This can't help but make him a little desperate, this feeling of looking for someone in a desperate situation makes him a little angry, and he can't help but start to make him dizzy.

But he knew that this should not be the case at this time, and he had to save more people and not let the tragedy happen again.

At this moment, he suddenly heard some sound in the bathroom from before, and he hurriedly rushed over and pushed open the door there.

"Lao Chen!"

Lao Chen was lying on the floor of the men's bathroom, and there were also those students who came with him, without exception, all of them suffered serious head injuries, but fortunately there was no heavy bleeding, and it seemed that they had just fainted.

"Lao Chen! Wake up! Liu Wu hurried over to help him up, and gently shook his head to see if he could wake him up, and asked what was going on?

"Zhichao Zhichao ran out"

Lao Chen finally woke up under a shaking, but he only said this sentence and fainted again.

Liu Wu knew what he meant, and hurriedly handed over the fainted few people to the accompanying students, and then rushed out alone.

"Where would he go if the library was so big?" Liu Wu quickly looked around, but found no trace of any suspicious person. "What's more, there are so many people here, it's impossible for him to hide his body completely, right?"

Liu Wu walked slowly in the hall, and he realized at this time that the sound insulation effect of this library was still very good, and the footsteps on the second floor could not be heard on the first floor, but this situation was also a disadvantage, because the location of the person could not be identified according to the sound.

At that moment, he suddenly saw a figure passing through a bookshelf not far away, but he caught it for a moment.

"Stop!"

Liu Wu hurriedly chased after him, he could feel that the person was hiding in the corner not far in front of him, and when he saw him getting closer and closer, he decided to take the opportunity to escape.

Liu Wu hurriedly quickened his pace, and he had already heard the footsteps of the person in front of him.

After chasing for a while, he finally saw the back of the man.

It was a thin man, and if it weren't for the fact that a dark shadow had appeared just now, he wouldn't have been able to spot this man at all with his height.

The man was wearing a shabby school uniform, and he had a hunch that he was the Zhichao that the other students said he was.

But what puzzled him was that the man did not choose to run upstairs, but ran to the corner, which felt not like he was running away from him, but more like he was running away because he was afraid of something.

Seeing him squatting in the corner, Liu Wu didn't hurry anymore, and slowly came behind the man after slowing down.

"Don't Don't Kill Me Don't Kill Me"

The man kept muttering something to himself

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words, as if frightened, even Liu Wu walked behind him, but he didn't notice it.

"Turn your head!" Liu Wu shouted, and then tried to forcibly drag him over.

But as soon as his hand touched the man's shoulder, the man's body shook violently, and he fell backwards, while his mouth was foaming blood, and he struggled for a while before he stopped moving.

"It's dead" Liu Wu sniffed for a moment, then checked his mouth. "Biting his tongue and killing himself, what makes him so scared?"

Liu Wu began rummaging through his body and eventually found a student ID card in the pocket of his pants.

"Zhichao is really him! But why did he kill himself? ”

Looking at Zhichao, who was no longer breathless in front of him, Liu Wu's mind was very confused, it was less than half an hour, and four people had already died, and one of them was the one he thought was the murderer.

In the years he has been a police officer, this is the first case that has made him a little difficult, the number of deaths, as well as the modus operandi, and the murderer's super anti-investigation ability, have made him a little dizzy.

Moreover, because the most suspected murderer died, this also made Liu Wu start to think about whether there was something wrong with his thinking.

Except for the fact that the murderer can't stand the stimulus of killing, if he is not the murderer, then there must be other murderers.

But the first three people who died were all top students, isn't that the reason for their deaths?

Liu Wu shook his head, there must be commonality in the crime, even if it is an impulse crime, the dead people must have the same characteristics, otherwise, this crime will be meaningless.

This is the experience he has summed up from so many years of solving crimes, each case has its own unique reasons, and it is impossible to be completely irregular, and this time is the same.

"I don't believe it with static braking, there will be dead people here!"

Liu Wu slowly moved Zhichao's body to the corner of the wall and put it in a place that would not be too obstructive, then got up and walked towards the bathroom.

Lao Chen and the others had already woken up, and they were sitting at the desk not far from the bathroom with the other people who had woken up.

"Officer, you're back!" Seeing Liu Wu coming over, Lao Chen hurriedly waved his hand. "Did you catch that student?"

"Caught, but he killed himself"

"What?! How is this possible? ”

Lao Chen's face was incredulous, the murderer committed suicide? How is this possible?

But after he was surprised for a moment, he regained his composure, turned his head to look around, and then took out the phone in his arms.

"But there's still no signal on my phone, we should find a way to get out of here now!"

"Indeed" Liu Wu turned his head to look at the door, he really didn't pay much attention to the quilt at first

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Lock the door.

The door was locked from the outside, and several chains could be seen locking the two doors together.

Moreover, the door of this library is made of high-density glass, and it is impossible to smash it open with tables and stools, let alone go out.

"Is there only one exit from this library?" Liu Wu asked softly.

"If you want to get out, there is only this way," Lao Chen thought for a while. "There's another way up to the roof, but no one has been up for a long time, so I don't know if the door will be opened."

"You should have the key to open the rooftop door, right?"

"Yes!" Lao Chen hurriedly ran to his workbench, and after a while, he took a bunch of keys. "This is the key to the rooftop, as well as the key to the gate and the warehouse!"

"And there's a warehouse here?"

"Of course! There are still a lot of books here, and those books can't all be placed on the shelves here, they must be placed in the warehouse! ”

"Lao Chen, you go and gather everyone first, and there will be no more casualties!" Liu Wu said quickly. "I'll go to the rooftop to have a look, and if I find anything, I'll come down and look for you!"

Lao Chen nodded, waved his hand and led the people next to him upstairs, while Liu Wu walked upstairs after them.

There was a simple map of the library next to the stairs on the second floor, and at first he didn't notice that in the upper left corner of the second floor, there was a small staircase that could go up to the rooftop.

The door to the rooftop was locked without incident, and most importantly, there was a lot of dust on the doorknob, and no one had been here for a long time.

"I don't know if this key will still work"

Liu Wu gently inserted the key into the lock, twisted it violently, and pushed it hard, and actually opened the door.

But the strong impact still caused the door to be hit hard, and the whole door was directly knocked out and fell to the side, but it didn't matter to him, the important thing was that he was now on the rooftop.

"What is this place?"

He was indeed on top of a building now, but it was surrounded by high mountains, and there was no way to see it, and this two-story building was built on the mountainside, and it was a very steep place, and it was impossible to force his way from it by his own ability.

Liu Wu slowly came to the rooftop and looked down, although this library is only on the second floor, but looking at this height, he doesn't want to be the height of the second floor, and there is nothing around to borrow strength, forcing it from here will definitely hurt himself.

After confirming that there was no hope of escape, Liu Wu prepared to go back, but when he walked to the door, he found that the broken door had been set back at some point, and it was firmly locked with iron chains.

"What's the situation?" Liu Wu hurriedly ran over and pulled the iron chain hard, but the iron chain was very strong and could not be pulled open in a short period of time.

(End of chapter)

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