"Murder in a closed room?" Nakamura frowned, "Why is it such a nerve-wracking case, and this case is more complicated, because in the previous cases, we just didn't know how the murderer entered the room to commit the crime, but we still confirmed that the murderer had entered, but what we know about this case is that no one has entered this room before and after the crime." ”

"That's right, this is indeed a very difficult case, arguably the most difficult case I have ever taken on since I became a police officer." Watanabe nodded.

"Fortunately, we have the dawn of hell, but there has never been a case that our section chief can't solve." Nakamura looked at me with a relaxed face, who had always frowned and pondered.

"It's just why the section chief seems to feel heavy." Nakamura scratched his head.

"The deceased is the section chief's neighbor, and the person who has been watching it a lot no matter what, has now turned into a cold corpse, and anyone can be touched." Watanabe sighed.

"Let's talk about the case, how this broken mouth was caused." Nakamura looked up at the black hole that looked like an abyss on the floor-to-ceiling windows.

"It should have been caused by a round-headed blunt object, but we didn't find it in the house, and the murderer should have thrown it from the broken hole after smashing it."

"Isn't there a balcony down here? Have you found the tools to commit the crime? ”

"No, I guess I lost it somewhere else."

"But why did the murderer smash this smash in this floor-to-ceiling window." Nakamura said puzzled.

"I don't know at the moment, but it can't be used to escape anyway." Watanabe shrugged.

"Anyway, now that is to say, the murderer did not enter this house through this main entrance before and after the crime, so how did the murderer enter this house, I really don't have a clue." Nakamura scratched his head, and suddenly he blinked, "It is impossible for the murderer to have wings, or to be able to fly like a superhero, could this actually be a suicide?" ”

"How can this be suicide, how can the wounds on the deceased's head, and the strangulation marks on the neck of the deceased's son?" Watanabe said.

"It can't be a suicide." I said, "This is a very obvious case of homicide, and I wonder now if the murderer will enter the house by the time I go to the deceased's house." ”

"Section Chief, were you here before the crime?"

"Yes, it's about half past seven, because of the power outage, I was a little worried about their mother and son, so I wanted to come and see, but when I came to the door, I heard a noise in the house, as if something collided, and then when Chiyoko opened the door, I saw her eyes flustered, her clothes were a little messy, at that time she said it was to fight cockroaches, so I didn't care, but now I think about it, maybe the murderer was already in the house at that time, I also sat in the living room with Chiyoko and chatted for a while, At that time, Zhengtai was sleeping in the room, and I came to the front of the room because I went to the bathroom, but I was afraid that he would not enter the house because of the noise, in fact, maybe the murderer was staying in the room at the time, and was kidnapping Zhengtai, if I had gone in at that time, maybe this would not have happened. I sighed, regret on my face.

And Nakamura and Watanabe glanced at each other, and swallowed at the same time, only to feel a chill on their backs, and anyone who heard this matter would be afraid for a while.

I walked to the back room, walked into Zhengtai's room, Zhengtai's room is very tidy, under the dim light, it looks a little gloomy, there are a lot of homework books on the table, Zhengtai should be sitting here to write homework when he comes back from school, I turned around and walked into the utility room, there are a lot of items here, my eyes stayed on the curtain in front of me, after a long time I turned around, my left foot suddenly hit something, I looked down and saw that it was a toy pistol, this is Zhengtai's toy, I saw Shota holding the toy gun in front of my eyes, and I couldn't help but sigh and bend down to pick it up and put it on the table.

I turned my head to look at the back of the bed, where there was a closet, and my eyes narrowed, if there was a murderer in this room at the time, the murderer must be standing next to this closet.

I walked out of the room, past the storage room, into the kitchen, where there were two large dishes and a few small dishes in the sink, and there were toothbrushes and towels for adults and children in the bathroom, and there were traces of their mother and son everywhere, and I suddenly realized that until now I could not believe that the woman I loved so much was dead.

I went back to the living room to find the technician reporting something to Nakamura, who was frowning.

"What's wrong?" I stepped forward.

"Oh, section chief, there's a very strange thing here, just now the technician collected fingerprints from the entire house, and couldn't extract a single fingerprint."

"What?" I frowned as well.

"In addition, the technicians found a lot of black powder left in the house, after analysis this is pencil head powder, the main ingredient is graphite powder, and we all know that one of the powders that can make fingerprints current is graphite powder, that is to say, the murderer accidentally left fingerprints when committing the crime, so the murderer eliminated all the fingerprints in the house." Nakamura said, feeling goosebumps all over his body.

My eyes widened, this time we had a very formidable opponent who could cause a murder out of thin air, and also erased all fingerprints in the room, leaving us no chance of possibly finding him.

"But, section chief, don't you think it's strange?" Nakamura spoke.

"What?" I looked at him.

"It's just that you didn't realize that everything that the murderer did before and after this case was very contradictory? Judging from the murderer's handling after committing the crime and the unbelievable way of entering and exiting the crime scene, the murderer is a high-IQ criminal, he can think of using pencil powder to destroy fingerprints, but why did he carelessly leave fingerprints when committing the crime, and his such obvious murder method is really inconsistent with his high-IQ identity, you must know that in general closed room murder cases, the police have to distinguish for a long time at the beginning to confirm that this is a homicide, but we can judge the nature of the case at a glance, The murderer left so many traces of the crime can only show that he committed the crime in a very hurry, but the people who committed the murder in the closed room were all premeditated, and all this is too contradictory. ”

I looked at Nakamura and pursed my lips, what he said was exactly what I had been thinking in my heart, this is indeed very contradictory, the murderer's obvious murder method, I guess maybe the murderer didn't know about the blackout, so the plan he prepared in advance was disrupted, such as faking the deceased's mother and son electrocuted and other methods will not work, but this statement is also a little reluctant, because the administrator of the power outage apartment on the 26th floor has already announced it to the public, how could the murderer not notice it when he planned it?

But why did the murderer leave his fingerprints? This is a mistake that even the most ordinary murderer would not make, my brow furrowed deeper and deeper, this is really incredible, and why the murderer smashed the floor-to-ceiling window, this act undoubtedly exposed his whereabouts even more and alarmed the neighbors, he would never be naïve to think that the police would think that he escaped from this broken mouth.

"But we didn't find nothing, at least we took the murderer's fingerprints on the neck of the deceased's son, which is also a fatal blow to the murderer." Nakamura said.

No, I squinted my eyes, this is very abnormal, from the incident to the current confusion of the police, you can see that the murderer is very thoughtful, he carefully set up this maze-like bureau, according to the normal progress, we should have found nothing so far, but we have made a breakthrough, we have extracted the murderer's fingerprints, or at the beginning of the case, will this be because of the murderer's carelessness? No, I don't think it's possible for such a murderer to let us kill him so easily.

"In addition, my searchers just found the deceased's mobile phone in the house, and we found that a call came in from the mobile phone at half past eight, the note was Nishizawa, but more importantly, we found out from the inbox of the text message, there was a text message from an unmarked number, the content is that if you don't agree, I will bury you with fire!"

My eyes twitched.

"I think it's very likely that this was sent by the murderer, and I will investigate the owner of this number as soon as possible." Nakamura said.

Looking at the back of Nakamura's departure, I looked back at the charred environment of the scene again, and I guessed that this text message should have been sent by Chiyoko's ex-husband, but there is no evidence at the moment.