Chapter 29 Section 7

"Isn't it too sudden for you to say that?" Fujimura said, his voice trembling. "Really? At least you think so." "Can you see what's going on in my head?" "If this is not the case, there is no way to explain your words and deeds. For some reason, you suspect that Yusuke-kun may be the murderer. But there is a problem, that is, Yusuke-kun has an alibi to prove it, and you are the last It is clear. Because when Yusuke-kun arrived at the hotel, Mr. Haraguchi’s room was already in a secret room. After that, except for the ten minutes of bathing, Yusuke-kun was always with other people. Although the police believed it These testimonies can rule out the possibility of the murderer, but the key point is that you have been muttering in your heart, so you came to me for help. But you miscalculated. You thought it was just to solve a physical method, and there was no need Tell me the details of the matter. However, you found that I was always pestering your wife for questioning, and Yusuke-kun was involved, so you panicked and told me that there is no need to solve the mystery of the secret room, because you think Maybe I will reveal all the secrets."

Fujimura felt his heart beat faster: "Then how do you explain that incident? I should have told you that when I went to check for the second time, I felt someone in the room." "That was fabricated by you. What you did was just laying the groundwork so that you can deny the possibility of murder after I uncovered the secret room technique. Am I right?" Fujimura stared intently at Yukawa's upright and handsome face. His old physicist friend was so calm that it was hateful at the moment. "I already know how rich your imagination is. Stop circling around and explain the mystery of the Chamber of Secrets."

"Do you have anything to refute my previous reasoning?" "There are too many, so much that I can't figure it out. Anyway, I'd better listen to you and finish everything first." "Okay." As he spoke, Tang Chuan walked to the window, "on the day of the incident, Mr. Haraguchi left the window immediately after entering the room. Probably he made an appointment with someone. It is very likely that the other party instructed him , Let him leave the room through the window. For this, the other party only needs to say that they don’t want people to see them meeting secretly. The meeting place is probably the scene of the cliff fall. I don’t know if the murderer was in ambush in advance, or When I went there later, I took advantage of him not paying attention, but it was not difficult to push Mr. Haraguchi who was careless from behind."

"Wait a minute, then you mean that the murderer..." Fujimura swallowed, and continued, "Yusuke killed Mr. Haraguchi before he came here?" "That's the only possibility. Afterwards, Yusuke came here, entered the room through the window, locked the door, put the chain on it, and after a few more moves, he left the room through the window." "Move your hands and feet?" "It's not a big move. It's just pasting a prepared photo on the crescent buckle lock." "photo?" "The crescent lock looks locked, but it's actually a photo."

"Just talking nonsense." Fujimura illuminated the crescent lock with a flashlight.As soon as the light moved, the shadow of the crescent lock also moved. "Where is this photo?" "Then try opening the window." "No matter what you say, the windows are locked anyway..." He pushed the window aside as he said, but the window was pushed open by him all at once.Fujimura was speechless, and once again shined the flashlight on the crescent lock, only to see that it was still locked. Just when he was about to say "what's going on", he suddenly realized the true face of what he had seen before.

That is a photo.What he always thought was the real crescent lock was actually a photo that was a circle larger than the real thing, but it was not an ordinary photo. "This is a hologram." Tang Chuan said, "It can record three-dimensional images, which is the so-called stereoscopic photo. Haven't you seen it before?" Fujimura tore off the photo and took photos from various angles with a flashlight.Due to the different angles of light incident, the picture sometimes becomes blurred and sometimes discolored. "This kind of thing, where are you..." "I made it in the laboratory of the school today. There are many kinds of holograms, and this method uses a method called ''. Although usually holograms need to be visualized with laser light, this one Even the light of a flashlight makes it come alive in three-dimensional images."

"You mean, Yusuke made the same thing?" "I think it's much easier for him to do it than for me. After all, he has all the equipment." "What do you mean by that?" "Didn't you tell me about the art museum? The number of exhibits is one of the few in the country, but its space is less than one-third of the usual size, and it is said that the security system is foolproof. I thought of it when I heard it." They may be using holograms. This method of displaying valuable artworks as holograms has recently attracted the attention of the world. Since it is just a photo, it does not need much space, and it does not need to I'm worried about being stolen. Besides, it looks almost the same as the real thing, and the visitors will not be dissatisfied. This is completely multi-purpose. Therefore, I ran to meet with Yusuke-kun and asked him for details. And he told me very seriously. He is such a young man full of vigor. He probably never imagined in his dreams that I did this to solve the mystery of the secret room. Although I still feel very sad when I think about it."

Fujimura looked carefully at the hologram in his hand again.Even though he knew it was a photo, he still had the illusion that he was holding a crescent lock. "There are a few conditions that make a hologram look sharper. The most important thing is that there is no excess light around. And using a flashlight in a dark environment is ideal. In addition, the light entering the The angle is also very important, so Yusuke-kun had to hold the flashlight at that time." "...That's what happened." "And you couldn't open the window at that time, probably because he used something like a stick to insert it into the window frame. In this way, all the mechanisms of the secret room were completed."

