Rosen didn't expect Lin Qianjun to trust himself so much.

Of course, this may also be another test for Lin Qianjun against Lawson.

And for Rosen, it is definitely a great thing to be able to grasp all the initiative to investigate the murder of Cao Qing.

To tell the truth, how is the relationship between Lawson and Cao Qing?

It's actually pretty average.

Although the two had cooperated in military exercises, and the results were still very successful, Rosen at that time was mainly to get close to Cao Qing under the pretext of finding out about the bandit case a year ago.

But he never thought that before Rosen could start the topic of banditry, Cao Qing would die.

In a way, Rosen lost a lot.

Because his efforts have lost their rewards.

But God gave Rosen a chance to redeem himself.

Lin Qianjun actually handed over the errand of investigating the case to Lawson to do.

This is the dawn of the willows.

Perhaps, in the process of investigating the murder of Cao Qing, we can find some evidence about the bandit case a year ago?

Rosen was already a little eager to give it a try.

But the problem before him now is a bit grim.

He was unable to obtain assistance from the adjudication division in this case.

At least on the bright side.

So for the time being, Lawson is on his own.

The first difficulty he faced was the secret room.

In good conscience, murder in a closed room generally only appears in movies, TV series, and comics, and does not have much realistic reference significance.

Have you ever seen a murder in a locked room on the Internet or in a news report?

Because it's not scientific.

In modern society, the vast majority of homicides are crimes of passion, even if it is a premeditated murder, it will not really be a secret room to show off skills, unless the murderer is sick in the brain.

From the root cause, there are no more than the following reasons for such an exaggerated method as having to build a secret room after killing.

First, it was faked as a suicide or accident.

This is also the most common reason in various comics or film and television dramas.

But in fact, if you think about it, this thing is not reliable at all.

At least with the help of modern technology, forensic doctors can easily determine whether the deceased died by suicide through an autopsy.

Second, blame the murderer on someone else.

For example, a person who has a key to enter and exit a room, or a person who is in the same space as the deceased.

Truth be told, this motivation is not very realistic in itself.

A real murderer, after killing someone, the most normal reaction should be to think about how to cover up his crime, or how to escape the punishment of the law, or how to get rid of the pursuit of the police, without thinking about how to frame others.

After all, the risk of this kind of thing is relatively large.

How do you know that the person you're blaming has a motive to kill, evidence of a crime, and no alibi?

Even if the person is in the same room as the deceased, then this involves a more complex operation.

The simplest question is, how do you control the person you want to blame?

At least you have to make the other person unconscious, right?

Poison or hit with a stick?

These can be found out after the fact.

Unless the means you take are hypnotic......

Third, delay the time for the body to be found.

This is usually done to prevent others from entering the chamber in order to complete other tricks devised by the murderer, and the longer it is delayed, the better it is theoretically for the prisoner.

But this theory only appears in literature.

Because the premise of this is that the murderer needs to complete the impossible crime under the witness of many witnesses.

For example, at the class reunion, one of them claimed that he was not feeling well, and went to the room to sleep first, and then everyone called him and did not respond, confirming that the doors and windows were indeed closed, and he didn't think much about it, and the hotel waiter opened the door the next day to see that the person was dead.

And the murderer is hiding among the rest of his classmates.

This kind of plot mostly appears in various island country mystery works led by "Conan".

But in fact, you can think with your toes that such a thing would never happen in real life.

If you really killed someone, you would have run away a long time ago, and you still have such a strong psychological quality, continue to stay at the scene of the crime, waiting for the body to be found, waiting for the police to interrogate?

......

Fourth, in order to hide the scene of the first crime.

In other words, the body was deliberately transferred to the secret room by the murderer.

Well......

This kind of motivation is really a bit of a middle two.

Theoretically speaking, no matter which dynasty, generation, or country, the most difficult thing for a murderer is never to kill people, but how to dispose of the body of the deceased without being found.

Big brother, you can already move the body of the deceased to the secret room and hide it, why don't you just find a place to bury it......

What's the matter, obsessive-compulsive disorder?

Fifth, it's purely for show-off.

Wow, I came up with a great idea to create a secret room, and I can't help but challenge the police!

If the murderer really happened to be this kind of neurosis, it can only be regarded as the victim's last life......

Sixth, divert the attention of the police.

In other words, the fundamental reason for the prisoner to create the secret room is to hide some other activity he carried out in the process, to divert the attention of the police to the formation of the secret room, so as to ignore more important things.

Let's take an analogy.

