“…… Are you saying that the human world has been invaded by aliens, and they disguised themselves as human beings and quietly swapped our friends and relatives, so that the relatives and friends around us may not be the people we are familiar with for a long time? Bai Qing's eyes widened, although she said that she was willing to believe what Zhang Heng said, but as an ordinary person with a normal IQ and sanity, and after nine years of compulsory education, it was really a little unbelievable to hear this kind of thing for the first time.

"Yes, I heard you say that your dad has been a little abnormal recently, and it's early to go home after work, and there is a person who flips through photos in the room I thought it was your dad who was replaced," Zhang Heng said, "And your mother's description last night was also very similar to the victim I met before, but because it was too similar, I also had doubts about her, and I knew that those things were trying to find a way to deal with me, so I didn't rush to conclusions, and drove back after going home and getting equipment." ”

"Are you here? Last night. ”

"Yes, I arrived around 12:48 and stopped outside your neighborhood, but I was too sleepy to sleep for a while." Because the relationship with this copy is not clear for the time being, Zhang Heng did not tell Bai Qing about the weird dream he had.

"According to you, the person who was replaced should also be my father, my mother found the anomaly, so my father ...... That thing killed my mother. ”

"No, as far as I know, those things have always been very cautious, except for the previous time when the three children drowned, they didn't seem to kill anyone directly, in fact, they prefer to use the rules of human society to achieve their own goals than this simple and crude way."

Zhang Heng paused, and then said, "Take college students as an example, they create the illusion of mental abnormality through continuous psychological oppression, college students have caused riots in the community with knives before, once the outside world accepts his image of mental disorder, those things can justifiably send him to a mental hospital, and then no one will believe his words anymore, and this time the methods they use have evolved again." ”

"What do you mean?"

"The earlier quarrel between your father and your mother, your mother deliberately quarreled with others and the police, so that other people and the police knew that your father had the intention and behavior of hurting your mother before, laying the groundwork for what happened later, so that when your mother died in the living room covered in blood and your father was found with a fruit knife in his hand, no one would believe what he said, I should have realized earlier, this is actually an upgraded version of the college student's knife incident."

"But the person who behaved abnormally before was indeed my father, and the cameras he secretly installed, how can this be explained?"

"Your father should have discovered your mother's abnormality, after all, no matter how much the two quarrel, they are also a couple who have lived for twenty years, judging from your father's behavior of looking through old photos, he may suspect that your mother is cheating, so he turned out the previous photos to review their past relationship, and the installation of a camera is to catch the adulterer, which is also a normal way of thinking, including when he came home from work early before, he should want to save this relationship, and these can also explain why they broke out in conflict at night, But when the police came, your father kept silent about the reason for the conflict. ”

Bai Qing thought for a while, "It seems that there is indeed such a possibility when you say this, my father is a very face-saving person, if he suspects my mother of cheating, he definitely doesn't want this kind of thing to be known by outsiders." But...... I did see him standing there with a fruit knife in his hand. ”

For example, if your father comes out and sees your mother killing herself, he will definitely rush up and snatch the fruit knife from your mother's hand, but your mother's movements are very fast, or her strength is strong enough, she can complete the self-killing, and finally your father takes the knife, which is the scene you see." Zhang Heng said, "Of course, this is just my speculation, and the specific situation will not be known until after investigation." ”

"So that thing sacrificed itself to send my dad to prison?"

"I don't think they've sacrificed themselves, we don't know much about them now, we don't know what they are, by what means they are replaced, and we don't know what the conditions for their survival are." Zhang Heng analyzed, "Maybe the body is to them what clothes are to us, and throwing away the body is just a change of clothes for them." ”

"Have you been investigating this kind of thing, you always looked like you didn't get enough sleep in class before, is that the reason for this?" Bai Qing asked.

"Yes, I'm tracking the whereabouts of the college students and the drowning of three children by the river." Zhang Heng admitted.

"Why? You said you weren't very familiar with that college student, and those things warned you, why take the risk? ”

"Well...... I'm from the Association for the Prevention and Control of Invasive Alien Species, which deals with anomalies. Zhang Heng lied on this issue and borrowed the name of Shen Xixi's organization.

"Sounds like a mysterious institution that only appears in the movies, is there anyone else in this association besides you?"

"Yes, but none of them are here, and there are other things to deal with, so we have to rely on ourselves." Zhang Hengdao.

"I'm sorry, I'm trying to keep up with you, but ......," Bai Qing hugged his head, "this sounds incredible, alien invasion, my mom isn't actually my mom or something......"

"It's okay, you can take your time, I know you're feeling bad right now, so you can stay here and rest, or go to your grandfather's house, and I'll just take care of the investigation." Zhang Hengdao.

"No, I'm with you." Bai Qing said, "Don't leave me alone. She reached out and grabbed Zhang Heng's hand as she spoke, "The picture in the living room always appears in my mind, over and over again, it's like a nightmare, I, I can't rest, if what you say is true, can we get my mother back?" ”

"It's possible, but I have to say that the odds are slim, but we might have a way to clear your dad's suspicion."

"If I can really prove that my father didn't kill the person, I'm willing to do anything." Bai Qing said without hesitation.

"Okay, then let's start with the corpse and see if we can find anything." Zhang Hengdao.