According to the investigation, I began to sort out what happened to Chen Qiming's poisonous hair that day.

One of the five professors was a woman, and because her boyfriend was taking classes here, she came to visit her.

Just when Chen Qiming went back to the office to pour water into his teacup with a kettle during the break from class, he kept pouring it, and he didn't know that the water was overflowing the lid of the teacup, and a male professor next to him laughed at him: "Chen Qiming, don't just look at other beautiful professors, this tea is really embarrassing!" ”

"There, you're thinking too much, I've just been feeling thirsty lately, so I just want to pour more, and I won't finish drinking so soon!"

At that time, all the professors had something to do, the female professor was sitting next to her boyfriend, and Chen Qiming was also looking at the textbook, assuming that the murderer was poisoned by Chen Qiming in the office, then he had to be in the eyes of so many professors and in such a short time, I feel that this possibility is even less likely, that is, the time when the poisoning happened should not be when Chen Qiming was in the office, so the poisoning should not be in a thermos, but in a teacup.

This thermos has also been examined by the forensic doctor, and it is only Chen Qiming's fingerprints, thinking about it, Su Xiaoyu called me and said that he wanted me to go to the forensic department to have a look.

I felt that she had discovered something, so I came here, and when I came to her work, I saw Zhuge Chengtian standing there, and when he saw me coming, he said: "Forensic doctor Su Xiaoyu said just now, two other people's fingerprints were found on the edge of the magnetized cup, but because Chen Qiming kept holding the cup, the fingerprints on it were almost covered and couldn't be found." ”

I asked Su Xiaoyu: "Then do you still have a way to find out whose fingerprints those two people are?" ”

"Try your best, but it's very difficult." Su Xiaoyu said.

After Zhuge Chengtian told Su Xiaoyu to be serious, he turned his head and asked me, "What are the results of your investigation of the woman in white?" ”

"The murderer was not her, she said that she just went to Chen Qiming to get her daughter's living expenses that day, and just quarreled a few words because he didn't give it, not because of the divorce, because they had already divorced."

"Have you checked the video? Are you sure that Liu Qiulan has not touched Chen Qiming's cup? ”

I told Zhuge Chengtian the information I got by Liu Ming's side today, the video is very clear, according to the analysis of the technical personnel, using the Skynet system, it was found that there was no Liu Qiulan touching Chen Qiming's actions throughout the whole process, and the shooting time was from 9 o'clock to 12 o'clock in the morning, and the time also coincided, I also sorted out the process of the incident, and now the conclusions are all for the magnetized cup, I feel that Su Xiaoyu can only find the owner of the fingerprint to find the breakthrough!

"So that's the case, no wonder you're so sure, could it be that our clues are broken like this, if it doesn't work, He Xiao, you and Guo Meng should go back to the Blue Cloud Biological Research Institute to have a look!"

I sighed, at this moment it is estimated that there is only this way, we only know this time that the case of Chen Qiming's poisoning was actually sent to the Internet, everyone said that there was a murderous maniac in the Institute of Biology who deliberately threw poison in the water cup, and the victims already had several professors and several researchers, as soon as the news came out, many parents of students came to the Institute of Biology to consult the situation, and even some parents took away their children who were still studying in the Institute of Biology.

Because this case has a great impact, the director of the department has put a lot of pressure on us to solve the case as soon as possible, otherwise the detective's meal will not be able to continue to mix, for a while I and all the police officers in the criminal investigation team are very nervous, but Guo Meng and I investigated again in the Blue Cloud Biological Research Institute and couldn't find any clues, and we were very disappointed that we didn't know where to investigate at the moment.

In the video of Professor Chen resting and passing through the corridor, it is clearly shown that only Liu Qiulan has been in contact with this Chen Qiming, could it be that the murderer is this Liu Qiulan? It's just that what tricks did she use to blind the police?

If that's the case, how did she poison her?

The police continued to investigate while refuting the rumors, even if Liu Qiulan's clues were broken, we didn't give up.

When I arrived at the technical department, I asked Liu Ming to call me up the monitoring in the office of the Blue Cloud Biological Research Institute that day, I focused on Chen Qiming's teacup, and looked at it carefully, and found that Chen Qiming put down some tea leaves before putting water into his teacup. After Chen Qiming's cup is filled with water, won't this become a cup of poisoned tea?

At that time, Chen Qiming still left some tea leaves in his cup that had just been drunk, so the murderer could not easily find out after adding poison at any time.

That's it! Why didn't I think of it, thinking of this, I immediately asked Liu Ming to call up the video of Chen Qiming holding an empty cup on the way from the classroom to the office of the Institute of Biology, and after our observation, we found that there were some hidden mysteries.

Just when Chen Qiming passed by the fourth laboratory of the teaching building, a bald man suddenly appeared behind him, and stopped Chen Qiming behind his back, originally this man wanted to say a few words to Chen Qiming, but he didn't know what to say, Chen Qiming received a call, so he walked to the side to listen to the phone, in this process, although it was only about 35 seconds, but if the murderer wanted to poison Chen Qiming, time was enough.

Chen Qiming walked in the direction of the office while answering the phone, and did not contact the second person after that.

But when the bald man was talking to Chen Qiming, he was also facing away from the surveillance, so we can't be sure of the man's identity, and we can't see clearly in the video whether he poisoned Chen Qiming.

The bald man saw Chen Qiming enter the office, turned around and walked to the door of the laboratory where Chen Qiming walked out just now, and looked into the laboratory for a moment before leaving the surveillance camera.

If someone wants to poison Chen Qiming, that man is the only suspect, in order to get his information, I asked the people in the technical department to work hard to investigate, through the Skynet system, we investigated all the people Chen Qiming has been in contact with recently, and it turned out that a bald man named Qi Gaoyang had also been in contact with Chen Qiming before, and met him outside the door of the Institute of Biology, and there was a quarrel, needless to say, This bald man is the same person who used to look in front of the laboratory door in the video that appeared in the corridor of the Institute of Biology that day.