"Zhuge Cong, do you have any opinion on this case?"

Chen Yi directly named the four people in the provincial department, including Xia Lan, compared with each other, only Zhuge Cong can give a reasonable personal inference at the moment after reading the dossier.

He should have the ability.

Double master's degree, specializing in psychology, is definitely stronger than Fu Guoyong and Cheng Hanjun in analyzing problems.

Several people looked at Zhuge Cong, who was no longer humble and said: "Among the four suspects, the most suspicious seems to be Zhao Jianhui, and the last meal he had with the victim was actually quite strange. ”

"Judging from the inquiry records and chat records, Zhao Jianhui failed to meet Gao Xiaofei many times, and finally achieved the goal by not harassing him after eating this meal, and the motive and preparation for the crime are more reasonable."

"However, considering the conditions of the crime, I think it is unlikely that Zhao Jianhui is the murderer in this case, and he does not have the opportunity to poison."

"Therefore, for those who are more suspicious, I still tend to favor the victim's roommate, as well as his boyfriend."

There is nothing wrong with these words, Zhuge Cong's inference focuses on the conditions of the crime, not to mention the small probability of poisoning methods, the perfect poisoning conditions are Gao Xiaofei's roommate and boyfriend, they are together almost all day long, and there are many opportunities.

On the other hand, Zhao Jianhui is just a suitor, and it is unlikely that he will come into contact with Gao Xiaofei's vitamins.

Chen Yi didn't comment, and looked at Cheng Hanjun and Fu Guoyong: "What do you think?" ”

Cheng Hanjun stretched out his hand to Zhuge Cong: "Give me the cigarette, I'll smoke it." ”

"Huh?"

Zhuge Cong was surprised, didn't you smoke me.

"Don't talk nonsense, give it to me." Cheng Hanjun repeated.

Zhuge Cong took out his cigarette case and handed it over.

After taking it, Cheng Hanjun took out one from the cigarette case sideways, and then returned the cigarette case to Zhuge Cong, and said at the same time: "How many are there?" ”

Zhuge Cong was inexplicable: "How do I know this?" ”

Cheng Hanjun chuckled: "I don't know, right?" I just put three poisonous cigarettes in it, and if you get it, you're going to be poisoned. ”

Zhuge Cong frowned slightly, and Cheng Hanjun used a simple practice to restore the possible poisoning methods.

The murderer asked Gao Xiaofei for vitamins, and put three poisons in it while taking it, there are many people who can do this, including Zhao Jianhui, as long as they know Gao Xiaofei, they may be poisoners.

Vitamins are food, food is hygienic, and the possibility that Gao Xiaofei directly handed the bottle to the suspect without her own hands is still very large.

After a little silence, Zhuge Cong said: "What I just said is a high probability, there are many poisoning methods, this is for sure, the murderer has not been caught yet, the difficulty is that it is difficult to leave traces in the poisoning process." ”

Fu Guoyong has never interjected, compared with the two, thinking analysis is his weakness, and it will be embarrassing if he says it wrong.

Chen Yi snuffed out his cigarette, he couldn't see any expression on his face, he turned to look at Qin Fei and Lin Chen: "What about you, what do you think?" ”

Qin Fei wanted to listen more and talk less, and at this moment, in the face of Chen Yi's active inquiry, he spoke: "I have a question, why are there three poisons in the bottle, is this number intentional or unintentional?" ”

"What do you mean?" Hearing this, Zheng Congliang began to ask.

Qin Fei: "I mean, one poison is enough, anyway, sooner or later, you will eat it, why put three, isn't it a little strange?" ”

Zheng Congliang didn't react.

Is there any difference?

Chen Yi: "Why do you think?" ”

Qin Fei: "If it was deliberate, the purpose was to let the police find out that the poison came from the bottle containing vitamins." ”

Chen Yi: "Go on. ”

Qin Fei: "Uh......"

He couldn't continue, normal homicide suspects were thinking about how to cover up the murder method, how could they take the initiative to tell the police, not to mention that the forensic doctor could also find out the type of poison, it seemed unnecessary.

Seeing this, Chen Yi spoke: "What Qin Fei said just now is right, the three poisons may be intentional, assuming that the suspect is intentional, then the purpose is to let the police find out and determine that the poison comes from the bottle containing the vitamins." ”

"From the monitoring and autopsy results, we can see that the victim Gao Xiaofei took two vitamins, one of which is toxic, and the general dosage of vitamins is one to three, which is no problem, two may be Gao Xiaofei's personal habits."

"Then, three poisons are the safest, even if Gao Xiaofei was unlucky at the time, both of them were poisonous, there was still one left in the bottle to help the police lock the direction of the poisoning investigation, no matter where Gao Xiaofei died of poisoning, no matter when it was discovered, it can be guaranteed that there is still one left in the bottle."

