In Conan, people have a brain option system.

Chapter 54: Time of Murder
Ten minutes ago.

Inside the laundry room of the Empire Theatre.

Megure Jusan, Chiba Kazunobu, Mori Kogoro and several police officers present listened to Sera Masumi's reasoning.
Know the murder weapon used by the murderer to strangle the victim.

"Then the last thing left is to determine the time when the deceased was killed and lock in the time period when we need to confirm the suspect's alibi."

As Megure Jusan was speaking, he heard Conan's childish voice in the laundry room:
"Hey! There are red spots on the back of this dead brother!"

Everyone in the room looked in the direction where the sound came from.

Then I saw Conan wearing a red bow tie.

He actually lifted up the clothes of the deceased and stared at the deceased's back with a surprised expression.

“Hey! What are you doing again, you little brat?!”

Kogoro Mouri rushed forward, grabbed Conan by the back of his collar and threw him away.

"That's a dead body! Besides, moving the body around might destroy important evidence!"

Kogoro Mouri looked at Conan and said with some annoyance.

"No, thanks to little brother Conan, we should be able to determine the time of the victim's murder."

Detective Chiba Kazunobu walked forward as he spoke, lifted the body of the deceased from the side, and then lifted up the clothes on the deceased.

Then I found out that it was just as Conan said.

Many reddish and lavender patches appeared on the deceased's back.

"This is livor mortis, which usually appears within half an hour to two hours after a person dies, depending on the ambient temperature."

Masumi Sera walked over to the body and squatted down. After observing the corpse spots on the back of the deceased, he explained.

"Livor mortis is a phenomenon in which blood settles to lower parts of the body after being still inside the body."

"When we found the deceased, he was lying on his back, so the blood naturally sank to his back."

"If my guess is correct, the same cadaveric spots should also appear on the deceased's buttocks and hind legs."

Upon hearing this, Chiba Kazunobu also lifted up the dead man's pants and nodded:

"Yes."

"In other words, the deceased remained lying on his back after death," said Kogoro Mori.

"Yes."

Sera Masumi nodded.

"If a body is moved after death, the livor mortis at the original location will partially or completely disappear and re-form at the new location."

"These changes can help infer whether the body has been moved."

Masumi Sera reached out his hand to the dead man's back.

She stretched out her fingers and pressed the corpse spots on the dead man's back through her gloves.

It was found that after the light red corpse spots were pressed, the color would fade quickly.

"The livor mortis on the deceased's back still has the characteristic of fading after being pressed, so it can be judged that this is still in the early stage of livor mortis."

"Although the deceased had livor mortis, he did not suffer from rigor mortis."

"We can determine that the deceased died within two hours."

"Many criminals know that rigor mortis will set in about two hours after death, but many do not know that livor mortis will set in half an hour after death, and therefore believe that the police have no way of determining the time of death of the deceased."

Megure Juzo nodded and added.

"Since this body only has livor mortis and no rigor mortis, that means the deceased should have died about half an hour ago?"

Kogoro Maori analyzed, stroking his chin with his hand.

"No!"

Conan once again denied Kogoro Mouri's judgment.

"Sister Shira just said that depending on the ambient temperature, the appearance of corpse spots will also change." "Uncle, don't you think that the temperature in this room is much colder than other rooms?"

"Indeed."

"It seems so."

When the police heard Conan's words, they all nodded.

Sera Masumi also continued to explain:
"There was no air conditioning in the laundry room, and the indoor temperature was undoubtedly lower than the normal ambient temperature of 20 degrees Celsius, so this was considered a 'low temperature environment'."

"At this temperature, the appearance of livor mortis will be greatly delayed."

"If that's the case, then the time of death should not be about half an hour, but about one to two hours."

"In addition, I have just determined that the corpse spots are still in the 'early stages', so the correct time of death should be an hour ago."

"That is, the period from before the second act of the stage play begins to when the second act just begins."

"In addition, that Akikawa said that he was notified to go to the laundry room at the beginning of the second act, and he left only after watching the performance of the second act."

"If this is true, then he would not have the conditions to commit the crime."

"Because he was still in his dressing room when the deceased was killed."

"And because Akikawa arrived at the laundry room much later than the murderer expected, the murderer fled the laundry room in a hurry."

"There is absolutely no way he could have properly disposed of the murder weapon under these circumstances."

As Sera Masumi said this, he also clapped his hands lightly.

"Now the whole picture of this case is clear. Next we should find out the real culprit!"
-
"Excuse me, what was Mr. Nishihara doing at the beginning of the second act?"

Masumi Sera looked at Koichi Nishihara, whose expression was obviously shaken, with a smile on his face and repeated his question once again.

"I was in my lounge."

Nishihara Koichi answered.

"Can anyone prove this for Mr. Nishihara?"

"No."

At this time, another police officer in charge of questioning came back and reported to Megure Jusan:

"I have just confirmed what Ms. Yoko said with Director Nakamura. He confirmed that Mr. Nishihara and Mr. Akikawa auditioned for the same role and were rejected."

"In addition, Director Nakamura mentioned another point."

"That is, given Mr. Nishihara's status in the Japanese film and television industry, it is a bit strange for him to come here to audition for a minor supporting role."

After hearing what the police said, the artists around started talking.

"Indeed, I was a little surprised at first. It was strange that Mr. Nishihara would play a minor supporting role in a stage play."

"Yes, yes, and Mr. Nishihara has no experience in acting in a stage play before."

When Nishihara Koichi heard the discussions of the people around him, his already confused heart began to become even more panicked.

Conan looked at Nishihara Koichi's reaction and raised the corner of his mouth slightly.

Then he came in front of Okino Yoko, raised his head, and showed a naive look:

"Ms. Yoko, didn't you warn Mr. Nishihara not to contact Brother Akikawa again?"

"I think Miss Yoko didn't just warn Mr. Nishihara because he auditioned with Brother Akikawa and was rejected, right?"

Yoko Okino looked at Conan with an embarrassed look.

After a moment, she whispered:

"Conan is right."

"Mr. Nishihara committed two violent assaults during his middle school and high school years."

"I was worried that Akikawa-kun might get hurt, so I warned Mr. Nishihara."

(End of this chapter)