After some interrogation, Kogoro Mori basically figured out what happened to the incident.

During his lunch break, Takasugi Yuto was killed by the murderer in the seminar room, and the first person he found was his girlfriend Rin Suzumura, who came back to bring him food.

Later, Takashi Kizuro, who was cleaning the air conditioner in a nearby corridor, arrived and called the police, and shortly after, Meguroto and their mentor Kunimatsu Shugo also returned from the cafeteria to protect the scene from destruction.

And throughout this process, Mori Kogoro has noticed a suspicious point.

"I see! I get it completely! ”

In the makeshift lounge, after careful consideration, Mori Kogoro suddenly shouted loudly.

"W-What?!" Wataru Takagi on the side suddenly exclaimed, "Does Mr. Mori already know who the murderer is?" ”

"Ah, this isn't ...... yet" Touching his head a little embarrassed, Mori Kogoro then said with a serious face: "However, I have already cracked the murderer's murder method!" ”

"Huh?"

Conan, who was still pondering, also looked at it curiously.

[Uncle, don't you ......]

"The murderer's modus operandi is simple!"

Standing up from his seat, Mori Kogoro said calmly with a confident smile on his face:

"The murderer must have killed the victim with some kind of special poison, and as for the way of poisoning, it was the oxygen cylinder that the victim often used before his death!

That oxygen cylinder was actually a poison gas cylinder that had been quietly dropped by the murderer! As long as you put poison gas that can cause respiratory failure in it, and force the victim to inhale the poison gas during the lunch break, you can kill the victim without incident! Wowha! ”

"Ha, haha......" Conan suddenly turned out a dead fish eye after listening to this reasoning.

"Hara—Did you do that?"

Hearing this, Takagi had a puzzled expression on his face.

"Well, I'm sorry, Mr. Maori...... On that oxygen cylinder, we didn't detect a toxic reaction......"

"Huh?"

Mori Kogoro's laughter came to an abrupt end.

"This is a report just submitted by the forensic department, and there is no toxic reaction at all on or in the oxygen cylinder."

"Ah, this, that...... I think it should be, it should be the murderer who eliminated the traces of poison after the fact! Right! That's it!

Suzumura-san: You've said that before, right? After they left, there were signs that the oxygen cylinder had been moved! It must have been the murderer who let go of the remaining poison gas in the bottle after committing the murder! It must be so! ”

[How is this possible......]

When Conan heard this, he sighed helplessly, and couldn't help but speak:

"Now, uncle, the doors, windows, and curtains of the seminar room are always closed, aren't they? If the murderer put the poison gas into the air, then the sister of Suzumura, who was the first to open the door, should also inhale a small amount of poison gas, right? ”

"Uh, this, that...... Ahem. Asked by Conan and had nothing to say, Mori Kogoro could only sit back with an embarrassed face.

Although his reasoning is full of holes, Conan did notice the point he mentioned in his words.

It's the oxygen cylinder.

According to Rin Suzumura and others, before they left the seminar room, the oxygen cylinder was thrown directly to the ground by Yuto Takasugi, who woke up and fell asleep, but when they returned from the cafeteria, the oxygen cylinder was placed on the coffee table.

Ruling out the possibility that Takasugi Yuto woke up in the middle of the way, this oxygen cylinder with different positions before and after should have something to do with the murderer, and it is even very likely that it is one of the key means for the murderer to cause Takasugi Yuto to suffocate strangely.

[Let's take a look in the seminar room again, there will definitely be some clues there.] 】

With this in mind, Conan quietly got up, left the break room, and returned to the seminar room.

At this time, in the seminar room, because the police had basically completed the investigation and evidence collection at the scene, and Takasugi Yuto's body was also removed, the police did not continue to lock down the place, and Conan walked in easily.

"Huh?"

As soon as he entered the research room, Conan noticed that there was already someone inside.

"Sister Suzumura?"

In the room, Rin Suzumura stood in front of the desk that was littered with garbage underneath, looking gloomy.

Hearing Conan's voice, she looked back with some surprise in her eyes.

"Little brother, why are you here?"

"Ah, it was Uncle Maori who asked me to come back and investigate the scene again to find out if there were any clues missing...... Sister Suzumura, why are you here? ”

Very skillfully pretending to be a schoolboy, Conan stepped forward and looked up at her, and asked in a cute tone.

Rin Suzumura, although this person is Takasugi Yuto's girlfriend, he has a major suspicion in his own right.

First, she was the first person to discover the scene.

Second, in the oral complaint of Meguro and Kunimatsu Shugo, after they returned to the seminar room, Rin Suzumura was holding the body of Takasugi Yuto and crying.

If she is the murderer, then she herself has great conditions for the murder and a chance to clean up the scene afterwards.

"I ...... I want to come and see Yuto......" was stared at by Conan, and Rin Suzumura replied.

"Huh? It turns out that this table and chair belonged to Brother Takasugi's? When Conan heard this, he looked at the table and chairs in front of him that were full of garbage, and asked in surprise:

"It looks so dirty, these garbage heaps are everywhere, and Brother Takasugi doesn't usually clean them?"

"I've also told Yuto before that I wanted to help him clean up yesterday, but he stopped me......

said that he was no longer a child and would clean his own things, but in the end he was too lazy to do anything...... Really, it's not worrying at all......"

"Rin Suzumura" said this, and his face showed that sad and sad complex expression.

For Shui Wulian, this level of performance can be regarded as handy.

From yesterday to today, she has been disguised as Rin Suzumura for two days.

After just two days of observation, she vaguely determined one thing.

It's likely that Takasugi Yuto really has something hidden, and it should be in this pile of garbage.

This is not a random speculation by Shui Wulian.

When she had just returned to the seminar room yesterday in place of Rin Suzumura, she remembered that Takasugi Yuto was rummaging through this pile of garbage, looking flustered.

And in the evening, when she offered to help Takasugi Yuto clean up the garbage, he also strongly refused on the grounds that he could clean it.

If it were someone else, they might not take it very seriously, and at most they would complain.

But Mizuno is different, she had been warned by Regel before this operation, and it is very likely that Takasugi Yuto has information about the identity of Owada Mitsuto.

Therefore, after noticing these unusual behaviors of Takasugi Yuto, she is keenly aware that there is a high probability that there is something hidden in this pile of garbage.

(﹃)

(End of chapter)