In the living room of Masuo's house.

Officer Shiratori is ordering, standing at the door of the police.

Expand the scope of your search.

With an impatient expression, he said to Agasa Yuyuki and them, "Why don't you leave?" ”

Yuyuki Asasa asked Officer Shiratori rhetorically, "Officer Shiratori, why do you have to be obsessed with it, it was someone else who killed Miss Kayoko." It's not that Ichiro Masuo used some tricks to kill the deceased Kayoko Masuo. ”

Ichiro Masuo, who was standing on the side, heard Yuyuki Agasa's words.

immediately retorted: "You know, I was at the time of the crime. But in the Metropolitan Police Department. I don't have the ability to teleport, and the moment I kill my wife, I go back to the warning hall. ”

After Ichiro Masuo finished expressing his alibi.

Officer Sato opened the other one, which was slightly lower than the bookcase against the wall.

He said to Officer Shiratori, "It's strange why this bookcase is full of books. And this high bookcase is three layers empty. That's unreasonable. ”

After Officer Sato finished his opinion.

A policeman who searched the deceased's room, he hurried over.

He took a photo album and handed it to Officer Shiratori.

After taking the album, Officer Shiratori asked him, "Is there anything wrong with this album?" ”

The policeman holding the album, after opening the album.

After pointing to a few photos in the album.

In a confused tone, he said: "I don't understand why he is focusing on a certain person in a few photos in the album. ”

When Ichiro Masuo saw the album, he hurriedly said, "This is my wife's prank." ”

Then he snatched the photo album from the policeman's hand.

Conan looked at him with a rare nervous look.

So he asked Yuyuki Agasa: "What do you think is the probability that he is a murderer?" ”

After hearing Conan's questioning, Yuyuki Agasa replied cautiously, "I think he's suspicious." And as I said, it's a murder in a closed room. But what we're missing now is how to learn about his modus operandi. ”

After he finished speaking, he put a confused expression on his face.

Staring at the bike workout equipment in front of you.

Just as Yuyuki Asasa stared at the bicycle exercise equipment.

Ichiro Masuo suddenly made a strange movement and subconsciously licked the fingers of his right hand.

Yuyuki Agasa also saw his strange behavior, so he asked Conan, "His behavior is suspicious." ”

Conan nodded his approval of Yuyuki Agasa.

At the same time, he asked Yuyuki Asasa: "Do you think there is anything wrong with this bicycle fitness equipment?" ”

When Yuyuki Agasa walked to the bicycle gym equipment, ready to find a few interesting things.

Officer Shiratori is still insisting that this case is a burglary and homicide.

However, just after Officer Shiratori said that it was impossible for the dagger to fly to the victim's back on its own.

Conan immediately said excitedly to Yuyuki Agasa: "I know, your reasoning is correct, I believe in the fitness equipment of this bicycle." There's definitely something interesting to discover. ”

Sure enough, Yuyuki Asasa and Conan were on the edge of the axle of the bicycle gym equipment.

A kite string that had been wound several times was found.

When Yuyuki Agasa saw this kite string, he couldn't help but say to Conan in surprise: "Could it be that the deceased stepped on the pedal of the bicycle himself, and then let the kite string continue to wrap around the side of this wheel axle." In the end, after the kite string was stepped on by the deceased, the dagger flew out of the bookcase behind her and stabbed Kayoko to death. ”

When Conan heard Yuyuki's words, he nodded in approval.

At the same time, he motioned to Yuyuki Agasa to see if he could find anything interesting on the bookcase.

As a result, Yuyuki Agasa found several traces of pins being pierced on the top of the bookcase.

And there was a strange blood stain on the bookcase and the curtain.

So he told Conan what he had discovered.

Officer Shiratori saw Yuyuki Asasa with a strange gaze.

While staring at the bookcase in front of you.

Then he asked Officer Shiratori with a confused face, "Don't you think this bookcase is very problematic?" ”

Officer Shiratori walked behind the bloodstained bookcase.

I couldn't help but ask with a puzzled face, "What's wrong with this bookcase?" ”

When Officer Shiratori asks what's wrong with this bookcase.

In the room, Ichiro Masuo had a panicked expression on his face.

Conan saw his panicked expression, and a smile of excitement suddenly appeared on the corner of his mouth.

A paper knife was then made.

At the same time, Yuyuki Asasa said to Officer Shiratori: "Now, it is up to Conan and I to solve the so-called murder modus operandi in the closed room for you." ”

Officer Sato looked at Yuyuki Asasa and Conan, singing and harmonizing.

Suddenly said with a puzzled expression: "You are?" ”

Conan then asked Officer Sato, "Did you find out that the knife was a horizontal stab in the back of the deceased." And if someone sneaks up and kills them, it should be a vertical stab in the back of the deceased. ”

Officer Shiratori and Officer Sato couldn't help but be taken aback when they heard Conan's words.

Officer Takagi chimed in, "What Conan said makes sense. And this is also very much in line with the requirements of a locked room killing. ”

Officer Shiratori felt that it was the murderer who pressed the deceased to the ground.

Then the deceased is killed.

After hearing his reasoning, Yuyuki Agasa couldn't help but retort, "If what you say makes sense, then there should be a lot of sweat stains on the floor." And the location where the deceased's phone fell, don't you feel very strange. ”

Officer Sato also immediately remembered something.

He said to Officer Shiratori, "If I were the murderer, I would have hung up the phone after killing Miss Kayoko, instead of being on the phone all the time, but there would be no noise such as footsteps." ”

Shiratori couldn't help but smile awkwardly even after hearing Officer Sato's words.

