Chapter 670: Heart Pounding

Qi Changye is a person who is particularly good at observing. This is his capital for making a living.

Just like a minute ago, he observed that his colleagues' toes were slightly pointing outwards, and he knew that his colleagues were already impatient. After all, whether this case was a case that needed their jurisdiction was uncertain, let alone the fact that the case had no clue at all.

However, at this very moment a minute later, Qi Changye observed again that his colleagues' toes had all pointed back.

This case—now it is confirmed to be a murder case, and it is showing major progress, so much so that everyone has to pay attention.

Of course, more attention is given to Jiang Yuan. Currently, it seems that his understanding of this case is far beyond others.

"Put the toxicology test aside for now. Let's assume Zhou Xiangyang was indeed poisoned to death by aconite. I heard what you said just now, there are water marks on the inside of the medicinal wine, was it moved by someone?" Qi Changye's colleague didn't hold back anymore and stood out to ask.

"It must have been moved, otherwise there wouldn't be water marks. And, analyzing from the time we surveyed, when the medicinal wine was touched, Zhou Xiangyang must have already died." Jiang Yuan was very firm about the parts he could confirm.

"So, the purpose of this person touching the medicinal wine was to... take the aconite out?" The colleague's thinking was also very sharp. At this moment, he calmed down and immediately followed Jiang Yuan's train of thought.

Jiang Yuan didn't intend to hide it either, nodding and saying: "I think this is a more likely reason. The effective components in aconite are mainly aconitine, mesaconitine, and hypaconitine. Aconitine is highly toxic, but after processing, aconitine will eventually hydrolyze into hypaconitine, and its toxicity is only one-thousandth of aconitine."

Seeing that the few were listening to the popular science seriously, Jiang Yuan continued: "A total of two bottles of medicinal wine soaked with aconite were found in Zhou Xiangyang's home. It is said that he often drank it to treat rheumatism. From this point of view, Zhou Xiangyang should know how to use aconite. In his medicinal wine, there might have originally been only hypaconitine, with very little or no aconitine. However, he probably didn't do a toxicology analysis on the medicinal wine either, and this point cannot be verified."

"Can we check the medicinal wine and the aconite in the medicinal wine to see if we can find problems from the content? For example, the aconite in the medicinal wine only has hypaconitine, but the aconitine in the medicinal wine exceeds the standard."

"It's difficult. Because there was no standard to begin with." Jiang Yuan said concisely, and added: "The oral lethal dose of aconitine is 3 milligrams, but the oral toxic dose only needs 0.2 milligrams. Drinking two more cups might reach it. Furthermore, there is no standard for the lethal dose and toxic dose of the mixture of aconitine, mesaconitine, and hypaconitine."

The few looked at each other.

Qi Changye frowned and said: "In this way, even if we find that Zhou Xiangyang died of aconitine poisoning in the aconite, and then test the medicinal wine, even if we find that the content of aconite in the medicinal wine is enough to be fatal, because this bottle of medicinal wine has already been soaked for a long time, and the things inside were also soaked by Zhou Xiangyang or his family, so it is very likely that it will be judged as an accidental death?"

Jiang Yuan nodded slightly and added: "And, aconite that has been processed may still contain aconitine. Including the content, it is uncertain. What you just said about the aconite in the medicinal wine only having hypaconitine is also unlikely to be achieved. Secondly, judging from the reports of aconitine poisoning death, although most people's deaths have reached the oral lethal dose, some people have not reached it. Forensic doctors also do not have a standard for blood concentration of poisoning and death. In general, the dose of aconitine poisoning has individual differences, and some differences are still very large."

"It's a bit like wine brewed in the countryside." Tao Lu interjected at this time and said: "Ethanol is fine, but some produce methanol, and the amount is small. But some people are sensitive, and they have problems after drinking a few sips!"

Jiang Yuan smiled and didn't say anything. There was a slight difference, but not much.

