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Already having an idea in mind, the boy stood up, smiled at Kida Airi, and left with Kokarasuma and the two detectives.
Back in the police car, the boy just sat down and said to the detective in the front row:
"Investigate the source of the Aconitum powder in the lunch boxes of the two deceased."
According to the police's previous tests, the murderer did not use the Aconitum branches and leaves randomly collected from the roadside mountains, but dried the lateral roots of Aconitum like specimens and then ground them into powder.
This drying process is difficult for ordinary people to do, but if you carefully investigate the source, you may find some clues.
"Yes."
"Well, wooden man, that..."
Just as the detective nodded, Xiao Wuhuan, who was sitting next to him, suddenly spoke.
"I think I might know where the murderer got the Aconitum powder from..."
Chapter 653 It is wrong to judge people by their appearance
"Well, wooden man, that..."
In the police car, the detective just nodded, and Xiao Wuwan, who was sitting next to the boy, suddenly spoke.
"I think I might know where the murderer got the Aconitum powder from..."
The boy said nothing, but turned to look at her.
"There has always been a 'herbal museum' in our school. There are many herbal specimens on display. If I remember correctly, there seems to be a specimen of Aconitum among them..."
The boy was still not very clear about the situation of Kokarasuma High School.
"Can anyone enter your herbal medicine museum?"
"That's not the case. It's usually open to students only at certain times, and every time we go there, it's always a class together... But! The school organizes students to take turns cleaning the museum every week!
Every time we do a general cleaning, we work in groups of five or six. We not only have to mop the floor, but we also have to clean the glass display cases inside and out until they are shiny!"
When she said this, a look of deep disgust and hatred suddenly appeared on Kougamaru's face. It seemed that she had been rotated.
"If this is the case, I think the murderer should have had the opportunity to secretly take away the Aconitum specimens in the museum!"
"How are those specimens preserved?" the boy asked.
“Most of them are placed in glass display cases, and then… they are placed in glass bottles with their names and numbers on them.
Oh, right! Although the bottles also have small locks and cannot be opened...but, the keys to those bottles are actually easy to get..."
"What do you mean?"
"I found it when I was on duty cleaning the place. The keys to the museum's display cases and bottles were all kept on the desk of the school's dean.
Although that is what we say, because we have to take turns cleaning every week, any student on duty can go and get the key, without even having to apply.
After all, the museum only contains some common herbs, nothing particularly rare or precious. Even if the key is placed there, no one will steal it..."
The meaning of Xiao Wuhuan's words was obvious. Although on the surface, the school museum was strictly protected and all kinds of specimens were locked.
But in fact, due to the school's negligent management and indifference, this strict protection has become a complete decoration. Anyone who has this idea can steal the Aconitum specimens in the museum without anyone noticing.
Hearing this, the boy sighed softly and was speechless.
"Let's go to school first, and then we can go to the museum to confirm it."
After confirmation, the facts turned out to be exactly as Kogumaru had guessed.
There was indeed one Aconitum specimen missing from the school's herbal museum.
This was only confirmed after the school took out the record books from previous years and carefully looked through them for comparison.
The main reason is that the specimens of Aconitum lateral roots are very small, usually only the size of a fingernail, and there are many roots in the glass bottle in the museum, so the fact that only one root was missing has never been noticed by anyone.
In short, the source of the aconite used by the murderer has now been confirmed, but the clue has been lost again.
But soon, new clues emerged.
The boy had just come out of the herbal museum when the detective who had been investigating various intelligence on the two deceased persons in the school hurried over.
"Mr. Shirakawa! We have a clue!"
The detective saluted the boy first, then said excitedly:
"We found a suspect who may be related to both victims!"
As he said this, he opened the folder in his hand and handed the file of a certain person to the boy. Xiao Wuhuan beside him quickly leaned over to take a look.
This is the file of a young man. In the photo, he looks to be in his twenties or early thirties.
The man is very handsome, with flowing hair and a gloomy temperament on his face, like a literary youth. He is the type that is very attractive to some young girls.
The man's name is Ryuhei Aizawa, and it is clearly marked on his file that he is also the Chinese teacher of the second-year Class E, as well as the club advisor for the school's drama club.
Class E, Grade 2, was the class of the second victim, Sanae Miyamoto.
The drama club was a club where the first deceased, Akina Kanda, served as vice president.
In other words, Mr. Ryuhei Aizawa knew both victims, so regardless of whether he was the murderer or not, it is worth asking him about it.
Soon, the boy met Mr. Ryuhei Aizawa in a classroom office in the school.
"The murderer committed such a despicable act! I will never forgive him! If we don't catch this bastard as soon as possible, we don't know what dangerous things will happen again! Now the students are very uneasy, and we teachers can't concentrate on teaching..."
In response to the boy's direct questioning, Ryuhei Aizawa's tone was very excited and angry.
To be fair, this young teacher does have a good appearance and a strong physique. Coupled with his temperament of a literary youth, he has a bit of the "yellow-haired characteristics" that often appear in novels and comics, where he likes to seduce others to cheat. He is the type that is likely to disrupt the "school atmosphere."
