In Conan, people have a brain option system.

Chapter 88 Doubts
In Sogabe Ryo's personal lounge.

Conan carefully observed the dead body of Sogabe Ryo.

"Sogabe Ryo was shot twice, once in the arm and once in the forehead."

"The bullet wound was in the 'lower middle forehead', which means it was in the middle of the forehead just above the eyebrows."

"Since there was no wound on the back of Sogabe's head, this was a blind wound where the bullet remained in his body."

"It is initially determined that the bullet penetrated the frontal lobe and damaged the middle cerebral artery."

"Whether the brain stem was damaged is unknown, but damage to the middle cerebral artery can lead to massive intracranial hemorrhage and a rapid increase in intracranial pressure."

"In this case, Sogabe Ryo would have died quickly, regardless of whether his brain stem was damaged or not."

"There is no doubt that the cause of Sogabe's death was the gunshot wound to the forehead."

By observing Sogabe Ryo's wounds, Conan quickly determined the cause of his death.

"Also, the wound on Sogabe's arm showed signs of life, so he must have been hit in the arm first, and then in the forehead."

Masumi Sera was also observing Sogabe Ryo's body. She determined the order in which Sogabe Ryo was shot based on the movements on his arm.

At the same time, she found a bullet embedded in the floor and a flying shell.

Masumi Sera picked up the shell with her gloved hands and examined the bottom.

"It uses a 9mm FMJ, so it's a pistol."

Masumi Sera frowned, feeling more and more the danger of this case.

I never thought that someone would bring a gun into the exhibition area of ​​this film festival.

"Although Sogabe Ryo was shot in the arm first and then in the forehead."

"But there are signs that prove it was definitely not the murderer who accidentally hit his arm."

"Because if it had been a miss, the bullet would not have been embedded in the ground at this angle, but would have flown backwards."

While Masumi Sera was observing the wound on Sogabe Ryo's arm and the bullet on the ground, Conan had already examined Sogabe Ryo's entire body.

"How's the situation, kid?"

Sera Masumi looked at Conan with a serious expression.

"We checked and found that apart from the two gunshot wounds, there were no other injuries on Zeng Wobu's body."

As Conan spoke, he grabbed Sogabe Ryo's sleeve again, lifted his right arm, and showed the dead man's palm to Sera Masumi.

"Not only that, there was no trace of injury on Sogabe's hands. It was obvious that he was shot without any defense or ability to resist."

"Combined with the judgment you just made, Miss Sera, the murderer should be an acquaintance who can make Sogabe let down his guard."

"There is one more thing that cannot be overlooked. Sogabe and Takasaka, who died yesterday, were sitting at the same table at the dinner yesterday."

"In this case, there should be some connection between these two cases."

Sera Masumi nodded, agreeing with Conan's opinion.

She gently pressed her fist against her lower lip and thought:
"In this case, there are four suspicious points in this case."

"First, since Sogabe and Kousaka knew each other, the murderer should have killed them for the same reason. But why did Sogabe and Kousaka die in completely different ways?"

"Second, what was the murderer's motive for killing Sogabe?"

"Third, if he could make Soga let down his guard, why did he go to the trouble of shooting him in the arm? Wouldn't it be more efficient to just shoot him in the forehead?"

"Fourth, why didn't the murderer attract anyone's attention when he opened fire?"

Masumi Sera vaguely felt that if she could figure out the cause of Tsunekazu Kousaka's death yesterday.

Perhaps we can solve the mystery of this series of cases.

But a pity.

Even if the autopsy is expedited, it will take nearly a week to produce the results.

"We don't have the time to wait for the Metropolitan Police Department to issue the autopsy results this time. If we can't find the real culprit quickly, there may be other people who will be killed!"

Sera Masumi said anxiously. "Regarding the fourth point, this is easier to explain."

Conan said.

"A standard 9mm handgun firing typically ranges from 160-170 decibels."

"When a silencer is added to a pistol, the decibel level is usually reduced to 130-140 decibels."

"If we use subsonic ammunition, the volume of the gunshot will be further reduced."

"The murderer must have closed the door when he committed the crime. In addition, the personal lounge is far away from the exhibition hall, and the sound of the projection room can be heard from time to time."

"In this case, as long as the pistol is equipped with a silencer and uses subsonic ammunition, the sound of the gunshot can be completely covered up by the speakers in the screening room so that it will not be noticed by the tourists in the exhibition hall."

As Conan spoke, he also looked up at Sera Masumi.

"The murderer must have planned all this long ago. This is pure murder!"

"The murderer must be someone acquaintance who could make Soga let down his guard, and he must be covering up something by killing people."

"The key to solving this case lies in the first three points of doubt you mentioned, Ms. Sera."

As Conan spoke, a drop of sweat dripped down his chin to the ground.

He reached out and wiped his neck and forehead, which were already covered in sweat, then raised his head and looked sharply at the air conditioner in the room.

"Normally, the temperature in the exhibition hall and the screening room is maintained at around 20-25 degrees Celsius, but someone deliberately turned on the air conditioner in the room to 32 degrees Celsius."

"Usually there is only one reason why the murderer does this, which is to speed up the transformation of the corpse and accelerate blood clotting, and enhance the oxidation reaction in the blood, so as to cover up the actual time when the deceased was killed."

"But if you want to cover up the time of the victim's murder by controlling the temperature in the room, it would only make sense if the body was found long enough from the time of the murder."

"Now that Zeng's troops have clearly not been dead for long, turning on the air conditioner has left a flaw."

"According to the high temperature of 32 degrees Celsius, the dark red color of Sogabe's blood at this moment, and considering that he must have been alive before the last movie started"

"The time when my unit was killed should be between 9:30 and 11:10."

"If you only knew the visitors who entered and left this exhibition hall during this period of time,

Conan raised his wrist, glanced at the watch on his wrist, and made a judgment.

However, he was interrupted by a hesitant voice behind him when he was halfway through his words.

"But the problem is, there are no cameras in the exhibition hall or in the personal lounge. How can we determine who enters and leaves the exhibition hall?"

Conan was startled when he heard this and quickly looked back.

He saw Suzuki Sonoko supporting her knees with her hands, bending over and looking at him.

"Sister Yuan Yuanzi, and Sister Xiao Xiaolan?!"

Conan was a little panicked.

I don't know how much of my reasoning was heard by Suzuki Sonoko and Mao Li Ran.

Before Suzuki Sonoko could become suspicious, Masumi Sera took the initiative to speak and direct her attention.

“Why is there no camera installed in such a large exhibition hall?!”

"Wouldn't this be a safety hazard?"

"Well, because during last year's film exhibition, someone in charge of monitoring the film uploaded undisclosed film information to the Internet."

“As a result, starting this year, no cameras were installed in the exhibition hall.”

Suzuki Sonoko answered.

"There are no cameras installed indoors, which means there are cameras outside, right?"

Sera Masumi asked.

“I’m not sure if there is one directly facing the entrance of the exhibition hall, but there should be some at several important intersections.”

Masumi Sera watched Suzuki Sonoko recalling her past and thought to herself:
"In this case, those who had the opportunity to visit Sogabe's personal exhibition hall during this period, who have no alibi and are familiar with Sogabe, are suspected of committing the crime."

(End of this chapter)