Detective Training Manual

Hu Yitong didn't react for the first time, so he spent two or three seconds in his heart before finally nodding.

"Let me give you an example." To confirm, Zhou Yan said again: "That is... if you check in at 6 o'clock in the morning on the first day and check out at 12 noon the next day, then you are enough. Stayed for a full 30 hours. In this way, the system will charge for one day's room.

But if you check in at 12 o’clock at midnight on the first day and check out at 12 noon the next day, you also have to pay for the day’s room rate, but you only stayed for 12 hours.

Between the two, there is a full 18 hours difference, but it is all counted as one day, right? "

Hu Yitong nodded and said, "It's like this. Although it sounds a bit unreasonable, all hotels do so. The system stipulates it!"

Indeed, in the world before Zhou Yan's rebirth, the same charges were applied for staying in hotels.

And that is, this seemingly unreasonable system regulation, if you move your hands and feet, you can add several hours, or even a whole day, out of thin air.

In this way... the key to locking the murderer is not the modus operandi, but the time of the crime!

Zhou Yan looked at Hu Yitong: "Now I want to ask you a very important question. You must answer it carefully."

"Um..." Hu Yitong seemed to become nervous all of a sudden.

"Have you seen Mr. Wang and Mr. Wu this morning?" Zhou Yan asked.

"This... after I got up in the morning, I went to wash the quilt and didn't pay attention, but the two of them drank early in the morning every day. I guess they came back drunk in the morning."

Zhou Yan nodded...without saying much, he walked out of the room.

Xiao Chen outside the door was still confused, but after seeing the relaxed look on Zhou Yan's face, he was even more confused.

"Zhou..... Detective Zhou, what happened?" he asked tentatively.

"Oh, nothing, just found the murderer."

"Oh, I found the murderer, I thought...what?!!!" Xiao Chen was stunned: "I found the murderer?"

"Shhh~" Zhou Yan hurriedly made a gesture: "Don't be so loud, it's just logically clear, I'm not completely sure yet."

"How can you be sure?"

"Um... can we collect blood here?" Zhou Yan asked.

"Yes, but the equipment at the scene is incomplete, so we can only do the simplest test."

Zhou Yan thought for a while: "If a person takes sleeping pills, can it be detected?"

"This should work."

"Then it will be easy..." Zhou Yan rubbed his still dizzy head and asked himself to be as clear as possible: "Then... please call all the suspects together. , If it goes well, we will be able to find the murderer before the police inspection department."

The voice just fell...

"Okay!" Xiao Chen swished, and ran to prepare.

......

After 11 o'clock, the restaurant of the hotel was full of people.

The people sitting in the outer circle were all from the forensics team, as well as the police.

In the inner circle, the suspect in this case sits...

They are Wang Boss, Wu Lao Er, Zhang Jianguo, Zhao Fugui, and Hu Yitong.

As for Zhou Yan, he walked past the tables, chairs and benches of the restaurant, and came to the five suspects...

"Well, it looks like everyone is here..."

"What do you call us over?" Zhang Jianguo was a girl. Seeing so many policemen surrounding him, he was a little scared, clinging to his boyfriend Zhao Fugui's hand tightly.

"Don't be nervous." Zhou Yan comforted: "It's just identifying who the murderer is."

"What?" Zhang Jianguo was startled, and then looked at several people around him: "So..."

"Yes, the murderer is among the five of you!"

Zhang Jianguo seems to be more nervous...

So, before pointing out who the murderer is, please allow me to do an experiment.

"What experiment?" Wu Lao Er asked.

"Blood collection..."

"Whose one is it?" Boss Wang asked.

"your."

"Huh?" Boss Wang was startled: "Mine? Why did you take mine? I didn't kill anyone!"

"Whether to kill or not, we will know by taking blood." Zhou Yan said.

"I, I..." Boss Wang was obviously nervous: "Can I refuse?"

"No." Xiao Chen interrupted.

Before he could say anything, a member of the forensics team came over, took a needle, and motioned to Boss Wang to stretch out his arm obediently.

Boss Wang has no choice but to follow suit.

The needle was inserted into the blood vessel, and the bright red plasma was drawn out...Everyone watched this process nervously. Although I didn’t know what Zhou Yan wanted to check in the blood, the blood was obviously The key to identifying the murderer.

Soon, the blood collection was over, and the five suspects were very worried.

"So, who is the murderer?" Wu Lao Er asked again.

"Don't worry, the reasoning has to be done slowly." Zhou Yan said: "First of all, I would like to ask everyone in the room a question, what is the date today?"

"No. 14." It was Lao Er Wu who answered the question first.

The rest of the people also took out their phones and confirmed the dates.

"Well, it is indeed the 14th." Zhang Jianguo and others also replied.

......

"Yes! Today is indeed the 14th." Zhou Yan said in a general summary.

But... does anyone think that there is a problem with the date?

"Date? What can be wrong with the date?" Boss Wang asked with a cotton swab against the pinhole on his arm.

Zhou Yan turned his head and looked at Boss Wang...

"Other people's dates may be okay, but yours alone is problematic."

"Me?!" Mr. Wang was shocked.

"Yes! There is a problem with your date. Because you said in your testimony that you have lived here for five days, counting today."

Speaking of this, Hu Yitong, a hotel waiter, had to cut in.

"Um...Detective Zhou, you remembered it wrong, we've seen it on the computer before, boss Wang's room was indeed staying for five days, that's right."

Zhou Yan smiled and nodded: "That's right~www.readwn.com~ In the hotel's system, the number of staying days displayed is five days, but it is precisely because of this that there is a problem with the description of Mr. Wang.

Because he said that he came to check in with Lao Er Wu at six or seven o'clock that morning.

And because of the hotel system, its room rate settlement time is noon the next day!

Therefore, the [stay five days] displayed on the hotel system should be six days of stay under the senses of a normal person. "

"Six days?" Boss Wang guessed that it was also because of drinking too frequently in the past few days. He fiddled with his fingers: "Have I lived for six days? No, I clearly remember it was five days."

"Okay, don't forget." Zhou Yan said: "If you count the sunrise and sunset, you have indeed stayed in this hotel for six days."

"But I didn't lie!" Boss Wang exclaimed, "I really feel that I have only lived for five days."

"I didn't say you lied either." Zhou Yan waved his hand and comforted: "It's just that you were stolen one day..."