In Conan, people have a brain option system.

Chapter 238 Medication Time (22)

Masumi Sera went with Ginzo Nakamori to check the surveillance video.

It turned out that just as the police officer who called earlier had said, at about 0:22 this morning, Takashi Tsukino was dragged into the collection room of Scarlet Heart.

Takashi Tsukino had already fallen into a coma when he entered the collection room.

Moreover, his hands and feet were tied up by the man covered in black only after he entered the collection room.

"Mr. Tsukino's mouth was gagged when he entered the room."

"Although the criminal in the video had his back to the camera, blocking Mr. Tsukino."

"But it can also be clearly seen that he did not do anything like drugging Mr. Tsukino."

"That means Mr. Tsukino had already fallen into a coma before 0:22."

Masamune Sera pointed at the footage in the surveillance video and spoke softly.

Nakamori Ginzo and the policeman nearby nodded when they heard her words.

Although Ginzo Nakamori had no objection to what Masumi Sera said, there was something he didn't understand in his heart.

"Is there any significance in knowing how long Mr. Tsukino has been in a coma?"

"some."

Sera Masumi said.

"It is difficult to arouse with slight stimulation, the heart rate is normal but the breathing rate is slowed down, and there are no obvious external injuries on the body."

"Such characteristics are consistent with the use of sleeping pills to fall into a deep sleep."

"So I guess Mr. Tsukino fell into a coma because he was given sleeping pills."

"That's right, Miss Sera, you have already made these judgments just now."

Nakamori Ginzo nodded again.

Now Takashi Tsukino has been carried away by medical staff.

I believe the results of the medical tests will be revealed soon, and then we will know whether Sera Masumi's judgment is wrong.

"Sleeping pills can be roughly divided into three categories."

"Benzodiazepines like diazepam, non-benzodiazepines like zolpidem, and barbiturates, which are common in older sleeping pills."

"Benzodiazepines have a longer duration of action, about 6-12 hours."

"The duration of action of non-benzodiazepines is about 3-8 hours."

"Barbiturates are also 6-12 hours."

"From the surveillance video, we can see that Tsukino took the sleeping pills before midnight, and now it is close to 0 a.m., so at least 9 hours have passed."

“So non-benzodiazepines can be ruled out, and the other two drugs are almost at their end of time.”

"It means Mr. Tsukino will wake up soon."

Sera Masumi explained.

Although through the surveillance video and the previous hints from Toru Amuro about the case,

This has led to great progress in solving the case.

But after all, the police currently have relatively little substantive evidence and not many clues.

Therefore, the testimony of the victim, Takashi Tsukino, becomes particularly important.

"Once the doctor detects the drug component in Mr. Tsukino's body that caused him to fall into a coma, we can use the half-life of this component in the human body to calculate the time when Mr. Tsukino was ingested with the drug."

"In this way, we can further pinpoint the time when the criminal will strike."

As Sera Masumi said this, he secretly glanced at Conan beside him.

Sleeping pills, half-life.

What familiar words.

It was because she and Conan ignored the change in the half-life of triazolam in patients with liver dysfunction that they once regarded Akikawa Sosuke as a criminal. Such obvious evidence was in front of them, but she and Conan did not notice it.

But it is precisely because Conan trusts his own judgment very much that he is not as suspicious as himself.

This is why he did not notice that Akikawa Sosuke was different from ordinary people.

Masumi Sera withdrew his gaze and watched the police in front of him slowly drag the progress bar of the surveillance video.

Then I saw the prisoner in black standing in front of the display case of the Scarlet Heart.

But it is not known whether the criminal knew the location of the hidden camera.

His back was blocking the camera.

This resulted in the camera not capturing the scene of the criminal stealing the Scarlet Shadow Heart.

This scene lasted for about 1 or 2 minutes. After the prisoner in black left, the Scarlet Heart Ruby in the display case disappeared.

"Officer Nakamori, you should know how to open this display case."

"If you know how to open the display cabinet, how long will it take to open it?"

Sera Masumi asked.

"It should only take a few seconds if the unlocking conditions are met."

Nakamori Ginzo said.

He discovered that when Masumi Sera asked him about the conditions for unlocking the display cabinet, he did not ask him about the specific conditions for unlocking the cabinet.

This made him feel very comfortable.

Although the ruby ​​has been stolen now, they will definitely put it in this display cabinet once they recover it.

By then, the fewer people who know how to unlock the door, the better.

Therefore, Sera Masumi's way of asking questions was very appropriate.

"So, was this person slow in opening the display case?"

Sera Masumi asked.

By confirming this, it can be determined whether the criminal has mastered the method of opening the display cabinet.

"It's hard to say. Although the time he took to unlock the door was longer than the shortest time, it was not slow either."

Nakamori Ginzo frowned.

"Besides, if he doesn't know how to unlock the door, it will be impossible to open it no matter how long he spends."

"All I can say is that maybe he is not very familiar with this method of unlocking."

While Masumi Sera and Ginzo Nakamori were discussing, Conan pointed at the screen and said:

"Officer Nakamori, look, even though this criminal has concealed his appearance, we can tell from his body shape that he should be about the same size as Mr. Tsukino."

Upon hearing this, Ginzo Nakamori hurriedly observed the body shape of the mysterious prisoner in black and compared his body shape with the body shape of Takayasu Tsukino in his mind.

The result was exactly as Conan said, and it seemed to be very similar to Takashi Tsukino.

"Perhaps, it is really as Miss Sera guessed."

"Does Mr. Tsukino have a brother of similar size?"

Conan asked.

"I remember that there was. Mr. Tsukino seemed to have a younger brother who was two years younger than him. His name was Tsukino Masayuki."

"But his brother rarely appears in the media, so I don't know what his exact figure is like."

"Besides, we cannot directly investigate Mr. Tsukino Masayuki based on speculation without any substantial evidence."

"After all, Mr. Tsukino Masayuki also holds a high position in the Tsukino Group."

(End of this chapter)