Guan Zheng sent Yang Chen away and threw all the documents to Xu Jiuyan, Xu Jiuyan took it and said, "You are really powerful, everyone knows you!" ”

"It's nothing, when I was in college before, I helped him solve an arson case with the History Bureau, and I have only met a few times. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ”

Xu Jiuyan rarely exerted her ingenuity once, and said: "It seems that you are not ordinary acquaintances, and he is a major, with more than ten years of military experience, and you are very different in age but can be friends, which means that you have done something that makes him trust you very much." ”

Guan Zheng stopped and said, "Okay, there is progress, what about the conclusion?" ”

"You are very popular, you work very seriously, and it is easy to win people's hearts."

"Am I easy to win hearts and minds?"

Xu Jiuyan nodded and said, "Yes, you are very good with everyone, even the uncle and aunt in the canteen are very familiar with you." ”

"Do you know why?"

"Because you're very good at handling cases!"

Guan Zheng looked at Xu Jiuyan's sparkling eyes and said, "It's true that I'm easy to win people's hearts because I'm good to everyone, and more importantly, I treat every case as if it happened to me." ”

This time it was Xu Jiuyan's turn to be in a daze: "Here it is again!" ”

"Tease you, hurry up to the scene!"

Guan Zheng pulled Xu Jiuyan to the office, took the equipment or something, and said, "What I said is the truth, you'd better remember every word I say, it's good for you." ”

"You're a chatter, wouldn't you be exhausted if I remembered everything?"

Guan Zheng smiled and said, "So this is a test of your ability to extract information!" ”

Xu Jiuyan flipped through the documents in her hand several times and said, "Let's take a look at the case first, do you want to read the file?" ”

Guan Zheng covered Xu Jiuyan's hand and said, "Don't look at it, it will affect your judgment!" ”

Xu Jiuyan nodded and said, "Okay! ”

Guan Zheng said: "Is the forensic department called? ”

"Called, walking?"

Guan Zheng and Xu Jiuyan went downstairs, and they could see the burned KTV from a distance. Guan Zheng said: "This is the most recent crime scene we have come into contact with so far. ”

"How good is this, it saves time and effort, and it also saves travel expenses."

Guan Zheng got into the cordon, put on shoe covers, put on white gloves, and walked in.

Guan Zheng went around a few times, and the whole house was scorched, the floor slabs were poured everywhere, and black dust kept flying.

Guan Zheng asked: "What about Lao You?" ”

Jia Zhenkai came from behind and said, "Here! ”

"How are you? What about Lao You? ”

Jia Zhenkai said a little embarrassed: "Chief Yu is taking turns off today, it seems that he is going to see his son." I've already called, I haven't left yet, I should be back in a while. ”

Xu Jiuyan hurriedly broke the deadlock and said, "Steamed buns, don't worry about it, Guan Zheng prefers to work with acquaintances." ”

Jia Zhenkai nodded and said, "I know." ”

Guan Zheng didn't like to explain anything to unrelated people, so he said: "Every corner here has to collect evidence." ”

Jia Zhenkai nodded and said, "Okay then." ”

Guan Zheng continued to pull Xu Jiuyan inside, and Xu Jiuyan said a little unhappily: "Are you deliberately making things difficult for steamed buns, all the evidence in such a big place is collected, you should be his god." ”

"Don't think of me as a philistine, the fire scene is the most difficult scene to investigate, all the evidence has been submerged by the fire, so we must do our best to collect evidence."

Xu Jiuyan nodded, and Guan Zheng asked, "Where is the source of the fire?" ”

"How do I know?"

"Here."

"Here? Ｗｈｙ？ ”

Guan Zheng squatted down and said: "There are traces of scorching here, indicating that the liquid caught fire, and the area here is very large, you can know that there was once a glass bottle at the door, containing the flammable products of this fire." ”

Xu Jiuyan looked at Guan Zheng with a suspicious expression, then opened the file in her hand and screamed: "It's exactly the same as what is written here, change your career to become a magician, right?" Learn from others and become an idol in minutes. ”

"Can you make money?"

Xu Jiuyan rolled her eyes, this person really only cares about money.

Guan Zheng stood up and said, "What about the monitoring here?" ”

"I've taken it back, and I haven't had time to see it yet."

"Is this KTV clean?"

Xu Jiuyan tilted her head and said, "Anyway, I don't have a criminal record." ”

"Go back and check all the people present at this KTV, including the staff."

Xu Jiuyan instantly wilted and said, "So many people! What a check! ”

Guan Zheng said: "There are murderers among these people, do you say to investigate?" ”

Xu Jiuyan suddenly came to her senses and said, "How do you know? ”

Guan Zheng said: "Although there is very little evidence in the arson case, it is also very simple to investigate. You know why? ”

Xu Jiuyan thought for a moment and said, "Because the scope of the search is limited, the motive for committing the crime is limited. ”

"The second question, if you were asked to draw a portrait, what kind of person would you think would be more likely to set a fire?"

"The age may not be greater than 25 years old, male, very impulsive, and belongs to the revenge character."

"Why male?"

Xu Jiuyan thought for a while and said: "Because women usually choose the revenge method of unjust debtors, rather than involving most of the innocent people. ”

Guan Zheng nodded and asked, "Then why is your personality so impulsive?" ”

"Because arson usually has a tendency to take revenge on society, and it is often a crime of passion."

Guan Zheng said: "Like you said, arson usually has a tendency to take revenge on society, which does not mean that the character is impulsive. Because they're going to have their tools ready in advance, gasoline or whatever, what do you think about that? ”

Xu Jiuyan was asked again: "Uh......"

"You should say this, be prepared and be sure to use it, many arsonists even if they have prepared the tools to commit the crime, but they give up committing the crime because of a certain experience, which can prove that the arsonist has an impulsive criminal mentality."

Xu Jiuyan nodded, and Guan Zheng asked again: "Arsonism refers to the deliberate and purposeful act of arson committed many times under various circumstances, but why is it a revenge crime?" How could it not be arsonism? ”

"Uh......" Xu Jiuyan couldn't answer again.

Guan Zheng turned around abruptly and said, "Can you answer this question, let me repeat my words, arsonism refers to the repeated intentional and purposeful acts of arson under various circumstances. ”

"Ahh I see, arsonism is a repeat offense, but there is no similar case in this case! ”

Guan Zheng nodded and said, "So, this case is not too difficult. Did the corpse give it to the small circle? ”

"I guess I sent it, I called."

Xu Jiuyan pulled Guan Zheng, and exerted her perseverance again, and asked: "What did arsonism come from?" Tell me more about it. ”

In 1992, Douglas et al. proposed the types of arsonist, which are excited-driven arson, carnival-type arsonists, and intensive arsonists. This type of person is psychopathic, they don't have any needs, they blindly like everything that has to do with fire.

Later, some psychiatrists believed that arson could also be the satisfaction of one's own sexual needs, believing that it was satisfied in the process of arson. Most of them have behavioral problems, are easily impulsive, and hyperactive. ”