A room like a secret room. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info a gate. A window.

The door, apparently untouched, was locked inside and out, and the seal was intact.

Only the window seal has been moved. Could it be that after the murderer killed the female college student, he wiped off all traces, climbed out of the window again, and then turned around from the outside, walked through the iron bar, inserted the inner bolt of the window, and then installed a new pre-prepared glass square on the window from the outside, and then smeared putty around the glass, and the new glass was firmly bound to the wooden frame. In this way, it has become a secret room: the outside, you can't get in, and the inside, you can't get out.

A small piece of glass, when entered, was skillfully removed from the outside by the murderer.

As he was leaving, he put the glass on with a small skill.

The kitchen knife must have been brought by the murderer. The murderer had already planned the murder case and prepared all the tools for committing the crime.

Of course, before leaving, the murderer must not forget the footprints, fingerprints and tools of the crime left when he enters, and the kitchen knife must of course be left as a tool for suicide.

Maybe you might bring a piece of whole glass, what if it's broken, glass ballast or putty residue, it's something to look for.

However, there is a slight chance that the murderer has cleaned up the glass ballast and putty mud cleanly, but it may not be seamless.

Ping Fu returned to the scene and walked to the outer glass window to take a look, and sure enough, the putty on the glass window was definitely new and wet, and there was still a little glass fragment mixed with the debris and broken bricks in the dirty narrow passage under the window.

Of course, this may also be some fragments left behind by the criminal police when they installed glass on the window after the first scene, or it may be left by breaking the glass countless times before, and there are few elements that can be accepted as evidence.

But after so much time since the incident, how can the putty still be so wet and fresh? If the landlord confirms that the glass shards have not been broken before, can it be proved that as long as there are at least two textures, it can be proved that the window glass has been broken twice during this time?

It's entirely possible that the glass and putty were only installed last night.

If the doubt is true, it means that the female college student did not commit suicide. When she was dying, there was a second person present!

Yes, this is the person who carried out the murder and faked the scene - reinstalled the glass, smeared putty and made a secret room-style suicide scene.

Ping Yu inquired carefully on the phone, and the technical investigation technician of the sub-bureau scratched his head, saying that he had taken out the broken glass from the window according to the captain's instructions, and reinstalled a new piece of glass, and there might be broken glass left on the ground, and then affixed a seal. As for whether the window pins were plugged in, I really can't remember anymore. But the kitchen knife must have gone with the file, and if you don't believe it, you can check the file. The putty mud didn't seem to be used up, so I just threw it under that window.

However, under the windows, in the narrow passages, there is no putty mud or even empty boxes.

Apparently someone deliberately cleaned it up, right?

This person has done excessive cleaning work, and if he is not a murderer, who will he be? This corner has not been paid attention to and patronized for many years, except for the criminal police, who is the murderer, right?

Ping Xuan suddenly seemed to see a glimmer of light.

Ping asked for another live simulation.

No one was willing to come up to help her, because everyone knew that if they helped her, they would be against the captain Pingwei. One by one, they stood silently beside Pingwei to watch Pingwei's demonstration.

Ping Shu practiced it like this, and he could really get out as he wished. The two black iron bars that had been twisted by Yang Hui with a kitchen knife seemed to like others to drill over, and continued to bend over and breathe.

In other words, there is a single line that may indicate that Yang Hui died of homicide.

Ping Fu demonstrated while reasoning about the secret room, firmly believing that there was a self-defeating doubt.

Suicide is not the only conclusion.

Perhaps, the murderer prepared everything relevant in advance and put it in the place where it should be placed, until he finished killing people, and immediately according to the plan, the murder scene was arranged into a secret room with a suicide effect, so as to prove that the deceased could only have died by suicide.

Ping Yu picked up and extracted some things and put them in two bags, and asked the technical investigators to:

One is to take a sample of the putty and see how long it lasts after it leaves the sealed box to reach the current hardness?

The second is to take samples of broken glass ballast in the small bag from outside the window to see if their texture is completely consistent.

If it is inconsistent, it means that the glass was changed again, just last night.

Of course, you need to ask the landlord first. It's also possible that he moved the glass.

When I asked the landlord, I really didn't have that kind of work.

Then, that is to say, if these two points are confirmed, they can support the conclusion of Ping's homicide.

However, Pingshu was not recognized by everyone.

Most of the criminal police don't believe her suspicions - the same brand of putty mud may also be different due to the climate and different places of use, even if the texture of the glass ballast is different, it does not mean that there is a murderer, maybe the landlord has a wrong memory.

Most importantly, if he kills, who is most likely to be the murderer, the motive for the killing, and what is the conflict of interest?

You must know that the deceased was a female college student, from the mountains, who had never been in love, and the only suspicious person, Hao Hao, was in the detention center and had no personal freedom.

Including Pingwei also felt that Pingwei's doubts were redundant.

There is still support for the original conclusion: a secret room suicide.

Because this is a case of suicide in a closed room, the kitchen knife used in the hands of the suicide can form a fatal wound of that strength.

The medical examiner also said that the deep trauma to the deceased's wrist and foot had forced the blood in the blood vessels not to clot on its own, resulting in excessive bleeding, and the cause of death was obvious.

No suspicious signs were found at the scene to prove the presence of a second person at the scene.

Is it really a case of suicide in a closed room?

When he was a student at the academy, he often read and analyzed all kinds of mystery novels written by foreign writers throughout the ages.

I remember that at that time, she also analyzed and studied the five major types of locked room murders, and there are notes to prove it.

In her memory, she analyzed and recorded it like this:

Read all the secret room murders in the world, there are no other five types:

1. Vexatious: Poe's "Mauger Street Bloodbath" is the representative work. A type that has no technical content at all.

Second, the door and window key type: small tricks include the package adjustment plan, space geometry, house door lock type, secret outdoor return type, and so on. It's nothing more than putting a lot of effort into locking doors and windows.

3. Psychological effect type: make full use of skills such as stealing beams and changing pillars, throwing keys in public, lurking in the house and acting in front of the door to show people's psychology, and then describe the murderer's courage and neatness to create the effect of a secret room.

Fourth, reverse thinking: The most appalling locked room murder case should be the one in "The Reasoning of the Tricolor Cat", which gives full play to its own advantages to achieve an amazing purpose.

5. Stunt type: For example, the door of the merger in "Missile Trap House Murder", that skill, how can people not shoot the case!

However, these are all novels, and they are all works that a group of writers have thought about.

The plain man babbled to the young men of the criminal police, as if he was eager to get the support of others. Perhaps, she just hopes that through examples and lists, her wisdom can sort out her brain, and make herself more and more logical and organized...... Suspenseful reasoning is also the training method of criminal police members when investigating and solving crimes.