Chapter 42 Criminal Psychology

"Nothing? Have the surveillance copies come back?" Han Xu changed the subject.

Chengzi replied, "The hardware facilities of this community are very complete. The surveillance video has been retained for half a year. I have copied all the key points around here."

"Okay, check it out when you get back to see if the murderer has any clues." Han Xu was also a little surprised that the surveillance here has been kept for so long. Maybe he can find some valuable clues.

"There is a computer here, why don't you take a look here first." Xiao Xiao interjected.

Chengzi looked at Han Xu, as if asking for advice.

Han Xu made an OK gesture, seizing any fragment of time to get closer to the murderer.

Upon seeing this, Xiao Xiao took Chengzi to the study.

That was Xiao Ya's office during her lifetime. There were two rows of bookshelves in the small space, with tables, chairs, computers and other supplies all available.

"Your sister likes to read these books?" Han Xu also followed and pulled out a copy of "Criminal Psychology" from the bookshelf.

Xiao Xiao shook his head blankly, "I have never seen these books before, but my sister has a wide range of interests and has read all kinds of books."

Han Xu flipped through a few pages and nodded slightly, not surprised. Today's young people like to pry into other people's psychological world. There are many people who like psychology. However, Xiao Ya has a strong taste. This version of "Criminal Psychology" is so obscure that even Han Xu is too lazy to read it.

Chengzi turned on the computer and asked, "Han Xu, I heard from Li Le that you studied psychology in the police academy?"

"That's right, but at that time I was just having fun and skipped too many classes, so I didn't learn anything." Han Xu said.

"Don't be humble. We have solved three major cases in a row, and they were all murder cases. In our northern suburbs police station, no one will give a thumbs up when mentioning it." Chengzi was speaking from his heart. He was not like Li Le, who was good at Flattery.

"Three murder cases?" Xiao Xiao was surprised when he heard this, "What kind of cases are they?"

The case is closed, but it is still under confidentiality. According to the rules, it should not be told to outsiders. Once it is leaked, it will cause trouble in the whole city, not to mention it will be a kind of harm to the victim's family.

But Xiao Xiao had to report to the police station the next day, and he was considered one of his own.

Chengzi briefly explained the cause and effect, and Xiao Xiao nodded repeatedly. Although these cases are not complicated, they are rare cases. But when it came to Cheng Zi's mouth, he couldn't help but add some jealousy. Each simple story was exaggerated with blockbuster special effects, and even Xiao Xiao was fooled.

"How did you know that the deceased's cell phone was thrown out of the window?" Xiao Xiao asked sharply after hearing about the gas poisoning case.

Chengzi had never thought about this problem. When Xiao Xiao mentioned it, he suddenly realized that this key evidence was the key to unlocking the secret room. He also echoed, "Yeah, how did you know that the mobile phone was thrown in the green belt? "

Han Xu didn't show off and replied: "At first I thought the victim's cell phone might have been lost because he was drunk, but that day I checked the peephole monitor opposite his house and found that the victim had his cell phone inserted in his trouser pocket when he came in, so I'm sure That phone had been at the scene of the crime.

Liu Yun went home the next day. In theory, she didn't have much time to deal with her mobile phone. Firstly, it was not in the room, and secondly, it was not with her, so there was only one possibility. "

"How can you be sure it's not on her? You didn't search her." Xiao Xiao continued to ask.

Han Xu spread his hands and said, "I'm confused. In fact, generally speaking, the murderer is highly nervous when dealing with the scene. Even if he is prepared, he will miss some key points. In terms of Liu Yun's psychological quality, taking such a big risk It was not in line with her psychological behavior to carry the mobile phone with her. What’s more, she simply believed that the disposed mobile phone would not pose much of a threat to her, so she did not remedy it afterwards. "

After listening to Han Xu's explanation, the two of them suddenly realized that although the truth is quite simple, it is quite difficult to grasp these key points in a short period of time.

Xiao Xiao's eyes changed when she looked at Han Xu, full of admiration, "Those who have studied psychology are great and can explain things in a simple way!"

"It's average, good luck! But it's not good to always study other people's psychology. Over time, everyone will look like a psycho." Even though Han Xu was thick-skinned, he could only fight haha.

Chengzi raised his thumb, thinking that no wonder Qin Fen would safely hand over the second group to Han Xu. He was a proficient in analysis, and his head was buzzing.

At this time, the doorbell rang at the right time. It seemed that Song Jiaer had arrived.

Han Xu motioned for them to continue working while he went out to greet them.

"You're here!" Standing pretty outside the door was the number one policewoman in the police station.

Song Jiaer was not wearing a uniform, but was wearing a tight T-shirt and shorts. The white area was so white that Han Xu almost fainted.

After working as a colleague for such a long time, he rarely saw Song Jiaer in plain clothes, and he was stunned for a moment. The beauty in front of him was as beautiful as a fairy falling into the mortal world, without any trace of human smoke.

"What are you doing? Why are you dazed?" Song Jiaer poked Han Xu with a slender finger, smiling broadly.

Han Xu woke up from his dream and hurriedly opened the door, "Come in!"

"What's wrong with you today? It's weird." Song Jiaer tilted her head and glanced sideways at Han Xu.

Han Xu said directly, "You are so good-looking, but you blinded me!"

"Go away, you're not in good shape!" Song Jia'er said, her pretty face was slightly red, and she looked really cute.

Han Xu curled his lips and spoke seriously about his findings, "The murderer may have been here, but I don't know what the purpose was? See if there are any traces left."

Song Jiaer leaned over and used her fingertips to pick up a little dust on the floor. While rubbing, she asked, "How long has no one lived here?"

"Almost half a year. If the murderer has been here, it should be within three months."

"It's been too long. Even if these evidences existed, they have disappeared." Song Jiaer sighed, feeling helpless.

Han Xu also knew this fact. He was just hoping for the best before.

"Let me take a look first. Can you help me?" Song Jiaer didn't want to miss any clues.

The two were about to work when Xiao Xiao came out of the study room.

Song Jiaer frowned slightly when she saw the pretty girl in front of her.

Han Xu introduced them, "Song Jiaer, Xiao Xiao, you two should get to know each other. You will be colleagues in the future."

Song Jiaer looked surprised.

Xiao Xiao stretched out her hand, "I'm Xiao Xiao. I'll report to the office tomorrow as an intern forensic doctor."

"So you are Xiao Xiao? Mr. Hao has been talking about you. You're so pretty." Song Jiaer understood and directly wiped Xiao Xiao's pink face, taking advantage of her.

"She is Xiao Ya's sister." Han Xu added, and explained why Xiao Xiao was here.

"Ah?" Song Jiaer suddenly realized and hugged Xiao Xiao, "I will be your sister in the future. With me here, no one dares to bully you."

Xiao Xiao felt warm in her heart, her nose was slightly sour, and she almost cried again.