Department of Psychology Forensic

Chapter 121 The Dead Is Zhang Xin
For a moment, Zhou Zheng and Cui Jun's eyes were all focused on the report, and the content in it was relatively clear.

GHB components were extracted from the deceased's stomach contents, liver slices, kidney slices, and heart blood.

Such a conclusion made Zhou Zheng and Cui Jun's faces change drastically.

"It's actually GHB?" Cui Jun frowned, and said, "It seems that the murderer really mixed something into the tomato and egg."

"GHB..."

Looking at these familiar letters, Zhou Zheng's brain started to work quickly, recalling the relevant knowledge he had learned in "Forensic Toxicology".

CHB is the abbreviation of Gamma-hybdroxybutyrate, and its scientific name is γ-hydroxybutyl propyl ester. It is a colorless, odorless and odorless central nervous system depressant, and its common form is liquid or powdery solid.

GHB was synthesized in 1960 and was used as a pre-anesthetic drug in European and American countries until 1990 when the US Food and Drug Administration announced that GHB products were unsafe, and then stopped production and sales.

However, the official stop of production does not mean that no one is producing.

Small doses of GHB have a sedative effect, but oral administration of more than 10 mg can cause temporary memory loss, and excessive use can lead to loss of consciousness, slow heart rate, respiratory depression, convulsions, hypothermia, and coma.

"Now we know how the murderer stunned the victim. After the victim was unconscious, the murderer first pulled out all the victim's teeth, and then quickly strangled the victim to death." Zhou Zheng said solemnly, "What is the purpose of doing this?"

"Symbol." Cui Jun said coldly.

"symbol?!"

Zhou Zheng was stunned. This is a standard vocabulary of criminal psychology. He suddenly thought of what Professor Fan said.

I don't know the true face of Lushan, I am only in this mountain.

The reasoning of criminal psychology is the same. When he is in the middle of a case, he will fall into the perspective of the cracker, and he will be blinded, and he will not be able to see many things from a broader perspective.

The solution to this kind of thing is very simple, that is to detach yourself and examine the case as a "consultant".

In this way, there are cold pictures in front of you, and you can calm down and feel the psychological state of the murderer through the pictures.

But if you participate in the case, you will have a lot of preconceptions, which are unavoidable, unless you have the ability to detach yourself at any time.

Symbols, for some serial murderers, are their exclusive habits.

This kind of habit may be various, some are very simple and common, and some may be particularly abnormal, but no matter what kind, such symbols will always appear in the murderer's case.

This is like a picky eater who does not eat vegetables. When he eats out, he will pick out all the vegetables on the plate and leave them behind.

This is a subconscious behavior and an unconscious behavior that runs through every similar scene.

The same goes for the criminal process.

Could it be that……

This criminal likes to pull out the teeth of the dead?

That's why it took a lot of trouble, it could be poisoned to death, but why did it have to be fainted, and then strangled to death after pulling out teeth?

Zhou Zheng has no doubt that a person who can get GHB will not get some conventional medicines. After all, some sleeping medicines will have fatal effects after overdose.

"Master..."

Zhou Zheng subconsciously looked at Cui Jun, but he did not expect that the latter would say such words.

"Surprised?" Cui Jun seemed to have guessed Zhou Zheng's thoughts, he grinned and said, "I have also studied criminal psychology, but I only stayed at relatively superficial theoretical knowledge, and I can't draw portraits as magically as you. "

"I can't draw it now either..." Zhou Zheng smiled wryly and shook his head helplessly. He didn't know if he was tired or out of his mind recently. Looking at such a case, he just felt confused. The mist can't be dialed away.

"Normal, very normal, you have entered a period of confusion." Cui Jun patted Zhou Zheng's shoulder lightly, and said, "This kind of confusion will not only appear in criminal investigators, but also in forensic doctors. When I first joined the job, I felt that I could solve all the cases and had a strong confidence, and then when I encountered some difficult cases, I was suddenly frustrated and caused intermittent low self-confidence.”

Confused period?
Maybe so...

Zhou Zheng stared deeply at the report sheet in front of him, with some thoughts in his mind.

It has to be said that he was still influenced by Professor Fan's suggestion, and he also wanted to know if he could have made a portrait of the case if he hadn't been involved in the case.

