Due to Fang Zheng's speeding all the way, their group was basically the first to arrive at the Dusk Villa. In fact, when Kogoro carefully parked Fang Zheng's car in front of the main entrance of the Dusk Villa, there was no other car around.

"I just can't understand if these rich people are mentally ill."

After getting out of the car and looking at the Hulunbuir Villa in front of him, Fang Zheng shook his head.

"Why do one, two, three, or four people like to build their houses in such an uninhabited place? It's inconvenient to go out to buy things. If someone gets sick, it will probably be too late to get to the hospital. If you provoke some bandits, they will block your retreat and kill your whole family without any reaction..."

"Who knows? Rich people just think differently."

Hearing Fang Zheng's words, Maori Kogoro also complained. After all, he had experienced many similar cases. He had to admit that Fang Zheng was right. Every time a homicide happened in this kind of shabby place, calling the police was useless and doctors were hard to find. He didn't understand what the brain circuits of these rich people were.

Of course, it is quiet enough. If someone died here for ten days or half a month, no one would notice it.

While chatting idly, the group walked up the stairs, then Kogoro Mouri walked up and knocked on the door, and soon a maid opened the door.

"Welcome, Mr. Maori and his party, right? I didn't expect you to come so early... Please come in."

"Are we the first ones here?"

Hearing the maid's words, Maori Kogoro was also refreshed, while Conan sighed helplessly at the scene. He was not a child anymore, so why was he still fighting for the first place...

"Yes, you are the first group of guests I have seen since I came here. The other guests have not arrived yet."

"Hahaha, I see."

Hearing this, Kogoro Mouri also laughed, and then walked into the annex. Conan widened his eyes and looked at the maid using the Oscar-winning skills he learned in Hawaii.

"Big sister, I want to meet the owner of this place. It's rare that he invites us to dine in such a luxurious place. I want to thank him."

"That's true. May I ask where the owner of the mansion is now?"

Xiaolan also hurried over to cooperate at this moment - it seems that this couple really has some tacit understanding.

"this……"

Faced with the two people's questions, the maid looked embarrassed.

"Actually, I haven't seen the master."

"Why?"

Hearing this, Kogoro Mouri also asked curiously.

"Don't you work here? How come you didn't see anyone?"

"It's like this. Actually, I was just hired here... so..."

“But there will always be someone to interview.”

“It’s a bit strange to say.”

At this time, in response to Kogoro Mori's question, the maid also spoke in confusion.

"I came to apply for the job after seeing the job advertisement in the newspaper. Because the conditions were very generous, many people signed up. But when I walked into the room, I didn't see the interviewer. I only saw an open computer and a guest list. However, when I was looking at the list, a line of words appeared on the computer saying that I was accepted..."

"that's all?"

Kogoro Mouri frowned, and Conan and Ran listened carefully. After all, Kogoro Mouri didn't know, but the two of them knew that the mastermind behind the invitation was Vermouth, the black organization that made Conan smaller. Maybe they had some clues.

Moreover, this hidden and exposed look is indeed quite similar to the Black Organization.

Unfortunately, this maid was only a temporary one. She could not explain clearly what this place was or why the master had asked them to come here. She only said that the master had invited several detectives to the dinner party. Before that, everyone could do whatever they wanted...

So everyone had no choice but to hang out in this villa.

And while the others haven't arrived yet, Fang Zheng also plans to give Xiaolan a shot of prevention.

After all, no matter how good a detective you are, you are still afraid of ghosts.

"By the way, since you are bored, why don't I tell you the story of this place first."

"Why?"

Hearing Fang Zhengguo's words, Maori Kogoro, Conan and Xiaolan were also stunned.

"Do you know where this place is?"

"Of course, I wouldn't come here without doing some research beforehand...it's just that the information is really limited."

At this point, Fang Zheng also sighed. In Conan's era, the Internet was not advanced enough, and a lot of information and intelligence could not be found on the Internet at all. If it were somewhere like the game world, Fang Zheng could just use his personal terminal to hack into it and even check his entire family clearly, so... digitization is necessary!

So Fang Zheng had no choice but to send Umbrella's intelligence department to investigate. Of course, it was nothing more than trying to get close to government agencies, visiting nearby residents, investigating newspapers and magazines, and inquiring about some intelligence rumors...

This efficiency is certainly far inferior to searching on the Internet. Fang Zheng has become accustomed to scanning other people's family trees with his personal terminal. He feels very depressed when he suddenly encounters such a thing. It's like a godfather who is used to driving a Mercedes-Benz and caring for high school girls, but suddenly travels back to the primitive age. There are no dinosaurs to ride on and no shoes to wear, and he has to fight saber-toothed tigers. It's so depressing.

