Coroner Coroner

"I see..." Kudo Shinichi pondered for a while, then instinctively asked, "However, this doesn't rule out the possibility that Kaito Kidd is a college student, right?"

"It can't be completely ruled out."

"But, he's probably a high school student—"

"Because of calcium sulfate, as I said before, he still has a lot of calcium sulfate in his armor."

"And calcium sulfate is the main ingredient in chalk."

"So Kaiju Kidd has not only used a pencil eraser recently, he has also used chalk, or, helped wipe the blackboard."

Lin Xin shared his reasoning process and was worried about the different national conditions, so he asked Kudo specifically:

"Kudou, your high school also has a duty student, right?"

"Yes...According to the roster, one rotates every day." Kudo Shin nodded.

And he also completely understood what Lin Xinyi meant:

Those who leave a lot of chalk dust in their nails are nothing more than teachers and students who use chalk regularly.

In universities, teachers rarely ask students to do problems on the blackboard.

The work of cleaning the blackboard is also done by the school property staff, and the students on duty will not be responsible for it.

"So, Kaito Kid is a high school boy who has only recently been exposed to chalk, pencils and erasers."

"And judging from the fact that there is a lot of chalk ash between his fingers, it is very likely that he is the one on duty who is responsible for cleaning these two days."

Kudo briefly summarized Lin Shinichi's reasoning.

At the same time, Kudo couldn't help but be slightly surprised:

Unexpectedly, a small fingernail could allow the mysterious thief Kidd to reveal so much information.

This kind of scientific investigation technology that he has never been exposed to is more powerful than he imagined.

"Kudou."

After Lin Xinyi finished talking about his findings, he added:

"I asked you to come here this time, mainly because I want you to help narrow the scope of the investigation."

"After all, there are so many high schools in Japan... Even if the scope is narrowed down to Tokyo first, the workload of so many high schools will be too much."

"Investigation? How do you plan to investigate?"

Kudo did not answer directly, but asked curiously:

"You can't take every male high school student to do DNA and fingerprint comparison, right?"

"It's simple."

Lin Xinyi replied calmly:

"Prioritize to check the birthday list for these two days."

"If the student on duty can't find out the result, go directly to the school to check-"

"I have kept the smell of Kaito Kidd, so I can let Caesar come out."

Yes, human odor can be preserved for a long time.

Using activated carbon to absorb odors from the items left by the suspect, and storing them under vacuum or freezing, the odor can be effectively preserved for 6 months to 3 years.

Even the "antique" smell that has been preserved for 3 years, the success rate of police dog identification is more than 50%.

"It's still possible..."

Kudo Shinichi gained some insight again.

Then, he smiled slightly and said with a little playfulness:

"If that's the case, then we should be able to find Kaito Kid soon."

"Oh?" Lin Xin was surprised:

Could it be that Kudo has been able to pinpoint the scope of the investigation to a specific high school?

A famous detective is worthy of being a famous detective. How did you deduce this?

"signal."

"It was the code Kidd left on the clock dial that completely exposed him."

Kudo Shinichi gave the answer.

Cracking codes is his specialty as a famous detective.

Lin Xin was confused when he saw the code, but Kudo Shinichi was able to decipher the truth from the code in one second:

"Replace the circle of film name ciphers that Kidd left behind with Roman accents."

"Then move the vowel one place clockwise to read it."

"It will become-"

"'I'm definitely not going to hand over the bell.'"

Kudo paused slightly, and a smile appeared on the corner of his mouth:

"This guy's goal is not to steal diamonds at all, but to use this code to prevent the demolition of the clock tower."

"Our Mr. Kidd seems to have a lot of affection for this old clock tower in Jianggutian Town."

"That is to say..."

Hearing this, Lin Xinyi's eyes suddenly lit up:

"That guy is probably a local from Jianggutian Town?"

"And our primary investigation object is..."

He and Kudo looked at each other and said the answer at the same time:

"Jianggutian High School!"

Chapter 71

Jianggutian High School, an ordinary middle school, suddenly became the focus of the two "New Ones".

In order to increase the success rate, Lin Xinyi also included 2 middle schools and 1 university in Jianggutian Town into the scope of investigation.

Previously, only high schools were targeted because the workload of investigations into all junior high schools, high schools, and universities in Tokyo was too large, and the Metropolitan Police Department was simply unable to achieve it.

Therefore, Lin Xinyi can only take a certain risk, excluding junior high schools and universities with low probability from the scope of investigation, and concentrate on the investigation of high schools with the highest probability.

But now it's different...

Kudo helped narrow the scope of the investigation to Jianggutian Town, and the investigation pressure was suddenly reduced by a hundred times.

Even adding 2 junior high schools and 1 university, there are only 4 schools in total that need to be investigated.

Of course, the top priority of the investigation is still Jianggutian High School.

Because today is Sunday and the students are not at school, there is definitely no way to directly bring the police dog to search.

But that doesn't mean there's nothing to do now.

Lin Xinyi and Kudo are going to hurry up and start with the most suspicious candidates:

Therefore, they directly called the principal of Jianggutian High School in the name of the Metropolitan Police Department, and asked the principal to help send the list of the male students on duty who were responsible for the cleaning of the classrooms for the past two days.

After a long time...

"Jianggutian High School has sent the list of students on duty for the past two days!"

In Lin Xinyi and Kudo's fax machine, a thin stack of documents suddenly spit out.

Japanese high schools are generally small in scale. Jianggutian High School has three grades, and each grade has only six classes.

The principal contacted the head teachers of each class, collected the names of the students on duty for the past two days, and then removed the female students on duty, leaving only 17 students on duty.

What the principal sent was the student status information of the 17 male students, which contained the names, addresses, and photos of these students, which was very convenient for the police to investigate.

"Today, I will investigate these 17 people first."

"If Kidd can't be found this time, I'll take the police dog to the school tomorrow to find him."

Lin Xinyi and Kudo quickly reached a consensus on the investigation arrangement.

Then, they went to sort out the 17 faxed student status information together.

And then…

At the same time, Lin Xinyi and Kudo's expressions changed extremely wonderfully:

"Jianggutian High School, Class B of Year 2."

"Black Feather Fight."

Seeing the big head photo attached to this student status information, the two of them stared at each other, and the atmosphere was extremely awkward.

"Kudou...you have twin brothers?"

"No, no..."

"Then your father made mistakes and had an affair?"

"Impossible, my dad is not that kind of person..."

"What about your mother?"

"Hey... it's too much."

"Then... Actually, you are a child adopted by your parents, and you have a brother left in the orphanage, but you don't know it yourself?"

"I'm definitely biological... I look a lot like my dad."

"Then it's really your dad who cheated!"

"..."

Kudo denied Lin Xinyi's series of malicious guesses one after another, but his tone was a little less firm.