Chapter 920 The Disappearing Blood (Please Vote and Subscribe!!!)

At 7:20 in the morning, Rena Mizuno, Yoko Okino, Ran Maori and others were a little restless in the living room.

Two murders occurred in a short period of time, which made Rena Mizuno wonder whether the program team encountered a Mercury retrograde day, and everything went wrong.

In this situation.

I am afraid that I will not be able to return to Tokyo today.

On the third floor of the hotel, Maori Kogoro put one hand in his pocket and was listening to Ishimoto Kyokichi explaining the personal information of the deceased. Makoto Sakaki, Miss Miyano, Kid and Conan were crowded in front of the stiff body to check the wound.

There was a dagger stuck in the back of the body, lying face down, with wide-open eyes as big as pigeon eggs, gray and white, and no signs of life had been lost.

It is hard to imagine

Naoki Seiichi, who was still alive and kicking last night, became a corpse in less than 12 hours.

"The deceased was wearing a white yukata, barefoot, with tense muscles, and his hands were hooked, which seemed to be a reaction to life, and there were no other external injuries."

Sakaki Makoto's eyes swept over the body from top to bottom, and he said slowly:

"According to my experience, the deceased should have been attacked from behind and stabbed in the heart. The deceased did not die on the spot, and struggled to crawl forward for a distance, and finally died of ischemia in various systems."

Conan and the other two nodded in agreement, and Kid said:

"Since the deceased crawled forward for a distance, there should be impurities left between his fingers. Look at the hands of the corpse, they are clean, even the fingers are There are no stains on the nail seams, which is a bit strange. Could it be related to the light rain last night? "

"No"

Conan shook his head and touched the corpse's yukata with his little hand:

"The clothes are very wet from the shoulders, back to the calves, including the chest, but the drizzle last night was not so heavy that it wet the clothes all over the body. Looking at the front and back of the yukata, there is no dust except blood. I think Naoki Seiichi may have been killed in a very clean place."

When it comes to the light rain last night, no one present has more say than Conan. If he says it is light, then it must be light.

"If we talk about the cleaner places in the hotel, it's probably his room or the bathroom."

Miss Miyano frowned and said:

"But the bathroom will be closed at 12 midnight."

"What about his roommate?"

"Naoki Kiyoshi's roommate got drunk last night. After dinner, he went back to his room and fell asleep. He slept until he was woken up this morning. He didn't know anything about what happened last night."

"Damn!"

Kid punched the ground and said angrily:

"It would be great if there were surveillance cameras in the hotel!"

"Don't worry."

Sakaki Makoto said:

"As long as we can determine the location of the crime, the case will become much simpler. Xiao Ai, you just said that the only places in the hotel that won't leave traces are the room and the bathroom?"

"Look at his fingers, they are so clean, and he's wearing a yukata. He must have been killed before or after taking a bath. In other words, these two places are also easy to clean up the traces left, right?"

Pop!

Kidd snapped his fingers and said with great joy:

"That's much easier! Even if the criminal wipes off the blood, the luminol reagent will still react! Just let the police check Naoki Kiyoshi's room and the hotel bathroom!"

After discussing the case here, a field investigation is needed. Kidd told Ishimoto Kyokichi the results of the discussion. Ishimoto Kyokichi immediately asked someone to call up the luminol reagent on the spot and go to Naoki Kiyoshi's room.

After drawing the curtains, Naoki Kiyoshi's room fell into darkness. The police officers put on masks and squeezed the small spray bottle to spray the luminol reagent evenly to every corner.

Soon, dots of blue fluorescence appeared on the tatami. Ishimoto Kyokichi's eyes lit up and quickly asked someone to record the location where the fluorescence appeared.

After the test, Ishimoto Kyokichi asked someone to extract the blood traces on the tatami for DNA comparison.

But.

The result was surprising, the match was unsuccessful!

The blue fluorescence in the room was not left by Naoki Kiyoshi!

Everyone looked at each other, a little embarrassed.

You know, the luminol reagent not only reacts to blood, but also to excrement, and the light emitted is the same.

That is to say

The bright blue light spot in the room may be um.

Just as everyone was about to go to the bathroom for the next test

"Wait a minute!"

Everyone looked back blankly and found that Makoto Sakaki had lifted a piece of tatami at some point, picked up a small spray bottle, and sprayed it twice under the tatami.

Yes!

Everyone was refreshed, the tatami is double-sided!

The criminal may have turned the tatami over after committing the crime to avoid the luminol reagent test!

"No fluorescent reaction."

After a while, Makoto Sakaki stood up and threw the small spray bottle back to the policeman next to him:

"Leave some people to check other rooms, and the rest follow me to the bathroom."

Since the place where Naoki Seiichi was killed was not in his own room, the possibility of being in someone else's room is even more negligible, but no matter how small the probability is, it is not impossible, and the most basic test still needs to be done.

The highlight is the bathroom.

The bathroom was filled with mist, the ground was slippery, the hot springs were gurgling in the pool, and the air was filled with a faint smell of sulfur.

The bathroom was empty at the moment, which was convenient for testing.

Turn off the lights, pull the water gate, turn on the fan, and the mist in the bathroom will quickly dissipate. Once the ground is slightly dry, the police will immediately start spraying luminol reagent.

"If the prisoner killed Naoki Seiichi in the bathroom, could he just wash away the traces with the faucet?"

A policeman asked:

"Is the luminol reagent affected by water?"

"Yes, but very low."

Conan replied:

"The principle of the luminol reagent is that it reacts with hydrogen peroxide under the catalysis of heme in the blood, showing blue-green fluorescence. Even if a drop of blood is diluted a thousand or ten thousand times, it can still be detected, as long as As long as the element of blood is not destroyed.”

"I heard that some prisoners use things like bleach and detergent to disrupt the detection of luminol reagents."

"It is indeed possible, but you also said that it is just interference. As long as the bleach wears off, traces of blood can still be detected. What's more."

Looking around, Conan curled his lips:

"At 12 o'clock in the evening, after the hotel closes, it is like a secret room. The prisoner's crime location must be in the hotel. If the place where he killed Naoki Seiichi is not in the room or corridor, it can only be in the bathroom."

During the conversation, the police had sprayed luminol reagent in every corner of the bathroom. The strange thing was...

The room is still dark, only some dark blue fluorescence appears on the wall, which is not blood at all, but something like detergent.

"this"

Seeing this, Conan was dumbfounded, with a look on his face as if he had seen a ghost.

How is this possible? !

"Did the prisoner really completely eliminate the blood residue?!"