Chapter 271: Criminal Psychology

So-called psychological profiling is the understanding of criminal phenomena formed based on multiple disciplines such as psychology, sociology, and criminology.

It is an investigative act that analyzes material traces at a crime scene, psychological traces, and the life trajectory of victims to delineate the characteristics most likely possessed by the perpetrator.

In some deductions, the situation of a criminal analyzed by a detective based on clues is often a form of "psychological profiling."

Art comes from reality.

In the real world, it is already a common occurrence for police to analyze the specific characteristics of a killer based on the crime scene and the victim's situation.

It can be said that psychological profiling has provided a lot of help to the police.

But the facts are not absolute, because due to some "common sense" errors, some psychological profiles often produce certain deviations.

In Akiwara Yuto's past-life memories, whether it was the Silver Case or the Huacheng Case, the best time for arrest was missed at the beginning due to errors in psychological profiling.

But after hearing Akiwara Yuto's request, Assistant Police Inspector Soma's expression became strange.

As a professional police officer of the Metropolitan Police Department, although he usually liked to watch some detective dramas and was very fond of the TV series "Furuhata Ninzaburo" edited by Akiwara Yuto.

But he did not think that the other party, as a mystery writer, could really be of any help with this case.

However, Akiwara Yuto's social status was there after all, so after complaining in his heart for a while, he still handed him the stack of documents marked "Psychological Profiling."

"This psychological profile was just made yesterday and is planned to be announced at the press conference the day after tomorrow. I hope Teacher Akiwara will keep it confidential before then."

Akiwara Yuto nodded, then took the profile and began to read it carefully.

After reading it all, his brows furrowed tighter and tighter.

Because he discovered that this psychological profile was a bit presumptuous.

In the serial murder case of Huacheng in his past life, a large part of the Korean police's internal opinion on the killer was a "lonely bachelor" who was also a psychopath.

But it was only when the suspect was finally captured that they discovered the killer was already married.

Besides the Korean Huacheng case, similar problems also appeared in the Hubei serial rape and murder cases and the Gansu Silver case in his home country.

The killers finally captured all deviated slightly from the police's imagination; they were all married and did not show obvious resentment or violence toward women.

Such psychological profiling errors caused the police in these cases to not include the killers in the ranks of criminal suspects at the beginning.

It was not until DNA became popular and a large database was established that the real killer was caught.

And the "psychological profile" in Akiwara Yuto's hands defined the killer as a 25-35-year-old single man living alone, who was a pervert with violent behavior. This undoubtedly committed the same mistake as the Korean police in his past life.

He was silent for a moment, then voiced his own thoughts.

"Assistant Police Inspector Soma, why not include married men as well?"

Assistant Police Inspector Soma glanced at him and said seriously, "This is the opinion of our criminal psychology experts. In their view, a man with a family would not commit such acts."

"Not necessarily," Akiwara Yuto said. "If this person lives alone, he can completely avoid taking great risks to carry out highly complex killing acts in the external environment."

His voice rose quite a bit, "The reason he did this might be because he lacks such an environment."

Assistant Police Inspector Soma was speechless and didn't know how to refute for a moment.

However, he felt a bit embarrassed and felt even more that Akiwara Yuto was being a busybody.

Even if the case affected your movie filming, you can't vent your emotions on our Metropolitan Police Department.

Besides, you are just a mystery writer, not an investigator who is actually in contact with the front-line case, and the opinions you put forward are too presumptuous.

Akiwara Yuto saw Assistant Police Inspector Soma's impatience, so he explained, "Assistant Police Inspector Soma, psychological profiling relies on criminal psychology, and the latter is a constantly advancing discipline that is updated every year."

"In criminal psychology cases in Europe and America, there have even been phenomena of dual personality."

"Under the psychology of dual personality, these killers can usually treat people politely and work diligently, while hiding cruelty under this appearance. But in private, they generate killing desires driven by sexual impulses."

"So I hope to suggest to the task force to include some married men in the DNA testing targets."

After hearing these words, Assistant Police Inspector Soma hesitated.

In this era, Japan still had a heartfelt worship for Europe and America.

In fact, even the current police system was built by people sent by the United States to teach investigation techniques.

So after Akiwara Yuto brought out cases from Europe and America, he also took it seriously to a certain extent.

However, he still couldn't make up his mind about whether to suggest this to the task force.

Akiwara Yuto looked at his indecisive expression and said again, "Regarding the upcoming press conference, the Metropolitan Police Department must be under a lot of pressure, right?"

Assistant Police Inspector Soma was silent and nodded.

A serial murder case that has never been solved has become a mountain pressing on the head of the Metropolitan Police Department.

As a result, there is now another identical case, which will inevitably make the public increasingly dissatisfied.

Under such circumstances, if this case cannot be announced as solved, the public's dissatisfaction will inevitably be vented further onto the Metropolitan Police Department.

By then, being called incompetent would be considered light! Maybe some councilors will even get involved and propose cutting the budget!

Akiwara Yuto tapped the table with his hand and said in a deep voice, "If a socially prominent person expresses understanding and support for the Metropolitan Police Department, would it be of any help to you?"

Assistant Police Inspector Soma was stunned. If there was support from a socially prominent person, it would more or less help public opinion.

"Teacher Akiwara, could it be that you..."

Assistant Police Inspector Soma looked at Akiwara Yuto with a surprised look and asked in confusion.

Akiwara Yuto nodded, but made a request.

"As the price for helping the Metropolitan Police Department, I hope my proposal can be reported to the task force, and I suggest they take a look at the criminal psychology data on dual personality."

Assistant Police Inspector Soma weighed it back and forth for a long time, gritted his teeth, and finally agreed.

Akiwara Yuto looked at the other party's expression and sighed in his heart.

In fact, Akiwara Yuto's best choice now is to give up the movie, withdraw his investment, and leave the crew.

Although more than half of the 100 million yen invested has been spent, compared to the risks involved, this money is nothing.

But just when he wanted to do so, he remembered the desperate pleading in Utsumi Taku's words, as well as the shocking crime scenes he had seen before.

Under a special emotion, he decided to stand up and persuade the Metropolitan Police Department to change the psychological profile so that the killer could be caught sooner.

As for the movie "Memories of Murder," if the killer is never caught, he plans to keep it unreleased even after filming is finished.

But to be honest, although he made this suggestion, he also felt that the possibility of catching the killer was slim.

After all, with the population of eligible men in Shennaichuan County being at least over a million, even if his proposal is adopted, it is just adding some possibilities.

His mood was still not very good, so he bid farewell to Assistant Police Inspector Soma and left the Metropolitan Police Department...