"But later I found out that the window was open? Is this..." Halfway through the conversation, Fujimura found the answer by himself, "Is it the ten minutes when Yusuke went to take a bath?" "Come out of the bathroom window, remove the stick from the window, and retract the hologram—if there's ten minutes, I think it's more than enough. But then he didn't have time to soak in the tub, so he took a shower out of the shower." "How do you even know this?" "Didn't Nagasawa Kodai-kun, who was staying here that night, write this in his notebook, saying that when he took a bath, there were many small bubbles around him, and he felt very comfortable. This is because the air is dissolved in the water. The water The lower the temperature is, the more air is dissolved in it. The water temperature in this season is colder, so there is a lot of air dissolved in the water. If the water is boiled, the air that was dissolved in the water before will become bubbles and come out This phenomenon is called 'supersaturation'. The reason why many small bubbles appear around the body after entering the bathtub is because the air that was finally dissolved in the water before was stimulated by the outside world and all of them popped out at once. Yes. I didn’t think about it that much when I first saw the paragraph in the notebook, but after listening to your description, I felt something was wrong. If Yusuke-kun had already taken a bath before Nagasawa Ko-dai-kun , then the supersaturated state should have ended, and theoretically there should not be so many bubbles.”

Listening to Yukawa's light narration, Fujimura smiled slightly.He was laughing at himself.He now knew that it was a big mistake when he asked this person to solve the simple mystery of the secret room. "Do you have anything else to refute?" Tang Chuan asked. Fujimura shook his head.He was exhausted physically and mentally now, so tired that he didn't even bother to shake his head. "I've convinced you, it's perfect. I didn't expect you to analyze it so thoroughly." "I declare in advance that I don't have any evidence in my hands, and it may be regarded as pure fantasy."

"No, I'm afraid your reasoning is correct. I'm sure of it now. I'll persuade them both to surrender." "Are they...your wife and Yusuke-kun?" Fujimura nodded: "I overheard the two of them discussing this matter on the phone. To be precise, I just heard Kuniko say 'Haraguchi said he wanted to come here, what should I do'. But Just hearing this sentence, I can roughly understand what's going on. I guess this Haraguchi is a former customer of Kuniko, and he came here to ask for trouble." "A former customer? Is it from the tavern in Ueno?" "No. When she was young, Kuniko had a relationship with several men at the same time and got some money from them. To put it bluntly, it was selling her body. A young woman with no one to rely on, and at the same time she had to support herself and her children. It is not difficult to imagine that she had no choice at all. The former guests I mentioned refer to those people at that time. But Jiu Renzi thought that I knew nothing about her past. " "Then how do you know?" "No matter where you go, there is no shortage of good people in this world. A person who once sat on the stage with Jiurenzi told me quietly. At that time, Jiurenzi was pestered by several men, and the lady on the stage also said gone." "Could it be that you resigned and left Tokyo..." "Kuniko was afraid that I would be involved, so she couldn't make up her mind to marry me. So I thought that leaving Tokyo might reassure her. But in the end, running a hotel has always been my dream." Tang Chuan's expression became gloomy, and he lowered his head. "When I learned that Haraguchi disappeared from the room and never came back, I had an intuition that the two of them killed him. I also thought about telling the police, but I really couldn't. I I hope the two of them will turn themselves in. And I still have some doubts in my heart whether it is really the two of them." "That's the Chamber of Secrets." "That's right. It was the secret room that supported Yusuke's alibi, and I was the witness. To be honest, I used to worry about how I should treat this fact. But now, I'm also enlightened. I Don't hesitate any longer. They are the murderers." "Then why would they do it?" "It's probably because Kuniko was threatened by Mr. Haraguchi. For example, if you don't want people to know what happened in the past, you can get money. Didn't I tell you that Haraguchi was in a lot of debt before he was alive, maybe Haraguchi also had before. Blackmailed her several times." Tang Chuan frowned in pain: "Very likely, the motive for killing is understandable." "Even so, murder is not allowed." Fujimura said firmly, "I will tell them both, and I plan to tell them that I will wait for them to be released after serving their sentence." Yu Chuan pursed his lips, nodded, then looked at his watch and said, "It's almost time for me to go." "yes……" The two returned to the place where the taxi was parked.Yukawa, who sat in the back seat of the car, looked up at Fujimura through the car window and said: "I'll come again, call Kusanagi too." "Two big men? It's boring." "Among Kusanagi's subordinates, there is a female policewoman who looks quite strong, and I will call her when the time comes." (The typewriter said to himself: Does this indicate something?!) "That's pretty exciting." "Goodbye." After saying that, Tang Chuan closed the car window. Fujimura watched the taxi gradually go away.After watching the taillights of the taxi disappear into the darkness, Fujimura returned home. He went into the kitchen and took a bottle of red wine from the shelf.This is Kuniko's favorite brand.He put the bottle and two glasses on a tray, carried them into the lounge, uncorked the bottle carefully with a corkscrew, and poured it into a glass. At this moment, the sound of a car engine came from outside the door, and it was Kuniko who came back in a commercial vehicle. Fujimura also poured red wine into the other glass. -------------------------------- Note: