"There are pliers in the warehouse." Omiya Yanko looked pale and led the police downstairs to find the pliers and take them back upstairs.

"Crack!!"

The pliers clenched the chains and made a creaking sound. After all, this pliers are not hydraulic pliers specially used for unlocking, and they are a bit laborious to use.

"Hit!"

"The chain is open!"

The fat Officer Chiba and Shin-sun blushed and finally opened the chain with the clanging sound.

Just as the lock was opened, several policemen rushed in immediately, staring around with agility, guarding against the murderer who might be hiding in the room.

“Not found in the living room.”

“Not found in the bedroom.”

“Not in the cabinet.”

“Not under the bed.”

The police officers in the Metropolitan Police Department carefully searched for any place that could accommodate human beings, the cabinets under the stove, the interior of the drum washing machine, and any other suspicious places.

Given the strangeness of prisoners in the Kexue world, even the ceiling was checked.

But no matter where it is, there is no one.

No figure was found.

The murderer was not in this room, but the chain that could only be locked from the inside was locked.

"Kill people in the secret room?!"

This word popped up in the mind of Officer Takagi.

In the Kexue world, most prisoners like to kill people in secret rooms. They try their best to arrange the impossible murder scene in secret rooms, and then the detectives see through it in one fell swoop. It is like a experience pack to the detective.

Police Officer Megura and others also remembered to kill people in the secret room.

After assassinating Taken Village, the murderer left and created a scene of murder in the secret room, which would lock the chain locks that could not be locked from outside!

"You continue to search, and the personnel from the forensics class collect information such as fingerprints on the site."

Officer Meguchi waved his hand and arranged the work on the scene.

Kudo Shinichi looked in the room a few times, but didn't see any tricks and then observed the cut chains.

"Xinyijun..."

Ran Mouri bent down and looked at Shinichi Kudo who was squatting in front of the door.

“…”

Kudo Shinichi was seriously looking at the chain design behind the door.

The principle of this chain lock is that one end of the chain is tightly mounted on the door door, and the other end has a counterweight that can be tied to the metal bolt of the door frame.

It is a very simple design, but it is very effective in defending people outside. Even if someone wants to hit the door, it will be blocked by a padlock.

Even if you want to reach out and pull out the door bolt, it is impossible to use human arms and wrists, not to mention that there is another mechanism on the bolt.

"Will it be done with ropes or threads..." Kudo Shinichi was wondering how to lock this key lock from outside the door.

It is indeed possible to have a universal rope mechanism in the detective world, but Shinichi Kudo has not yet figured out how to do it.

"Will Shinichi-kun be the criminal who has established an agency on the chain?" Maori Ran had some reasoning ability. After all, one of his parents was the former policeman and the other was the undefeated queen of the legal field. In terms of reasoning ability, Maori Ran was stronger than many policemen.

"What's the meaning?"

"For example, the rings and rings of chains can be disassembled, just like keychains."

"This is impossible." Kudo Shinichi shook his head and denied, "The chains are welded and cannot be disassembled and installed."

"That's how it is."

"But why did the prisoner create a scene for murder in a secret room?" Ran Maori noticed the key point: "If the secret room kills, there must be a reason to do so."

"Well, generally speaking, killing people in the secret room is to pretend to be accidental or suicide." Kudo Shinichi thought while answering Xiaolan's question, "or by creating a secret room, we can prevent us from obtaining some key clues... There must be a reason for the murderer in the secret room."

"But there are other possibilities."

A male voice rang over Kudo Shinichi's head.

At this time, Mitotsuki also squatted down at the door and stared at the chain locks with Kudo Shin-chan: "For example, the murderer deliberately created a secret room after killing the person so that the police who came to investigate would be defeated."

This kind of prisoner can be said to be another way to please the prisoner.

Crime will make them feel happy, commit crimes out of happiness, rather than specific revenge or love killing.

Especially in passionate crimes, such as one day when the prisoner is in a bad mood or is in a good mood, driving in the wild, killing a lonely traveler and leaving, this passionate crime is the last case the police want to encounter.

Kudo Shinichi looked at the same classmate who was also well-known in reasoning skills and said, "It may be right if you have this... Mito, do you have a clue?"

"..." Mito Tsuki didn't say anything, as if immersed in his own thoughts.

"I have an idea..." Nabi Shiyuan, who was an unrelated person, also entered the scene at some point. As the editor of the mystery novel, she raised her hand weakly, "Will the prisoner lock the key from the inside and then leave the room through some method, like leaving the balcony?"

"There is also this possibility." Takagi Suka came over at some point. He agreed with Nabi Shin's thoughts and nodded.

Takagi walked to the balcony and stood up and looked up and down. "The prisoner could snatch the walls of the exterior wall and slowly climb down, or to the rooftop. After all, the sixth floor is the top floor, and it is also very convenient to reach the rooftop...ah!! Will the murderer still hide on the rooftop now?"

Takagi's words opened up the other policemen's thoughts, and Officer Meguru waved his hand: "Hurry! Go to the roof to take a look."

After killing someone, hiding the deceased body in the water tank on the roof, or hiding himself on the roof, all this is possible!

The prisoner might just wait for the police to leave and then escape from the roof of the hiding building, so that it would create an impossible secret room to kill people.

Except for the two policemen guarding the door, everyone headed towards the rooftop for a moment.

But the roof was also empty and there was no figure.

The water tanks and distribution rooms that can be hidden have been checked and are empty.

"Damn it! There is no one on the roof!"

"Where did the prisoner hide, or he had left in some way."

Standing on the roof in late autumn, the cool breeze was blowing, and Nabi Shiyuan, who was only wearing work clothes and no coat, couldn't help but shivering.

"Then, now there is only the possibility of climbing downstairs from the room on the sixth floor? The balcony is not blocked. Since Miss Taken Village can fall from the balcony, it is naturally possible for another person to climb out."

"Then I'll check if there are any signs of climbing on the wall."

Officer Memu stood on the roof and was blowing the wind, and he had a headache. Why did he always encounter such abnormal murders: "Also, call Miss Guankou over. If the prisoner really climbed down from the balcony, Miss Guankou would have noticed it."

The case was in a deadlock for a while.

Kudo Shinichi carefully observed the rooftop and paid attention to every suspicious corner.
Chapter completed!