Help??

This word is very special, and everyone present has doubts in their hearts.

Chen Yi continued to speak: "All the unreasonable actions of the suspect are actually to get away with the crime, in order to disrupt the direction of the police investigation, if the purpose of the three poisons is to help the police lock the line of poisoning, then the real situation may not be poisoning, or that the real cause of Gao Xiaofei's death has nothing to do with those two vitamins." ”

After listening to Chen Yi's words, Zheng Congliang couldn't help but say: "Team Chen, but the autopsy showed that Gao Xiaofei did die of poisoning, and the poison was indeed trivalent arsenic in the bottle." ”

Chen Yi turned his head: "Now let's brainstorm and discuss the suspicions, and slowly analyze, Gao Xiaofei did die of trivalent arsenic poisoning, and there is indeed poison in the bottle, so it doesn't make sense for the suspect to help the police lock the direction of poisoning, this matter can be put aside first, as for why Qin Fei proposed three pills, maybe there is no deep-seated reason, the amount in the suspect's hand can only support three." ”

"Now I want to talk about another situation, Zheng Zhi, didn't the forensic doctor in the bureau mention it to you? Vitamin C and pentavalent arsenic can undergo a chemical reaction to become trivalent arsenic. ”

Zheng Congliang was strange: "Pentavalent arsenic? ”

This is not within his knowledge.

Chen Yi: "Seafood is the food with the highest pentavalent arsenic content, especially shrimp. ”

Zheng Congliang's face changed slightly, and he immediately remembered the surveillance of the seafood cafeteria, which was to investigate whether Zhao Jianhui had poisoned him, and he personally watched it many times.

Gao Xiaofei ate a lot of lobster, and a considerable part of it was taken by Zhao Jianhui.

"Really?"

Zheng Congliang already understood what Chen Yi wanted to say, did Zhao Jianhui do it on purpose?

Qin Fei, Zhuge Cong and the others were equally surprised, and hurriedly took out their mobile phones to search, and found that this was indeed the case.

Vitamin C and pentavalent arsenic will synthesize trivalent arsenic, and doctors emphasize that when eating seafood, you should try to avoid eating vitamins, otherwise there will be a risk of poisoning.

Did Zhao Jianhui know about this?

If he knew, then he knew that Gao Xiaofei often took vitamin C, so when they met for the last time, they deliberately brought Gao Xiaofei to the seafood cafeteria, deliberately took a lot of lobsters, and used the chemical reaction to quietly poison Gao Xiaofei.

What about the bottle of poison? Is it related to Zhao Jianhui?

Is there such a possibility, Zhao Jianhui poisoned, in order to disrupt the direction of the police investigation, three pills, let the police focus on investigating the poisoner, since the poison comes from a vitamin bottle, then it is naturally impossible for the case-handling personnel to focus on other places, but they can get through in confusion.

Wrong wrong......

Isn't that redundant?

Since it has been very secretly and successfully poisoned, is it necessary to stage this play again?

There is no need to add to the problem and increase the risk of exposure.

Or, just poison.

Or, just eat seafood.

Why are you in such trouble??

In a few short seconds, everyone thought a lot, and Chen Yi said at the right time: "Don't think about it, Gao Xiaofei's death has little to do with seafood, the reaction between the two to form trivalent arsenic requires a large amount of vitamin C, at least more than five tablets, and the consequence is only poisoning, not death." ”

"Gao Xiaofei only eats two slices at a time, so it's not a big problem."

"The reason why I bring this up is to ask you to think about whether Zhao Jianhui knows that the victim cannot eat vitamins and seafood at the same time."

Zhuge Cong: "If you know...... What does he want to do?? Get you back? Revenge Gao Xiaofei didn't choose herself? After all, after chasing for two years, watching Gao Xiaofei and her boyfriend holding hands every day, I must be very awkward in my heart. ”

Zheng Congliang frowned deeply and said, "There is still this layer? Then Zhao Jianhui is suspected of intentional injury, but as long as he does not admit this kind of thing, we have no evidence. ”

Chen Yi: "If he knows, the poisoner should not be him, if he doesn't know, it's hard to say." ”

Zheng Congliang kept up with Chen Yi's investigation rhythm, young people and their old criminal police officers have different thinking, they like to analyze the possibilities in many aspects, to find the most reasonable point, and then conduct targeted investigations.

The old criminal policeman is more accustomed to doing things step by step, using traditional criminal investigation methods to break through the cocoon and slowly move forward.

Each has its own advantages and disadvantages, depending mainly on the nature of the case.

In this case, Chen Yi seems to want to use ...... Exclusion.

