Xu Dayuan frowned.
"Yes, this is the key issue. Old Liu, you go and find out. In addition, whether the way Dr. Lu obtained the files was reasonable and whether these files are complete also need to be verified. I will go to interrogate them first. He Chunyang has already investigated the several time periods mentioned in the files."
Liu Yongxin shook his head.
“The time recorded in the file is not the actual time of the crime. It is calculated from the time when the body of the deceased was found. There is still an error in it.
We found that the five victims were mainly from special occupations. They are highly mobile and it is difficult to investigate the time of their disappearance, but the time of the murder of the other six people can be estimated more accurately. I think we should focus on investigating Cui Guanglin’s six time periods. "
Zhou Ning hesitated for a moment, then raised his head and said quickly:
"In the past five years, the crime scenes have spread all over the urban and rural borders around Qindao. In addition to being familiar with the terrain, you also need convenient means of transportation. I remember Cui's mother said at the banquet that Cui Guanglin had just changed his car a month ago. Can we check the car that Cui Guanglin changed?"
"Changed the car a month ago?"
Zhou Ning nodded.
"They said they changed their car a month ago to a grey Teana. I don't know if they've picked it up yet."
Xu Dayuan quickly made a phone call, and Liu Changhai rushed in a moment.
"What's wrong, leader?"
"Hurry up, go to No. 1 Middle School and tow Cui Guanglin's car back. It's a silver-gray Teana. I think it should be easy to find. Also, when you checked him, did you find any car keys?"
“No car keys.”
Zhou Ning thought about it and looked towards Da Zhao.
"Da Zhao, you can go with him. The car keys are not on him, so they are in the school. Besides, I always feel that he must have hidden something. The school may seem like a public place, but it is not impossible for him to hide something."
"Okay, I understand what you mean. Let's take a locksmith with us. If we can't find the key, we'll unlock the car and get it back. I'll bring someone else to search it carefully. Let's apply for a police dog to help, Xu Da. It's better than finding things by people."
"Okay, go ahead. Chang Hai knows where to get the police dogs. Bring more people."
Liu Yongxin raised his hand and said quickly:
"I'll go find Dr. Lu. One reason is to see if the chemical composition has been researched. The other is to check what car Cui Guanglin sold before and where he sold it. I hope I can find a better one."
Liu Changhai took Da Zhao away, and Liu Yongxin went next door.
Zhou Ning followed Xu Dayuan to the interrogation room downstairs. Before entering, Xu Dayuan reminded him:
"Can you control your emotions?"
"Don't worry, Mr. Xu. I can control my emotions. Also, I'll tell you that I've asked Xiaoyu to go to work as usual today."
Xu Dayuan was a little surprised, but after a little hesitation, he figured out what the intention was.
"That's great. I'm really worried that Zhou Xiaoyu is getting too deeply involved. It would be best if she could come out of this quickly. I'll tell Principal Bai about this to avoid rumors in the school."
"That's what I mean. Sorry for bothering you, boss."
Xu Dayuan waved his hand, and the two of them went into the interrogation room together.
Zhou Ning watched last night's interrogation. Cui Guanglin didn't move at all, but as the video fast-forwarded, Zhou Ning frowned. How should I put it? This man didn't seem to move, but his expression was very different. Did he see it wrong?
When I asked about the progress, the people inside kept shaking their heads.
"Captain He has been in there for an hour and a half, explaining the policies, but these are meaningless to Cui Guanglin. He doesn't even raise his head and just keeps looking straight ahead.
His behavior was similar to yesterday. Apart from eating and drinking, he didn't respond. He just listened to you interrogating him, as if these things had nothing to do with him."
Xu Dayuan nodded, not surprised at the result at all.
"Got it, call He Chunyang out."
The two men went out, and He Chunyang was called over after a while. He Chunyang grabbed the mineral water on the table, raised his head and drank half of the bottle. After drinking, he spat and stared at the one-way glass mirror with anger in his eyes.
"This guy is so difficult to deal with. He didn't respond at all. I was so thirsty from talking, but he didn't even lift his eyelids."
"Stop complaining and take a rest. Zhou Xiaozhou and the others have received the inspection report. I'll go meet him!"
He Chunyang immediately perked up, quickly moved to Xu Dayuan's side, read the report first, and was so excited that he couldn't express it in words.
"It's a big fish indeed. This guy's psychological quality is definitely not ordinary. It seems that we need to think about his weaknesses and then interrogate him based on his weaknesses. Even if we throw evidence in his face now, he won't blink an eye. After all, he may have killed eleven people before."