"Master, give me a little time."

Zhou Zheng handed the report to Cui Jun, then sat down at his desk, closed his eyes tightly, and put himself in a vacant posture.

Seeing Zhou Zheng's appearance, Cui Jun didn't say much, and returned to his position silently.

At the same time, Jiang Luoluo also left.

It was as if the whole world fell silent.

As time passed by, Zhou Zheng was always in this state of emptiness. He didn't think about anything, allowing his brain to get a full rest.

I don't know how long it took, he slowly opened his eyes, his eyes became much clearer, he took out a piece of chocolate from his pocket, and chewed it in his mouth, the taste of melted caramel made his brain feel bursts of joy.

Zhou Zheng quickly looked at the computer monitor, clicked to enter all the picture information of Zhang Chi's case, his eyes widened, and his brain was thinking quickly.

The crime took place indoors and the poison was in the dish, which is enough to show that the murderer and the victim knew each other.

The murderer pulled out the victim's teeth...

This shows that the murderer has a very special emotion about teeth.

and many more!

teeth?Wisdom teeth!
Su Xi, the deceased in the cross-sea bridge dumping case, died after pulling out the impacted wisdom teeth.

It doesn't matter, does it?

Zhou Zheng's brain quickly analyzed, and then his eyes lit up, and he suddenly discovered the reason why it was difficult for him to make a portrait of the suspect through criminal psychology.

Insufficient information!

That's right, there is not enough information!
The process of homicide investigation is actually a process of discovering clues one after another, making inferences based on these clues, and then finding the murderer.

These cues are crucial.

In the vast majority of murder cases, the murderer can be found through the clues found.

However, after all the clues have been exhausted, there is really no way to find more clues, and after everything is interrupted, it is the space for criminal psychology to play.

According to all the clues found in the early stage of traditional criminal investigation, the criminal's psychology is analyzed, so as to delineate the scope and narrow down the suspects.

Now that he is in the process of criminal investigation, even the most basic clues of the murder case have not been found, similar to a question that has not given all the conditions, so in this case, it is difficult to make a criminal psychological judgment. It is also understandable.

Zhou Zheng thought about it and felt much more comfortable. At least this gave him a psychological comfort. Moreover, he also divided his concentration into an order in his heart. Knowledge found clues and evidence, but when the murder case reached a dead end, he withdrew himself from the murder case and focused all his attention on criminal psychology.

After all, better than Professor Fan, when he intervened in Gao Sheng's case, he didn't solve the case before the third puppet came out. more sophisticated.

"Ring-ring--"

At this moment, Zhou Zheng's cell phone rang, calling him out of his fantasy, and before he answered the phone, he heard Master's cell phone ringing again.

Not good!

An ominous premonition welled up in Zhou Zheng's heart.

If one person's mobile phone rings, it may be something else. If two people's mobile phones ring together, it is basically a murder case.

Zhou Zheng quickly picked up the phone, looked at the caller ID, and found that the caller was Xia Yan, and his heart was even colder.

"Captain Xia, does the Blue Whale Dental Department have any clues?" Zhou Zheng picked up the phone and was the first to ask. He hoped to get an affirmative answer.

"No." Xia Yan said in a deep voice, "When we were investigating in the Blue Whale Dental Department, a murder occurred."

really!

Zhou Zheng's heart beat violently.

Why are they connected in a row!

Again!
"Where is it?" Zhou Zheng asked with his lips pursed. He knew that he was about to appear on the scene. He didn't understand how many people died unnaturally every day until after he did a forensic examination.

"Longwan Hotel." Xia Yan's tone became more serious, and he said, "The deceased is Zhang Xin."

"what?!!"

After Zhou Zheng heard this sentence, the hairs all over his body stood on end, goose bumps covered Da Xia Tian's arms, his eyes widened unconsciously, and he couldn't believe his ears at all.

"Didn't we just meet?"

Zhou Zheng can still clearly recall Zhang Xin's face, and the story told by the latter is still echoing in his ears. It happened in the morning, and now...

He looked at the time in the lower right corner of the computer screen, it was past 14 o'clock, no wonder he felt a little hungry, he was in a daze for a long time!

Even so, that's not a few hours.

Can't you think about it?

