If I think his first glass of water is clean, then the problem is in the second glass of water he makes.

This poison is very domineering, and there is a folk saying that it is a half-step pour, and it can be dissolved in water, colorless and tasteless, even if it enters the water and drinks it, it is difficult to find.

I said to Zhuge Chengtian: "According to the process we speculated, the problem comes from the second glass of water, then the scope can be narrowed!" ”

"Well, everyone is now locking the time from the end of the first period to the second period of Chen Qiming, and carefully and carefully conduct a series of screenings during the monitoring and visiting work, and the people from the forensic department will continue to investigate the magnetized cup for me!" Captain Zhuge assigned us a task, and then he went with me to find Liu Ming from the technical department, and asked me to take a closer look at the monitoring that had been replicated at the Blue Cloud Biological Research Institute with him.

After Liu Ming's careful investigation, it was found that a woman in white had contacted Chen Qiming when he was in the corridor of the teacher's office and had a few words with him.

How did I feel so familiar when I saw this woman in white, and I suddenly remembered that when I first went to the institute that day, didn't I see her? At that time, she walked in a weird way, and I felt that I was mistaken.

At this moment, I saw the way the woman walked in the video, and it seemed that there was a problem with her legs, could it be because of this?

Earlier, we found that Professor Chen was drinking water in the office, and accidentally looked at a beautiful professor and almost knocked over the water glass, and a male professor teased him: "Chen Qiming, don't care about looking at beautiful women, be careful of wetting your textbook." "But this has little to do with the woman's contact with Chen Qiming, so we still focus on her.

From the body movements in the surveillance, it can be seen that this woman has had a conversation with Professor Chen.

But the woman in white is facing away from the camera, so we can't see her appearance clearly, if someone is poisoning, it should be done at this time, after all, in this video, it is only seen that the woman in white has been in contact with Chen Qiming during this time.

But at present, we can't determine the identity of this woman, so we have to go back to the Institute of Biology to ask the old director, Liu Ming intercepted the back of the woman and sent it to our mobile phone, when we went back to the Institute of Biology to the old director's office, I took out the photo of the woman's back to show him: "The old director, do you know this woman?" ”

I thought it would be difficult to get information, but I never thought that the old director would directly say according to the woman's back: "This woman in white is Chen Qiming's wife Liu Qiulan!" ”

"Are you so sure you can see it from a back?"

"Of course, because she often comes to the Institute of Biology, and she wears this kind of white dress every time, we also know each other, so I can be sure that this woman is Liu Qiulan."

"And what about the relationship between the two of them?" I asked.

"The two of them often quarrel, it seems that because Liu Qiulan made money after opening a boutique, she often fooled around with some other men, because of this matter, her husband often quarreled with her, and often divorced, Liu Qiulan came to Chen Qiming because he wanted to divorce him, but he never agreed, saying that it was for a daughter who was still thinking about preparing for the college entrance examination in high school."

At this time, I thought of some possible speculations: "It may be because her husband Chen Qiming has never agreed to divorce, and she can't help but be anxious if she doesn't want to live with him anymore, so she took the opportunity to talk to him and poisoned him." ”

"I don't know much about this, now people, I'm an old man, and it's really getting more and more unclear, if you suspect that it's Liu Qiulan, you can go directly to her, her boutique is called Fumei Boutique, it's at No. 32 Guanghong 1 Road."

As he spoke, the old director shook his head and left with a sigh.

Since her identity has been confirmed, we should go directly to this woman, right, so Captain Zhuge gave me the task and asked me and another female police officer, Guo Meng, to go to Chen Qiming's house to investigate.

After receiving the task, Guo Meng pulled my clothes, and the soft place accidentally bumped into Ah Lai, and now Su Xiaoyu, who had just held the document Ali, found that her face was a little weird, and I was a little embarrassed, but she seemed to have recovered quickly Ali took something and handed it to Zhuge Chengtian......

Then, Guo Meng and I wanted to go to Chen Qiming's house, but Liu Ming from the technical department later told me that Liu Qiulan was in her boutique, so we changed our route and went directly to her boutique.

When I arrived, I told her who I was, and then I said, "Are you Chen Qiming's wife?" Recently, you know that your husband has been hospitalized in an accident, right? ”

"yes, when I was still opening the shop, a detective called me and told me that my husband had an accident, and then I went to the hospital."

"You went to the Institute of Biology to contact him this morning, was it because the other party was unwilling to divorce for a long time, so you thought of killing him with poison, and when you were chatting with him and not paying attention, you poisoned him in his cup." Guo Meng next to me said.

"No, how could I poison my husband, in fact, we have already divorced, only because of the fact that our daughter wants to take the college entrance examination, so we didn't make this matter public, the reason why I went to him was just to ask him to get some living expenses, but this guy said no every time, or if he gave 500, it would become 300 Sometimes he said that he gave it, but in fact, he didn't give it, this morning I just went to Chen Qiming to get his daughter's living expenses, why should I kill him?"

That's strange, I think if the murderer is not this Liu Qiulan, then who else, when Chen Qiming left the laboratory, she was the only one who came into contact with him, if he was poisoned in the laboratory, he had to see that other people had entered the laboratory, yes, Zhuge Chengtian and I had seen the video before, and found that no one else had entered the laboratory at all.

I can't think of a reason, I have no choice but to go back to the detective hall temporarily, and on the way Guo Meng asked me: "If the murderer is not this Liu Qiulan, then is there anyone else?" ”

"I don't know, the forensic department has also tested the magnetized cup, and it hasn't been found."

Saying that, we returned to the detective hall together, because there were no other clues, I had to do a review of the case in the physical evidence room, combined with some police investigations, I could know that there were 5 other professors working with this Chen Qiming at that time.