"Bang bang." The door creaked open, looking at me and Xiao Zhang outside the door, He Yingying didn't feel surprised, still expressionless, we walked into the hall, at this time the scene has been cleaned up, as if nothing has ever happened here.

He Yingying made two glasses of boiling water for us, and then sat down on the sofa.

We sat down, and I shook my hand and looked up at her, "Sorry, I'm bothering again, because there are some issues that we have to figure out so that the case can move forward." ”

He Yingying lowered her head and never spoke.

"May I ask if you really stayed in the study on the second floor all the time on the night of the crime?"

He Yingying paused, slowly raised her head, under the thick hair, her eyes like a deep pool were terrifying, "Hmm." ”

"Don't you really hear anything? According to our investigation, the sound from the first floor can be clearly heard on the second floor. I stared firmly into her eyes, hoping to see something out of the pool.

"I was wearing headphones."

Xiao Zhang glanced at me, and also frowned, if you wear headphones, you can really explain it, but if you read a book, shouldn't you keep a quiet environment?

"So how is your relationship with your parents? Is there a generation gap. "I'll try to be as tactful as possible.

"Do you suspect that I killed someone?" She looked at me, and to my surprise, there was still no change in her eyes.

"No, no, no, what we police have to do is to eliminate all possibilities, and this is just a procedure." I say.

She blinked and brushed her hair slightly, and I could see the bruises on her cheeks, which were definitely not left on the night of the crime.

"You suspect that my father did it because you saw my wounds, right?"

I hesitated for a moment, so I nodded, since it had been broken, then I didn't need to hide it anymore.

A smile appeared on her face, and I couldn't tell if it was a wry smile or a mockery, "It's not just you who have thought about it, people have found out that I have often been injured in the early days, and they suspect that my father did it, and soon the news was reported to the media, and many people denounced my father with great fanfare, which caused an uproar at the time, and my father denied it in every possible way, and finally even had to use a polygraph, and the witnesses asked my father if he had ever violated his daughter, and my father replied no, never." ”

"What are the results of the test?"

"Truth be told, my father didn't lie." She raised her eyes and said calmly.

"And you—" I looked at her puzzled.

"You must be wondering how my injuries came about, I did it myself."

"What?" Xiao Zhang and I both looked at her in surprise.

"I don't think I need to explain anymore, everything I can say has already been said." He Yingying has clearly expressed the meaning of sending off guests, and we will no longer stay, get up and leave.

On the way, Xiao Zhang searched Baidu, and sure enough, he found the news of He Zhiyuan's lie detector, it can be seen that He Yingying is not lying, I frowned suspiciously, and felt that the fog in my mind gradually increased.

"I don't think He Yingying should be a murderer." Xiao Zhang said, "Just from the fact that his father has not done anything to hurt her, and there are no obvious traces of a fight at the scene, how can she kill two adults quickly just because she is a girl?" ”

My brow furrowed even more, and although Zhang's judgment was mostly preconceived, I had to admit that his analysis was not justified.

There was too much traffic in front of me and it started to jam, I stopped the car and started to think again, I believe that my thinking was not wrong, but there must be something wrong with some link, but where is it?

Indeed, it is impossible for a girl to kill two adults at the same time, this is absolutely impossible, and the injuries on her body are not done by He Zhiyuan, so .....

Suddenly there was a sharp light in my eyes, and suddenly I was connected.

"What's wrong, Captain?" Xiao Zhang looked at me suspiciously.

"There is another possibility, the injuries on He Yingying's body were done by her mother Zhang Chuyue, so she stabbed Zhang Chuyue to death that night, and then her father didn't realize that He Yingying would also kill her, so she was defenseless, and was killed by He Yingying."

"That makes sense, but why do I always feel wrong?"

"You're just blinded by subjective thoughts." I gave him a slap.

However, when I returned to the police station, the results of the autopsy gave me a blow to the head, because the suspect's blood type was detected, which was type O, which means that my previous inferences were all wrong, all wrong, and there was indeed the murderer who invaded.

Now the direction has completely changed, everyone is engaged in the investigation of the first two possibilities, and all the possible perpetrators around me have begun, I am spread on the table, unwilling to accept my failure, but the reality I can't escape, as the captain I must admit my failure and quickly plunge into a new investigation.

