On the way back to the police station, I organized my own language, because it was a good opportunity to show my reasoning skills in front of the captain. I'm excited that I've found this clue that if it's correct, it will overturn all of the previous conclusions.

"You mean that Sun Kai's testimony is fake, why did he lie." Cao Yang said indignantly after hearing me refute his testimony from yesterday's investigation.

"Actually, Sun Kai didn't lie, he was just deceived by that recording, because this recording is fake." I'm bold enough to say what I think.

I don't think anyone took me, and I think the reason is that they all think it's incredible. I reasoned with a single glance.

"First of all, if we believe this recording, then our investigation will be a waste of water, because this recording is a trick set up by the murderer. The purpose of his trick was to make everyone think that at 1:35, You Qi was still alive. ”

As I spoke, I saw the captain light a cigarette, and he took a puff, and the smoke gushed out of his mouth and nose.

"Your idea is unique, so do you have proof of it?" The captain said as he flicked the ashes of his cigarette.

"I amplified the WeChat voice You Qi sent to Sun Kai and heard a buzzing sound. For this inexplicable buzz, I looked through the testimonies at the time, and finally let me discover the trick in it. ”

"You mean the buzz, the kind that is muffled and sometimes loud and sometimes small? The captain seemed to know something.

"That's right, that's the kind of voice, I thought about it for a long time, and from the testimony at the time I suspected, no, I'm sure it was ......"

Before I could finish speaking, I heard the captain whisper.

"It's the sound of a vacuum cleaner."

The captain spoke up before me again, and I felt depressed. But I could only reason.

"That's right, it's a vacuum cleaner. According to the testimony of the innkeeper, they will clean around 1:15, and I don't think the length of the second floor is long, and if it is cleaned normally, I think it will take less than 10 minutes. So I assert that Yuki was killed at 1:35, and I think the real death of him should have been after 1:15. ”

Cao Yang's anger at my refutation should be gone. He picked up on what I said.

"If after 1:15 is the time of You Qi's death, then Feng Xu once again has an alibi. However, Sun Kai's testimony and the clues of the vacuum cleaner are both beneficiaries and disadvantages, and only that Luo Ting is left. ”

The captain extinguished a third of the remaining smoke.

"This Luo Ting is very suspicious, we were all deceived by her before, and we have to meet this person now."

After the captain finished speaking, he called me and Cao Yang and immediately rushed to Luo Ting's current residence. Her current address is in a neighborhood called Guangming near the place where Yuki died, which is not a high-end community, and the place where she lives is just a staff dormitory at the cake shop where she works.

Actually, we took some detours at the beginning of the investigation, and if we had known and valued Yuki's current address, we would have wondered why she was staying in that hotel that day. Because in our eyes, the rest of the residents must have a motive to commit the crime.

The place where Luo Ting lives is just a simple tube building, and there are more than a dozen people living in a simple two-story building.

After knocking on them, Luo Ting opened the door after a while, she was very enthusiastic and did not have the same resistance as Sun Kai before.

"Officers, do you have anything to do here, I told you everything I knew yesterday." While talking about Luo Ting, she prepared slippers for us.

I took Luo Ting's words before the captain and Cao Yang.

"I'm sorry to bother you now, are you busy now?"

I thought the captain would snatch my words and ask her herself. He gave me a look, and then took out his tattered notepad from his pocket. Cao Yang next to him also felt that he understood something. I secretly rejoiced in my heart, this is the one who asked me to ask the question.

"I'm not busy, I'm at three o'clock when I go to work, and I still have plenty of time."

"Very well, why did you go to that inn that day?" I asked straight to the point.

"Ah, yes, my colleague was going to use my room for a party that day, because I had used her room before, so I had to lend it to her, and I had to go to the hotel."

I don't think he's going to lie about it, because we'll know if we do a little bit of research.

"So that's the case, so let me ask you, where did you go after you left the hotel at half past one that day?"

"Go to work, I'm going to work at three o'clock in the afternoon."

"Then you're going to work in a minute, as far as I know, the hotel where you worked is close to your dormitory, so why did you leave an hour and a half early?"

