Significant progress has been made in the investigation of the case.

On the one hand, Chen Yan's reasoning about the case has at least taken shape.

this point is very important.

Only when the case reasoning is successful can it be possible to follow the clues, analyze the clues, and construct the entire criminal process.

After all, before Professor Sun Muzhi came, Chen Yan couldn't even figure out how the murderer committed the murder.

But now, the other party's motive has been found.

Once you have a motive, you can narrow down the scope of your investigation.

The most important thing now is to find out who, or rather where, Wang Hu, Yin Chengwen, Takada Cheng and Xu Dongtian received hypnosis training.

And, it has to be fast.

According to the chronological order of the four people committing suicide, it was basically one a week.

Originally, Chen Yan thought it was the murderer who did it deliberately.

However, it now appears that this is related to the content of certain addictive drugs in the victim's system.

Of course, Chen Yan has no clue as to why the other party no longer provides drugs to ensure that the game video cannot trigger hypnosis.

Maybe there is not enough medicine, or maybe the trial of the medicine has been completed and no more trials are needed.

There are many possibilities.

The worst possibility is that the other party has completed the drug trial and has fled or even left the country.

That's why Wang Hu and others were allowed to have the drug content in their bodies drop to critical levels.

In this way, once exposed to the game, hypnosis will be triggered, and then in a state of high drug hallucination and hypnosis, the purpose of silence can be achieved through suicide.

God doesn't know and ghosts don't know.

However, the progress of the case also hit a bottleneck.

Chen Yan knew nothing about the four people receiving hypnosis.

The lives of the four of them have no intersection.

Could it be that he was hypnotized in four places?

This possibility is very small.

The cunning rabbit's three caves are certainly helpful for escaping.

But, on the other hand, it also means that the chance of rabbit hole exposure increases exponentially.

Kunming First Hospital.

Compared with the three people who have died, Xu Dongtian is still the most important clue to the breakthrough of the case.

"Mr. Xu, where are the places you have visited frequently in the past six months?"

According to Professor Sun's judgment, hypnosis is time-sensitive.

Generally speaking, half a year is a watershed.

The time is too short and the effect cannot be achieved.

If the time is too long, the effect will also weaken.

Because any life has a self-protection mechanism, and hypnosis itself is an oppression of self-awareness.

After a certain period of time, the self-awareness will increase the resistance to hypnosis.

In other words, as the resistance to hypnosis increases and the difficulty of hypnosis increases, the effect of the same method will be reduced.

This watershed time is usually half a year.

"I don't have any places I go often," Xu Dongtian shook his head: "I'm quite busy with work, and I don't have any hobbies..."

"Hey!"

Um?

Xu Dongtian, who was talking, suddenly made an ouch and interrupted his conversation.

"Mr. Xu, what's wrong? Do you feel like you are addicted to drugs again?"

Chen Yan was about to call the doctor, but Xu Dongtian stopped him: "It's okay, it's just a sudden toothache. It'll be fine after a while."

"toothache?"

"Oh, it's just a toothache. I have cavities in my back molars..."

"This thing is so painful that it kills you," Xu Dongtian covered his cheeks and spoke a little unclearly: "In the past few months, I have gone to the dentist several times to get it done, but it has never been done properly..."

Chen Yan nodded. The toothache was indeed very sore.

"I told the dentist that I might as well just pull it out, but he said no, and you see... I've been going back and forth several times, but it still doesn't work..."

Well, dentist, I struggled a lot...

Um?

Chen Yan was slightly startled.

"what did you just say?"

"Oh, I said the dentist didn't want to pull my teeth. I tried to do it several times and it still didn't work..."

dentisit?!

Chen Yan suddenly felt like a bolt of lightning struck in his mind!

He remembered that Yin Chengwen seemed to have gone to the No. 1 Hospital to see a dentist, but he did not see a doctor afterwards.

Chen Yan didn't pay attention at all at the time.

However, who said that dental treatment must be done in a regular hospital.

There is also a dental clinic.

That kind of small clinic doesn’t have any medical records for you to check!

Moreover, the detectives also checked Xu Dongtian’s medical treatment and medication history.

There is no such thing as going to the dentist.

Why, because he didn't go to a regular hospital, so he naturally had no medical records.

Valley

However, Xu Dongtian has obviously seen a dentist!

"Follow me to the morgue!"

…

The bodies of Yin Chengwen and Takada Cheng are kept in the morgue of the First Hospital.

The corpse in the freezer was extremely hard.

Fortunately, the two people were smiling before they died, with their mouths opening and closing slightly. Although they couldn't see clearly what was going on in their mouths, they were able to put the video probe in.

In Yin Chengwen's mouth, there are two decayed teeth with signs of repair.

The dentist from the First Hospital is observing the condition of the teeth in the video: "The deceased's teeth were recently coated with fluoride, so he should have seen a doctor."

"Next!" Chen Yan's face was solemn and he clenched his hands tightly.

Takada Cheng.

The probe was inserted into the mouth, and after a while, the situation inside the mouth appeared in the video.

"Within a month, the deceased had his teeth cleaned and his cavities repaired!"

Gan!

dentisit!

I see!

All three people have dental diseases.

This is what they have in common.

"Notify Team Leader Lin to immediately blockade the dental clinic where Xu Dongtian is visiting!"

"At the same time, apply for support from the armed security team!"

"The other party may have a firearm, so be sure to pay attention to safety!"

You know, the other party is conducting trials of a new type of drug.

Anything related to du is definitely not less dangerous.

The presence of firearms must be taken into account.

…
To be continued...