about finding someone.

Zhao Yong nodded thoughtfully: "That's right, this is not an isolated case, it was done by a group of people, and that half fingerprint is very crucial."

However, he was also aware of the difficulty in matching that half fingerprint.

It is said that the AFIS system will be introduced, and that Li Shu has figured out a way to compare incomplete fingerprints.

But nobody knows if they can be matched.

"It would be best if Xu Zhi and his men found the person; that would be the best outcome," Zhao Yong sighed, then gestured for Li Shu to continue.

Li Shu also knew that fingerprint matching was only a possibility, and not yet certain.

Therefore, we must not give up on this faint hope.

At that moment, I said no more and focused on searching.

The sun rose, the sky was bright and clear, but there wasn't even a sip of water to drink; the sun was so strong it made people dizzy.

They searched like this until almost noon before Han Jianjun finally called them back over the walkie-talkie.

Zhao Yong moved his waist; he has a herniated disc, and bending over for too long causes him severe pain.

He frowned and thought for a moment, then called Li Shu back.

"Looks like I was oversimplifying things."

Li Shu could hear the heaviness in his tone.

There's no way around it; it's like finding a needle in a haystack.

When they returned to the scene of the crime, Lao Wei and his team had already begun collecting the ballistic scale.

The bodies have already been removed by the forensic team.

All that remained on the ground were pools of blood and white chalk lines depicting human figures.

Tang Weidong also came.

Han Jianjun and Xu Qiang stood beside him, their expressions solemn and serious.

Li Shu nudged Yang Caixiong and asked if they hadn't caught the suspect yet.

"no."

Yang Caixiong shook his head slightly.

Li Shu's heart sank.

The incident occurred before 8:30, and it's already 12 o'clock. Three and a half hours have passed; by motorcycle, they would have long since ridden out of Nanjiang.

Tang Weidong left in a hurry.

Han Jianjun turned back and told everyone to retreat.

The site has been surveyed; there's nothing left.

For the technical team, the on-site work is now complete.

Li Shu noticed that Han Jianjun's brows remained furrowed, clearly indicating that the physical evidence at the scene was not ideal.

He's a veteran, experienced, and knows what he's doing.

The atmosphere inside the car was heavy throughout the journey.

At key intersections, colleagues set up checkpoints to conduct inspections.

It felt like the whole city was coming to life.

Despite this effort, the suspect was still not found.

Li Shu was puzzled. How did these two people disappear?

Beside him, Tan Guoxiong suddenly said, "Li Shu, what if we had matched the fingerprints and solved the case before...?"

He didn't go on.

The image of the three cold corpses immediately flashed before Li Shu's eyes, and his mood grew increasingly heavy.

The car returned to the municipal bureau.

Everyone hurriedly carried their belongings upstairs.

At this moment, Han Jianjun suddenly called out to Li Shu, pulled him aside, and asked, "Li Shu, how confident are you about the comparison of that half fingerprint?"

Clearly, just as he had thought of half a fingerprint, veterans like Han Jianjun had also thought of it.