"Why do you have such an idea?" Nakamura asked.

Watanabe shook his head, "I don't actually know myself, but I just think that the only effect of the murderer is to attract the attention of others faster, so since I can't figure out what the murderer is for, then I wonder if the murderer's purpose will be like this." ”

Kudo's eyes narrowed, apparently Watanabe's words seemed to open some knots in his heart.

"If that's the case, then I think I've got it clear." Nakamura suddenly spoke, and we turned our heads in astonishment to look at the middle-aged man, who had always been unknown, and his gray eyes lit up with a sharp light, as if a young man had taken off the mask of his age.

"In this case, we have been hitting a wall, we have been wandering, we don't even have a direction, we can only keep going back and forth on the edge, using the most old-fashioned methods, one by one to check the people around the deceased, this case can even be said to be the most bizarre case our police have ever encountered, how did the murderer enter and leave the scene? We thought of all possibilities, but we all denied it ourselves, and some people in the police community said that this closed room murder case could surpass the previous sleepwalking murder case, but just now I understood why we are progressing so hard, because we are all confused by the murderer, from the very beginning. ”

"In the beginning?" Watanabe's eyes widened and he didn't blink.

"Because the murderer is the deceased himself, we are all confused by the deceased, this is a suicide case at all, not a closed room murder case." Nakamura said word by word with his eyes open.

I noticed a subtle change in Kudo's eyes at this moment, as if water droplets fell into the tranquil Xiao Tan and there were clear microwaves.

"We ruled out all the impossibilities, so the only possibility left was that the deceased committed suicide, which is not a difficult answer, but none of us dared to think about it, because we had preconceived notions that a mother could not kill her son, but if this was the answer, many doubts could be explained."

"We have always believed that the deceased's fingerprints on the neck of the deceased's son were obtained by the murderer, so what if this is the deceased's own homicide evidence? And the scar on the deceased's head that was hit by a blunt object was actually not very deep, that is, it may have been smashed by the deceased himself, and he did not cause himself to faint, but deliberately made traces of his killing, and then set himself on fire, and deliberately did not apply oil to his face, but because he was worried that the body would be completely destroyed due to being discovered too late, the deceased caused a broken hole in the window, so that the smoke could spread to the window faster and attract the attention of the neighbors, but the deceased did not expect the fingerprints on his son's neck to be preserved. ”

"So why did she do that?" Watanabe said.

"In order to frame my ex-husband Ito who has been pestering." Nakamura replied.

"It's impossible, didn't the deceased already call the police, the police have dealt with it, right? The deceased probably wouldn't have committed suicide for this reason. ”

"Then it may be because of the urgency of life, after the divorce, the pressure of the single mother is getting bigger and bigger, and finally to the point where I can't go on, I checked the deceased's company, her salary is actually not very high, because the urgency of life caused the deceased to have the idea of suicide, and remembered Ito, who had been pestering him before, and thought of the threatening text messages he sent, so he used the fire to create this closed room murder case to frame him."

That's true, Chiyoko used to have to work on weekends because of the pressure of life.

"But there are so many pieces of glass on the ground, if it were the murderer, the body would definitely be splashed to pieces, but there are no pieces of shards on the deceased."

Nakamura paused, and it could be seen that the elderly policeman's mind did not turn for a while.

"There will be no debris, because according to the residents' feedback at the time, only a sound of smashing glass was heard, indicating that the murderer broke the window at once, and according to the density of the window, it can be concluded that the murderer must have been caused by throwing objects from a distance, so he will not be splashed by debris." Kudo spoke, and when he said this, his face did not fluctuate at all, and he was very calm.

"So it's a suicide case?" Watanabe said.

"No, Chiyoko would never kill herself, and she would never kill her own son." I suddenly spoke firmly.

"I can't imagine a mother strangling her own son with her own hands, which is more painful than stabbing herself in the chest, but at the moment it is obviously very reasonable." Nakamura said.

"No, I investigated the deceased's home, and the deceased's sister said that she would receive 100,000 yen from the deceased every month, and the deceased's home was fully equipped, and the deceased did not rent it, but bought it in full, and this apartment is in the center of the city, which shows that the deceased is not very poor, and he has no reason to commit suicide." Kudo spoke.

"Moreover, according to the investigation, the sound of glass breaking sounded about five minutes after the call, that is, after nine o'clock, and then about ten minutes or so the residents broke down the door of the deceased's house, but according to the most conservative estimates, the shortest time to form a fire of that magnitude was at least ten minutes, so if the deceased smashed the glass and then set herself on fire, then the time when she was found would have to be delayed by at least five minutes, so this case could not have been a suicide, this is a case of murder in a closed room." Kudo raised his head and looked sharply at everyone in the room.