As he spoke, he took out a piece of paper.

"According to the clues I found, this villa belonged to a wealthy man named Karasuma Renya, who died half a century ago..."

"Wait, Karasuma Renya?!"

When Xiaolan heard the name, she didn't react, but Mouri Kogoro called out, and Conan also frowned.

"Well, at least it once belonged to him..."

Fang Zheng held the report in front of him and continued speaking.

"Everything in this annex was specially ordered by Karasuma Renya... In short, it's like I said, rich people are willful and their thinking circuits are different from others. But what I'm going to say next is a bit shocking... Well, Xiaolan, you better be prepared."

"Eh? Is it scary?"

Hearing this, Xiaolan couldn't help but shrink her body, while Fang Zheng nodded.

"According to rumors, a horrific incident occurred in this annex forty years ago. At that time, this annex had gathered celebrities from all walks of life in finance and economics. Of course, on the surface, it was to commemorate the tycoon who died at the age of ninety-nine, but in fact it was an auction for the art collection of Karasuma Renya during his lifetime."

Having said this, Fang Zheng glanced around.

"The auction was scheduled to last three days and three nights. On the second night, during a rainstorm, two uninvited guests arrived at the entrance of the annex. They claimed to be lost travelers and hoped to stay overnight. Of course, the person in charge of the annex refused at first, but when the other party gave him a cigarette, he suddenly changed his mind and let the two people in."

“…”

Hearing this, Kogoro Mouri, Ran, and Conan all gasped, while Fang Zheng continued speaking.

"After that, the other guests were also bewitched by these two people. At first, some people were arguing over these two uninvited guests. But then a strange scene happened. One of the guests at the auction threw away his auction items and ran away as if he had seen a ghost. A woman cried as if she was begging for forgiveness. Someone else stabbed herself excitedly. Then, the whole venue turned into a hell. Everyone started to snatch the auctioned artworks, and some even killed each other. In the end, after one night, only eight corpses and a dozen unconscious guests were left in the villa, and the two mysterious people disappeared along with the auction items."

“…This is just a story, right?”

"Not really."

Xiaolan asked tremblingly, and Fangzheng shook his head.

"In fact, I smelled a strong smell of blood from the moment I entered this annex."

“Really?!”

"My nose is quite sharp, most people probably can't smell it."

Fang Zheng waved his hand and continued speaking.

"At least from what we saw before, the gate, corridor, living room, playroom, and all the places we passed by along the way had bloodstains, and the amount was far more than eight people. It is estimated that more than eight people died at that time..."

"I'm going to go out and have a cigarette to calm down."

At this moment, Kogoro Mouri also felt cold all over, and he felt uncomfortable looking at this empty playroom. He quickly found an excuse to slip out to relax. Xiaolan also wanted to leave, but Fang Zheng made a gesture and took Conan to sit on the sofa next to them.

"What do you think?"

Fang Zheng asked in a low voice while pretending to play chess with Conan.

"From what I've seen so far, I think the person who invited us this time should have nothing to do with the Black Organization."

Conan also thought about it and gave his own guess.

"The signature on this invitation is a pun. It's Kaito Kidd, but..."

"If Kidd had the guts to show up in front of me I would have beaten him to death."

That’s right, just as Fang Zheng said, Kidd didn’t have the courage to send a letter to him and Conan. If he provoked Fang Zheng, Kidd would die without knowing how.

"So the inviter this time is most likely disguised as Kaito Kidd, trying to attract the attention of us detectives."

"The reason why Vermouth tampered with this letter may be that she found out that this letter would be sent to Maori Kogoro. After all, with her status, it would be too careless to contact you directly."

Fang Zheng didn't believe that Vermouth would be that stupid.

"So this letter should have nothing to do with the Black Organization, but the clues contained in this letter should be related to the Black Organization, so Vermouth deliberately wrote her name."

Conan understood now, and Xiaolan also raised her own questions.

"Then could it be that this organizer is related to the Black Organization?"

"Impossible. If the person who invited us to the banquet is related to the Black Organization, then Vermouth is simply courting death by leaving her name on it. If one of us has nothing better to do and asks the organizer why Vermouth's signature is on it, she will basically be finished."

Fang Zheng shook his head.

"In comparison, I am more concerned about Karasuma Renya."

"You mean the rich man?"

"That's right."

Fang Zheng nodded.

"After you told me that the letter had Vermouth's signature, I sent people to conduct a series of investigations at the Twilight Annex. This guy named Karasuma Renya is indeed very suspicious, and the story I told you before... I have an idea."

Having said this, Fang Zheng narrowed his eyes.

"Maybe Karasuma Renya faked his death."

"So what you mean is that the tycoon didn't die at all, but pretended to be dead and sent people to take away the things in his villa?"

