North American Detective: I Am Proficient In All Kinds of American IAI

I heard Holz's exclamation inside.

Everyone was mentally prepared.

go in again.

They were still shocked by the scene before them.

As far as the eye can see, there is a glowing blue light.

Everyone's exposed skin was reflected in a faint blue color, which was dark and slightly weird at the same time.

"What happened here?" The only female forensic officer raised her throat: "Did the murderer directly treat the blood as clean water and use it to mop the floor?"

This is a rare big scene.

Even these well-informed witnesses are still in a daze at the moment.

Dean didn't feel anything.

After scanning around, he showed a puzzled expression: "These marks seem to be really caused by the mop, but if this is the case, what is the other party's purpose?"

Although it is difficult to completely clean up the traces left by blood, wouldn't it be more troublesome to clean up the blood stains everywhere?

"The murderer was cunning and clever."

Holz didn't look very good.

He took out a laser pointer from his pocket, clicked a few times on the area with the strongest blue light on the ground, and looked at Dean:

"These locations have a clear sense of overlapping layers, and one of them should be the location where the victim bled profusely and even died at the end.

In order to cover up this place, the murderer deliberately mopped several places around and mopped it many times. "

"What's the point?" Dean was even more confused.

He had never been exposed to such a professional analysis before, so he didn't understand the point of Holz's words.

"This involves bloodstain analysis." Holz pointed to the female forensic officer who was frowning and thinking: "Melon is an expert in bloodstain analysis in our forensic department, Detective Dean, I think you may need her help. "

The female forensic officer heard Holz calling her name, regained her senses, and explained to Dean:

"Forensic doctors have a catchphrase that corpses can talk.

It's not just corpses.

Every drop of blood at a crime scene has its story.

Through blood drop sputtering shape, trajectory, assay and other means.

We can infer the date of the crime, the murder weapon, the trajectories and movements of those involved, the killer's left-handedness, the type of injury the victim suffered, and even whether the wound was fatal at the time. "

"but."

Mellon frowned again: "This place has been covered by a large number of blood traces, and it is difficult for us to obtain useful information through blood stain analysis."

Make bricks without straw.

The bloodstains are all covered, and a fart analysis can only be done to identify the time, type and genetic information of the blood at most.

Dean finally understood now: "So you mean that the murderer knew the methods that the forensics department might use?"

"Yes." Mellon nodded: "For example, in the current situation, we can't lock the last location of the victim through blood traces, so we can't deduce the murderer's movement trajectory, body height, etc. In this case, In fact, it is more cunning than directly using reagents to clean up the blood residue."

Even with reagents, it may not be possible to completely remove all blood residue.

But it is difficult for you to find the black dots left before blackening on a piece of paper that is completely blackened.

That's what the killer thinks.

"Well, the murderer left us at least one dead dog." Dean was about to ask them to do something that could help: "Guys, please collect this blood from various locations and analyze the blood in it." components, surrounding walls, fireplaces, ceilings, etc.”

"Wait!" Mellon interrupted Dean, "You mean the ceiling, the walls, the furnace wall, and the bloodstains?"

"Yes." Dean pointed to the top of his head: "But it's not very obvious."

Mellon came to the place Dean pointed out.

After taking a few glances, she shook her head in disappointment: "There are too few traces for reference, and I can't analyze anything. If there are more reference traces in a few directions, it will be more or less the same."

Analysis requires data as a reference.

But the data left on the scene is too little.

After collecting some samples, the forensics department left with the rotten dead dog.

Lawrence hadn't come yet.

After the bald patrolman Hawke left, he still hasn't returned.

Bored, Dean walked to a corner of the fireplace.

On the wall here, there are more than a dozen photo frames hung in the shape of hearts. At first glance, people feel that this is a loving family of four.

After Dean took a closer look at their group photo, a weird smile appeared on his face.

He discovered a very interesting thing.

In the photo, a man and a woman, who should be brothers and sisters, are holding hands, smiling brightly, and looking at the camera.

This scene, on the surface, seems to be no problem.

But it is interesting to combine the eyes of the two parents.

Behind the brothers and sisters, the master's eyes focused on the son's head from the corner of his eye, and the mother's eyes, like the master's, looked at the back of the daughter's head.

"Is it because the father doesn't like the son and the mother doesn't like the daughter?" Dean squatted down and scanned the traces around the photo frame.

Compared with the rest of the photos, this photo is too out of harmony.

Looking at it, he found something strange.

In order to maintain this kind of photo frame for a long time, special materials are generally used. After the air inside is sucked out, the gaps are completely sealed with a substance such as beeswax.

But in front of the photo frame of the family photo, the gap at the bottom has lost its sealing function.

Someone opened the frame and replaced the photo inside.

Dean stretched out his finger, placed it on the bottom of the photo frame, and gently pulled it.

The photo that was originally fixed inside, like pulling out paper, slid down and fell into Dean's palm.

Pick up the photo.

Only then did Dean notice that on the back of the photo, there was a passage written in blood: behind the sacred, it is full of lies and filth!

This sentence, coupled with this eerie photo, seems to carry some kind of suggestion.

And if you look at these photos up close, you can easily find that this photo is different from the rest of the surrounding photos, as if deliberately reminding others that there is something wrong with it.

"Is this a case-solving or a puzzle-solving!"

Dean felt that the murderer was sick!

He tucked the photo back into the frame, then tore it all off.

Put away the frame.

Dean came to the helper's guest room.

As soon as the door was opened, a strange smell came over the surface.

The room size is not small, some like that of a single apartment, there is also a separate bathroom, and a TV is hung on the wall.

Below the TV is a cabinet with a VCD with a flashing light on it, and a bunch of discs on the VCD.

besides.

It is littered toilet paper, smelly socks, beer cans and other garbage.

Dean walked to the VCD, picked up the discs and looked at them carefully.

Most of them are romantic movies, a few are western cowboy movies, and at the bottom, he also found a ***.

"Harry is here and will love this CD."

Dean smiled and returned to the villa hall with nothing.

at this time.

Hawke, who left, finally came back.

Panting heavily, he handed two document bags to Dean: "The above is the basic information of the householder's family, and the other is the identity information of the helper. You will never guess who he was before!"

Thanks to the book friends of the "Three Brothers of the National Football Team" for the reward of two thousand book coins, and thanks to the boss.

cough cough~

The speed at which the old thief lays eggs is a bit slow~

Mainly as a reader, I know which case the old thief wrote about. Although I didn't guess my second creation, I wrote the original case in the comment area.

This allows me to write normally without any sense of expectation.

I had to rewrite this chapter.

Also, please don't spoiler if you can~

please!

Changing the outline of the case is a waste of hair.

alright.

Good night, brothers.