Chapter 546: Flight Attendant? Where Is There a Flight Attendant?

The audience was discussing.

"This case is from a year ago. Even if we find clues, they should all be old clues by now. Are they really useful?"

"Of course they're useful. Don't you see who's investigating now? It's Chen Fan! With him here, what case wouldn't be solved clearly?"

"Actually, some evidence needs to settle. Some things only reveal themselves after time has passed."

……

Chen Fan searched around the inside of the car but didn't find anything of substance.

Finally.

He turned his gaze to the car windows.

Because the car had been sitting there for a year, and nothing had been used to cover its outer surface,

a thick layer of dust had settled on it.

And in that dirty dust, Chen Fan noticed some tiny things.

It was…

Chen Fan immediately took out a bottle of chemical solution from his person.

Then he had everyone leave the car, opened the solution, placed the bottle cap inside the car, and shut the doors.

Xiang Qinqin didn't understand any of this, so she asked Chen Fan: "What is that thing?"

Chen Fan smiled and played it coy: "You'll find out in a bit."

After the car had been sealed for a period of 25 time, under the effect of the temperature, the hidden information on the car windows was finally brought out.

This time.

Everyone could see that some fingerprints had appeared on the car glass.

Because too much time had passed, the fingerprints weren't all that distinct, but they could still be made out.

Only now did Chen Fan step forward to explain: "Many people think that if enough time passes, they can destroy some evidence, but in fact that's simply not possible."

"Take these fingerprints on the car window, for example. By reacting with amino acids, proteins, and the moisture in the air, cyanoacrylate can make the fingerprints appear."

"Because the cells and secretions on the surface of a person's body will always leave some traces in the air."

Liu Mengyan hurriedly recorded all of this down.

In fact, this kind of thing can also be learned from books.

But what you learn from books doesn't stick with you as well as experiencing it firsthand.

Old Liu said: "That's right. We also used this method to find fingerprints on the car window, but when we ran the comparisons, we really didn't find any match for the killer."

Chen Fan said: "Judging by the size of the fingerprints, the perpetrator's profile should be between fourteen and sixteen years old. Someone that age should be a student. Even though the school is big, it should be easy to find them, right?"

Old Liu nodded: "Indeed. We've also locked down a portion of the suspects."

"But the unfortunate thing is that during that period, a lot of students dropped out, and the school happened to suffer a major fire, losing a lot of student records. On top of that, the school was poorly managed and had no money, so we couldn't find where they went either. That's why it's dragged on until now."

Even though technology today is extremely advanced, if a person wants to disappear, it's still very easy.

The audience grew doubtful about this.

"That shouldn't be. Isn't it possible to pinpoint someone's location through their phone carrier no matter where they go? Even if a lot of students dropped out back then, the school could still contact them."

"I can only say you're being too idealistic. Take my uncle, for example. A few years ago he got pulled into a pyramid scheme. Even though the family reported it to the police, they still couldn't reach him. If he hadn't been clever enough to escape on his own, we never would have found him, okay?"

"Exactly. If this kid's parents knew their child had done something like this, they definitely wouldn't want to turn their own child in. As long as they didn't tell the school any contact info, changed everything, and went to live somewhere fairly far away, they'd be impossible to find."

"I already told you the school suffered a terrible fire and was poorly managed. Why do you all have so many 'whys'? Do you really think you understand better than the police?"

……

Everyone started arguing in the bullet comments.

All the clues had been gathered. The next stage of deduction was no longer the forensic examiner's job.

Old Liu just wanted to take this chance to educate everyone on the methods of searching for clues.

After a few polite remarks.