Into the Ke Xue World by mistake

Chapter 11 Serial Murder Case
Before long, the doorbell rang.

"Dinglingling, is anyone home?"

A strange man's voice sounded outside the door.

"Who is it? It's early in the morning to disturb people's dreams."

Shirakawa Yuki was sleepy, and walked out in her pajamas.

"Uh……"

Takagi She outside the door looked embarrassedly at the white-haired dumpling who hadn't woken up yet.

"I'm really sorry, miss. I'm Takagi Shepherd, the chief inspector of the Third Department of Forcible Criminal Investigation, Division [-], Criminal Division, Police Department. I'm here to get some information from you."

When Shirakawa Yuki went to the Metropolitan Police Department last time, Takagi happened to be on the police station, so I didn't see her.

"Ah, it's Officer Takagi, what happened? I'm Haruna Hoshino, I'm quite familiar with Officer Megure, maybe I can help."

Shirakawa Yuki suddenly realized, no wonder he looked familiar just now, it turned out to be Takagi.

Takagi also looked at Baimao Tuanzi in surprise, "Hey, so you are the high school student detective Haruna Hoshino that Police Officer Megure mentioned."

Takagi has heard of her, and heard that her reasoning ability is comparable to that of Kudo Shinichi, so he did not expect to meet today.

"Wait for me to change clothes, let's talk slowly."

After finishing speaking, Shirakawa Yuki went back and changed into a silver-white windbreaker, and followed Takagi into the car.

Anyway, staying at home is boring, so I just went out to solve a case to relax, and I also got a good impression inside the Metropolitan Police Department.

"It's like this, Ms. Hoshino. Recently, there was a serial murder case in Mihua Town. The murderer only targeted little girls, and his tactics were extremely cruel. So I wanted to ask if anyone in the neighborhood has seen any strange people."

After hearing this, Shirakawa Yuki frowned, this is a pervert, he can even do things to little girls.

"Is there any connection between these little girls?" Shirakawa Yuki asked.

Takagi replied: "We have investigated the victim's school, friends, and places he has visited recently, and we have not found any connection."

Shirakawa Yuki frowned, now he will be in trouble.

"The killer belongs to the predator."

Seeing that Takagi wanted to ask, Shirakawa Yuki explained.

"Predators attack immediately upon contact with their victims. Serial killers of this type often have very strong antisocial personalities, are extremely aggressive, and their crimes are often unplanned."

"Go ahead and tell me, where are the crime locations of these cases?"

It is still a bit difficult to find the murderer now, Shirakawa Yuki is going to listen to the clues first.

Takagi took out the police handbook and said, "The first case happened in Mihua Park. The deceased Yayoi Taketa, 7 years old, died between 8:10 am and [-]:[-] am three days ago."

"The second case happened in an alley near Mihua Shrine. The deceased, Nanabu Mizumi, was 7 years old. He died between 14:16 and [-]:[-] two days ago."

"The third case happened near Mihua University. Yuki Terai, 7 years old, died between 20:22 and [-]:[-] two nights ago."

After Takagi finished talking about these three cases, he looked at Shirakawa Yuki.

At this time, Yuki Shirakawa took out the electronic map of Tokyo that Dr. Agasa helped to invent some time ago, and sketched something there.

"Miss Hoshino?" Seeing that Shirakawa Yuki didn't respond, Takagi couldn't help shouting.

"Wait for me, I'll find it soon."

At this time, Shirakawa Yuki was seriously looking for the possible residence of the murderer.

After a while, Shirakawa Yuki let out a long breath, "I finally found it."

Handed the map to Gao Mushe, pointed to the final calculated location and said to him: "Now we can send people to arrest people here."

Takagi was stunned, what happened, how could he be able to arrest people by telling the basic information of the case?

"Miss Hoshino, are you sure you can find the criminal here?"

"Oh, trust me, it's true."

Shirakawa Yuki said with a smile, with a confident face.

"But there are not enough people in the third section. Because of the Shinkansen bombing, Officer Megure took all the brothers there."

Takagi was a little helpless, he and Officer Sato were left in the police station today, although Haruna Hoshino calculated that the scope was already very small, but still a lot of people were needed to go.

"Then find the police officers from Section [-]. Anyway, they're fine. The Kaitou Kidd didn't show up. They're just idle all day long."

Shirakawa Yuki looked indifferent.

Takagi She looked helpless, although this is the truth, but is it really okay to say it this way?
Takagi called police officer Mugure for instructions, this is not something that he, the inspection minister, can decide.

Police officer Mu Mu also became serious when he heard about it. After all, the serial murder case is very serious, and no one can guarantee whether the murderer will do it again.

After confirming with Shirakawa Yuki that it was not a joke, he hurriedly talked to Nakamori Ginzo from the second search section.

Officer Nakamori also attached great importance to it, so he hurriedly called the police officers from Section [-] to rush to the designated location.

Police officer Megure on the other side also hurried over. The Shinkansen side was almost over, so he had to come over to check the situation here.

"Sister Hoshino, are you sure the murderer is here?"

Police officer Mu Mu was still a little uneasy, after all, if he made a mistake, he would be ashamed and sent to the second class.

After hearing that Shirakawa Yuki didn't even go to the scene to see it, but just heard Takagi talk about the case, and took out a map to sketch it, I couldn't believe it.

"Of course, Police Officer Megure, I have seen the crime locations of this case, and the locations are not very scattered. It is obvious that they belong to the 'field-type' criminals."

Seeing that all the police officers on the side looked half-knowledgeable, Shirakawa Yuki continued to explain.

"With the criminal's own "psychological support point" as the center, serial criminal acts are carried out within a certain geographical range.

The "psychological support point" of such criminals is often their residence, work unit or public places they frequently visit.Domain-type serial killers are more common, and Jack the Ripper is one of them.

And such prisoners usually form a blank area between their "psychological support point" and the crime area. This area is called a "buffer zone", and the murderer often thinks that it is not easy to be caught.

So, I found the approximate range of his residence by analyzing the area where the crime occurred.But this is not accurate enough. "

Having said that, Shirakawa Yuki paused for a moment, attracting the attention of all the police officers.

"And then, sister Hoshino?" Although police officer Mu Mu couldn't understand, it just felt so powerful for no reason.

"Next I used the Manhattan Metrology."

Police officer Mu Mu was puzzled again, "Manhattan measurement method? What is that?"

"The Manhattan measurement method is a mathematical model that can accurately calculate the residence of serial murder criminals.

Substitute the X-axis and Y-axis coordinates of the location of the crime scene into the formula to calculate the law of the criminal and further infer the probability of the criminal's residence.

The area formed by the points with the highest probability is the place with the highest probability of where the serial murderer lives. "

Having said that, Shirakawa Yuki finally explained how he found this place.

"So combining the results calculated by the two methods, the only place finally obtained is here."

Hearing this, Police Officer Megure probably understood what Shirakawa Yuki had done.

(End of this chapter)