Actually, in general, when the killer removes such a large piece of skin, operating with gloves is obviously not as convenient as without gloves.

Moreover, from the cut marks and thickness of the skin, it's clear the person is not skilled with a knife.

They don't seem to be a good chef, nor a doctor used to handling a scalpel.

The possibility of them not wearing gloves is quite high.

Additionally, after the killer treats the skin for preservation, they also have to paint on it, making the possibility of wearing gloves even lower during this process.

Lu Chuan is now working on separating the transparent resin from the skin.

This is the reverse thinking of collecting fingerprints from the skin.

Collecting fingerprints from skin is not done directly on the skin, but by using certain methods to transfer the fingerprints.

In this regard, Lu Chuan feels a bit lucky.

Because the transparent resin material on the skin can serve this purpose.

What Lu Chuan needs to do now is separate the resin material from the skin and look for fingerprints on the inside layer where the resin material contacts the skin.

This is a very meticulous work.

The resin itself is very sticky, and after adhering to the skin, due to the skin's rough texture, it is very difficult to separate.

Fortunately, the skin had been soaked in formalin beforehand, providing a certain lubricating effect.

Though the process is slow, at least it won't cause significant damage to the skin.

Yang Sen and Old Bai are currently at the computer, pre-processing the fingerprints Lu Chuan collected from the frame.

"Most of these fingerprints have been smudged and can't be used."

Fingerprints are most vulnerable to smudges.

It's like when we unlock a phone screen by sliding the button.

The finger makes a long slide, and although it leaves a fingerprint, there's a long drag mark.

Only the outer edge of the first position where the finger lands might have a slightly clear fingerprint.

Yang Sen agrees with Old Bai's assessment: "It's been over two hours and I've only processed three fingerprints, all of which failed to match."

The action group has already collected fingerprints from all the exhibition hall workers.

This includes the art handlers and exhibit workers.

This means these people would definitely leave fingerprints on the frame.

But now, the failure to match them suggests that Yang Sen's pre-processing of the fingerprints was unsuccessful.

In fact, Liu Guodong didn't instruct Yang Sen and Old Bai to handle these fingerprints.

They were just idle and wanted to give it a try.

The result of their attempt is that age indeed makes a difference.

They had the will but not the strength.

Not every man at any age is fit to go to Tongguan Road, for example.

At 10:28 p.m., the separation of resin pigment from the skin was finally completed.

Looking at the whole human skin and the transparent resin covering it, Lu Chuan heaved a long sigh.

The killer must be a pervert.

During the separation process, Lu Chuan increasingly felt this way.

Beside him, Shen Yan furrowed her brows. Having been a forensic doctor for two years, it was the first time she encountered such a crazy and terrifying case.

Although when dissecting corpses before, she also touched the skin of the deceased. Even when cleaning organs and cutting the skull, some skin might be peeled back.

But that was due to the work process requirement, not like now with just a piece of human skin laid out.

This reminded Shen Yan of a movie she saw before, Painted Skin.

Honestly, the horror level on TV isn't in the same class as this.

"Next, I will collect the fingerprints from this layer of resin paint. If successful, it would essentially confirm they were left by the killer."

This inference is correct.

The skin had been treated with formalin, and then painted.

If fingerprints can be extracted from the skin during this process, they are definitely the killer's.

Unless during fingerprint processing, the deceased's skin was intimately touched by another.

"Next, the skin will be handed over to you."

Even though the cause of death can't be determined through the skin, Shen Yan still needs to conduct some routine toxicological tests.

Don't underestimate these procedures.

In many murder cases, the cause of death is not evident at a glance.

Asphyxiation, sharp weapon injuries are common, but many murder cases can't reveal the cause from the body's exterior.

This is also the fundamental reason for autopsy.

Of course, in forensic science, the main goals of an autopsy are twofold.

One is to determine how the body died.

The other is to identify who the body is.

Usually, neither is necessary.

Carefully rolling up the skin, Lu Chuan continued, "While separating the resin, I found a half-centimeter-long scar under the deceased's breasts, suggesting she might have had breast augmentation."

"I've reported this situation, and Group Leader Sun and Group Leader Ren should have started investigating."

Currently, since the victim's identity hasn't been determined, any information that might lead to identifying her must be prioritized.

And a breast augmentation surgery isn't a small procedure.

Whether at a hospital or other beauty institutions, there might be identity records.

Shen Yan nodded, took the skin, and returned to the forensic laboratory.

Over there, Wang Changjiang's plane had landed, and he rushed back overnight.

Early the following morning.

All members of Action Team One and Two were deployed.

With no new leads from the exhibition hall, all efforts were focused on the victim's past breast augmentation lead.

Last night, a further forensic examination of the skin basically confirmed some basic information about the victim.

A female, based on the tightness and color of the skin, estimated to be aged between twenty and forty.

Height about 1.66 meters, weight around fifty kilograms.

The time of death should be within a month.

The cause of death hasn't been determined yet.

Because the skin on the back was missing, and the front lacked any visible trauma or toxic reactions.

Furthermore, the abdominal skin had no stretch marks, indicating she probably hadn't given birth.

So far, the lead is the wound beneath the deceased's breasts, a scar possibly left from a breast augmentation surgery.

Of course, this is just speculation.

She might have had some illness, like the removal of a cyst or breast hyperplasia, which could also leave a scar in that area.

Wang Shuai, an investigator on Action Team One, who joined the police thirteen years ago, is a core member of the Criminal Investigation Team.

In this investigation, he's responsible for Tianmei International Beauty and Plastic Surgery Hospital.

Nowadays, it seems all plastic surgery hospitals can be connected to "international."

Just like the little darlings on Tongguan Road, if you ask them how long they've been working, their answer is uniformly two or three times.

They never say it's the first time, nor a hundred times.

If you don't ask, they won't say.

If you ask, it's always two or three times, with an urgent need for money at home, and they'll leave once they earn enough.

But they are still there next week, and also next month.

The family is always short on money.

After glancing at the plaque on the entrance and the stream of sweet ladies in pursuit of truth, goodness, and beauty, Wang Shuai walked in.

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