Once you find the key point, it's easy to connect everything together, which is actually not very clever. It just takes advantage of people's psychological blind spots.

"Inspector Megure, I almost know what's going on." I pushed my glasses and took a step forward to face the side window. The breeze blowing in from the window made the corners of my clothes flutter. Half of my body was hidden in the shadows, making me look very cool.

This is the location I deliberately observed.

"W-what?! Do you already know?" Inspector Megure's reaction was very exaggerated, which was the classic reaction of the detective after solving a case.

I nodded reservedly, and seeing that there seemed to be a flash of fear in Mrs. Yamashita's eyes, I became convinced of my guess.

"Although we only had a quick meeting yesterday, I noticed that Mr. Yamashita and his wife had a very close relationship. There was no quarrel at all, right?" I didn't make too many cryptic comments. I just wanted to finish the case as soon as possible. After all, I had another guess in my mind that I wanted to verify. "So the so-called separate rooms is actually a step, a step to eliminate suspicion."

"What do you know about intimacy? Not every quarrel between a couple is the same as you imagine!" Mrs. Yamashita said stubbornly, "What suspicion are you talking about? Would I hit my own husband?"

Hey, don’t tell me, there are too many cases of couples fighting each other in Conan. The closer the relationship, the greater the suspicion.

I didn't respond to her, but just kept talking to myself, "Madam, you didn't sleep all night last night, your eyes are full of bloodshot, are you too nervous? From the beginning, your fingers were unconsciously crossed, which is a manifestation of nervousness. After your husband's death, you can have many manifestations, but nervousness should not be one of them."

"Although you haven't removed your makeup since last night, your lips are the only ones that look so "clean". I remember when I saw you yesterday, your lipstick was quite bright, but the color of your lips was not as light as I imagined. It looked like it had been ravaged and had obviously been cleaned up. And just now, you were unconsciously trying to lick your lips but you stopped abruptly. You must have realized something."

I approached Mrs. Yamashita and gently touched her lips with my finger. "Yes, you are afraid. You are afraid that you will be killed by your own methods."

She didn't look up at me, but her constricted pupils told me what she was feeling. Mrs. Yamashita opened her mouth, but no words came out.

"It was a fatal kiss. Before you and Mr. Yamashita parted ways, you kissed him on the lips and left the poison on his lips. And afterwards... even a stranger like me could see that Mr. Yamashita had a habit of licking his lips and even biting his lips when he was nervous. As his wife, you wouldn't tell me. You don't know, do you?" I slid my fingers from her lips to her chin and then pushed upwards, forcing her to look me straight in the eye. "Mr. Yamashita should have eaten most of the evidence on his mouth, but the lipstick stains left at the corners of his mouth should still be detectable. More importantly, did you clean up the lipstick stained with poison? Did you throw it in the smoking room or flush it down the sewer?"

"Liquids and lipstick paste can be cleaned using the sewer system, but you may not know, Mrs. Yamashita, that if the metal tube of the lipstick is stained with poison, it is very difficult to clean it. Even if it is rinsed, it can still be detected. People like you must have been very nervous in the past few hours, because you don't know when the body will be found, so I guess you didn't dare to leave the hotel at all. Today is not the time for the hotel to dispose of garbage. It is only a matter of time for the police to find the lipstick tube you threw away."

Having said this, Mrs. Yamashita's body suddenly seemed to lose its support, and she slowly knelt down on the ground, tears flowing even more profusely than before.

The sound of sobbing grew louder and louder, and she was choking up and could hardly speak. "No matter what, I can't accept the fact that Hao Tai cheated on me."

Here it comes, first cry, then kneel, then repent!

"Not to mention, she was with another man!" Her voice was filled with resentment. "Why is it like this? Even though I wanted to come clean and tell him, Hao Tai just fiercely told me to ignore it and break up if I don't like it! He also kept saying that he wanted to protect me, but he just dragged me along and checked into a room with other people!"

"I really can't accept it..." She sobbed twice and looked at me with red eyes, "I'm sorry, when I saw you coming out of his room, I thought you were his lover too. I don't regret it - I don't regret it!"

Everyone was shocked. They didn't expect this seemingly honest man to do such a thing.

But I turned around and looked at the door of room 1406.

No, lying is easy, but some subconscious body movements and micro-expressions are hard to fake. Maybe Mr. Yamashita really wants to protect Mrs. Yamashita...

I didn't continue. Gao Mu originally wanted me to help him make a detailed record. I thought about it and just said that I would go to the police station to make up the record in the afternoon. Now I wanted to go back to my room to clean up.

After all, I was not a criminal and I helped the police solve the case. They trusted the detectives very much, so they did not bother me. The hotel manager also refunded my room fee and gave me part of the money, saying it was compensation for the fright I received.

Yes, although Mr. Yamashita did not live in room 1406, it can be considered the room of the deceased after all, and most people would still find it uncomfortable.

