At noon, Liu Qingshan's investigation also had results.

conference room.

"We checked all the surveillance videos in the community, but found no abnormalities."

"Have you also checked the video from the day before the crime?"

Liu Qingshan nodded, "We started all the surveillance videos after Wang Luyao left home the night before the incident."

"The house where Wang Luyao lives is close to the gate of the community, and the surveillance video inside the community can only capture the unit exit of Wang Luyao's building."

“But I couldn’t photograph the sunny side of Wang Luyao’s house.”

Can’t photograph the sunny side?

"That means that if the murderer really escaped from the window along the rope after killing Wang Luyao, no surveillance would be able to record it?"

Liu Qingshan nodded: "Yes, the building where Wang Luyao lives faces the street. Opposite is a small park. There are only two surveillance cameras in it, but there are no

Heading towards Wang Luyao’s house.”

"And there are no shops downstairs in this building. They are all residential buildings, and no one has installed cameras."

"Are there any signs of climbing on the windows?"

This time Liu Qingshan nodded: "We found no signs of climbing between the windows of Wang Luyao's house and the three-story windows downstairs of her house.

But we found a suspected foot mark on the wall of the resident on the third floor."

Liu Qingshan operates the projection, and there is a half-footprint on it.

"The third floor below Wang Luyao's house is being renovated. It was just replaced two days before the incident. On the wall outside the plastic steel window wall, the fixed window cement has not yet dried."

"We found half a footprint on this!"

The half-footprint on the projection is not particularly clear, but whose building has footprints on its exterior wall?

"This must be left by the murderer!"

Zhang Yaoming looked excited.

This is the only clue found so far.

Chen Yan was also a little surprised. He didn't expect Liu Qingshan to really find the clue.

Although this half of a vague footprint does not allow Chen Yan to find out the characteristics of the murderer through footprint analysis, it can prove how the murderer left Wang Luyao's house.

of.

"But if this footprint is really left by the murderer, and he really escaped from the window of Wang Luyao's house, then why is the window of Wang Luyao's house closed?

Where’s the one on it?”

Han Lei expressed his doubts.

An important reason for Wang Luyao's suicide was that the doors and windows of Wang Luyao's home were closed.

There are no traces of outsiders.

Bloodstain analysis also showed no evidence of the presence of anyone else.

The blood stain analysis is easy to explain now. The murderer used ether to make Wang Luyao semi-conscious, and then made her sit on him. The murderer manipulated Wang Luyao

Holding a knife in his right hand, he committed suicide.

In this case, the blood spray will naturally not be blocked by the murderer.

Because the murderer and the victim overlapped at the time, just like the same person.

It's just that the murderer had no idea that the scars on Wang Luyao's body would betray him after his death.

But, apart from these, how are the windows of Wang Luyao's house locked?

"Have you found any clues about the key to the deceased's house?"

Now that the murderer's exit channel has been determined, there are no more than two ways for the murderer to enter Wang Luyao's house.

One is that the murderer climbed through the window to Wang Luyao's house.

Of course, this possibility is very small, because Liu Qingshan has made it clear that he did not find that the windows between Wang Luyao's house and the three neighbors downstairs had been climbed at the scene.

traces of.

The murderer climbing and borrowing ropes to escape from Wang Luyao's house are two different concepts.

Escape from the window using a rope, using very little force, will probably leave no obvious evidence.

But climbing is different. An adult climbs from the first floor to the fourth floor, not to mention that the third floor is still being renovated and the cement fixing the windows has not dried yet. If the murderer

If you really climbed up, it would definitely leave obvious traces.

In addition, the other party must ensure that the windows of Wang Luyao's house are open so that they can avoid damaging the windows.

Go down and enter the room.

The second type is that the murderer took advantage of the five minutes when the system was restarted at noon to openly open the door and come in.

This is the most likely, but there is a prerequisite that the murderer must have the key to Wang Luyao's house.

"I checked the records and found that the door locks of Wang Luyao's house were installed during the renovation of the community. They are standard door locks. I also asked Wang Luyao's husband Zhao Guang to confirm.

The door locks of Wang Luyao’s house have never been changed.”

Has not been replaced.

That rules out the possibility that the locksmith and others hold the key.

Chen Yan once carefully observed the door lock of Wang Luyao's house. It is a willow leaf-shaped door lock. This kind of door lock is not expensive, but it is very safe. If you open the lock

If so, it will definitely cause damage to the lock cylinder.

Or you have to go through the cat's eye and use a specially shaped wire tool to open the door lock from the inside of the door.

There was no sign of damage to the door lock of Wang Luyao's house, nor was there any sign that the cat's eye had been opened.

Judging from these clues, it is only possible to open the door with the original key.

As for the movie showing that the door can be opened by stirring two pieces of wire in the keyhole, that is all pure fiction.

It's all nonsense.

"But we found two repair reports on the property."

"Repair record of the door?"

Liu Qingshan nodded: "Yes, two weeks ago in May last year."

"We have asked the maintenance staff of the property about the specific situation, and they said that her door was creaking a little."

"There are no other circumstances."

The door opened in different directions twice.

Nothing seems unusual.

"Any unusual findings?"

"There is nothing unusual. I just heard from the maintenance worker that when the door was being repaired two weeks ago, Wang Luyao had a few words with a security guard, but there was no conflict.

sudden."

security guard?

"Do you know why we were quarreling?

"At that time, there was only one maintenance worker on duty in the community. During the maintenance, I called a security guard to help."

"It seems that the security guard accidentally broke an ornament at the door of Wang Luyao's house."

"Wang Luyao said a few words to the security guard, but she didn't ask the security guard to pay any money, and the matter passed."

"There was no conflict?"

Liu Qingshan shook his head: "After learning about this situation, I checked the surveillance in the corridor at that time."

"At that time, after the security guard broke the ornaments, Wang Luyao asked him why he was so careless. The security guard did not say anything and continued working. Then Wang Luyao seemed to be angry.

"No wonder that security guard is just a security guard. He doesn't work carefully at all."

"The security guard may have been angry because of this sentence, so he said something back. The maintenance man persuaded him and let it go."

"There was no major conflict between the two."

"I have also seen that security guard. He was off duty on the day of the incident and was not in the community."

Chen Yan nodded, Liu Qingshan's investigation could be said to be quite detailed.

The security guard who only had a few arguments with Wang Luyao investigated the specific situation.

"Did you find anything else?"

"That's all for now."

That's all for now.
To be continued...