When I woke up, the table in front of me was already empty, Kudo didn't know where he had gone, maybe he had left early, it was already dawn, there seemed to be people walking outside the door, I opened the door and saw Watanabe with an excited face.

"What's wrong?" I looked at him quizzically.

"Section Chief, we have made a major discovery, well, no, it should be said that Kudo-senpai has made a major discovery."

"What discovery?" The more I looked, I spotted a number of police officers entering and exiting the corridor.

"Kudo-senpai came to the bureau early this morning, and he first asked me if Ito's own home was very neat and clean, because I and the section manager had been to his house the morning after the crime, so I said yes, but how did Kudo-senpai know? So I asked, Kudo seniors said that a person's habits do not change due to the environment, and when Ito was in the bureau before, Kudo found that he paid great attention to hygiene and the cleanliness of the environment, and even he did not allow a pen to be left without a cap. ”

"Well, I've noticed that too, what does that mean?" I frowned.

"But here's the problem, Ito obviously pays so much attention to hygiene, so why is the house he rents next to the deceased really so messy?"

Bang, my brain was dazed, as if it had been hit hard by something.

"Ito said on the phone that he didn't know why his house was in chaos, he hadn't come back since the incident, and it couldn't have been him, so Kudo's senior meant that someone sneaked into Ito's house on the night of the crime, and that person entered the balcony of Ito's house through the same method, through the air conditioner on the floor-to-ceiling window, and then entered the deceased's house from the balcony of Ito's house."

"And that person is the resident who lives next door to Ito! We should have thought that the murderer was left with only the balcony in addition to the main entrance to the scene, but Ito was not suspected, but this does not mean that the murderer did not enter through this method, we should have thought that the suspect was the resident next door to Ito, and he could enter Ito's house through the same method and then enter the scene of the crime, this answer is not difficult, but if it weren't for Kudo's predecessors, none of us would have thought of it. Watanabe looked ashamed.

I watched the police coming and going in the corridor with wide eyes and lost my mind for a moment, could this be the blindfold set up by the murderer that Kudo said? Now that the trick has been removed, has the murderer hiding behind the scenes gradually revealed his prototype?

"We immediately investigated the resident, the resident's name is Kitamura Kumaichi, but according to the investigation, Kitamura left the apartment after the incident, and he hasn't come back until now, we guess he must have absconded, and now Kitamura is being wanted, and the process of the case has finally broken through until now, which is really exciting, thanks to Kudo's seniors." Watanabe's eyes were shining, but he suddenly noticed me with a dull face, and quickly closed his mouth.

Soon after, Ito came, and when he saw me come and greet me, he was no longer as haggard as he had been when he left, and he was dressed again, but it could be seen from his expression that he had not come out of this incident.

"I heard that the murderer is finally going to be caught, thank you for your hard work." Ito bowed respectfully to me.

"No, it should be." I looked at Watanabe, and Watanabe quickly explained, "It was Kudo-senpai who asked me to call Mr. Ito and ask Mr. Ito to confirm the situation at home." ”

"That's right, that's right." Ito nodded, and then he followed Watanabe into the 2,607 houses.

I asked Kudo about his whereabouts, and my colleague told me that Kudo had returned to the bureau, and I then went downstairs and drove to the police station.

I walked into the police station, but I didn't find Kudo's figure, and after looking for a long time, I finally found Kudo in a small room, this room has no windows, closer to the secret room, it is a place that makes people feel depressed, but I know that Kudo likes to stay in such a place, so that his whole body will be completely calm.

I walked into the room, and he didn't look up at me, although I knew he had noticed that it was me, and I looked at his table, and saw that there were still pictures of the scene and a dense piece of paper written by him.

"Isn't the murderer already locked? What are you looking at here? I asked.

Kudo leaned back in his chair for a long time, his brow furrowed slightly, this was the first time I had seen him frown when he came.

"I just feel that some of the circumstances at the scene can't be explained, such as the broken window, the fire at the scene, and the lack of fingerprints, if the truth is true, then I can't explain the murderer's actions."

"As long as the murderer is caught, it will be fine."

"Nope." He looked me in the eye, "Solving a case is like solving a problem, the most important thing is not the result, but the logic, if this logic does not make sense, then it can only be said that the result is wrong, everything has its own logic, we can't ignore it and directly push out the result." ”

"So, the occupants of 2607 aren't murderers?"

"No, I can't say that, but not at the moment, because I can't find any evidence that he is the murderer."

I nodded as if I didn't understand, walked out of the house, and as soon as I went out, I met Watanabe, who was in a hurry, and Watanabe looked at me and immediately stopped, "Section Chief." ”

"Well, what did Ito say."

"Oh, Ito said that there were indeed traces of someone entering the house, and that the hundreds of thousands of dollars in cash he had stored in the house were missing."

"How's the wanted for Kitamura?"

"Some people say that Kitamura has returned to his hometown and that we have contacted the Nagasaki police, and we should be able to arrest him soon."

"Hmm." I nodded, and after Watanabe left, I returned to the office and sat down, looking at the clues on the whiteboard on the wall, the shattered floor-to-ceiling windows, the two noises before the crime, the scene without fingerprints, the fingerprints of Chiyoko on Shota's neck, and the unusual fire.

It's true that the murderer set up a blindfold, and there is more than one, so he can always hide behind the scenes, so that our police have not been able to capture any information about him before, but now, because of the arrival of Kudo, we are gradually unveiling the fog, and it seems that we will soon catch the murderer hiding in the shadows, but I don't know, this time, is this the truth, or one of the methods set up by the murderer, the murderer's various practices at the scene are indeed intriguing, and there is always a kind of redundant move, He obviously didn't need to cause a broken hole in the window, and he didn't need to remove all the fingerprints at the scene, wouldn't he pay attention to the traces he left behind? All this is known only to the murderer, and all we have to do now is wait for news from the Nagasaki police.