The famous criminal in the world of Conan

An unusual long knife, a tape recorder, and a squeezed bottle......................

Bai Masong seemed to have thought of something. He turned his head, looked at the door connecting the living room and the bedroom, and then looked at the open lattice window.

Also, there were corpses in a straight line with the door and lattice windows.

Bai Ma Song called Gao Mushi over,

"Takagi, go under this window and see if there is any heavy object like a stone weight with a rubber band on it."

Bai Masong pointed at the lattice window of the bedroom and said to Takagi Wataru.

"Okay, Chief Hakuba."

Although Takagi Shigeru didn't understand Baimasong's thoughts, he also knew that it was right to follow Baimasong, the big boss, at this time.

After Bai Masong gave instructions to Takagi Wataru, he also walked out of the bedroom with the plastic bottle and came to the corridor again.

He compared the plastic bottle with the blanket in the corridor and found that his hypothesis was fully verified.

At this time, Bai Masong was just waiting for news from Takagi Shigeru.

Soon, Takagi Wataru came back with a weight.

It is worth mentioning that the weight is not the usual type. It is more like a long and thin iron block with a small ring on it and a rubber band tied to it.

"Inspector Hakuba, is this the thing?"

Takagi Wataru asked.

"Yes."

Bai Masong nodded, took the weight from Gao Mushi and examined it carefully.

After reading it, Bai Masong said to Officer Megure,

"Inspector Megure, bring them all here. I have solved the mystery of the locked room."

"what?!"

Inspector Megure was surprised. As expected, Brother Hakuba has always been trustworthy.

"Okay, I'll go get everyone over right away."

.................................................. .....

Not long after, Inspector Megure led everyone to another suite.

The layout of this suite is exactly the same as the deceased's room. After Bai Masong asked the manager, he took this room for demonstration.

At Hakubamatsu's request, Inspector Megure took everyone directly to the bedroom of the suite.

When everyone came to the bedroom, they could see that Bai Masong used a pillow to act as the dead person for demonstration.

At this time, a thirty-centimeter-long knife was also stuck on the pillow.

Seeing that everyone was present, Bai Masong began his story.

"Before I talk about this secret room method, let me sort out the clues for you first."

"First, the long knife on the body of the deceased. Second, the plastic bottle with a ring containing the key. Third, the open lattice window. Fourth, the deceased fell between the lattice window and the bedroom door. Fifth, the tape recorder playing screams. Sixth, the one-centimeter carpet in the room. Seventh, the seven-centimeter carpet in the corridor. Eighth, there is a gap under the door of the suite. Ninth, the lights in the suite are off."

Bai Masong bent his fingers and combed the hair of everyone present bit by bit, and then continued speaking.

"First, let's talk about the fifth point, the recorder playing the screaming sound. This is very important."

"Have you ever thought about why you were so eager to open the door?"

Bai Basong's question made the manager who opened the door at that time, Hanai, Kimura, and Koshimizu Nanatsuki all lower their heads and think.

"Because of the screams!"

Koshimizu Nanatsuki said,

"It was because of the screams that we felt something dangerous was happening inside, so we couldn't wait to ask the manager to help open the door."

"That's right,"

Bai Masong nodded and continued

"That's what the murderer wanted."

Then, Bai Masong turned to the police officers present and asked,

"Everyone, do you remember the murder case in the bathroom a few days ago? At that time, Miss Qingdao Quandai asked Detective Maori to come to her house and used Detective Maori to create the illusion that the door of the bathroom was locked with tape."

"So, this case is also..." Sato Miwako said thoughtfully.

"Yes, in this case, the murderer also took advantage of this."

Bai Masong affirmed,

"Before you guys opened the door, Yueshui, although this place was locked, it was not a secret room. However, once you opened the door, this place became a secret room."

After listening to what Bai Basong said, Nanatsuki Koshimizu also lowered her head and began to think. She was actually very smart and capable. She just needed some guidance now.

Nanatsuki Koshimizu was thinking, but Inspector Megure, who was already over 40, had no time to think.

He fully demonstrated his ability to be a supporting actor and couldn't wait to say,

"Brother Bai Ma, stop keeping us in suspense and tell us your technique!"

Seeing this, Bai Masong said nothing more and took out a rubber band and a weight. The weight was the one Gao Mu brought back.

"The chamber of closure technique works like this."

"First, we need a relatively long and elastic rubber band. First, we need to pass the thin and long weight through the lattice window."

"Then, holding the weight in one hand, use your other hand to pass one end of the rubber band through the grid and then through the small loop on the weight, wrapping it around the small loop to make sure they are locked tightly."

"Put the rubber band through the small loop again and pass it through the square next to the previous square and bring it out."

"Then, take the other end of the rubber band and pass it through the small loop on the plastic bottle. This time, don't wrap it around, just pass it straight through."

As he spoke, Bai Masong picked up a plastic bottle, which he had taken directly from the hotel. It was the same one as the one in the secret room.

"After you put them through, pull the rubber bands at both ends together and tie them up, making sure they are tied tightly."

"Next, we just need to stretch the rubber band that has formed a loop. Put it on the long knife that is inserted into the dead person's body, but don't let the long knife touch it."

"Then, the rubber band that had passed over the long knife was stretched further and further, all the way out of the bedroom door and out of the suite door."

As Bai Masong spoke, he kept moving the plastic bottle, pulling it again and again until he got out the door.

Following Baimasong's actions, everyone followed him and walked out.

Because there was a gap in the suite door, the rubber band connected to the plastic bottle could pass through.

Bai Masong waited until everyone came out, then he held the plastic bottle in one hand and closed the door of the suite with the other.

Secret room technique

"The last thing is, after we closed the door, the plastic bottle was stuck outside the room by the suite door. We took out the key, locked the door, put the key into the plastic bottle, and took the carpet in the corridor to cover the plastic bottle. Then, all the arrangements were completed."