In Conan, people have a brain option system

Sera Masumi followed Nakamori Ginzo to check the surveillance video.

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

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

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

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

"Although the prisoner in the video has his back to the camera, blocking Mr. Tsukino."

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

"This means that Mr. Tsukino fell into a coma before 0:22."

Sera Masumi pointed at the picture in the surveillance video and said softly.

Nakamori Ginzo and the policemen on the side also nodded when they heard her words.

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

"Is there any significance in knowing the time Mr. Tsukino fell into a coma?"

"some."

Sera Masumi said.

"It is difficult to wake up under slight stimulation, the heart rate is normal but the breathing rate has slowed down, and there is no obvious trauma on the body."

"Such characteristics are consistent with falling into a deep sleep after taking sleeping pills."

"So I speculate that 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.

Presumably, the results of the medical test will be announced soon, and then we will know whether Sera Masumi's judgment was wrong.

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

"Benzodiazepines like diazepam, non-benzodiazepines like zolpidem, and barbiturates commonly used in older sleeping pills."

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

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

"For barbiturates, it's the same 6-12 hours."

"It can be known from the surveillance video that Tsukino took sleeping pills before 0 o'clock, but it is now close to 9 o'clock in the morning, and at least 9 hours have passed."

"So the non-benzodiazepines can be ruled out, and the other two are almost there."

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

Sera Masumi explained.

Although through the surveillance video and Toru Amuro’s previous reminders about the case,

Great progress has been made in the detection of 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.

"After the doctor detects the component of the drug in Mr. Tsukino's body that caused his coma, they can calculate the time when Mr. Tsukino was given the drug based on the half-life of this component in the human body."

"In this way, the time for the prisoner to strike can be further determined."

Sera Masumi said, and secretly glanced at Conan beside him.

Sleeping pills, half-life.

What two familiar words.

It was precisely because she and Conan initially ignored the changes in the half-life of triazolam in patients with liver dysfunction that they once regarded Akikawa Kyousuke as a criminal.

With such obvious evidence in front of them, neither she nor Conan noticed it.

But it was precisely because Conan believed in his own judgment that he was not as suspicious as himself.

This is why he didn't find anything different about Akikawa Kyusuke from ordinary people.

Sera Masumi withdrew his gaze, and then watched the policeman in front of him slowly dragging the progress bar of the surveillance video.

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

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

His back blocked the camera.

This resulted in the camera not capturing the scene of the prisoner stealing the Heart of Scarlet Shadow at all.

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

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

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

Sera Masumi asked.

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

Nakamori Ginzo said.

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

This made him feel very comfortable.

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

The fewer people who know how to open a lock, the better.

Therefore, Sera Masumi's method of questioning was a good grasp of proportion.

"Then the time this person opened the display cabinet was too slow?"

Sera Masumi asked.

By confirming this, it can be determined whether the prisoner is proficient in opening the display cabinet.

"It's hard to say. Although it takes longer than the minimum time for him to open the lock, it's not too slow."

Nakamori Ginzo frowned.

"Besides, if he doesn't know how to open the lock, he won't be able to open it no matter how long it takes."

"It can only be said that maybe he is not very proficient in this method of unlocking."

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

"Officer Nakamori, look. Although this prisoner has concealed his appearance, you can tell from his body shape that he should be similar to Mr. Tsukino."

Upon hearing this, Nakamori Ginzo quickly observed the mysterious black-clothed prisoner's body shape carefully, and compared his body shape with the body shape of Tsukino Takashi in his mind.

The result is indeed as Conan said, it seems to be similar to Tsukino Takashi.

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

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

Conan asked.

"I remember that Mr. Tsukino seems to have a younger brother who is 2 years younger than him. His name is Tsukino Masayuki."

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

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

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