At 7:20 in the morning, Rena Mizunashi, Yoko Okino, Ran Mouri and others were feeling a little restless in the living room.
Two murders occurred in a short period of time, which made Rena Mizuno wonder that the program crew encountered Mercury retrograde and everything was going wrong.
In this case...
I'm afraid I won't be able to return to Tokyo today.
On the third floor of the hotel, Kogoro Mori, with one hand in his pocket, was listening to Kyokichi Ishimoto explaining the personal information of the deceased. Makoto Sakaki, Miss Miyano, Kid and Conan were huddled in front of the stiff corpse, checking the wounds.
There was a dagger stuck in the back of the corpse, and it was lying face down. Its eyes were wide open, as big as pigeon eggs and grayish white, and it had long lost any signs of life.
It’s hard to imagine...
Seiichi Naoki, who was still alive and kicking last night, became a corpse in less than 12 hours.
"The deceased was wearing a white bathrobe, barefoot, with tense muscles and claw-shaped hands, which seemed to be a reaction to life. There were no other external injuries..."
Sakaki Makoto's eyes swept across the corpse from top to bottom and he said slowly:
"Based on my experience, the deceased was attacked from behind and stabbed in the heart. He did not die on the spot, but struggled to crawl forward for a distance before dying from lack of blood flow to various systemic diseases."
Conan and the other two nodded in agreement, and Kidd said:
"Since the deceased crawled forward for a distance, there should be impurities between his fingers. Look at the hands of the corpse. They are clean, even the nails are not dirty. It's a bit strange how clean they are. 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 were very wet from the shoulders, back to the calves, including the chest, but the drizzle last night was not heavy enough to soak the clothes. Looking at the front and back of the yukata, there was no dust except blood. I think Naoki Seiichi might have been killed in a very clean place..."
When it comes to last night's light rain, no one present has more say than Conan. If he says it was light, then it must be light.
"If there's a clean place in the hotel, it's probably his room, or the bathroom..."
Miss Miyano frowned and said:
“But the bathroom closes at 12 midnight...”
"Where's his roommate?"
"Naoki Seiichi's roommate got drunk last night. After dinner, he returned to his room and fell asleep. He slept until he was woken up this morning. He had no idea what happened last night."
“Mad!”
Punching his fist on the ground, Kidd said angrily:
“It would be nice if there were surveillance cameras in the hotel!”
"Don't be impatient."
Sakaki Makoto said:
"As long as we can determine the criminal's crime scene, the case will become much simpler... Ai, you just said that the only places in the hotel where no traces will be left are the rooms and the bathrooms?"
"Look at his fingers, they are so clean, and he was wearing a bathrobe. He must have been killed before or after taking a bath. In other words, these two places are easy to clean, right?"
Bang!
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! All we need to do is have the police check Naoki Seiichi's room and the hotel bathroom!"
After discussing the case to this point, it was necessary to conduct an on-site investigation. Kid told Kyokichi Ishimoto the results of the discussion. Ishimoto immediately asked someone to bring out the luminol reagent on the spot and went to Naoki Seiichi's room.
With the curtains drawn, Naoki Seiichi's room fell into darkness. The police officers put on masks and used small spray bottles to evenly spray luminol reagent into every corner.
Soon, spots of blue fluorescence appeared on the tatami. Ishimoto Kyokichi's eyes lit up, and he quickly asked someone to record the location where the fluorescence appeared.
After the test, Kyokichi Ishimoto had blood traces extracted from the tatami for DNA comparison.
but...
The result was surprising, the match failed!
The blue fluorescence in the room was not left by Naoki Kiyoshi!
Everyone looked at each other, feeling a little ashamed.
You should know that the luminol reagent not only reacts with blood, but also with excrement, and the light emitted is the same.
In other words...
The bright blue light in the room could be...hmm.
Just as everyone was about to head to the bathroom for the next test...
"Wait a moment!"
Everyone looked back in confusion and found that Sakaki Makoto had lifted up a piece of tatami at some point, picked up a small spray bottle, and sprayed the bottom of the tatami twice.
yes!
Everyone was excited to find out that tatami is double-sided!
The criminal may have turned over the tatami after committing the crime to avoid detection by luminol reagent!
“No fluorescent reaction.”
After a while, Sakaki stood up and threw the small spray bottle back to the policeman beside him:
"Leave some of you to check the other rooms, and the rest of you follow me to the bathroom."
Since Kiyoshi Naoki was not killed in his own room, the possibility of him being killed in someone else's room is even smaller. However, no matter how small the probability is, it is not impossible, and the most basic testing still needs to be done.
The highlight is the bathroom.
The bathroom was filled with mist, the feet were slippery, hot springs were gurgling in the pool, and a faint smell of sulfur was floating in the air.
The bathroom was empty at the moment, which was convenient for testing.
Turn off the lights, close the water gates, and start the fan. The mist in the bathroom quickly dissipated. Once the floor was slightly dry, the police immediately began spraying luminol reagent.
"If the criminal killed Naoki Seiichi in the bathroom, could he have just washed away the traces with the faucet?"
A police officer asked:
"Will luminol be 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 hemoglobin 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 the elements of the blood are not destroyed."
"I heard that some prisoners would use bleach, detergents and other things to disrupt the detection of luminol reagents."
"Indeed, it can, but you also said that it is just interference. Once the effect of the bleach wears off, traces of blood can still be detected. Besides..."
Looking around, Conan curled his lips:
"At 12 o'clock at night, after the hotel closes, it is like a secret room. The criminal must have committed the crime in the hotel. If he killed Naoki Seiichi not in the room or the corridor, then it must have been in the bathroom."
During the conversation, the police had already sprayed luminol reagent in every corner of the bathroom. The strange thing is...
The room was still dark, with only some dark blue fluorescence on the wall. It was not blood at all, but something like detergent.
"this..."
Seeing this, Conan was dumbfounded, with a look of shock on his face.
How is this possible? !
"Did the criminal really completely eliminate the blood residue?!"
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