Fortunately, Kamio Kaede was born in the professional group and received more formal and systematic training in criminal psychology courses at the police academy, so he was not confused by the almost whimsical rhetoric of the Fire Buddha Xiuyi.

But this guy has not been reporting to the police station for more than an hour, and the file of the five deaths is at best a rough one, and he is so sure that the coffin is conclusive, and it is the same killer who committed it.

Kamio Kaede questioned: "For a long time, I thought that it was too reluctant for the department to treat these five lives as a series of serial eucalyptus investigations, and now you think the same way?" Think that the left-handers in the five cases are all the same person? ”

Although the other party may not seem to be much older than him, in line with the sincere teachings of the Kitamura Police Department's friendly treatment, Kamio Kaede still decided to give the other party an honorific title.

"It's not wrong, the murderer of the five deaths is the same person." The Fire Buddha Shuichi continued to look through the file on the table, lowered his head and pondered for a while, and said with certainty, "Nanao Toyama who was murdered in the Hanging Garden Residential Area, Yoshisho Genta, a waste scavenger who was murdered in the Tanibu Development Zone, Chado Taihu, a pharmacist who was murdered at Shibuya Central Hospital, Harumi Kobayashi, who was murdered in Shibara Park, and Erika, who was murdered in the Cikyu Mental Hospital, were all committed by the same left-handed criminal. ”

"It's only been less than an hour...... Don't take a closer look at it anymore? Kamio Kaede shook his head and pointed to the dossier, "In the eucalyptus discovery site of the distant mountain Qixu and Kobayashi Harusui, the same hair and body night were extracted, and the forensic identification was indeed committed by the same left-hander, but the eucalyptus of the other three people has no clear evidence that it can be related to the other two eucalyptus......"

"Do you think that Nanao Toyama and Kobayashi Harusui are both female victims, and Yoshisho Motota, Chado Taihu, and Erihua are all male victims, so the murderer is not one, right?" Fire Buddha Shuichi said.

Kamio Kaede nodded, that's right, the scavenger Ji Xiang Yuantai, who was killed in the Gushen Development Zone, was quietly wiped his neck under the bridge where he slept, and he didn't even call for help or struggle, just silently under the bridge forever, and the corpse gradually became cold.

When the surrounding scavengers got up early and left, they thought that Ji Xiangyuan, who had always been diligent, was too lazy for a day, until he returned at night and saw that this guy was still sleeping in the same place, so he realized that something was wrong.

Kamio Kaede made a variety of inferences about Yoshisho Motota's death, but without exception pointed to vendetta as the motive for the crime, because the murderer did not get any benefit from killing a scavenger at all, unlike Nanao Toyama and Harusui Kobayashi, who could get great physical satisfaction.

This kind of hatred may come from the jealousy among peers, such as the seizure of the territory of other waste pickers, or the medical accident that occurred before Yoshisho Genta was fired from Tengahara Private Hospital, and other hatreds.

Chado Taihu is a pharmacist at Shibuya Central Hospital, divorced from his wife a few years ago, rented an apartment, and worked for a well-known pharmaceutical company.

In the early hours of May, in the dark midnight when everything was asleep, the killer easily pried open the door of Chado Taihu's apartment and came to the bed in his bedroom.

Maybe it was standing in place for a while, quietly looking at the quiet sleeping posture of his prey, Chadu Taihu was awakened, and the moment he called for help, the murderer twisted off the vertebrae with his bare hands, and he completely lost his strength.

Later, the murderer seemed to torture him, and after rummaging through the cabinets in the apartment, he pulled out a knife and stabbed Chadu Taihu in the throat, killing him with a single sword.

The same is true of Hui Lihua's death, at three or four o'clock in the morning, the murderer sneaked into the ward, was twisted off the spine in advance, and suffered inhuman torture before dying of excessive blood loss.

At the scene of the eucalyptus of the three victims, Yoshisho Motota, Chado Taihu, and Hui Lihua, no murder weapons were found, no footprints or hair fingerprints left by the murderers, no witnesses, no surveillance videos, and the victims had no signs of resistance, or no ability to resist at all.

At least the two women, Nanao Yuanshan and Harusui Kobayashi, have struggled fiercely, but it didn't have much effect.