"It's very simple, if you don't leave at half past one, you will have to pay for the next day's room, and when I left, I thought of one thing, it happened to be my friend's child's birthday that day, so I also went to a nearby department store to buy a basketball after leaving at that time, if you are interested, you can ask. Hey, Mr. Officer, are you suspicious of me? You Qi felt a little angry in hindsight.

"I beg your pardon, this is our occupational disease, we will investigate all suspicions, even if it is not related to the case, we will ask about it."

"Then what are your boring questions! Just ask. You Qi asked impatiently.

"Do you like Feng Xu? If you don't want to answer, you can keep silent. ”

My question obviously shocked Yuki, her pretty face instantly twisted into a ball and became extremely ugly, she didn't dare to look at me, she just kept silent.

"Very well, your silence says it all, your words help us a lot."

"It's okay, I won't send you."

"What's the name of the store?"

"Ah, it's called Hengli Department Store."

"Where does that friend live?"

"It's in Unit 501 of the Happy Community, and that community is also nearby. Are you investigating me, go ahead. ”

"Okay, thank you, you didn't lie, and I'm grateful for that." After saying that, the three of us left. The moment the door closed, I also saw Luo Ting sitting there, her eyes were blank, as if she was surprised by the question about Feng Xu just now. From that expression, I dared to conclude that this case must have a lot to do with this seemingly weak woman.

We went to the place called Hengli Department Store, and yes, Luo Ting bought a brand new basketball in that place. We went to Luo Ting's place of work again, and her colleague also said that Luo Ting brought a spherical gift to work. Because it was wrapped in a layer of gift paper, I didn't know what was inside, but my colleague asked Luo Ting. She said it was a basketball for her friend's child. After that, I went to Luo Ting's friend's house. She wasn't lying, it was his friend's child's birthday, and it was a basketball. Luo Ting's self-description is flawless, as if it was prepared in advance.

The only direction of investigation also ended in vain...... It's already six o'clock in the evening when we return to the police station, and we plan to sort out the evidence and testimony in this case again.

"I think it's very likely that the murderers are not these five people, and it is very likely that they were killed after the burglary." Cao Yang sat in his seat and said.

"I don't think it's possible, first of all, if it's not a deliberate murder, how can the deceased's head be cut off, such a cruel method can't be done by an outsider, and secondly, the WeChat voice is also very strange, if it's a burglary, how can you use such a complicated trick. None of this worked, but I still think that some of the five of them were murderers, and we may have overlooked some clues. I retorted.

"Could it be that they deliberately murdered together, all five of them are murderers, and this kind of technique often appears in mystery novels."

"Like 'Silent Parade'? I don't think it's possible, they don't have anything to do with each other, and I'm sure this case was committed by one person. ”

The two of us have been bickering over the case, and I admit that while I am firm in my opinion, today's investigation shows that my theory does not seem to be supported by evidence. Cao Yang's reasoning is not out of nowhere, the case has been happening for two days, and we have asked all the people who have anything to do with this case, either there is an alibi or there is no evidence to support it. The investigation is also as if we have reached a dead end, with no way forward.

The captain was there, just looking down at the case report and not speaking. Liu Xiaoyu's most annoying thing is running errands, and he has participated very little in all the investigations, so he can't say anything.

"If the road of the case is blocked, I think the only solution is to go back to the original point and start again, not because of the wrong choice, but because of the omission of key evidence along the way." The captain said as he read the report.

I heard the captain say this, and I had no intention of continuing to quarrel with Cao Yang, he is a deputy and a senior, I shouldn't be so confrontational, and they are all eager to solve the case. I also felt the meaning of the captain's words.

Early the next morning, I applied to the captain for a new investigation, for the simple reason of returning to the original point to find evidence.

"Very well, you let go and investigate, I think you will find the truth."

I felt the captain's expectations of me, so the first thing I investigated was the Hengli department store.

I contacted the salesperson who sold the basketball to Luo Ting in advance, because yesterday's investigation had already had an impact on the salesperson, and the store manager suspected that she had something to do with the case, and she was afraid that she would be implicated, so the two of us agreed to meet at a nearby coffee shop.

"I'm sorry, the police officer just bought a little too much from a customer, so he came late." The salesman said embarrassedly.

