Zhang Haichuan also frowned and said: "There is no trace of the monitoring being modified, is there anything wrong with it, I am looking to see if the surveillance video in front of the dormitory has Mo Mo Jiajie's figure!" ”

After Zhang Haichuan finished speaking, he began to investigate a surveillance video before the boys' dormitory, and the surveillance video showed that when they expected to be about fifteen minutes faster, Mo Jiajie appeared in the surveillance video, and Mo Jiajie looked relatively normal in the surveillance video, because he stayed up late and drank alcohol, his face was not very good, but his walking posture was quite stable, and there was no sign of poisoning.

After Mo Jiajie entered the dormitory, about nineteen minutes or so, Jiang Xun and Mu Qingyuan also had breakfast and went upstairs, and after a while, they saw Jiang Xun hurriedly calling someone.

You Jia frowned after watching the surveillance video and said: "This time is advanced, could it be said that Fu Jia and the driver lied, or did they change the surveillance in the car." ”

At this time, Chen Yang said: "It shouldn't be possible, we didn't see Mo Jiajie in front of the gate, maybe the situation is like this, Mo Jiajie did get off at that time, but he didn't return to the dormitory through the normal road strength, as far as I know, this university has a total of two gates, one is the east gate, one is the south gate, and now the monitoring we are looking at should be the east gate, this gate is closer to the men's dormitory, and the other is farther away." If Mo Jiajie went to the east gate, it is estimated that it will take half an hour to walk to the men's dormitory, my personal opinion is that Mo Jiajie should go through the wall to enter, you imagine that position, in fact, the location where Mo Jiajie got off is very close to the boys' dormitory, if there is no wall, it should take less than two minutes to return to the dormitory from that location, but because of the existence of that wall, we will think about how long it will take to walk from the gate to the boys' dormitory. But it's much more convenient to go over the wall, I remember that the wall seems to have broken a little bit for some reason, and it is being repaired recently, and I think we can call and ask, have there been students who have passed through there before? ”

After Chen Yang finished speaking, the rest of the people nodded to express their agreement with his idea, and felt that his statement should be the situation at that time, but whether it was exactly what Chen Yang said, it still had to be seen if there was monitoring or students on the other side of the wall to prove it.

"Actually, this matter is also very simple, we will investigate each dormitory, but it will take a long time to waste, but I think as long as all our members are dispatched, it should be less than half a day to ask, whether anyone saw Mo Jiajie go in over the wall that day, if he really went in over the wall, then the location of the incident, we should change it to the dormitory, it should be Mo Jiajie who accidentally ate something in the dormitory, or someone deliberately drugged Mo Jiajie's cup, which will cause the situation later. We all took everything in Mo Jiajie's dormitory that could be touched and handed it over to the forensic card for testing, but nothing was detected, right? You Jia asked with a slight frown.

Lian Yinglan nodded and said: "Well, nothing was detected, I thought the situation should be normal at that time, after all, according to the situation at the time, Mo Jiajie should have been poisoned before, but now it seems that this is not the case at all, fifteen minutes in advance, then the location of the poisoning should be in the dormitory." And this fifteen-minute gap is actually very crucial, if there are these fifteen minutes, Mo Jiajie has time to finish some things in the dormitory before he falls to the ground. ”

Before this, You Jia and the others found that there seemed to be nothing suspicious after a strict investigation, from the four people who investigated at the beginning to Zhang Sheng later, it seemed that everything proved that Mo Jiajie was completely normal outside, and the four people who went out with him had no purpose of committing the crime at all.

They are just friends with Mo Jiajie, and You Jia also arranged for Ji Ziyue and Du Mingyuan to investigate whether they had emotional entanglements with Mo Jiajie, but after the investigation of the two of them, there was no emotional dispute between them, not to mention Fu Jia and Qingyu, the two of them simply admired Mo Jiajie's appearance, had a good personality, and were suitable for being boyfriends, and their feelings for him were not very deep.

In this case, there should not be a deep contradiction, after all, several of them look normal, not like the kind that will take the initiative to commit crimes, and now the four of them can't leave Chengnan City for the time being, but judging from the current situation, as long as they don't have a weak heart in their hearts, it is absolutely impossible to leave Chengnan City now.

After that, Luo Ming determined that this was a strong poison, and the onset time was relatively short, it should be within ten or twenty minutes, originally according to Luo Ming, the most likely poison should be a few of them, but now seeing that Mo Jiajie did not follow the usual path at all, he returned to the dormitory fifteen minutes early.

