When I came to the door of the data room on the fourth floor again, Mu Zihan's performance was finally much calmer than before, and I saw that although he opened the door of the data room with the key, he did not rush in immediately, but first carefully studied the door lock specially customized by Uncle Chen. After studying the lock, the pen and the fun pavilion www.biquge.info ran to the window that he had smashed by himself, and stood there looking at the data room in a daze.

"What's wrong? What did you find? I saw that the time had passed for a while, but Mu Zihan was still standing motionless, and couldn't help but step forward and ask.

"Siyuan, you say, if this glass window is still intact, can it really be so simple to see the situation in the data room through the glass?" Mu Zihan asked thoughtfully.

"I don't know. When I first came up, I didn't even have time to look, and I was pulled by Wei Hung to bang on the door, and then you broke the glass window, so I didn't even know what the glass looked like when it was complete. I replied.

"Oh. Because, I was also a first-aid Uncle Chen at that time. In fact, looking back now, I vaguely saw at that time that there seemed to be a humanoid object hanging under the chandelier in the reference room, and then I heard Liu Chiming and they said that it was Uncle Chen, and my thoughts were already confused. Then I saw that the two of you couldn't open the door for a long time, so I was even more anxious, and without thinking carefully, I turned around and went to the room to move a chair, and smashed the window directly. Mu Zihan recalled that after calming down, he blamed himself a little for his recklessness at that time.

But then, he continued: "In the corridor of this villa, Uncle Chen and they are all installing sensor lights. So, whenever you hear footsteps, the lights will turn on on their own. Then, the dark data room, with the bright aisles, the transparent glass windows that were originally separated in the middle, were actually close to a mirror that could only reflect the aisles at that time, and at most you could only see the situation in the data room vaguely. In this case, how did the aunt find out that someone was hanging inside, and they were so sure that it must be Uncle Chen? After all, in addition to the previous vague factors, there is also a row of tightly arranged bookshelves between the place where Uncle Chen is hanging and this window. Only in a limited area of less than 1 meter before and after, can you see Uncle Chen's body at that time, if it weren't for knowing the location in advance, I really can't believe such a coincidence, it seems that it is necessary to ask the aunt again, who first found Uncle Chen's body? ”

According to Mu Zihan's words, although the glass resting in the middle has disappeared at this time, it is indeed as he said, only by standing in his position at the moment can he see the location of Uncle Chen's body through the gap between the bookshelves, and I can't help but guess: "Maybe I'm worried about Uncle Chen, so I look more carefully." After all, we had speculated before that Uncle Chen was in the data room. ”

"You're right, but there's another thing I'm wondering." Saying that, Mu Zihan's white-gloved hand stroked the window frame that no longer had glass and said, "Siyuan, don't you think that this glass window is too neatly broken?" I was smashing the window glass with a stool, and in that case, it would have been a big hole in the middle of the window. After all, judging from the broken glass on the ground now, the glass of this window is not the kind of glass that can be used like a car windshield. So, why is there not even a bit of broken glass left on the window frame? In this case, it was not so much that I smashed it, but more like after being hit by me, the whole glass broke away from the window frame and fell to the ground and shattered. Moreover, the most suspicious thing is that since Uncle Chen deliberately customized such a strong door and lock, why is the glass of the window so fragile? This seems too counterintuitive. ”

"You mean, in fact, this window has been stolen and replaced?" I finally understood why Mu Zihan didn't rush in, it turned out that he was already thinking about the secret room method of this case, so he added: "Will you put the cart before the horse?" If Uncle Chen committed suicide, then in fact, there is no modus operandi at all. ”

"No, I can tell you for sure now, Uncle Chen must have been killed by him." Mu Zihan explained: "I have checked the door lock just now and found that there are no fingerprints on the inside of the door lock. Don't you think it's weird? If Uncle Chen committed suicide, how could he close the door and lock it from the inside without leaving fingerprints? Of course, if Uncle Chen was wearing gloves at that time, it would be a different matter. ”

"However, I had searched almost all the cabinets and drawers in the data room to find the key, and I didn't see the gloves. Therefore, it can only be explained that the fingerprints on the door lock were disposed of afterwards. Maybe it was to clean up the traces that he had been to this data room, but he even cleaned up Uncle Chen's fingerprints. Finally, and most importantly, there is a doubt. Speaking of this, Mu Zihan paused, took out the key to the door of the data room from his pocket again and said, "Even this key does not have any fingerprints. Don't forget, this is the only key that can open this data room, and it has always been carried by Uncle Chen, why is there no Uncle Chen's fingerprints on it? Even, I found this in the drawer, not on Uncle Chen's body. ”

Seeing that Mu Zihan said the Tao, I have been listening quietly to the analysis, and I feel that after regaining his composure, he has indeed regained his excellent reasoning ability. After listening to him the whole time, I barely had a chance to interject, let alone any loopholes for me to refute. The only thing that makes me wonder is how he checks the fact that there are no fingerprints on the door lock and key, is it just the small ultraviolet lamp the size of a tail finger that we usually use to check the authenticity of banknotes?

"I see, then it seems that Uncle Chen was really killed, then this is a closed room murder case. By the way, how do you detect if there are fingerprints on an object? After all, the police haven't arrived yet, is your test reliable? I asked.

"Murder in a closed room, it's just a gimmick, don't pay too much attention to these, as long as it's a crime committed by a person, it can never be perfect." Mu Zihan said with a disdainful smile, then pushed open the door, walked into the data room, and then replied: "As for fingerprint detection, rest assured, although the tools are simple, they are absolutely reliable." Siyuan, do you know the four most common ways to check fingerprints on objects? ”

"Four ways! The four? I was aroused by Mu Zihan's interest, and asked while walking into the reference room.

"The iodine vapor method, the silver nitrate solution method, the organic chromogenic method, and the simplest spectroscopy method that I have been using. Specifically, you can check it yourself when the time comes, or you can ask Fang Ling, she should know. Mu Zihan replied as he took out his own mobile phone and handed it to me, adding, "Okay, now is not the time to talk about this." Siyuan, I have already taken some of the previous photos and stored them in my mobile phone, and you can retrieve them and send them to you for summary. Then, you take another photograph of the scene and the existing exhibits. ”

"Oh!" I took the phone from his hand with a promise, and saw that he had already concentrated on examining Uncle Chen's body again, and couldn't help but smile on his face, Mu Zihan finally completely recovered to the black-bellied detective I knew.

(To be continued)