Liu Ming agreed and turned around and tapped on the keyboard, and soon the screen appeared a clip of the two of them in contact that day, and when he looked at Captain Zhuge and told me, "Did you see it?" Did you find anything? He Xiao. ”

I looked at the screen carefully, and suddenly found that Qi Gaoyang had one hand in his trouser pocket all the time, and the other hand was swinging.

I remember that at that time, didn't Qi Gaoyang say that he opened the lid of the cup with one hand and poisoned it with the other? If he had one hand that never left his trouser pocket, how did he achieve the situation described above?

I pointed out this discovery in front of Zhuge Chengtian, and he nodded with satisfaction: "The problem is here, in addition, I investigated that Chen Qiming has not participated in any giant investment projects recently, and he has not received 90,000 yuan in his account, so what Qi Gaoyang said before should be false." ”

Hearing Captain Zhuge say this, technician Liu Ming said: "It may also be because Chen Qiming deliberately said that he wanted to invest and deceive Qi Gaoyang to lend him money, and it is possible that Chen Qiming took the 90,000 yuan and spent it!" ”

"This should probably not be big, although 90,000 is not particularly much, but ordinary people will definitely deposit it into a bank account, if his account does not have the source of funds for the 90,000, it can be said that he has not taken the 90,000 at all." Zhuge Chengtian said.

At this time, I also understood, when I was at the Jinghong Police Station, I thought that my criminal investigation ability was first-class, but here in Captain Zhuge , I still feel inferior to him, it seems that Captain Zhuge is really powerful.

Now we have to investigate Qi Gaoyang's relatives, I actually wanted to go to her wife Zhao Damei before, but I only heard that Qi Gaoyang went to the detective hall to turn himself in, I never thought that now I would always go to her.

According to the information provided by the household registration department, we confirmed that Qi Gaoyang's address was a small bungalow on Guanghong 3rd Road, and when we came to this place to find Zhao Damei, I directly took out the police to indicate our identity.

I found that a detective was coming, and Sister Zhao was not surprised, so I asked her: "Do you know that your husband went to poison and kill someone?" ”

"I know, after he turned himself in, several detectives came to me, and they told me about it at the time." Sister Zhao took us into the house and sat down.

"So has Qi Gaoyang bought any rat poison recently and put it at home? Did he have anything unusual on the day of the crime? Or what other strange things have you said or whatever? ”

"This, yes, he seems to say that there are too many rats at home, so I don't know where to buy some rat poison back, but he told me that the pack of rat poison seems to be a little less, and then said that the rest of the rat poison is more dangerous to put there, so he threw it away, the day before the incident, he suddenly saw something news on the TV, his look was very panicked, so he said that he didn't come back after he went out, and then the detective came to my house I learned that he poisoned and killed someone."

"Well, do you know where the missing part of the pack of rat poison went?" I asked.

"I don't know, we didn't find it until the end." Zhao Damei replied.

"And who keeps your passbook?" I asked.

Zhao Damei said: "I, he works as an editor outside, and I take care of it at home." ”

I asked, "During this time, did your husband ask you for 90,000 yuan?" ”

Zhao Damei replied: "No, he has always been very frugal, he only saves money and basically doesn't spend money, let alone take so much money from me." ”

Having determined these two points, I can infer that this Qi Gaoyang is really lying.

Then Zhao Damei began to cry and said: "I'm really curious why Qi Gaoyang, who is usually so gentle, would he kill people, did I see him wrong?" ”

Saying this, Sister Zhao kept crying and complaining on the side, if it weren't for Guo Meng comforting her here, I wouldn't know how to face it.

There are only so many clues that Zhao Damei has provided us, I have investigated Qi Gaoyang's family, only Zhao Damei and himself are his daughter Qi Xiaoguo, this female biological research institute, I have already gone to her before, if she took part of the package of rat poison, then ......

I suddenly thought of something, and immediately returned to the detective hall with Guo Meng, I mentioned something to Zhuge Chengtian, he asked me what I found, I didn't answer first, although at that time, although only Liu Qiulan and Qi Gaoyang appeared in the surveillance camera, but between classes, there were a few female researchers in the laboratory to help a mathematics professor clean up the classroom, the murderer may have poisoned Chen Qiming's cup in advance, and then he was poisoned as soon as he filled the cup with water.

"But there are so many people, how did the murderer poison the law, and what method did he use to poison it, have you ever thought about it?" I was stopped by Zhuge Chengtian's words, it is true that I have no way to confirm this, it seems that I have to investigate before I can draw a conclusion.

I had to go to the evidence room and have someone take out the magnetized cup for me and examine it.

At this moment, I found that there were a lot of marks on the edge of the magnetized cup, Zhuge Chengtian told me that this should be a trace left when drinking tea, but I replied that it was not necessarily, so I boldly did an experiment in front of him, and asked Guo Meng to bring me some glue and a pack of instant banlan root, and when I glued the glue to the lid of the cup, I put down those banlan root particles and injected water.

Seeing this phenomenon, I explained to Zhuge Chengtian: "At that time, when Chen Qiming drank the first cup of water, because the water in the cup had not yet come under the lid, he did not have a poisoning reaction, but the second time he returned to the office and filled it with water, and when he walked around from the office to the laboratory, the cup was shaking, and the rat poison on the lid fused with the water in the cup, so Professor Chen was naturally poisoned as soon as he returned to the laboratory and drank the glass of water!" ”

Hearing my words, Zhuge Chengtian praised: "It seems that this is really the case, I found out that there are still doubts in this case, but if it weren't for you, I wouldn't have figured out where the doubts were." ”

I said that the captain you have won the award, and then Guo Meng next to him said: "Now that I know that Qi Gaoyang is lying, why don't we interrogate him again?" ”

"No, since this guy has made up his mind to say that he is the murderer, no matter how many times you interrogate him, it will not work, if you go at this time, it will alarm him, and it is not good to be shocked if you don't get the information." Captain Zhuge replied wisely.

I also think he's right, but now we're back in the technology department, and we're going to look around the biology lab corridor that day, and make sure again that it's just the girls and the female professor of mathematics who entered the lab during recess.