"Wha, what..."

Listening to Gao Yuan's words, there was a hint of speculation. Matsumoto Kiyonaga, Sato Miwako and others looked very surprised.

Gao Yuan continued:

"Since everyone here at that time had speculated whether it was the man who the boss said had had a conflict with the deceased and them, then the police at the time must have also investigated that man. After all, such a big thing as losing a gun is not a big deal.

It is possible to let go of any possibility. However, judging from the final situation, it cannot be the man who stole the gun.

“So, in this way, this gun theft incident becomes a ‘complete crime’ incident, right?

"To be able to complete such a crime without leaving any clues shows that the criminal who caused this incident is by no means simple. This is definitely not something that ordinary people can do...at least, it is impossible for ordinary people to steal a pistol.

of.

"Moreover, apart from stealing the pistol, he did not use the stolen pistol to cause any other incidents. It can be seen that his motive for stealing the pistol was not to do anything with the pistol, but more like...

“Show off or something!

"-Look, I can take the pistol from the policeman without being discovered. Isn't that the perfect crime?

"Probably, it's a similar feeling.

“So, combined with the ‘complete crime’ thing that the four people mentioned before, I have a feeling——

"Could this be an experiment conducted by one of them to verify the feasibility of 'complete crime'?"

In this way, listening to what Gao Yuan said, Matsumoto Kiyonaga, Sato Miwako and Takagi Wataru all looked at Gao Yuan in shock, and especially Matsumoto Kiyonaga, Gao Yuan could clearly feel the faint emanation from him.

The anger——

Probably, he felt extremely angry for such a joke-like reason.

Gao Yuan was thinking this, and since he had already reached this point, Gao Yuan simply explained the whole thing clearly at once, and then went on to say:

"This behavior is not only a display of one's ability, but also a bit of a show-off behavior. It should not be something that an older doctor or associate professor would do.

"I think this was most likely done by the student at that time, who is now the criminal psychology expert Pingdong Tangji. Because we talked about 'complete crime', maybe a few people had differences on this topic, and they were young and angry.

Sheng's Heidong Tangji wanted to prove the feasibility of "complete crime", so he committed this gun theft incident.

"However, after the incident, when the other people playing mahjong with him learned that he had done it, the older doctors and associate professors must have clearly known that his behavior was a crime, so they decisively told him

They made their position clear, so after that, they never played mahjong together again.

"In response to this, in the face of their attitude towards his behavior, and the fear that his stolen gun would be revealed by the two people who knew about it, and fearing that it would affect his future, Pingdong Tangji took the murderous step.

"As for the lawyers, probably because they were just starting out at the time when the incident occurred, they most likely did not express their position as decisively as those two people, and that is why they were not killed immediately as they were twenty years ago.

"But after five years, the lawyer may have experienced a lot and figured it out. After having a clear position on Pingdong Tangci's behavior, the lawyer wanted to persuade him, but it turned out that five years later,

Years later, he was also killed by Pingdong Tang."

In this way, after roughly explaining the reasons, Matsumoto Kiyonaga couldn't help but fall into thinking after listening to Gao Yuan's statement——

"So...will there be a five-year gap between the two? First, the older doctors and associate professors were killed twenty years ago, and then it took five years for the lawyer to be killed..."

At this moment, Matsumoto Kiyonaga has already believed the authenticity of Gao Yuan's conjecture, because it has explained too many details in the case very reasonably. As for——

"So, what's the matter with the whistle that the prisoner blows every time he commits a crime?"

This was something that the sacrificed Inspector Morimura kept talking about before he died. At this moment, Matsumoto Kiyonaga, facing Takato who had almost solved all the truth, still wanted to know this.

"Whistle?"

In this regard, after listening to Matsumoto Kiyonaga's words, Gao Yuan thought for a while and said:

"It is recorded in the file that when Officer Morimura found the suspicious vehicle driven by the murderer and went to check it, he heard the murderer playing the popular song "Let it be" at that time?

"This song is the last song of the British rock band 'The Beatles' before it disbanded. It just so happens that 'The Beatles' is a four-member band, and there are also four people playing mahjong. Therefore, this song is very suitable for the murderer Pingdong in the end.

Don’t you feel sad when you face the mahjong players who were so happy together, but ended up on such a separate road?"

So, Gao Yuan tried to analyze this, but the original work seemed to have no details of explanation at the end.

In response, Matsumoto Kiyonaga couldn't help but nodded in approval, feeling that the lofty analysis explained everything perfectly, and even such details were consistent and perfect.

Then, all that's left is to wait for Pingdong Tangji to be caught and see the third deceased lawyer, his child, to confirm the other party's voice.

At this time, Gao Yuan suddenly thought about it again and tried to ask the mahjong parlor owner:

"By the way. Do you have anything left here that they used when they played mahjong?"

"Huh? It's been twenty years, how could it be possible..."

"Ah! Yes!"

Just when Takagi Wataru felt it was impossible when faced with Gao Yuan's inquiry, the owner of the mahjong parlor answered directly, pulled out a set of mahjong tiles from under the counter, and said:

"These are the mahjong tiles they used when they played mahjong. However, after they had an argument with someone, several of the tiles inside were broken, so they could no longer be used. But because they were used tiles, they never used them.

I’m willing to throw it away.”

"So, that means it has the fingerprints of those four people on it, right?"

Seeing this, Gao Yuan recalled the details of the original work and tried to get the physical evidence.

In this regard, seeing the mahjong parlor owner preserving such key evidence, several police officers present couldn't help but look at each other in awe——

Surprisingly, such physical evidence can still be left behind!

So, just like that, when Officers Megure and Shiratori arrested Heitong-douji, based on the fingerprints on the mahjong tiles and the voice recognition of the third deceased child, they confirmed that Heitong-douji was the

After that serial murderer, this incident was resolved before the prosecution period ended.

In this way——

"The reasoning is over, let's start closing the case."

"Comprehensive evaluation of case closure: B"

"Knowledge: S"

"Logic: B"

「Social:C」

"The settlement is completed, the overall score reaches B, and the reward is 30."

"Detective Rating: Certified Detective"

"Bounty: 2300"

The settlement panel appeared again. Although because it was an original case, the solving process of copying the answers by myself would not get high scores, but at least the bounty was still rising——

Perhaps, I should solve more cases like this and find ways to accumulate more bounties. In this way, I can use the "world" with confidence and try to explore some of the things I want to know.
Chapter completed!