Several people discussed for half an hour, and Chen Yi spoke: "I'll go to Suicheng University and meet the people I should see again, Zheng Zhi doesn't have to follow, the other work in the team is arranged, and in the next few days, we will go through the whole case again." ”

Zheng Cong nodded: "Okay." ”

……

The research team left the city bureau and came to Suicheng University, which is known as the largest university in Dongzhou.

Zhao Jianhui was on the West Campus, and the vehicle was parked directly at the West Gate.

After identifying himself, the security guard let him go.

Zhao Jianhui's phone didn't get through, it happened to be class time at this time, maybe it was muted, and it was almost the end of class.

Zhao Jianhui's information was written very clearly in the file, specifically to the dormitory number, Chen Yi and his party crossed the campus and came to the downstairs of the boys' dormitory to wait.

Suicheng University's school ethos...... It's a bit weird, the weird thing is the bold action between the couple, Chen Yi even saw a certain guy put his hand into his girlfriend's clothes.

It's summer, big brother, I can see it very clearly, or you should go and open a room, it's unseemly.

Xia Lan, the only woman of the seven, also saw it, very embarrassed, she deliberately pretended not to see it, and silently sorted out the things in the briefcase.

"Universities are so open now."

Zhuge Cong's words were directly put on the bright side, Xia Lan's body froze, and she continued to bow her head and tidy up.

Cheng Hanjun said calmly: "Normal." ”

Zhuge Cong: "Is it normal?" ”

Fu Guoyong: "Normal. ”

"......" Zhuge Cong glanced at the two of them, "What have you both experienced in college, have you seen your own shadow?" ”

Fu Guoyong glared: "Don't talk nonsense, we are in the police academy, and we should ask you about this." ”

Zhuge Cong: "Our university is not like this, it is obviously what you say is normal, what does Qin Fei think?" ”

He turned his head to look at Qin Fei, who hurriedly said that he was also a graduate of the police academy.

He went to look at Lin Chen again, Lin Chen just smiled politely, and then immediately shifted his gaze, not wanting to respond to such a boring question.

Chen Yi stood at the front, as if he hadn't heard the chatter of a few people, looked at the passing students, and thought about Gao Xiaofei's death in his mind.

From the perspective of big data, poisoning is generally a common action for women to commit homicide, which may be a pre-action or a final resort.

In the case of a pre-action, the victim will be knocked unconscious with sleeping pills and other drugs, and then killed, which is difficult to achieve on a college campus.

It can only be a last resort.

If you don't consider other probabilities, Gao Xiaofei's roommate is extremely suspicious.

The contradiction between girls is much more exaggerated than that of boys, and the latter cannot commit a crime unless the contradiction is very large, so I am really anxious to scold and beat you at most, and everyone at the police station will not accept anyone, and the former ...... As long as it moves, it's a big deal, and the motivation is often very speechless.

One emotional, the other relatively rational.

In recent years, campus cases include intentional injury, theft, etc., and the proportion of women is not small, whether it is a victim or a suspect.

What makes people not talk much, Chen Yi has seen a lot.

is weak and quiet on the surface, but in fact he is more vicious than men, or how to say that he is the most poisonous woman's heart.

"If it's her, you need to start with the source of the poison."

While thinking about it, Chen Yi looked not far away, there were six people walking side by side towards this side, and Zhao Jianhui was inside.

The boys' dormitory is exactly six people per room.

The distance between the two sides is getting closer and closer, and Zhao Jianhui, who is in white short-sleeved and black shorts, quickly saw Chen Yi and the others, and his pace slowed down.

When it was determined that the other party was coming at him, Zhao Jianhui stopped on the spot.

Chen Yi walked over head-on.

Zhao Jianhui was stunned for two seconds, then decisively turned around and left in the opposite direction, and the speed became faster and faster, almost running.

Fu Guoyong immediately chased after him, caught up with him in less than thirty meters, and then brought him back like a chicken.

"Run what you?" Fu Guoyong asked coldly.

Zhao Jianhui cried with a sad face: "I didn't run, I suddenly remembered that something happened, comrade police, what's wrong, won't it be for Gao Xiaofei?" ”

Chen Yi looked at the other party: "How do you know that we are policemen." ”

Zhao Jianhui: "I'm used to it...... Look at the special image. ”

The five people in the dormitory saw that the situation was not good, and they didn't say much and decisively smeared oil on the soles of their feet, and they seemed to be used to it.

A year ago, Zhao Jianhui apparently had a lot of dealings with the police.

Chen Yi waved his hand: "Let's go, find a place to talk." ”

Zhao Jianhui: "Can you not go?" ”

Chen Yi: "What do you think?" ”

Zhao Jianhui was helpless: "Okay...... Anyway, you guys are so good-looking, I haven't seen them last year. ”

Chen Yi: "We are from the provincial government. ”

Zhao Jianhui was taken aback: "Huh?!" ”

(End of chapter)