Conan Rick's Investigator

There are not many investigation points at this murder scene. Apart from the mobile phone and the rope, nothing else can be seen.

But this place is obviously intended to be a secret room.

Since it is a secret room, finding the key is inseparable.

"Where does Mr. Hirasaka usually keep his room key?" Qin Zhibo asked the people at the door.

Several people looked at each other, and only the doctor slowly raised his hand and said, "It should be in the first drawer of the desk..."

Qin Zhibo looked at the doctor man and was probably convinced that the person closest to Hirasaka was the doctor man.

Qin Zhibo walked behind the desk, put on white gloves and rummaged around carefully. There were many things inside, but he did not find the key.

This place is very spacious and can be seen at a glance. The key can only be hidden in a closed space that cannot be found at a glance.

Qin Zhibo glanced around and noticed the low cabinet next to the door of the room.

I walked over and opened the drawer, rummaged around for a while, and found a bunch of simple-looking copper keys from under the notebook.

【Survey√】

[This is a set of room keys that can be used to lock the door, but it is deliberately covered with a notebook at this time]

The word "deliberately" in the investigation report was indeed added deliberately.

If the room key is in the room, the room is a secret room.

Judging from the various situations in the room, Hirasaka should have killed the blonde girl first while meditating below, then returned to the room, locked the door, and committed suicide by taking poison.

But the problem is that the placement of the key is too strange and does not conform to the daily habits of the deceased.

Moreover, a person who is desperate and ready to commit suicide, who can even throw the crime tools on the ground casually, should not deliberately collect the room key and hold it down with a notebook.

There are too many redundant actions that are incomprehensible...

Obviously, this was a scene deliberately arranged by the murderer in order to create a secret room environment.

The key cabinet is very close to the room door, less than one meter, so it is likely to be used for something.

Qin Zhibo looked up along the door frame, and finally his eyes stopped at the open ventilation window above the door.

Chapter 1164 Psychic VS Reasoning

Qin Zhibo's eyes fell on the ventilation window on the door, and he immediately thought of a way to create a secret room.

Just use a cylinder of sufficient length to slide the key into the drawer along the middle of the cylinder, and then use it to slide the notebook onto the key and push the drawer back.

As for the specific objects used to achieve this technique, Qin Zhibo looked at the vase placed on the low cabinet.

【Survey√】

[There are fragments of posters on the fake flowers in the vase. They were probably not placed there intentionally]

The vase is located more than one meter above the ground. If the poster was sprinkled directly on the floor at the door, it would not be sprinkled here.

The existence of this investigation point shows that the murderer indeed used the ventilation window to throw the torn posters in from the outside.

Countless poster fragments were thrown from high places, floating in uncertain directions, and one of them happened to fall on the vase on the low table next to it.

The purpose of tearing up the posters, apart from creating mystery, can only be to dispose of the tools.

Posters are one of the tools for committing crimes.

Qin Zhibo stared carefully at the countless poster fragments on the floor, squinting his eyes slightly.

Suddenly, he seemed to see something and turned around to turn off the light in the room.

The room suddenly became dark, only the light source in the corridor could illuminate it.

This step of operation shocked everyone standing at the door, with doubts on their faces.

Although among them, except for the man with glasses, they got a taste of how detectives solve crimes on the spot by inviting the Maori family to do a show last time.

But according to common sense, the detective should want the light to be brighter, so that it is easier to find clues at the murder scene.

But the famous detective in front of him did exactly the opposite...

However, they didn't know that Qin Zhibo had already taken advantage of this low-visibility environment to see new investigation points among the poster fragments.

【Survey√】

[Some poster fragments have damage on their edges. How could this be caused? 】

The description of the investigation is a question, which means that as long as we solve this problem, we will be close to solving the method used by the murderer.

Qin Zhibo followed the position of the light spot, stepped on the edge, and picked up the poster fragments from the chaos.

The fragment of this poster is located at the very edge of the whole poster, and the edges are covered with layers of squeeze marks.

This kind of mark is somewhat similar to the wrinkles on Jiangxiang pancake.

However, the paper used to print posters is relatively hard. If the poster is placed on a flat surface, it will be difficult for humans to make such marks.

unless……

Qin Zhibo used the light from the investigation point to pick out many poster fragments with the same traces among the poster fragments.

These fragments all have one characteristic.

It is located at the edge of the poster, and the edge is completely scratched.

This is obviously a special mark made by the murderer after using these posters.

In an instant, the murderer's method of using these posters became clear to Qin Zhibo.

Next, all that's left is to completely decipher the secret room between the meditations on the first floor.

"Let's go back downstairs."

