This smell that alarmed Chen Yan was nothing else.

It's just a trace of... stink hidden under the strong smell of blood.

Turning off the olfactory gene lock, Chen Yan frowned.

Stink!

And it's different from the smell in the bathroom, this smell...

Chen Yan is relatively familiar.

In other words, every detective with some experience will be familiar with it.

It's corpse odor.

Corpse odor is different from other odors. This odor is very special. It is the kind of smell that you will never forget once you smell it.

"When the deceased was found, how long had it been since his death?"

"28 hours." Ren Hongfeng answered simply: "Based on the shape, depth and rigor mortis of the corpse spots, it was about 28 hours before we found the deceased."

28 hours…

Chen Yan thought secretly.

After any animal dies, the bacteria in the animal's body begin to digest and decompose the body itself after a certain period of time.

When primates, including humans, die, it usually takes an hour for the body to gradually stiffen, and the bacteria in the stomach and intestines to begin digesting and absorbing human tissue.

Slowly and over time, corpse odor will develop.

As time goes by, when decomposition and digestion reach a certain level, a large amount of gas will be produced inside the corpse, and the corpse will clap and eventually explode.

Just like the well-known whale explosion.

But for just over a day, according to the room temperature of about 20 degrees in this house, corpse odor should not occur.

In other words, it should not produce corpse odor that is easy for people to smell.

Of course, when Chen Yan's olfactory gene lock is turned on, the odor sensitivity he can capture is more than a hundred times that of a normal person.

Observing every part of the scene carefully, Chen Yan simultaneously opened the visual gene lock.

The entire room was like frames magnifying before Chen Yan's eyes.

Every tiny detail cannot escape Chen Yan's observation.

The blood splattered on the energy-saving lamps on the roof, the dust in the cracks at the corners of the walls, and the digging marks left by the deceased scratching the floor tiles due to severe pain...

At the crime scene, every detail flashed through Chen Yan's mind.

Ren Hongfeng did not disturb Chen Yan.

He had already heard the rumors about Chen Yan.

Wang Shun, the current captain of the Iron City Detective Team, is a classmate of Ren Hongfeng.

Wang Shun was promoted from his deputy position to the top position this time, thanks to Chen Yan's help.

Otherwise, the case of escape from custody and murder cannot be solved, and it would be good if he is not removed from office.

According to Wang Shun, Chen Yan is definitely a top-notch expert in on-site investigation.

Very good at finding problems in details.

He hoped that this time, Chen Yan could still make some discoveries.

Turning around the screen, Chen Yan came to the place where the deceased was live broadcasting, which was also the bedroom where the deceased lived.

There was only a computer screen on the computer table, and the host computer had been taken back for inspection by the city's detective team.

Behind the table is a double bed.

The entire bedroom space is decorated in a warm and pink tone, with some doll decorations hanging on the screen.

The bed surface is very clean, and there is a faint fragrance. The quilt cover is smooth and must have been changed recently.

"The deceased should have just changed the bedding." Ren Hongfeng, who was following Chen Yan, noticed that Chen Yan was focusing on the bed: "It is very clean, and even the hair of the deceased was not found."

Chen Yan nodded, it was indeed very clean.

The visual gene lock was turned on and nothing suspicious was found.

Turning around and walking out of the bedroom, Chen Yan went to the bathroom.

Since the murderer brutally cut off the facial tissue of the deceased, there is a high probability that it was not an unintentional act.

The missing facial tissue has not been found yet. It must have been taken away by the other party, at least out of this room.

In doing so, the other party must have a purpose.

However, there is a high probability that the other party will not be able to take away the bloody skin.

It is possible to wash your skin in the restroom.

The bathroom in the house is not big.

The wash basin is very clean.

"Team Leader Chen," Ren Hongfeng looked at the wash basin: "I have personally inspected this wash basin, and the elbow below has also been opened."

"We also checked the sink in the kitchen. There is no trace of blood in it. The other party probably has not used this sink, nor the one in the kitchen."

Never used it?

Have you checked the sink in the kitchen?

Of course Chen Yan believed in Ren Hongfeng's judgment.

If an old detective has personally inspected something, there will generally be no flaws.

Guban

Moreover, Ren Hongfeng is very meticulous and must have had experience in this area before.

However, the sewerage in the bathroom is not limited to this area.

The washbasin is just the place where people are most used to washing their hands.

"Team Ren," Chen Yan looked away from the sink: "This floor drain... have any of you touched it?"

Floor drain?

Ren Hongfeng shook his head: "The floor drain has never been tested."

Haven't checked?

Since it has not been inspected, it means that no one has touched it. However, since no one has touched it, why is the surface of the floor drain so smooth?

There are generally three drainage points in the bathroom.

Wash basin, toilet and floor drain.

However, after Chen Yan looked at the washbasin, he didn't pay attention to the toilet, but went straight to the floor drain.

As we all know, few people wipe the bathroom clean after taking a shower.

Even if there are, few people wipe the floor or even the floor drain.

In Chen Yan's eyes, there were traces of dried water stains on the walls in the bathroom, as well as on the floor.

This proves that the deceased did not have the habit of cleaning the walls and floors after being exposed to rain.

But why is the surface of the floor drain smooth?

Chen Yan squatted down, approached the floor drain, and turned on the smell gene lock.

really!

A faint smell of blood came from the floor drain!

"Tweezers," Chen Yan carefully took out the metal piece on the surface of the floor drain and put it into the evidence bag: "Bring me a longer tweezers!"

…

After a while.

Ren Hongfeng and Wang Xuan behind him looked at the tweezers in Chen Yan's hand in shock.

There is a scalpel clamped on the long forceps.

The stainless steel blade reflects the light like a ray of cold light.

"This...this..."

Wang Xuan stuttered and was almost speechless looking at the scalpel.

Ren Hongfeng's face turned red with excitement!

A scalpel was found in the floor drain of the deceased's home, and what was visible to the naked eye was that there was blood in the gap between the scalpel blade and the handle.

The murder weapon!

This is most likely the murder weapon used by the murderer!
To be continued...