After police officer Sato saw sparks and lightning all the way, the car finally stopped in front of Masuo's house.

After getting out of the car, Masuo opened the door anxiously and rushed in without even having time to change his shoes.

"Two police officers, please go to the second floor to check. I'm in charge of the first floor."

"Okay. Forensic Doctor Okino, let's go."

"knew."

After going up to the second floor, Officer Sato carefully searched every room. However, Okino seemed to be uninterested and unmotivated. Fortunately, the serious Officer Sato did not notice.

After an estimated five or six minutes, all the rooms on the second floor had been searched, and Mrs. Masuo was not found.

"ah!!"

At this time, the two people were about to go downstairs to take a look at the situation on the first floor, but suddenly Mr. Masuo's frightened scream was heard. The two looked at each other and hurriedly ran to the first floor.

"Mr. Masuo, what's wrong with Mr. Masuo?"

Following the sound, the two people came to the living room on the first floor. They were surprised to find a woman lying on the floor with a knife stuck in her back. It looked like she was no longer breathing, while Mr. Masuo had a look on his face.

Sitting on the ground in horror, he kept mumbling, 'This is impossible, this is impossible, this is impossible'.

Officer Sato walked to the body with a solemn expression, checked Mrs. Masao's pulse and found that she was dead.

"Hey, Forensic Doctor Okino, the rest of the work will be left to you. I'll notify the people from the forensics department to come over."

"Leave it to me." Okino took out the white gloves that had been prepared from his arms. He shook his head and walked towards the body. Then Conan, who had just disappeared, appeared from behind Okino and walked to the body together.

"Where did your kid go just now?"

"Nothing, I went to check out the other rooms on the first floor."

"Have you found anything?" Okino asked casually.

"Yes, someone opened a hole in the corridor window."

"A hole?" Okino raised his eyebrows and paused in his hand movements.

"Um."

"Forensic Doctor Okino, how is the matter?" At this time, Officer Takagi finally rushed over with a large number of police officers. Unfortunately, their trip was in vain, but they could barely act as doormen and maintain order.

Seeing that Officer Takagi was sweating profusely, Okino motioned to him to take a breath, and then slowly told him what he knew.

"That's what happened. Officer Takagi and I are going to conduct an autopsy next. Mr. Masao, please take me out first. After all, the scene later will not be so pretty."

"Eh?" Officer Gao Mu was stunned for a moment. He knew the general process of Okino's autopsy, and there was no need for an autopsy. How could it not look good? But...

Okino blinked, and Officer Takagi immediately understood and immediately left the room with Mr. Masao.

"Oh, okay I get it!"

After watching Masuo and Officer Takagi leave, Okino was about to conduct an autopsy on the body, but Conan's voice rang in Okino's ears at this moment.

"Is there something wrong with that person?" Conan seemed to have noticed Mr. Masao's slightly strange behavior before, and Okino had just deliberately dismissed him, so he asked this question.

"Of course there is a problem. He should be the murderer and has not escaped."

"What? He is the murderer, how can you be sure!?" Conan was shocked and couldn't help but ask.

Okino checked the condition of the corpse and answered Conan's questions.

"Of course, what happened this time is already obvious, isn't it? And according to [Aoyama's Fourth Theorem of Materialistic Logic], there is a 90% chance that Mr. Masuo is the murderer."

"Hey, what the hell is Aoyama's fourth theorem of materialist logic? And I've always been curious about who Aoyama is. Why have I never heard of him?" Conan naturally didn't believe Okino's words.

, but he had another thought in his mind.

‘This guy must have some clues that he doesn’t know about.’ Conan secretly made up his mind to find the decisive evidence first.

Why do you say that? In Conan's mind, there is never any evidence when going out into the wild to solve a case. He only relies on a few blind calls. But the most annoying thing is this. The other party can guess the murderer with just a few blind blows. How can the detective survive?

ah.

The time when the body was found was 9:15 in the morning. The cause of death should be the stabbing in the back of the deceased. After that, Okino checked the muscles of the deceased and found that the limbs of the deceased were very stiff. At first glance, it seemed that he had been dead for a long time, but after more than ten years,

I clearly heard the other party's voice on the phone a few minutes ago, which was very contradictory.

Thinking of this, Okino frowned and continued to explore the condition of the corpse, and soon made new discoveries.

The deceased seemed to have been doing strenuous exercise before his death. As a result, in addition to a lot of sweat on his body, his clothes were obviously wet. There was an automatic bicycle next to the body. Mrs. Masuo must have been riding a bicycle before she was alive.

As for the time of death, it should have been twenty minutes ago. At that time, everyone was searching the office of Section 1 and heard Mrs. Masuo’s screams with their own ears.

Just in case, Okino also secretly opened his magic eyes to confirm his guess, and the result was correct.

After investigating here, the case gradually came to light. Mrs. Masuo was killed while riding a bicycle. As for the problem of muscle stiffness, because the deceased had done strenuous exercise during his lifetime, the amount of muscle in his muscles after death

The protein will coagulate quickly.

Therefore, this is the reason why rigor mortis is so severe even though the body was dead less than half an hour ago.

So this situation can occur under certain circumstances, and this has been proven medically.

In addition, what made Okino curious was how Mr. Masao killed the deceased. Apart from an electric bicycle, there was only one bookshelf in this room, which was located directly behind the bicycle.

The lower part of the bookshelf was filled with books, but the upper part was empty. Could it be that the murderer was hiding on the bookshelf.

How is this possible? How could there be such a vicious murderer in this world?

"How about Conan, have you found any valuable clues?"

Conan had a straight face, touched his chin with his hand and said seriously: "There are three strange things."

"Oh, which three points?" Okino raised his eyebrows. He also wanted to hear Conan's reasoning and see if it was consistent with what he had discovered.

Hearing this, Conan smiled confidently and raised a finger: "The first point is the small hole in the window at the end of the corridor that I mentioned before. If this case was committed by an outsider, it would indeed be possible to pass through that small hole.

Open the window, then walk here and kill Mrs. Masao. However, the possibility of this is almost zero."

Okino nodded and motioned for Conan to continue.

"The second thing is this knife. The direction of this knife is so weird. It's actually horizontal."

"Yes, I have also noticed this. If the prisoner attacked Mrs. Masuo from the front, Mrs. Masuo would probably open the window and escape out of instinct. In this way, the knife should be vertical."

"That's right. Next is the third point, which is this bicycle."

"Is there something wrong with the bicycle?" Okino said before he could check the bicycle.

"Look at this, is there a circle of fishing line on it?" Okino walked to the side of the bicycle and took a quick look, and he saw circles of fishing line around the bearing.

"Well, you are right about these three points, but you also forgot one thing."

"What is it?" Conan looked at Okino curiously.

"Don't forget, when we came here, Mr. Masuo separated me and Officer Sato without hesitation, and he went to the first floor to check by himself. Although I didn't observe much of him entering the room at the time, I

I think...it should definitely be here."

"The most important thing is that Officer Sato and I searched the second floor for five or six minutes before Mr. Masao screamed. Don't you think this is strange?"

"This...I see, this is what happened!" Conan suddenly realized, "Damn it, I forgot such an important clue. It seems that your guess before was indeed correct. There is a possibility that Mr. Masuo is the murderer.
Chapter completed!