At the same time, Yuyuki Agasa reasoned to Officer Shiratori, "That glass that was cut into a strange circular notch. It's very strange. And when he entered the house, his doors and windows were locked. This does not prove my original judgment that he is a murder case in a closed room! ”

Officer Sato after hearing Yuyuki Agasa's words.

I couldn't help but agree: "In this case, we need to re-check." ”

Officer Shiratori looked at Yuyuki Agasa's confident appearance.

So he directly confronted Yuyuki Agasa: "If what you said is right, then you can show me evidence." ”

Yuyuki Asasa pointed to the side of the axle of the bicycle.

Motioned for Officer Shiratori to take a good look.

As a result, after Officer Shiratori found the kite string, he asked Ichiro Masao, "Can you explain this kite string?" ”

Don't wait for Ichiro Masuo to explain the kite line.

Yuyuki Asasa took out the strange coil at the other end of the kite string.

Then he asked Ichiro Massuo: "Excuse me, can you explain this thing?" ”

Ichiro Masuo hurriedly explained, "Maybe it's a little friend from the other day, who came to my house to play a prank." ”

When Yuyuki Agasa heard this, he immediately retorted, "Yes, if we tape the dagger to the top of the tallest bookcase." Then at the top of the bookcase, glue a thumbtack. Next, attach a kite coil to the pushpin. The other end is tied to the axle of the bicycle gym equipment. As long as the deceased keeps stepping on the bicycle, then the dagger placed on the top of the cabinet will be? ”

When Officer Shiratori heard this, he immediately retorted: "The theory is correct, but the question is, when the deceased was riding on the bicycle gym equipment, she couldn't feel the resistance caused by the kite string." You must know that the quality of that cabinet is not light, how can it be easily pulled down by the kite string. ”

When Officer Sato heard this, he explained with a smile on his lips: "Don't you know that the fitness equipment of this bicycle will have the adjustment of pedal strength." As long as the adjustment is in place, then he will not feel the so-called resistance. ”

When Officer Shiratori heard this, he still felt that it was impossible.

When Officer Takagi heard this, he immediately said to Officer Shiratori, "I finally understand the reason why you keep looking at your watch at the Metropolitan Police Department." ”

Officer Sato also thought of something.

Then he questioned Ichiro Masuo, "I suddenly remembered something, why did you let us enter the room." Let's go to the second floor first. If I'm right. There should be a lot of books on the cabinet with the high wall. As a result, because of the time, you only have time to put the books in the lower cabinet, and then the high cabinet against the wall is still up, and there will naturally be three layers of space. ”

When Ichiro Masuo heard this, he quickly retorted: "Even if what you said is correct, I won't have time at all." Another point is that the dagger fixed on the cabinet should still be on the cabinet. ”

When Yuyuki Agasa heard this, he sneered at him and said, "Yes, that's right, but the shelves on that cabinet can be raised." What if we stuff the second and third layers with books, and the first one fixes daggers? ”

Ichiro Masuo saw Conan and almost restored his modus operandi.

He finally retorted to him, "Can't he see the dagger on the top of the cabinet?" ”

In the end, Yuyuki Agasa retorted to Ichiro Massuo, "What if you put a few books on the top of the cabinet." Also, how can there be strange blood stains on the top of the cabinet. ”

Conan also took out his right hand and asked his injured index finger, "What's wrong with your index finger?" Is there a pin in your pocket that holds the kite string in place? ”

As Conan spoke, after the evidence that overwhelmed the camel's last straw.

Ichiro Masuo could only honestly tell everyone the reason for his crime.

After Officer Sato listened to Ichiro Masuo's words, she suddenly remembered something.

So he smiled evilly and said, "I finally understand the secret of drawing circles on the photos in the album." Because the figure who draws the circle is your accomplice. And you're the only one who can understand the inner workings of the bank, so do you have anything else to say? ”

Masuo Ichiro, who was exposed, could only honestly confess the whereabouts of his accomplices.

As the police caught the remaining gangsters.

The so-called, 100 million yen robbery case was also successfully solved.

Officer Shiratori, standing at the gate of the Metropolitan Police Department, looked at the beautiful sunset in the sky.

I couldn't help but say to Officer Sato, "Officer Sato, can I treat you to French cuisine at night?" ”

Officer Sato glanced at Officer Takagi with a nervous expression.

He expressed his refusal in a tactful tone.

Officer Shiratori saw her obvious refusal.

I could only bow my head in great frustration and turn around and leave in the distance.

Officer Sato looked at the back of Officer Shiratori leaving.

He motioned to go to a nearby snack bar and eat oden.

When Officer Takagi heard this, an excited smile appeared on his face.

However, when Officer Takagi prepares and plans to have a happy night out.

Officer Twilight, who suddenly came out of the Metropolitan Police Department, invited everyone to a big dinner together.

When Officer Sato heard this, he immediately nodded in agreement.

Although Officer Sato wanted to invite Officer Takagi to go with him.

But Officer Takagi, who thought too much, could only say very speechlessly that he would continue his work in the afternoon.

At eight o'clock in the evening, in the office hall of the Metropolitan Police Department.

Yuyuki Agasa, who had been waiting for a long time, said calmly to Officer Takagi who was lying on the table with a depressed face, "Things are not as bad as you think. And Officer Twilight is already married, could he do something to betray his wife? ”

Hearing Yuyuki Agasa's persuasion, Officer Takagi immediately returned to his normal expression.

Began the work of the so-called recording of confessions ...