Qi Changye and his colleagues understood, and they understood particularly well.

Qi Changye's colleague was a man with a square face. After pondering for a moment, he said: "So to speak, the murderer used aconite to poison, and the means were very clever?"

Tao Lu coughed twice and said: "Poisoning and killing is inherently more hidden. I haven't seen anyone use aconite, but I have heard of it."

The square-faced man didn't pick up the topic, thought for a moment, and said: "The state after aconitine poisoning death is also easier to confuse people. I looked at the autopsy report, and there was no particularly strange place, which shows that this poison has no specificity, the toxicity is strong, it is relatively rare, and it is easy to miss the detection. It is not like cyanide, where the corpse spots will be cherry red, the body cavity and blood can smell the taste of bitter almonds, and the organs will also have necrosis. Some people will even scream when they die..."

Before the office fell into an awkward silence, Qi Changye said: "So to speak, this case must be treated solemnly?"

He was looking at the square-faced man, obviously asking whether to take over the case.

Before the two could negotiate a result with their eyes, Jiang Yuan coughed twice and said: "That..."

"Team Leader Jiang, just say what you have to say." The square-faced man turned and smiled.

"I want to update a little more... Actually, it should be written in the survey report that there are no signs of intrusion in Zhou Xiangyang's house, no signs of picking locks, and no signs of prying doors and windows." Jiang Yuan paused and said: "The murderer should have a key. Either it was an acquaintance committing the crime, it is unlikely to be tricking the door open."

In some stories, it is written that one party designed various scenarios in order to make a key mold and replicate the key. In fact, prying locks and opening locks is a simpler matter, and some petty thieves can do this kind of thing. However, what petty thieves cannot do is cover up the signs of intrusion.

Regardless of whether it is a single hook or a bump key, as long as it is a standard lock, it will leave traces if you want to open it. If the on-site survey personnel survey carefully, they will always find something.

The doors and windows of Zhou Xiangyang's house are all high-end goods, and there is no possibility of opening them without traces.

Jiang Yuan had already said this, and the square-faced man couldn't help but frown and said: "People who have the key to Zhou Xiangyang's house... the nanny?"

"I think this possibility is relatively large. If not, the case is really more complicated." Jiang Yuan looked at Tao Lu and added: "I have discussed it with Team Leader Liu."

Tao Lu smiled and nodded, then looked at Qi Changye and his colleagues and said: "If it is the nanny committing the crime, the possibility of an ordinary criminal case is relatively large. If it is not the nanny, I will notify you again?"

The deceased was discovered by the nanny, and it was also the nanny who reported the case. The nanny also knew that Zhou Xiangyang had the habit of drinking medicinal wine containing aconite. At the same time, the nanny also had plenty of time to put in the aconite, wait for Zhou Xiangyang to drink himself to death, and then take it away.

Even, if Zhou Xiangyang did not die on time, the nanny could wait...

Of course, there are also a billion possibilities that the murderer replicated the key of the nanny or Zhou Xiangyang's family members, then poisoned, then waited for Zhou Xiangyang to die, then took away the aconite, and avoided surveillance throughout the process—if it is really this situation, it is better to bribe the nanny, or get rid of the nanny, and replace her with someone else...

If it is really a "billion possibilities" situation, then perhaps it really needs the participation of Qi Changye and his colleagues, but everyone present has practical experience. This kind of fine, complex, and high-cost criminal activity is normally not presented to everyone in the form of taking off pants to fart.

"Then... we will go back first." The square-faced man was also decisive, with no expression on his face, just smiling at Jiang Yuan and saying: "Jiang Yuan of Ningtai, the murderous flames are surging."

After speaking, the few quickly retreated from the office.

Leaving Tao Lu, Jiang Yuan, and a windowsill of food.

"Remember to take the invoice for reimbursement." Tao Lu smiled with his eyes shining, his heart pounding. ===== CHAPTER 671 =====