The next day, Wang Mengqi was reported to the bureau. Chen Shi and Lin Dongxue were responsible for questioning him. Chen Shi said, "Mr. Wang, we meet again."
"If you have something to say, I still have to work." Wang Mengqi looked impatient.
Chen Shi turned on a laptop and played a video. This was a surveillance copy from a supermarket opposite Wang Mengqi’s company. Looking at the video, Wang Mengqi’s eyebrows were slightly raised, because the person who left the company in the video was himself. And the time is four o'clock in the afternoon on November 19th.
"We asked about your alibi that day. You said you were talking to Geng Qing on the company's landline, but we called out the surveillance outside your company and found that you left at 4 o'clock that afternoon. Where did you go?"
Chen Shi continued to play the next video, which was a surveillance outside the park, then paused, pointing to a man in black who walked into the park, "I asked you if you have this suit, right?"
"I replied, that dress is very ordinary, not only I have it, it can't be used as evidence."
"But we found your taxi record that afternoon at the ride-hailing company. The destination is the park. How do you explain it?"
Wang Mengqi gritted his teeth and frowned.
"Are you thinking about one hundred secrets?" Chen Shi forced.
"If you take a taxi, you may not be able to ride!" He tried to quibble.
"It's a beautiful sophistry. It's like when US President Clinton said that the semen found on the secretary's skirt does not mean that there is a relationship between men and women. Should we ask that driver to identify you?"
"I am very busy at work. Sometimes my superiors have to cancel the previous plan after a call, so I may not take the ride even after I get a taxi." Wang Mengqi explained forcefully in a cold sweat.
"We will verify this. Regarding your alibi, I think it was forged in this way. The notice between you and Geng Qing started at four o'clock. You posted a mobile phone on the receiver and microphone of the landline. Use a landline. In fact, when you presented this alibi, I was a little skeptical. Why did you use your unit’s landline to make a call? We investigated your record of using the office landline and found that you only use it to make internal calls and never make calls. Going out, does it mean that there is no silver three hundred taels here?"
Wang Mengqi seemed to be irritated, and raised his chin, "If you want to be straightforward, don't be circumspect."
"We suspect that you killed Geng Changle."
"Ha! Just because of this, the park is open, anyone can go, and the one who has been to the park is the murderer? What's my motive?"
Lin Dongxue handed him a paternity test result. When he saw it, Wang Mengqi's expression was obviously wrong. Chen Shi said, "Geng Changle is your biological father. I think he has already told you this secret. He arranged for his daughter and Director Wei. I am asking you for money to send Geng Qing to study abroad. The purpose is to separate you. Geng Changle’s feelings for you are very complicated. You are his own flesh and blood. When he was young, he loved your mother and licked his love. Obviously he likes you, but he definitely can't let your brothers and sisters get married!"
"He likes me?" Wang Mengqi roared, "This old bastard knew who I was from the beginning. He kept asking me for this and that, but then he developed to ask for money directly, as if it were taken for granted. As a biological father, he never gave it. I’ve done anything, but now I’m here to obstruct my relationship with Geng Qing, until one day, when he tells the truth, I am his own son, and Geng Qing and I are brothers and sisters. Everything is caused by him when he was young. Now But it wants us to pay the debt!"
"So you killed him?"
"No!!!" Wang Mengqi denied, his expression clearly betrayed him, "I haven't killed anyone, and I don't know how Geng Changle died. Besides, he is my father, how could I possibly be? What about father killing?"
"Geng Changle died of a poison. We have already investigated that it costs 400,000 yuan to buy this poison. You borrowed 400,000 cash from a lending company, first hand it to Geng Changle, and then at noon before his death, hand the card to that card. The person who sold you the poison, exchanged it for the poison, and murdered that afternoon."
When Chen Shi told the truth, Wang Mengqi sweated like rain, but his face was still stubborn. He smiled happily, "These are all your speculations, there are no things at all. You said he was killed by poison, what is it? Where's the poison? If you can't find out, that would be sudden death!"
Chen Shi had expected that he would oppose the general. After all, this was an unknown poison that he bought for 400,000 yuan. Indeed, even if he was brought to court, he would be released because of insufficient evidence.
These four hundred thousand flowers are worth it!
Lin Dongxue secretly exchanged glances with Chen Shi. At this point in the interrogation, it was basically proved that Wang Mengqi was the suspect, but there was a huge obstacle in front of him.
"Detention?" Lin Dongxue asked.
"What's the point of detention?" Today's goal has been achieved, Chen Shi said, "Let's let go first!"
When he left the interrogation room, Wang Mengqi's clothes were soaked in cold sweat. Chen Shi said to him: "Mr. Wang, what have you done? You know and I know that there will be evidence sooner or later."
Wang Mengqi's arrogance was aroused, staring at Chen Shi's eyes and whispered: "Just check it out, no one can stop us from being together!"
After he left, Lin Dongxue said: "I expected it would not be so easy to confess guilt, but the clues are clear. Now I will concentrate all my energy to investigate him! I will report to Team Lin."
"I'll go to Lao Peng to see if he is making any progress."
Chen Shi came to the technical squadron and was told that Peng Sijue was not there. He was in the reading room and found Peng Sijue in the reading room. There were several thick books on toxicology, chemistry, and radiology in front of him.
Seeing Peng Sijue's dark eye circles and increasingly pale face, he probably didn't sleep all night, Chen Shi sat down beside him and said, "Would you like to work so hard?"
"I might have thought of..." Peng Sijue's voice was a little hoarse, he pinched the bridge of his nose, "accompany me to take a cigarette outside."
Coming to the corridor, Peng Sijue drew a cigarette with shaking hands, Chen Shi lit him up, and said distressedly: "You spend the night in the library looking up materials? How young do you think you are and stay up all night like this?"
Exhaling a puff of cigarette, Peng Sijue barely cheered up. He said, "If I don't understand it, I can't sleep well when I go to bed. Speaking of sleeping, I just took a nap in the library. I got the inspiration from my dream that the poisoning substance may be potassium!"
"Potassium?"
"This is a kind of radioactive substance, but it is also a trace element needed by the human body. Bananas contain potassium. Excessive potassium can cause arrhythmia and respiratory muscle arrest. If it exceeds the standard one hundred or one thousand times, the heart will stop beating instantly. In both deaths, it was found that the blood potassium of the deceased was excessive. The first thing I thought about was snake venom, because snake venom would produce this pathology, but I did not find snake venom after several times of spectral analysis and deproteinization. I was just in a dream. It is enlightened that it is potassium that kills people. High-dose concentrated potassium is a substance in the body itself. In addition, the killer has set up interference substances, so we can't detect it."
"It's great, you deserve to be a high-achieving student in the forensic department. He still came up with the answer. The suspect has just left. I'll go to chase him back and go through formalities for arrest!"
"It's useless." Peng Sijue shook his head tiredly, "This is just a speculation. Although it is a speculation that is infinitely close to the truth, it is still a speculation. We can't prove that the potassium in the deceased's body was taken in through what channel, unless we can get that. A sample of this poison proves the business relationship between the suspect and the drug maker!"
"So, we still have to catch Xu Fa?" Chen Shi said, the truth is close at hand but has to turn around, this feeling is really uncomfortable!