"It's okay, I'm new here, so I'll get straight to the point. Luo Ting, is the woman who came to you to buy basketball a few days ago, is there anything abnormal, you can think slowly, don't worry. ”

"In this way, usually the people who come to buy basketballs are boys, but I think it's a woman who buys them, so I'm going to introduce her to the price and quality of each basketball. But this woman seems to be in a hurry, and she has to pay for a random one, and she wants us to play the basketball to the air. The strangest thing was that she seemed to be holding something like a ball in her hand, but because it was wrapped in paper, she couldn't tell what it was. ”

"After that, what else did he behave unusually?"

She took out the same wrapping paper as the ball in his hand and asked me to wrap the basketball as well, and I thought the wrapping paper should be birthday gift paper, so I wrapped it for her. I don't know what happened after she walked out of the store. ”

"Didn't she explain to you what he was holding in his hand?"

"No, he didn't tell me, and I wasn't too embarrassed to ask her."

"Why didn't you tell you this clue yesterday?" I asked, with a hint of accusation.

"After all, it's our client, I didn't expect it to be so big, what crime did she commit." The salesman asked with some curiosity.

"You don't know the best of this, okay, that's all for today, thank you." With that, I paid and left the coffee shop.

My second stop is where Luo Ting works. The place where she works is a cake shop for the general public, and the cakes sold in it are not too expensive. I deliberately avoided Luo Ting's work time and came to the store.

In order to make the process of questioning smoother, I bought a few cakes in the store. I think the clerks in the store should know what I'm here for.

"On January 9, who was in the same class as her when Luo Ting went to work." After buying the cake, I said to the clerk in the house.

After I finished speaking, I saw a middle-aged woman in her forties raise her hand.

"It's me, officer, just ask me any questions."

"Very good, do you remember when Luo Ting went to work and took a few things wrapped in gift paper?"

"Just one, I remember one, and he came into the room and put it on the cashier's table."

"Do you know what's in there, or have you picked it up?"

The middle-aged woman seemed to have some concerns, he seemed to have something to say, but he didn't seem to dare to say anything.

"Don't be afraid, I won't say what you said, even if she knew, we wouldn't let her trouble you."

"Well, I was trying to see what it was, but just as I was about to take it, she stopped me, and she reached out and took my hand away. I was also angry and asked her why she didn't let me see it, and she gave me the reason that it was a very expensive gift, and I guess it was just a ball, but she said so, and I couldn't say anything more. ”

"Did you say you hadn't touched that thing?"

"It's not all, she let go of my hand, my hand accidentally waved that thing to the ground, I was also embarrassed, and quickly apologized, standing in the cash register, Luo Ting picked it up and didn't say anything."

"Where is the thing hit?"

Faced with my strange question, the clerk was stunned for a moment and said.

"Just from the left side of the counter, that's all." He tried to demonstrate with something from the cash register.

"Are you sure he picked it up inside the cash register?"

"I remember yes, I remember he didn't come out."

"Very good, thank you, your answer is very sincere, and the cake in your shop is really delicious." I left the cake shop.

The last place to go is Luo Ting's friend's house.

"I'm sorry, officer, I don't know why you asked about Luo Ting, what I want to say is that she won't do bad things."

"I hope she doesn't do anything bad, but we need to ask everyone, even if your son is involved, I'll keep asking to the end. I beg your pardon for being a bit rude. I don't want to ruin your friendship either, so I'll just ask a question, and I'll leave. ”

"Okay, just ask, I'm not going to lie."

"Is Luo Ting's basketball for your son out of gas."

Hearing this question, Luo Ting's friend laughed and laughed.

"It turns out that this is the problem, basketball is out of gas. Because my child opened the package and started playing, he kept filming in the house, and I also taught him to tap lightly and not disturb the people downstairs. ”

"Okay, just ask this question, thank you."

Because the days are quite short in winter, even though it was almost five o'clock after I finished these things, it was already dark. Even when it gets dark, my heart becomes bright, I already know what the murderer's methods are, and I know how the murderer dressed up as the "Yellow Emperor" and turned You Qi into a "torture day". And all of this is due to my tireless attitude. I don't want to brag, but I'm really proud.