We investigated the surrounding floating population, especially some private business vendors, who may have committed a very large crime, but this kind of investigation is very difficult, so there has been no progress for several days.

On the other hand, we also investigated several enemies who had conflicts with He Zhiyuan, but there was still no progress after a long time of investigation, and those families all had alibis, and they could not find any traces of hired murderers.

We have also investigated all the surveillance footage in the vicinity and are checking it overnight in the hope of finding a shadow of the killer.

In short, the case was at an impasse for a while, I returned to my seat tiredly, the deadline for solving the case was very close, there had not been a case so difficult for a long time, I recalled the case before and after, but the calm face of my daughter He Yingying always lingered in my mind.

Although her suspicion has now been ruled out, I have never been able to let go, and my intuition from the police for many years tells me that this case must be inseparable from her.

I remembered her words again in my mind, she didn't hear what was happening downstairs that night because she was wearing headphones, and the murderer had searched the villa after the murder, didn't he find his daughter in the study on the second floor?

These doubts are really strange, but I can't find the problem, but the lack of problems doesn't mean that there is a problem? That's why I haven't been able to let go, all of this seems reasonable, but if you think about it, you will find that it is really a bit reluctant? It's as if both the murderer and she deliberately didn't notice each other.

If she actually knows what happened downstairs, and the murderer only wants her existence, then the only thing that can explain it is that she and the murderer are likely to know each other! and it is an unusual relationship, so the murderer did not harm He Yingying, and He Yingying also chose to shield the murderer.

He Yingying is studying now and has a small network, so the murderer is most likely her male classmate at school!

I slammed the table and stood up, and Xiao Zhang, who was sleeping soundly on the side, raised his head instantly, he looked at me ignorantly, and blinked his hazy sleepy eyes in confusion.

"Quick, immediately follow me to investigate He Yingying's interpersonal relationships at school." I picked him up and hurried out the door.

He Yingying is studying in the city's No. 1 Middle School, because of what happened at home, He Yingying has asked the school for a long vacation, we found He Yingying's homeroom teacher, but the head teacher said that he did not find that He Yingying had a boy who was very close, I did not give up, and found several girls in the class one after another, because men and women are going to be this kind of thing, or the students themselves know better.

Sure enough, I got a name from the girls, Liu Younan, this is the boy with the most ambiguous relationship with He Yingying, He Yingying told them more than once that the person she likes is Liu Younan, but because the school is very strict with men and women, the two of them did not get too close.

But when we wanted to find Liu Younan, we got the news that he was indeed absent from class, and the head teacher said that Liu Younan was in debt at home due to his father's gambling, and often used his study time to work outside to pay off his debts, so the head teacher didn't care too much.

But I couldn't ignore it, so his absenteeism happened at the time of the murder, as if he was deliberately avoiding our police, and when we investigated Liu Younan, we found that his blood type happened to be type O! His suspicion instantly increased, and our eyes were quickly focused on him.

Soon the investigation and monitoring team also soon came with the news, and they found out that on the night of the crime, Liu Younan had been haunting the villa area, but he didn't stay on him too much because he was a student.

However, we could not find Liu Younan, and Liu Younan's family did not know where he was at the moment.

However, there has been a major breakthrough in the case at present, a major suspect has surfaced, and the case also has a basic framework, the suspect Liu Younan because his family owes a huge amount of money and needs money urgently, so he sneaked into the deceased's house and committed a murder, and because of the relationship between Liu Younan and He Yingying, Liu Younan did not hurt He Yingying, and He Yingying did not betray Liu Younan.

"But captain, do you think that even if a person needs money again, he will not choose to go to his girlfriend's house to rob and kill people, and even if his daughter likes each other again, he will not sit back and watch his parents be killed, and his mother is angry and suffered such a thing." Xiao Zhang said puzzled, it can be seen that he can't accept such a truth.

His doubts are indeed correct, but the evidence shows that the biggest suspect in this murder is Liu Younan, but we have no reasonable explanation for his motives.

"Let's go to He Yingying's house again." I said, Xiao Zhang looked out the dark window and nodded.

"Boom!" Outside the house, I don't know when it rained heavily, the intertwined thunder and lightning reflected the curtains even whiter, He Yingying poured coffee for us, and then sat quietly on the sofa, she did not ask questions about our arrival, just quietly waited for our inquiry, which was in stark contrast to the thunderstorm churning outside the window.