Qin Zhibo turned around and walked out of the room, locking the door with his backhand to prevent others from entering the scene.

On the way back to the first floor, the short-haired girl finally couldn't help her doubts and asked.

"Um... Detective, where is Kuroba-san who came with you?"

After her reminder, others also remembered that they had not seen Kuroba Kaito for a long time.

Qin Zhibo was stunned for a moment and could only force an explanation, "He's still having diarrhea and can't come out of the room."

The short-haired girl frowned upon hearing this, and she placed her hands on her chest and said worriedly, "But if this continues, it will damage your stomach, right? Should we take you to the hospital..."

"It's okay, it's okay. This kid is in good health."

Qin Zhibo waved his hand and was temporarily fooled.

However, Kuroba Kaito did disappear for a while, and I don’t know where this naughty boy went.

Solve the case quickly and go find him.

Hey~

It really makes me worry about my father~

……

When everyone returned to the meditation room on the first floor, they saw Koizumi Hongzi standing in front of the mirror in the corner.

This mirror was previously used by Koizumi Hongzi to perform psychic skills, but the result was a complete failure.

At this moment, she was standing in front of the mirror, facing the mirror, wearing a red robe, motionless.

Alas~ the little girl started to be narcissistic again...

Qin Zhibo was a little speechless. He brought this pair of boys and girls, one was naughty + rotten, and the other was narcissistic + willful.

Not as obedient as Conan!

Qin Zhibo ignored Koizumi Hongzi and conducted his own investigation.

First of all, the most eye-catching investigation point is the investigation point on the neck of the blonde girl's body.

【Survey√】

[An unusual strangulation mark]

The fewer words, the bigger the matter.

Qin Zhibo leaned his head over and took a quick look and discovered the problem.

This is a trace without the Yoshikawa Line.

The so-called "Yoshikawa Line" means that when the victim is strangled by someone, he or she will subconsciously use both hands to push the rope apart to create space for the throat to breathe.

The traces produced by this struggle are the Yoshikawa Line.

The blonde girl's neck was a complete mark of strangulation, without any trace of struggle, and even her expression was as calm as if she was asleep.

"Um……"

Qin Zhibo groaned, silently writing this down in his mind.

Next are trivial investigation points elsewhere in the room.

Hidden are the motor behind the bookcase, the motor remote control on the low cabinet, and the fallen A-shaped ladder in front of the skylight switch...

These are obviously props used to shape the secret room.

Instead, the murderer used Hirasaka's trick of pretending to be a ghost during the seance to make it reasonable for these props to appear at the murder scene.

This shows that the murderer should have known about the various techniques Hirasaka planned to use at the seance before the seance.

Otherwise, just relying on more than an hour after the seance ended, I would not have been able to come up with such a complicated method.

Coupled with the discovery of the purpose of the poster upstairs, Qin Zhibo already had a rough idea of ​​the method of creating a secret room.

Next comes the identity of the murderer and the evidence.

The murderer was obviously someone who might have known in advance about Hirasaka's techniques at the séance.

Among them, the doctor man is currently the most suspected.

He made it clear that this plan was planned by him and Hirasaka, and the purpose was to find the person who threatened them and killed the editor.

He had every chance to plan the crime in advance.

Secondly, the girl with short hair.

Judging from the information provided by Takagi Wataru, the short-haired girl was also one of the party participants who caused Yahara Huang's death.

Therefore, Hirasaka might have discussed these matters with her.

However, considering the short-haired girl's figure and physical strength, she may not be able to complete this highly difficult criminal method.

Is there anyone else?

Qin Zhibo fell into deep thought again.

After a while, he still felt that the three recent murders should be analyzed together.

The first case was the death of the editor man half a month ago.

In this case, the murderer left the word "kira" in blood next to the body.

So the motive for the murder in this case was to avenge the death of Yahara Huang.

However, in the two cases that happened today, the blonde girl was strangled to death and Hirasaka was poisoned. There were no blood words or any other traces left next to them.

Generally, serial killers will not easily break the killing pattern they established at the beginning.

The blonde girl was killed, indicating that she

Although he was the first person to discover the editor's body, he was definitely not the murderer.

This shows that the bloody writing on Kira at the scene of the first murder was most likely left by the blonde girl.

Because the police did not disclose the clues about the blood letter, the real murderer quickly fled the scene after committing the crime. He did not know the existence of the blood letter before it was announced, so he did not add anything to the subsequent crime process.

And if the murderer’s motive was revenge, why did he kill the blonde girl?

The blonde girl has nothing to do with the party a year ago, so she should be innocent.

unless……

Qin Zhibo thought of something.