Within fifteen minutes, it is entirely possible that something will happen, maybe after Mo Jiajie went upstairs, there was some uninvited guest in the dormitory who had a conflict with him, and gave him something, Mo Jiajie was poisoned after drinking or eating it, just when You Jia and others were still thinking about the process of this matter, Luo Ming hurriedly walked out of the forensic examiner, still holding a report in his hand, and saw You Jia and others just standing there to discuss things, he walked over directly and handed the report in his hand to You Jia.

After You Jia took the report, he was attracted by the big words on it, carbon tetroxide concentrate poisoning, carbon tetroxide is one of the carbon oxides, extremely unstable, inhalation poisoning patients are often accompanied by eye and respiratory irritation symptoms.

You Jia raised her eyes to look at Luo Ming, frowned, and said, "Carbon tetroxide concentrate poisoning?" ”

Luo Ming sat aside and said: "The concentrate of carbon tetroxide is colorless, volatile, non-flammable liquid, with the slightly sweet smell of chloroform, and has an indescribable odor, slightly soluble in water, miscible with ethanol, ether, chloroform and petroleum ether. After this kind of thing enters the human body, it will cause kidney failure and liver dysfunction, I dissected Mo Jiajie's corpse, and also looked at some treatment certificates issued by the hospital before, I found that the effect can be the same as carbon tetroxide, I also experimented before, which is obviously ten times the amount. If you know from the beginning that this is carbon tetroxide concentrate poisoning, maybe Mo Jiajie still has a chance to live, but the world is impermanent, and the murderer can be poisoned by this kind of poison, so he should not plan to let Mo Jiajie live. ”

"Is this thing available on the market? I think the labs in their university should have this thing, right? You Jia continued to ask.

This kind of thing that can only be used in experiments when you hear it, and you can't touch it at all in ordinary life, that is, things that can only be found in the laboratory of the school or the hospital.

Luo Ming nodded and continued: "This thing, generally can't be bought, if this kind of thing is regarded as poison, it is really accurate, if no one tells the doctor, it will not be able to save the patient's life in a short time, at least I dissected the corpse before and found the amount of poison, I simply want Mo Jiajie to die, I think this person should hate Mo Jiajie very much." ”

After everyone heard Luo Ming's words, you look at me, I look at you, and no one made a concluding speech for a while.

Luo Ming looked at them in surprise and said, "Don't tell me, you haven't found anything critical until now?" ”

You Jia said a little helplessly: "We can now find out that this poisoning case may have been carried out in the dormitory, and Mo Jiajie returned to the dormitory fifteen minutes earlier than expected, but we don't know under what circumstances Mo Jiajie was poisoned, whether it was after he returned to the dormitory, or if someone came in their dormitory, whether he drank or ate his own things before he was poisoned, there is still no conclusion,"

Luo Ming turned over the previous report to You Jia, pointed to the water cup from the printed window and said: "This is the picture taken before, this water cup is Mo Jiajie's, there is nothing about carbon tetroxide concentrate extracted here, originally I thought he didn't die after drinking water, but then we checked it again and found that the last fingerprint left on this water cup was not Mo Jiajie's, but Mu Qingyuan's." And I found out that the water cup must have been cleaned before you brought it back, what does this mean? Why did Mu Qingyuan clean Mo Jiajie's water cup, leaving the last fingerprint is Mu Qingyuan's and not Mo Jiajie!! ”

You Jia was instantly woken up by Luo Ming, and remembered the two people Fu Jia had emphasized before, one was Zhang Sheng, and the other was Mu Qingyuan, both of whom had a deep grudge against Mo Jiajie.

Although Zhang Sheng said that he had the intention of harming people, he did not have the intention of killing, but fortunately, in the end, Shen Miao did not plan to go to Mo Jiajie for trouble, which led to a farce, Zhang Sheng's suspicion was ruled out by them, isn't there still a Mu Qingyuan.

After Luo Ming's inspection, it was found that Mu Qingyuan's fingerprints were found on Mo Jiajie's water cup but Mo Jiajie's fingerprints were not found, which is easily reminiscent of a question, this water cup should have been cleaned after Jiang Xun left, and the person who cleaned the water cup was Mu Qingyuan, but Mu Qingyuan didn't expect him to leave fingerprints at all, thinking that all the evidence had been cleaned up by him, so he pretended to be anxious and guarded Mo Jiajie on the side. In the end, he and Jiang Xun sent Mo Jiajie to the hospital for treatment.