Conan frowned and thought for a moment.

"But that Karasuma Renya is already 99 years old, right? Other things can be faked, but age cannot be faked..."

"Are you sure? Think about Mermaid Island."

"……should?"

Thinking of the long-lived woman played by Shimabukuro Kimie, Conan's tone was not so certain.

"Even if it's true, that was half a century ago. I think that Karasuma Renya should have died a long time ago."

"hehe."

Hearing Conan's inference, Fang Zheng laughed and pointed at him.

"Have you forgotten how you became like this?"

"Of course it's because I took poison."

"So who developed the poison?"

"The Black Organization... Wait, you're not saying that the Black Organization developed this drug to actually make Karasuma Renya rejuvenate!!"

Thinking of this, Conan was shocked, and Xiaolan was even more stunned, feeling like she was listening to a science fiction novel.

"How is it impossible? You have always believed that the Black Organization developed this poison to kill people, and shrinking is its side effect. Why don't you think about it the other way around? In fact, the drug developed by the Black Organization may also be used to restore people's youth, and death is its side effect - but because the side effects are too serious, it cannot be put on the market. This kind of thing is actually very normal in the field of drug development."

"But that assumes that Karasuma Renya is still alive, and it's been half a century since he died!"

"In 1967, a wealthy man named James Bedford had advanced lung cancer and was incurable. So he decided to cryogenically freeze himself, hoping that one day in the future medical technology would be advanced enough to cure his lung cancer and then wake up and continue living. He was the first person in the world to receive cryonics treatment."

Fang Zheng said silently.

"Moreover, the idea of ​​cryogenically preserving life has been discussed in the academic community a century ago. Considering that Karasuma Renya is a wealthy man, it is natural for him to want to live forever. He is rich and willful. If he wants to do it, is it your business?"

“…”

Faced with Fang Zheng's question, Conan was speechless.

He really can't do anything about it!

"So what you mean is that in order to restore his youth, Karasuma Renya secretly established the Black Organization to research that drug, and announced to the outside world that he was faking his death. In addition to researching drugs, the Black Organization also infiltrated various fields in order to allow Karasuma Renya to regain the pinnacle of power after his 'resurrection'?"

"Very likely."

Fang Zheng nodded silently, but he still had something to tell Conan. According to what Xiao Ai and Ming Mei told him, their parents had also studied this drug, but in the end the rebel organization burned all the research data. Fang Zheng suspected that they might have learned the truth and knew that his drug was to be taken by Karasuma Renya, so they destroyed everything.

Moreover, since it is a drug, it must be tested before it can be used. Vermouth may be the victim of this drug, and the real function of APTX4869 should actually restore people to their youth and keep them young forever. This can also be seen from Vermouth. She looks only in her thirties, but according to Fangzheng's investigation, she is likely to be in her sixties or seventies.

In other words, if Conan, Ai and Vermouth are taking the same medicine, then each of them will embody two characteristics of the medicine.

One is to restore youth, the other is to maintain youth forever.

However, this drug is obviously not stable enough. Considering Vermouth's age, Ai and Akemi were not born when she took the drug, so she should have taken the drug that their parents had researched. Although this drug has the characteristics of "maintenance", it does not have the characteristics of "restoring youth".

After that, Akemi and Ai's parents may have truly developed an elixir of life, but after learning that the drug was meant to be given to the evil leader of the Black Organization, they naturally destroyed it.

Xiao Ai said that the medicine she developed was based on some of the remaining information from her parents, so Fang Zheng also made a deduction.

That is, Xiaoai's parents once made two drugs, one was an incomplete drug A, and the other was a complete drug B.

Later, drug A was given to Vermouth - this is not surprising, you can't give this kind of drug to your enemies, like in American comics, you find a passerby to do the experiment, and then create a superhero to cause trouble for you, such a stupid thing would be rejected by anyone with a normal IQ.

Vermouth is likely to be trusted by Karasuma Renya, so it is natural for her to "test the poison" as a confidant.

Unfortunately, the effect of drug A was not complete, so the Miyano couple made the complete drug B, but afterwards, in order to prevent Karasuma Renya from resurrecting, they destroyed drug B and the data. Ai got the remaining data of her parents, which is probably the part of the complete drug "B", so the APTX4869 she made has the effect of "rejuvenation".

Otherwise, there is no way to explain why Vermouth did not grow older, while Ai and Conan became smaller.

"So what do we do now?"

"I don't care what this owner wants to do, but there are probably some clues hidden in this annex. If we can find these clues, we may be able to discover where Karasuma Renya is hiding."

Having said that, Fang Zheng reached out and patted Conan on the shoulder.

"This mission is up to you, Detective!"