Conan's Almighty Extraction

Katsuo Masuo, who was identified as the murderer by Shiraiwa Maha, was in the Metropolitan Police Department at the time of the crime and had sufficient alibi. If he wants to prove his murderer, he must deduce how he was more than ten miles away from his home. Kilometers away, the criminal method of killing his wife remotely.

"Look, the dagger on the back of the corpse."

At this time, Bai Yanzhenyu noticed an abnormality on the corpse again, and quickly reminded: "Under normal circumstances, if you use a dagger to kill someone, the dagger should be inserted into the body vertically, but the dagger on the dead's back is inserted horizontally." It goes in and doesn't fit the way a dagger is held."

"what?"

Shiratori Police Department and others were shocked when they heard the words, and immediately looked at the back of the deceased, and found that, as Shiraiwa Maha said, the dagger was inserted horizontally into the body.

Officer Takagi squatted down, carefully looked at the angle of the dagger, and said in surprise: "It is true. If the murderer attacked from behind, he should have stabbed the victim with the dagger straight in his hand."

Officer Sato also realized something was wrong, rubbed his chin and analyzed: "If the murderer attacked from the side, it would make sense, but in this way, the murderer will definitely be discovered by the deceased when he approaches, and it is impossible to stay where he is and let the other party kill her."

"The answer is very simple. The murderer attacked the victim from behind, pinned her to the floor, then used his knees to press the victim's neck and waist, and then killed her."

Probably eager to establish the majesty of the police department in front of everyone, the Shiratori police department hastily explained without careful consideration, intending to prove the correctness of his previous reasoning.

Maha Shirayan shook his head slightly, and denied: "Police Shiratori, if the victim was pressed on the floor, in order to escape the restraint, he must have struggled desperately. However, there are no sweat stains left by the struggle on the ground near the corpse."

"This." Under Shiraiwa Maha's rebuttal, the Shiratori police department was at a loss for words for a while, not knowing how to explain this doubtful point.

However, the discovery of this suspicious point made Shiraiwa Maha realize a new possibility, that is, the murderer who killed Mrs. Masuo was probably not a living person, but an institution that could be remotely controlled by Katsuo Masuo.

According to this line of reasoning, the agency must be located directly behind Mrs. Masuo, that is, the three-story empty bookshelf, and the remote control is probably the phone call from the Metropolitan Police Department to Mrs. Masuo.

Thinking of this, Baiyan Maha began to survey the scene, carefully inspecting every place, not daring to make any omissions.

Not long after, Shiraiwa Maha made two new discoveries.

The first place is at the top of the bookshelf. There is a trace of blood on it, and the right side of the blood is very neat. There should be something like scotch tape there, which was taken away after the incident.

The second place is the center shaft of the exercise bike's chainring, with a lot of thin ropes like kite strings wrapped around it, and a small circle is tied to one end of the thin ropes, which is probably used to hang somewhere of.

These two new discoveries helped Bai Yanzhenyu deduce the criminal method used by the murderer, and immediately said with a smile: "Everyone, I already know the murder method used by the murderer."

"Eh? Bai Yan, tell me!"

Hearing what Shiraiwa Maha said, Police Officer Takagi and others immediately brightened their eyes, and urged Shiraiwa Maha to tell the truth quickly.

"The murderer first fixed the dagger on the top of the bookshelf, hooked it with a very long thin wire, and then fixed the other end of the thin wire on the pedal of the exercise bike, and then used the dark bookshelf curtain to wrap the dagger Hide it with the thin thread to prevent Mrs. Masuo from discovering the mechanism."

"When Mrs. Masuo starts exercising as usual, the thin thread will slowly roll up as the gears rotate, and finally pull the bookshelf down, stabbing the unsuspecting Mrs. Masuo."

"Because the bookshelf next to it is full of books, the direction of this bookshelf will not be shifted, and the place where it fell will only face Mrs. Masuo."
"In this way, it also explains why the dagger was inserted horizontally into Mrs. Masuo's back."

Baiyan Maha's reasoning caught everyone's eyes, and they immediately analyzed the feasibility of this method.

After hearing Shiraiwa Maha's words, Masuo Katsuo's forehead suddenly broke out in a row of cold sweat, his body trembled slightly, and he took out a handkerchief to wipe the sweat on his forehead.

But when he put the handkerchief back into his pocket, he couldn't help frowning, quickly took out his finger, put it in his mouth and sucked it a few times, as if he had been pricked by something.

After a short analysis, Officer Shiratori frowned slightly, and questioned: "If you wrap the thin wire around the exercise bike according to the method you said, the deceased should feel that the pedals are getting heavier, even if they don't see the weight behind them." The agency will definitely detect something abnormal, right?"

"do not you know?"

Officer Sato looked at Officer Shiratori in surprise, and explained: "The original design of this kind of exercise bike will gradually increase the user's load. Since the victim exercises every day, he naturally doesn't care."

Officer Shiratori smiled awkwardly, and continued to ask: "Then when you found the body, did the bookshelf fall to the ground? Besides, instead of sneaking in here and making these troublesome designs, it's better to ambush here, and then It's easier to kill the dead."

"This is indeed much simpler, but it requires the murderer to stay at the scene, and if you use the mechanism, you can obtain a perfect alibi. As for the problem of the bookshelf not falling down?"

Speaking of this, Shiraiwa Maha looked at Masuo Katsuo with a smile on his face, and asked jokingly: "Mr. Masuo, what do you think?"

"I don't know about this. When I came in, I didn't see the bookshelf fall down." Masuo Katsuo laughed dryly, and a thin line of cold sweat broke out on his forehead that had been wiped just now.

"haha, really?!"

Bai Yanmao narrowed his eyes slightly, and asked in a cold voice: "Then tell me, why did you ask Officer Sato and Officer Takagi to check the second floor after we entered the room, but you entered the living room alone, and After staying in the living room for dozens of seconds, did you scream?"

After hearing Shiraiwa Maha's doubts, Masuo Katsuo's complexion changed drastically, and he faltered and explained: "I was frightened by my wife's body, so I froze there for a while, and waited to recover. Afterwards, I cried out in fright.”

Officer Sato heard what Shiraiwa Maha meant, and asked in disbelief: "Baiyan, you mean that Mr. Masuo killed Mrs. Masuo?"

"Yes."

Shiraiwa Maha smiled lightly, and said with certainty: "The murderer is Masuo Katsura!"