Perhaps the Fire Buddha will interpret this as the murderer was seeking physical stimulation and did not kill him with a single knife.

In short, there was a lot of evidence left at the scene of the two female deceased eucalyptus, and no clues were found at the scene of the three male deceased eucalyptus.

For Kamio Kaede's questioning, an imperceptible smile seemed to flash in the eyes of the Fire Buddha Shuichi, "This is the most interesting thing about this eucalyptus......"

Kamio Kaede was a little displeased with the Fire Buddha Xiuyi's eloquent talk like answering questions in the exam, and asked, "What's interesting, the five victims were stabbed to death by the murderer, and the police are like headless flies, right?" ”

Fire Buddha Xiuyi shook his head slightly, "I think this murderer is very interesting, I have never encountered such a strange criminal since I was a detective."

As I said, this may be a serial killer with a dual split personality, and you know that the full name of split personality is dissociative identity disorder, which is the most wonderful and fascinating mental disorder in clinical psychology......"

"Okay, okay, don't talk to me about science, let me ask you what's interesting?" Kamio Kaede waved his hand and impatiently interrupted the expert's psychology popularization class.

"He's both an introverted lurker of the domain foraging type and an outward predator of the invasion type of the intrusion site!" Fire Buddha Xiuyi was very sure, "For the distant mountains Nanao and Kobayashi Chunshui, the murderer coveted their beauty, but he didn't dare to express his love blatantly.

Therefore, when the other party appears in the murderer's psychological safety field, or triggers a certain criminal element, the murderer's lurker personality is activated, and he follows and kills the other party.

On the contrary, for Yoshisho Motota, Chado Taihu and Hui Lihua, they were all killed by the murderer who invaded his territory. Whether it's a bridge, an apartment, or a madhouse, these are certainly not places where the murderer lives, and they are not so-called psychological safety zones.

But they accidentally triggered a certain element of crime, activating the murderer's predator personality, so the murderer brutally killed them. ”

After speaking, Fire Buddha Xiuyi said with great emotion: "This is a criminal with an extremely serious split personality, his latent personality craves physical stimulation, is reckless, timid, and careless, so he has left many traces of crime; And his predator personality, calm, meticulous, and ruthless, erased all traces of crime, leaving no clues. ”

Suddenly, he looked at Kamio Kaede with a shocked expression, and his tone was a little excited, "This is a very unique criminal, if you can thoroughly analyze his criminal psychology and methods, then it will leave a strong mark in the history of world crime research!"

I even suspect that as the murderer continues to act, he may have inspired a third or fourth personality, or perhaps it has already appeared! ”

"Stop, stop!" Kamio Kaede had to interrupt the expert's fantasy and asked, "I admit that your imagination is rich, but what I want to understand is that if the murderer has these two personalities, then what are the criminal elements activated?"

Or why did he choose these five people to do it, and what charming qualities did they have in common that attracted this serial killer? ”

The Fire Buddha Shuichi asked, "Do you know what a crime mark is?" ”

Kamio Kaede naturally knows that the so-called crime mark is a sign with distinct symbolic meaning left by the serial killer at the crime scene, maybe the victims are all women, maybe the victims like to wear red dresses, maybe the victims have homophiliacs, and so on.

For example, Richard Rewa Ramirez, one of the world's most notorious ten serial criminals, is known as the chief disciple of the devil, and his unique mark of crime is to leave an inverted five-pointed star at the scene, perhaps on the wall, perhaps in the mirror, or even carved on the victim's body with a knife, the meaning of this five-pointed star, no one has yet cracked it.

and Jeffrey Damour, nicknamed the Milwaukee Monster, a real-life version of "The Silence of the Lambs", whose crime was marked by dating a person of the same sex through social media, then kidnapping, becoming a cannibal doctor, and finally being headshot in a Wisconsin prison for harassing a black inmate in the same cell.

More such as Picton the Pigsty Knight, Suttcliffe the Yorkshire Butcher, Rhodes the Vampire, Chase the Puppet Demon, Lee Chun-jae Lee Chun-jae in Hwaseong South Korea, Wayne the Circus Clown......