For example, the murderer's method of creating a secret room was to hook the door lock with a fishing line, and use the rotation of the electric fan in the house to wrap the fishing line around the fan blades.

The real purpose of the murderer was actually just to wrap the fishing line around the electric fan, but if he only did this, he would definitely attract the attention of the police, so he simply made a secret room and misled the police into thinking that this was just a method of creating a secret room, so as to relax the investigation of the electric fan itself after solving the mystery of the secret room.

But again......

In real life, there are not so many high-IQ crimes, and no one is stupid enough to stay at the scene of the crime and wait for the police to investigate after killing someone.

So when Rosen found out that he had really encountered the legendary murder in the locked room, he was actually a little confused.

So if we compare the six reasons listed earlier, is there a breakthrough in this case?

First of all, the murderer must not be faking Cao Qing's suicide, otherwise he wouldn't even have a stool at Cao Qing's feet.

Secondly, the murderer is not to blame, because Cao Qing is the only one in the house, and the copper lock itself can only be locked from the house, and it is not easy for anyone with the key.

Again, the murderer did not want to delay the discovery of the body, otherwise he should have extinguished the candles in the house, and naturally he would not have been discovered so quickly by the maid or housekeeper.

Then, the so-called hiding of the first crime scene, as well as pure show-off, such reasons are a bit too......

So there is only one last reason left.

Could it be that the murderer wanted to hide some key information to divert the attention of the investigators?

To understand this question, Rosen first needs to figure out how this secret room came to be.

Judging from the scene of the crime, that is, the layout of Cao Qing's bedroom, there is no place to get out except for doors and windows.

If judged by elimination, Rosen really can't explain how the killer latched the copper lock into the jack outside the door and locked it.

Therefore, the most likely key to the realization of this secret room trick should still be in the window.

How did the killer plug the latch outside the window?

Intuitively, Lawson felt that this thing was at least easier than locking a copper lock.

I don't know how the forensic experts in the Earth side working group have cracked it.

At this moment, he heard Pan Shi next to him suddenly speak: "Lord Dutong, in the opinion of the lower officials, even if Cao Qichang takes Hualingsan, it will take time for this medicine to work, with Cao Qichang's cultivation, it is impossible not to notice it at all, in such a situation, it is still difficult for ordinary people to suppress Cao Qichang by force." ”

Lin Qianjun raised his eyebrows lightly, and said in a deep voice: "You want to say that Lu Xuan can't be a murderer?"

Pan Shi nodded.

In this regard, it was difficult for Rosen to make an accurate judgment, and he asked Wu Xiang to go to the hospital to take Lu Xuan away, which was purely a subconscious behavior.

Because the murderer was obviously Cao Qing's acquaintance, otherwise Cao Qing would not have invited the other party into his bedroom to drink tea.

It just so happened that earlier this night, Rosen also saw Lu Xuan on the street, and the latter also had enough motives to kill, if he asked Cao Qing for a while on the grounds of apologizing, it was not impossible.

But here's the problem......

Thinking of this, Rosen suddenly felt a thrill in his heart.

Because he made a big mistake.

Before that, he was thinking as a citizen of the earth's civilization.

But in fact, the girder is not the earth!

It's a world of practice!

Therefore, the so-called method of creating a secret room may not be justified by common sense!

What if someone knows how to escape from the earth, pierce the wall or something like that!

Thinking of this, Luo Sen couldn't help but swallow his spit secretly, turned his head to Lin Qianjun and asked, "Lord Dutong, if he follows Lu Duwei's cultivation, is it possible for him to pass through the wall in this room?" Or use the aura to plug the latch outside the window?"

Hearing this, Lin Qianjun was stunned: "Bolt?"

Rosen nodded, walked to the windowsill, and pointed to the two closed glass windows, as well as the copper lock in his hand.

"Otherwise, the subordinates really can't imagine how the murderer left here. ”

When the words fell, both Lin Qianjun and Pan Shi were stunned.

It seems that before this, these two people had not thought about the problem of the secret room at all.

The next moment, Lin Qianjun didn't answer, but walked straight out of the door, came out of the window, plucked a hair from a maid's head, and stuffed it through the gap between the windows.

Immediately afterward, an apricot-yellow light lit up, and Rosen clearly saw in the room that the strands of hair that had penetrated into the window seemed to have life, and actively wrapped themselves around the wooden handle of the latch, and then gently pulled upward......

The window opened.

At this moment, Rosen's whole person was Spartan.

He could be officially sure that the murderer didn't create this secret room to show off his skills.

Because in the cultivation world, there is no real secret room at all!