Of course, it is wrong to judge a person by his appearance.
"Do you have any idea about the murderer who killed the two students?" The boy looked at him and asked calmly.
"no!"
Aizawa Ryuhei's face suddenly turned red. He paused for a moment before continuing in that excited tone:
"Akina-san is a good student who studies very hard! Miyamoto-san is obsessed with tennis! I can't imagine why someone would want to kill them..."
When he said this, a hint of sadness suddenly flashed in the depths of his eyes.
The boy said nothing, but just narrowed his eyes slightly and looked at him expressionlessly.
"I'm sorry, Officer Shirakawa. I just feel sad when I think about these two outstanding students being killed. They were so young... I'm sorry..."
As if he noticed the boy's gaze, Ryuhei Aizawa sighed deeply and looked gloomy.
"I understand. Please don't be too sad, Mr. Aizawa."
As the boy spoke, he suddenly laughed, which made the little Karasuma beside him gasp.
Because the boy's smile at this moment was a super gentle and sunny smile like that of the big brother next door.
She understands! She understands too well!
Every time this wooden man shows this "weird" smile during investigation, it means that he has noticed some very important clues!
[What? What did you find out?!]
Chapter 654: Listen! Give me Kang Kang!
After meeting and briefly questioning the suspected teacher, Ryuhei Aizawa, the boy left the high school with Karasuma.
"Wooden man, do you think he is the murderer?"
That evening, in the Hatoyama family's room, in Hatoyama Keiko's room, Karasuma squatted beside the stove, feeling the warmth brought to her by the small stove, and asked.
Although she herself did not notice anything strange, the boy's weird "big brother next door" smile at that time gave her great confidence.
"It's just suspicion."
The boy sat nearby, peeling an orange with his head down in deep thought.
When facing his questions during the day, Ryuhei Aizawa revealed a strange emotional reaction. Although he quickly covered it up and hid it with his grief for the deaths of the two victims, the boy still caught this strange reaction.
Ryuhei Aizawa must have hidden something during the interrogation during the day.
Of course, he is just a suspicion after all. It would be too arbitrary to conclude that Ryuhei Aizawa is the murderer.
Moreover, they did not have any relevant evidence or clues at the time. If Ryuhei Aizawa was really the murderer, if they rashly questioned him, not only would they not get anything out of him, but it would also arouse his vigilance and cause him to do something extreme, which would be inappropriate.
Therefore, the boy chose to go home without asking any further questions.
"So what should we do next?" Xiao Wuwan asked again.
"Let someone investigate Ryuhei Aizawa's family and interpersonal relationships first, and take your time," the boy replied.
As he spoke, he divided the orange in his hand equally and handed each to Keiko Hatoyama and Kokarasuma beside him.
"Eh... I thought you would suddenly have an idea and catch the murderer in one swoop..." Xiao Wuhuan took the half of the orange and complained.
In the more than one year since she returned to Japan, she can be considered a "veteran" who has accompanied the boy through many cases. Although most of the time she is only responsible for waving flags and shouting, playing a supporting role, and finally getting an "assist" or something, she has still gained a lot of experience.
Among them, the boy's behavior most of the time made her accustomed to it.
It's like that, the murderer will always come up with some incredible killing methods that normal humans can't imagine, and the boy will usually suddenly find a flaw in the reasoning process, and quickly deduce the only identity of the murderer that fits the situation, and finally catch him from the crowd of onlookers nearby.
Cases like this save time and effort to solve. The criminal is right next to you and there is no need to run far to find him. Wooden Man can probably solve three or four cases a day.
"That's because they have holes in their brains." Knowing what Kougamaru was talking about, the boy responded.
He also didn't really understand the thought process of this type of criminal. After committing a crime, instead of thinking about running away, he actually dared to stay at the crime scene and help the police solve the case?
It would be fine if it was any other detective, but you dare to be so arrogant in front of him? What are you thinking?
Of course, for the boy himself, if all the cases in the world were of this type, it should be considered a good thing. After all, as long as he could crack the murderer's method of killing, he could find the criminal directly at the scene without worrying about not being able to catch him. This would indeed improve his efficiency in solving cases to a considerable extent.
But this is impossible. The boy encountered more cases of this type. The murderer did not use any strange methods to kill, but spent all his time on hiding his identity as the real murderer.
In this type of case, the murder method is simple and clear, but the difficulty lies in digging out the real murderer. We can only start from the deceased's side, unraveling the mystery bit by bit, and investigating one by one...
"When Karasuma-chan is at school, you can also ask him about this. In these matters, the identities of classmates are always more convenient than the police."
The one who spoke was Keiko Hatoyama. She handed the orange in her hand, of which she had only eaten a few petals, to Xiao Wumaru. This thing is high in sugar, and consuming too much is not good for her health.
A whole year has passed since the last case involving classmate Anzi, and from the outside, Sister Keiko doesn't seem to have changed much.
If I have to say something, it is that she seems to have become a little "lazy" recently?