"Tsk, this is impossible." Zhou Yan frowned and said, "Did you make a mistake somewhere? Did you really keep staring at the garage door? Or... did the guy named Xiaofu do it?

He would hide outside the garage, and within a few seconds of you going out and running toward the tree, he would swoop into the garage."

"Impossible!" At this time, the little boy in front of me was extremely certain: "I am not a newbie in this game, I am very careful. After I walked out of the garage, I did not run directly to the big tree.

Instead, I turned around, closed the garage door first, and then ran over while paying attention to my surroundings. If someone approached during this period, there was no way I wouldn't be able to detect it."

"Ah? Then it wasn't like this when you demonstrated it just now." Zhou Yan questioned.

"Nonsense! If I close the garage door during the demonstration, how will you get out?!"

"Tsk...Okay." Zhou Yan curled his lips.

In fact, now, the facts of the case are very clear.

Probably... this boy named Xiaofu, under Nobita's constant gaze, escaped his sight and entered a space with only one exit.

"Hiss...it sounds like a different kind of secret room." Zhou Yan muttered.

Lin Xi on the side also nodded: "Yes, it's the secret room!"

"Hey, can a child's game involve a secret room? Are we overthinking it?"

"Don't be so unmotivated. We are detectives. We can't think of things too simply just because the client is a child." Lin Xi said softly: "Actually, if it is a secret room, it doesn't seem to be that difficult to solve.

Because, over the years, countless detectives have summarized all the various techniques of the 'secret room'."

"Ah? Is there any summary?" Zhou Yan was stunned.

"Of course...from ancient times to the present, all secret rooms are actually of the following types.

First: Fake secret room.

Even the crime scene is not a secret room at all, it just looks like a secret room because of some mechanism.

More representative examples are 'lock the door', 'use a mechanism to lower the window', etc.

The solution to this kind of secret room is to just find the mechanism.

The second type: real secret room, remote crime

In this kind of case, the secret room is real, and indeed no one can enter and no one can come out.

But the murderer can be outside the secret room and cause harm to the people inside the secret room.

For example, throwing a throwing knife into a secret room from a window that humans cannot pass through, and then using the thread behind the throwing knife to pull the throwing knife back.

The key to unlocking this kind of secret room is to find the killing method, not the secret room itself.

The third type: temporary secret room

This kind of secret room is not very common. The key point is that this secret room is not actually a secret room at all, but it became a secret room the moment it was discovered.

To give an example, a person comes to the door of a room and keeps banging on the door, making everyone think that the door is locked.

But in fact, the door to this room was not locked at all, he just pretended it temporarily in front of other witnesses.

To unlock this kind of secret room, you only need to crack the murderer's cover-up.

In addition, there are some less representative secret rooms.

For example, the murderer has been hiding in the secret room, regardless of whether others have discovered it.

Or the deceased ran into the secret room, locked the door, and died in the secret room.

Or, the murderer used visual or psychological blind spots.

There are even... some murderers are from the circus, training monkeys to get into the secret room and help retrieve the murder weapon.

In short, don’t get a headache when you see the secret room.”

Zhou Yan nodded. In fact, he was a little surprised now.

Because in his mind, the detective is still like the world before his rebirth. He can only solve the case by relying on his own brain or some sudden inspiration.

Unexpectedly, in this world, detectives already have textbook-like summary documents like "Encyclopedia of Types of Secret Rooms".

Could it be that...will this world still have universities and professional courses specifically for detectives?

Well...when I think about it, it seems pretty similar.

"Okay, it looks pretty impressive, so... which one do you think we are leaning towards in this case?" Zhou Yan asked.

"It's not certain yet, but we can rule out some options." Lin Xi said thoughtfully:

"For example, this is definitely not a fake secret room, because this garage is a real enclosed space. It is impossible for that classmate to start digging a tunnel several months in advance just for this treasure stealing game.

Also, the crime probably wasn't committed remotely, because Nobita saw with his own eyes that Xiaofu walked out of the secret room.

Then, among the remaining possibilities, the one that is more suspicious is...

1. Is there any way for me to sneak into the garage without Nobita's sight?

2. Xiaohu had a way to hide in the garage, but he didn't let Nobita find him.

3. The little husband used some kind of deception to make Nobita think that he was coming out of the garage and was holding a 'treasure' in his hand."

Zhou Yan couldn't help but shrug his shoulders as he listened.

"Yes, these three methods correspond to [Penetrating Through Walls], [Invisibility] and [Illusion] respectively. Otherwise, we will directly show our cards and tell Nobita that your classmate is actually an alien."

He said this, but he didn't think so in his heart, because while Zhou Yan was talking, he took out the detective notes...
Chapter completed!