The elevator broke down suddenly and got stuck between the 14th and 13th floors.

There were seven passengers in the elevator, who were killed in the dark:

The first victim was a middle-aged lady, the second was a hotel waiter, the third was a mask man, and the fourth was Xiaolu.

Now there are three living people left in the elevator.

Teacher Ke, the burly security guard, and Tang Xuan.

Who is the real murderer of four people in a row?

The answer is clear at a glance.

In the darkness just now, the security guard's mobile phone was knocked down, and a long cut was made on the chest of the uniform.

Tang Lu has been pressed to the ground by Xiao Lu, and there is no possibility of murder at all. And Tang Lu knew in his heart that he was almost cut by the murderer's throat.

So the answer is pretty obvious.

Tang Xun and the security guards both set their eyes on Teacher Ke.

The murderer can't be the detective himself?

- What kind of stupid rule is this?

Gangsters pretending to be law enforcement agencies to cheat, deceive, kill, and set fires, are there still fewer cases these years?

What's more, it's just a part-time college teacher who writes suspenseful mystery stories.

"What else do you have to say?" the security guard's voice was low, and his eyes were murderous.

Teacher Ke was not stupid, he immediately understood the meaning of the two people.

So he struggled to get up from the ground, exhaled a long breath, and then actually laughed:

"Elevator serial murder? This case has been solved by me!

The murderer who was able to hide in front of my Professor Ke has not yet been born!

So are you going to stand up and admit it yourself, or are you going to let me pull you out with my own hands?"

Mr. Ke is righteous.

"......" security.

"......" Tang Xuan.

Is this middle-aged greasy man crazy?

Just when the two of them were shocked, the lights in the elevator flashed a few times and then turned on again.

illuminated Mr. Ke's body in a suit and covered with fat.

The security guards and Tang Lu were already approaching him step by step.

"What are you doing? What are you doing?"

Faced with the approach of the two, Mr. Ke was obviously a little scared, and then he said loudly:

"Are you stupid? Don't you understand it now? It's a simple trick!

Haven't you read detective novels? Does Edgar Allan Poe know? John Dixon Carr knows?

Why?

No wonder this kind of low-to-explosive trick can hide from you!

Therefore, knowledge is the ladder of human progress!

Forget it, it's up to me to uncover the truth about this elevator murder. The whole thing couldn't be simpler, there were seven of us in the confined space of the malfunctioning elevator, and every time the lights went out, one person died, right?

So who among these seven people is the real murderer?

In fact, all you need to do is answer three questions!"

Mr. Ke's face was full of confidence, and he was not immersed in the death of his "beautiful assistant".

Then he asked his first question:

"Why do the lights in the elevator turn off and then come back on every time?"

"......" security.

"......" Tang Xuan.

Teacher Ke felt that the situation was a little embarrassing, so he could only answer by himself:

"Every time the lights go out, someone in the elevator is killed. This is obviously not a circuit failure, let alone a coincidence, but the murderer deliberately arranged it, and it may even be that the murderer manually controlled the lights to go out and turn on!

And the murderer's purpose, of course, is to use the darkness as a cover to facilitate him to kill people secretly, and at the same time, we can't guess who he really is!"

The security guard and Tang Lu remained silent.

Mr. Ke continued to ask the second question:

"Although there are often poor mobile phone signals in the elevator, there should be no signal at all. Aren't you surprised by that?"

He was very interested, and did not expect the answer of the security guard and Tang Yi anymore, and immediately asked and answered himself:

The answer is very simple, that is, the murderer had planned this elevator murder a long time ago and laid out the situation in advance. This elevator should be equipped with mobile phone signal jammers, so that our mobile phones will completely lose signal and cut off contact with the outside world, thus forming a confined space!"

Speaking of which, Mr. Ke became more and more excited—an excitement that was about to reveal the truth.

"Smack!" he lit a cigarette and continued:

"The third problem, which is more or less similar, is the surveillance and video equipment in the elevators, which is the infrastructure that every elevator must have.

But we've been stuck in the elevator for so long, and four people have died. This is the Nantang Binhu Hotel, a high-end hotel! Why hasn't anyone come to the rescue yet?

The answer is that when the murderer laid out in advance, he had already damaged the surveillance and video equipment in the elevator. Without surveillance, it is impossible to record the entire process of the murderer's killing, and no evidence will be left. And without surveillance, people outside probably don't know what happened in the elevator until now, and they don't even know that the elevator is out of order and stuck between the 14th and 13th floors. ”

Teacher Ke exhaled a puff of cigarette and his face was radiant.

Finally, he raised his voice and concluded:

Therefore, as long as these three questions are answered, the identity of the murderer is already known. It was possible to lay out the elevator in advance, debug the lighting in the elevator of the Nantang Binhu Hotel, install mobile phone signal jammers, and destroy the surveillance and video equipment.

Excuse me, who among the seven people present has this condition?"

Tang Xun didn't answer, but he understood what Teacher Ke meant.

Indeed it is!

The murderer was able to lay out in advance, so as to plan today's elevator murder, which shows that he is absolutely inseparable from this Nantang Binhu Hotel.

It's even possible that it's the staff in this hotel.

Tang Lu involuntarily moved a few steps to the side, wary of the burly security guard beside him.

"......" security.

The anger on his face was heavier, and the murderous aura was even stronger. Then he said in a deep voice:

"It's just nonsense! I've only been working here for a few days, and I haven't even recognized all my colleagues in the hotel, let alone any surveillance video or mobile phone signal jammer. You poured dirty water on me, did you call out that you were a thief, and you were going to bite back?"

"You're wrong!" Mr. Ke smiled and said firmly.

Then he pointed at the security guard with the cigarette in his hand, then at Tang Lu, and finally at himself, and said:

"You, you, me, the three of us, in fact, are not murderers!

The real culprit is someone else.

And this real murderer is still in this elevator!"

"......" security.

"......" Tang Xuan.

Then the two suddenly understood what Teacher Ke meant, and their faces changed at the same time.

"That's right!" Seeing their reactions, Mr. Ke nodded excitedly and continued to say loudly:

"I don't know how many times a little trick like today's has been used in novels and film and television dramas, and there is nothing new at all!

I don't even need reasoning, I don't need to take evidence, I can guess the answer in minutes.

In a confined space, everyone is killed one by one, but the murderer has never been found. Even in the end, everyone died, and no trace of the murderer was found.

So, what method did the murderer use to hide himself?"

Speaking of this, the smile on Mr. Ke's face became even brighter, and he replied:

"Quite simply, the murderer is among those who were killed! He disguised himself as a victim and faked his death from everyone!

Because no one is going to suspect a dead man!"

Then Mr. Ke looked around at the four corpses in the elevator and sneered:

"Have you not noticed that one of the four dead in the elevator was mortally wounded—or rather died in a different way—than the other three?"