Xu Dayuan smiled.
"Just as I thought, the fatigue tactic is useless, so let's change it. But there is no need to rush to show the test report. Without a one-shot method, the blow to him will not be too great, and other things will not be explained."
Zhou Ning thought about the meeting between the two families that day. Cui's father and mother said that after they gave birth to Cui Guanglin, they no longer lived in Qidong and went to support the border areas. They returned to their hometown after retirement and reunited with Cui Guanglin.
Cui Guanglin had always lived with his grandparents in Qidong. After his grandparents passed away when he was seventeen, he lived alone for many years. His parents lived with their youngest son, which means that his parents did not know much about Cui Guanglin, and they probably knew everything about him only after he was seventeen.
As for his physical development, especially the huge difference with other children of the same age, it made him feel inferior and he even began to hide some evil thoughts in his heart, but he couldn't ask his grandparents about this.
"What is Zhou Xiaozhou thinking about?"
Zhou Ning looked up. Xu Dayuan and He Chunyang were both staring at him. There was nothing to hide, so he spoke directly.
"I just thought that Cui Guanglin's parents went to support the border areas after he was born, and he grew up with his grandparents. Perhaps the absence of his parents and his physical difference made his psychological development unhealthy. After the examination in the provincial capital, he could not find a way to vent, so he started to plan all this.
If our analysis is reliable, then Cui Guanglin’s weaknesses are easy to find. There are two of them. One is his parents. They have been separated for many years, so he longs for love. The other is his physical disability . I looked at his medical records in the provincial capital. He has both male and female organs, although the female set is incomplete..."
Xu Dayuan was stunned. Seeing that He Chunyang was about to speak, he pushed him away and stared into Zhou Ning's eyes with an expression of disbelief.
"You mean, talk to his parents, then let them meet, attack his psychological defenses, and then find someone to give him a physical examination. No, this is not called a physical examination, it should be a physical examination. The first part is easy to say, but where can I find a doctor for you? And should I find a male or female doctor?"
"this……"
He Chunyang also laughed and pulled Xu Dayuan's arm.
"The doctor will take his time to find one, but you can talk to Cui's parents first. Their child has done something like this, so it's not impossible to do some work and let them comfort him."
"Then get in touch!"
He Chunyang was stunned.
"I don't have the contact information of Cui's parents."
Zhou Ning took out his phone. He remembered that when they just sat down that night, his second uncle exchanged contact information with them. He called and asked for his second uncle's number. He didn't even have to use the prepared excuses. He was surprised by how smoothly it went.
"Your second uncle doesn't know about Zhou Xiaoyu, right?"
Zhou Ning shook his head.
"I haven't told my family. There's no way to talk about this. When the case is announced, there's no need to talk about it."
Xu Dayuan patted Zhou Ning on the shoulder and didn't say any words of comfort. We all do this, so there is no need to say such things.
At this time, He Chunyang had already dialed Cui's father's cell phone, and the call was connected after one ring.
"Hello!"
"Hello, are you Cui Guanglin's father?"
"I am."
"This is the Criminal Police Brigade of Qidong Branch. You and your wife, come over here now. We will learn about Cui Guanglin's situation. Of course, if it is inconvenient for you, I will send someone to pick you up."
The person on the other end of the line was obviously shocked by the words, but there was a conversation between a man and a woman.
"Who called? It's from the criminal police team. They want us to go to the criminal police team to discuss Guanglin's case. They're not scammers, are they? Scammers can't ask us to go to the public security bureau! That's right."
He Chunyang heard the conversation between the two people carefully, which saved him a lot of trouble.
"Are you sure you don't need us to pick you up?"
"No, no, we'll be there in five minutes!"
After hanging up the phone, Zhou Ning looked at Xu Dayuan.
"I think we can ask Director He from the emergency department to check on Cui Guanglin. We can't take him away right now anyway. It's just an external examination. Our goal is not to check him, but to break his composure.
A person who has been disguising himself as an ordinary teacher for years, is being interrogated at this moment and still cannot get rid of this identity. Only when he is excited or unable to control his emotions can he talk about his previous crimes. Of course, I suspect that he has multiple personalities. "
The young policeman next to him exclaimed.
"Multiple personalities?"
Xu Dayuan slapped the man and waved at Zhou Ning.
"Whatever you say, we'll do it. I don't care if he has multiple personalities or not, as long as he can explain it seriously. But if He Shancun knew that it was you who suggested that he come here, he would probably chase you and beat you up. You really made the wrong friends!"
Zhou Ning paused, this was not the only insult he would receive.