Nope!
Zhou Zheng shook his head and got rid of the thought that came up at that moment. In his contact in the morning, although the time was very short, he could tell that Zhang Xin was not the kind of person who would give up his life easily, especially Before he knew who killed his son Zhang Chi.

"Forensic Cui should have been notified as well. Go and have a look. The scene, well, the scene is quite special. However, there are a lot of surveillance videos in the hotel, so there should be some important clues." Xia Yan said in a deep voice.

"Understood." Zhou Zheng nodded, hung up the phone, turned his head to look at Cui Jun, and found that the latter was standing not far away with an exploration box, waiting for him.

"Master, let's go." Zhou Zheng walked over to take the exploration box.

"Do you know the deceased?" Cui Jun asked curiously.

"I just met this morning. He is the family member of the victim whose teeth were pulled out." Zhou Zheng said slowly.

"You met the family members of the deceased!" Cui Jun suddenly realized, and then said meaningfully: "This is not a good habit. It is better to see them less in the future. One thing is worse than one thing. The most important thing is that after you see them, you may would be brought into that emotion."

"Well, I see." Zhou Zheng nodded again. He had already felt that when he learned of a murder case in the past, he was not in a good mood, but this time he was in a bad mood, because it was the time when he woke up in the morning. A living person who has spoken will lie on a cold dissecting table immediately afterward. As long as a person with blood is flowing in such a thing, who can have no psychological fluctuations at all.

"You!" Cui Jun saw Zhou Zheng's complicated mood at a glance, and said lightly: "It's good to experience it a few more times, train yourself slowly, and when you can face the corpse without any fluctuations in the future, you will be a Qualified forensic doctor, remember, in the eyes of forensic doctor, there is only a corpse, no identity."

"Yes, Master." Zhou Zheng nodded continuously.

"You need to speed up your growth, so that if one day I have an accident, I can let you dissect it with confidence!" Cui Jun joked with a smile.

"..." Zhou Zheng was speechless for a moment. He didn't know how to answer such words. He thought to himself, as expected of a forensic doctor, he could say such words.

……

Longwan Hotel is not too far from the City Police Department.

It's just a few minutes drive away.

After all, Zhang Xin is not a local, he is here to deal with the murder of his son Zhang Chi, so the hotel he lives in is not far from the Municipal Bureau.

If Zhang Chi's rented house hadn't been sealed off, Zhang Xin might have lived in his son's house.

When Cui Jun and Zhou Zheng arrived, the entrance of Longwan Hotel had already been cordoned off, and all the residents in it had been checked out, and everyone had been questioned and registered their information.

The vast majority of them were called here temporarily. People who came to Jianghai City at this time were either on business trips or touring while the flow of people was decreasing. Will stay in the hotel.

When the police arrived, there were not many customers in the hotel, most of them were staff.

"Forensic Cui, Brother Zhou."

Zhao Lei ran over, and now at every scene, he has a task, that is to pick up people from the forensic department.

"What happened at the scene?" Cui Jun immediately asked, as a professional forensic doctor, he needs to know the relevant information of the murder case as soon as possible.

"The victim's name was Zhang Xin. When cleaning half an hour ago, he found the door was ajar. When he entered the room for confirmation, he found blood all over the floor. He was already dead." Zhao Lei said, "Just like Zhang Chi's case, the deceased's mouth was full of teeth. They were all removed."

Immediately, Cui Jun and Zhou Zheng looked at each other, and they could see similar glints in each other's eyes.

By the same murderer!
Although the two hadn't seen the plot of the murder scene, they had already determined in their hearts that the murderer was the same person just by virtue of this special "symbol".

"Where is the victim's room?" Cui Jun asked again.

"Room 202 on the second floor, people from the trace inspection department have arrived. There are obvious signs of fighting in the room. Go up and have a look." Zhao Lei said.

"Fight marks?"

Zhou Zheng frowned slightly, but this was different. In Zhang Chi's case, the victim had almost no injuries. If Zhang Xin had injuries, the murderer's method of killing had changed.

How is this going?

A big question mark suddenly popped up in Zhou Zheng's heart. With such a question mark in his arms, he followed Cui Jun into the Longwan Hotel and stepped on the stairs leading to the second floor.

(End of this chapter)