"I have a basic understanding of the specifics of the case." Kudo spoke.

I paused, looked up at Kudo, "So, do you have any ideas?" ”

Kudo picked up the cup in his hand, looked at it for a while, and then put it down, "Not for the time being, the clues we have in this case are as follows, there was a power outage on the 26th floor of Shibaon Apartment from 7 to 9 o'clock in the evening of the 16th, during which at about 7 to 8 o'clock the residents heard a sound similar to the ashtray falling, that is, the sound you heard when you went to Chiyoko's house, and then for about a few minutes after the call came at about nine o'clock, many residents heard the violent sound of broken glass from the deceased's house, Later, through the thick smoke, everyone discovered the fire and rushed into the deceased's house, where they found the bodies of the deceased, Ms. Suzuki, and her son, Shota Ito, on the blankets in the living room. ”

"By detecting that the cause of death of Ms. Suzuki was burned, her face had traces of being hit by a blunt object, it should be that the murderer knocked her unconscious and then poured oil stains on her body to burn it, although Shota's face was seriously burned, but he died of mechanical suffocation, and the purpose of the murderer's burning of the body should be to destroy the traces accidentally left during the crime, but the fingerprints taken by the police on Shota's neck were those of the deceased Ms. Suzuki."

"The fire was presumed to have started with a lighter that fell on the ground, and the murderer used a lighter to ignite the carpet to cause the fire, and the scene was found blackened tea tables, sockets, vacuum cleaners, and more striking is the broken hole in the floor-to-ceiling window, which can confirm that the sound of broken glass heard by the residents after the call at 9 o'clock came from here."

"This shows that the murderer was still in the house at the time of the call, but the police did not find anyone to leave the door during the surveillance, and as far as you can confirm, no one was heard to enter the deceased's house before this, which is the most bizarre and intriguing part of this case."

"And at the scene, the police found a gruesome thing, that is, the murderer patiently destroyed all the fingerprints in the house through pencil powder after the killing, this meticulous and very careful behavior surprised me."

"I have four questions in this case, the first is why the murderer smashed a broken hole in the floor-to-ceiling window, the murderer's purpose of causing this broken hole is still unknown to us, because the murderer did not leave through the door, and the police searched the house and there was no murderer hiding, which can't help but make people wonder if the murderer really jumped out of this broken hole, of course, this is impossible. The second question is, why did the murderer use fire? Although I speculated that the murderer may have seen Ito's previous threatening text messages and wanted to create the illusion that Ito was killing people, I never thought that the murderer's purpose was just that, because arson and killing people is a very dangerous method, and it is very easy to attract others at the first time, so I have another guess, arson and corpse destruction has always been to eliminate traces, I think the murderer should be to destroy something on the deceased's body, if the police find out, they will expose their own things, I suspect that it may be a blunt force wound on the head of the deceased Ms. Suzuki, because it is a favorable proof that he killed him, but this is also unlikely, because not long after the fire broke out, the occupants arrived as fast as possible, and the body of the deceased was not completely destroyed, so it is impossible for such a shrewd murderer not to think of this, so I think the murderer must have other plans, and it must be of great benefit to him, or even more than one benefit, so the murderer will choose this most dangerous and easiest way to expose himself. ”

"The third question is why the murderer left those traces of the crime that he wanted to destroy, he must have planned for a very long time before the crime, but he still made a lot of mistakes, such as the fingerprints in the house, if the murderer did not leave fingerprints, then why did he destroy all the fingerprints at the scene?"

"The last suspicion is how the murderer entered and left the scene, this is a very puzzling question, not long ago we guessed that the murderer entered the deceased's home from the balcony through the air conditioner, but the major suspect Ito has an impeccable alibi, which is almost the only way to enter the deceased's house except for the main entrance, so where did the murderer enter?"

I looked at Kudo's puzzled face and knew that his brain was working at full speed, but he still couldn't find out the truth of the case in a short period of time.

"As I said, this is a very complicated case, and the answer must be very difficult." I say.

"No, it's not difficult, on the contrary, the answer must be very simple." Kudo blinked at me with bright eyes, "This case solving is like solving a problem, the really difficult ones are often those extended questions with a lot of answers, and those questions with a single answer are often not difficult, just like in the case, what really makes the police rack their brains are those cases that are similar to murder in the wilderness, because the murderer has countless ways to enter and leave the scene, and the answer to murder in a closed room is actually not difficult." ”

"Then why don't we know the truth at all?"

"Because the murderer set up a blindfold." Kudo's eyes lit up with a sharp light.

"Tricks?"

"That's right, the murderer must have set up a blindfold, so we can't see through the surface of the case, in fact, the truth must be very simple, but we are all confused by the murderer, maybe we want to complicate it."

"How do you say that?" I looked at him.

"Remember a locked room murder the year before last? The deceased was a teacher, was found dead in the school's men's locker room, the cause of death was poisoning, but the police found that the door of the men's locker room was blocked from the room by a wooden stick, after testing the police ruled out the possibility that the murderer used a thread to pull the wooden stick through the crack in the door, but the police found that there were traces of climbing on the wall between the women's locker room separated from the men's locker room, so the police speculated that the murderer poisoned the deceased and then climbed over the wall into the women's locker room and then left the scene, and the teacher who finally entered the women's locker room did lock the door, and the police also sent the murderer to steal the key, so how did the murderer leave the women's locker room? "Kudo took a sip of the wine in the cup" finally the police cracked the case, the answer is actually very simple, the murderer took a lock that looked the same after the female teacher unlocked and entered the locker room and replaced the lock on the original door, after the female teacher closed the lock, the murderer used the key to open the lock, and finally replaced the original lock when leaving, the truth is actually not difficult, and even simple enough that anyone can implement it perfectly, but this seemingly simple answer has never been thought of, which has troubled the police for a long time. ”

"I remember that the person who solved this case seems to be you, and it is because of this case that your reputation in China can be said to be increasing day by day, and many voices have begun to say that I have been left far behind by you." I looked at Kudo and said.

Kudo smiled bitterly, "Don't be sarcastic about me, although there is such a voice, but I just want to say that what the public knows, what they see is only superficial, because I am often active all over the country and often exposed in front of the media, the public must know more about me than you, but as long as I think of the case in the first three years, I know that I can't stand shoulder to shoulder with you until now." ”

Kudo's gaze suddenly became solemn, he picked up the cup and drank the rest of the wine with his head up, "That case is known as the most difficult case in Japan in this century, of course, this is our evaluation in the industry, laymen don't know, and the person in charge of the case is you." ”