I went back to Room 1406 under the pretext of packing my things.

After locking the door, he carefully checked everything in the room, not even leaving out any corner.

Soon, I found eavesdropping devices under the bed, in the vents, and in the sockets behind the TV.

Don't ask me why I know what a bug looks like. It's just the basic skill of the omnipotent Jingguang.

I carefully recalled my actions last night, then stood up and stretched, saying, "This is so annoying. Why does a stranger's death have to be linked to me? The thought of staying in a room like this for a night makes me feel horrible. I'd better pack up and leave quickly."

There is no need to remove these wiretaps. Doing so would only prove that there is something wrong with me.

But seeing these things made me more and more certain that it was not a coincidence that the suitcase fell apart and my card was knocked away last night.

Although it was probably a spur-of-the-moment decision, Mr. Yamashita undoubtedly gave me his room card on purpose. He wanted me to move into the room on his behalf.

Even if I found out halfway, it didn't matter. He just had to say that he accidentally took the wrong card and he could have gotten away with it. The rooms on this floor are of the same specifications, and he and I both just moved in, so we were both staying in new rooms, so there was no difference between the rooms themselves.

Even if I found out later, I probably wouldn't bother changing it because of the early morning.

I left the room with my suitcase.

Mr. Yamashita's reaction and nervousness last night may have been partly due to the fact that he was about to change the room card to me, but more of the nervousness came from what he already knew was about to happen.

Or maybe you are afraid of meeting someone.

According to what Mrs. Yamashita said, her husband always went to the hotel to rent a room with men. What if this was not cheating, but there was another reason?

Choosing a hotel that places such great emphasis on privacy, there must be something as secretive as possible happening.

Nervous - No, Mr. Yamashita is no longer nervous. He wants to change the room door card because he is afraid.

He is afraid.

Another thing that doesn't make sense is that the things scattered on the ground just now are in a different position than what I saw last night.

There were only two possibilities - either he had packed up his things and then the poison took effect, and then he took a few steps forward and fell to the ground, so things were messed up again.

But there was a bug. He actually cared about the suitcase very much, so he held it tightly all the way. There was a lock on the suitcase, but he deliberately unlocked it to prevent the things from falling out, all in order to mix up the room cards. The private things of the lady inside made it impossible for me to take them myself, so only in this way could Yamashita ensure that he could hand me another room card.

But his plan had already succeeded. If the thing fell out of his hands the first time he bumped into me in order to cover up my room card on the ground, then he should have subconsciously locked the suitcase when he put the things away the second time, so that even if he fell, the things would not fall out. But if the poison took effect before he had finished packing up his things, those things would not have moved obviously.

This brings us to the second possibility, that someone else opened the suitcase again.

There were no signs of a struggle, so this behavior was most likely after Yamashita's death. This possibility leads to two further scenarios.

One possibility is that Yamashita locked the suitcase and someone came to rummage through it, but if that were the case, the least noticeable way would be to recreate the scene or at least put the items back in the suitcase.

This group of people whose purpose is currently unknown obviously wants to keep a low profile.

That is the second situation. Mr. Yamashita was poisoned before he could finish packing up his things, and the movement of these things was caused by human factors.

Someone had searched among these scattered things, and because the items were large and messy, after confirming one item, they had to put it in another location to ensure that all the items on the ground were checked completely. It was precisely because of this that all the items had traces of being moved, and it was obvious that they were moved in a certain direction.

Even the clothes he wore down the mountain had changed a little. Although they were not messy, there were some subtle differences from when I saw him in the early morning.

After finding these things, you still have to turn over the body.

...Not found.

There must be something missing.

I figured that since Yamashita valued the box so much, the things were probably hidden in it. He scolded Mrs. Yamashita because he didn't want her to get involved. He was in danger himself, so he wanted to use me as a scapegoat to live in his room.

So the stuff won't be on him.

I didn't hear any noise when I fell asleep, which means no one came. Or maybe someone wanted to come, but stopped at the elevator entrance.

The person they wanted to attack was already dead. Mr. Yamashita, who obviously had not entered the room, naturally only needed to search his personal belongings. There was no need to go to a place that Mr. Yamashita had never even set foot in.

The so-called elevator monitoring damage is probably not an accident.

The question now becomes what that thing is that is missing and where it is.

The poison took effect very quickly down the mountain, so there was no time to hide.

It must be nearby.

Searching for bodies was a last resort, so the area must have been thoroughly searched, but to no avail.

I walked out of the room and found that the area around the sealed elevator had been cleared by the police. I pressed the down button and the elevator door opened.

Where exactly is it?

As I watched the elevator door slowly open, I suddenly remembered the sound of Mr. Yamashita's things falling.

The sex toy seemed to be broken, and there was only a slight delayed sound!

So that's how it is. If that's the case, the thing should still be there.

Come on, let me see what it is that almost got me into trouble.