Chapter 122 The murderer had planned it in advance and notified the dinner party in advance!

Can a capsule-sized amount of potassium cyanide powder kill people in a short period of time?

Su Ming's question.

The eyes of several people present instantly lit up, and they immediately thought of a possibility.

Shen Lin was stunned for a moment, and then used her professional knowledge to seriously affirm.

"Of course it can."

"Take the common drugs in our country as an example. The weight of the powder in the capsule is between 0.5 grams and 1 gram."

"Of course this refers to the weight of the drug powder in the capsule, not the weight of the entire capsule."

"And the lethal dose of potassium cyanide is roughly between 0.1 grams and 0.2 grams, which can cause poisoning and death to adults in a short period of time."

"If the dose is increased to 0.5 grams, or even more than 1 gram, I think once the capsule shell dissolves, it will inevitably cause people to lose consciousness, spasm their hands and feet, and die of myocardial infarction in a very short time."

"That kind of short-term large dose of potassium cyanide will cause people to go black and coma due to cardiac arrest, and naturally they will not have time to call for help."

"At the same time."

"If the capsule shell that wraps the powder is made of different of materials, the time required to melt in the stomach will also be different, which can control the time of the crime to a certain extent. "

"And the most important point is..."

"Even if cyanide can kill very quickly, the capsule shell made of gelatin can be melted and disappeared with warm water."

"So even if the victim loses vital signs, the capsule shell can be completely melted by gradually lowering the temperature, so that the capsule shell cannot be found in the stomach contents during the autopsy."

"Cyanide will be absorbed by the mucous membrane at the bottom of the stomach and dissolve in the blood very quickly."

"As long as the victim's body is found one hour after death, the death symptoms of eating and injection are basically the same."

When Shen Lin said this professional forensic autopsy knowledge.

Even Liu Yang, who is more proficient in officialdom now with his degraded criminal investigation skills, immediately understood Su Ming's intention to ask about the capsule.

Bai Yu, wearing a suit, played with the pipe in his hand and analyzed thoughtfully.

"According to Brother Ming's idea."

"The method used in this movie theater poisoning case should be..."

"The murderer did not use a syringe to inject cyanide poison into the victim, but instead used capsule drugs to hide it."

"You only need to deal with the gelatin shell that wraps the powder, then you can naturally control the approximate time of the victim's poisoning."

"Then."

"The pinhole wound on the victim's buttocks is probably just a false clue used to confuse the audience, but it feels like the murderer can be roughly identified."

"First of all, normal people will not take medicine handed over by strangers, but now the victim is likely to have died after taking capsule drugs, which means..."

"The murderer is likely to know the victim, and even the relationship between the two is very close, so the drugs can be exchanged."

"Secondly, if you want to create a pinhole wound on the victim's buttocks, if it is a close friend, it is not difficult to create it. It can be done during a fight or by hiding the needle in the bed."

"Under this inference."

"Then So the murderer of this case is most likely someone who is familiar with the victim. "

"In theory, once a case occurs, the people around the victim must be eliminated as suspects at the first time, but the special nature of potassium cyanide should have made Xiangcheng Criminal Investigation ignore this point at the time."

"Because."

"Cyanide kills very quickly. In just a few minutes or even seconds, the victim's myocardial ischemia can be caused to die."

"In addition, the pinhole wound on the buttocks of the deceased found in the autopsy undoubtedly focused the police's attention on the seats in the cinema or the people at the scene."

"And the real murderer only needs to have absolute evidence of absence when the victim's capsule is opened to death, then he can completely clear his suspicion in the eyes of the police."

→

"In Conan and other crime-solving works, this is a relatively common case method."

"But it must be admitted that it can indeed evade police investigation very well, especially with the deadly toxicity of cyanide."

"There is indeed a possibility of omission..."

Hearing this.

Liu Yang recalled seriously for a few seconds, then shook his head and frowned.

"No."

"I just recalled that our Xiangcheng Criminal Investigation Team had set its main target near the cinema to screen for possible perpetrators."

"But for rigorous considerations, we actually checked whether the victim had taken any medication or had been to the hospital for medical treatment."

"But there was no result either. At least for a few weeks, the victim had no consumption record of seeing a doctor in the hospital."

"There was no residual drug metabolism in the blood after the autopsy."

In response to Liu Yang's rebuttal and confusion.

Su Ming did not think much about it, and immediately told the story.

"Director Liu, there is a detail you forgot."

"I read the file yesterday. The victim is a graduate of software major, and the family's financial situation is not good. He applied for a poor student."

"Even for tuition, he applied for a national student loan. He was very frugal in his daily life and meals. Later, after he became a programmer, his financial situation was a little better, and he was able to go to the movies and so on."

"But judging from the victim's usual frugality, is there a possibility..."

"Even if it's unfinished cold medicine, he will deliberately save it for the next time he catches a cold."

"If the physical discomfort is due to the same symptom, the victim does not need to buy any more medicines and can just take the remaining medicines."

This moment.

Liu Yang was stunned immediately. At that time, Xiangcheng Criminal Investigation Brigade did not think of this detail at all.

But Su Ming's inference was not over yet. He narrowed his eyes and continued his analysis seriously.

"Compared to cold medicine."

"I'm actually more inclined to believe that the murderer probably disguised potassium cyanide powder as a stomach medicine."

"Because of the victim's coding job, he was destined to work a lot of overtime, and he had irregular meals due to his busy work. At the same time, in order to save money during college, he must have skipped breakfast as much as possible."

"According to a professional questionnaire report, among college students, the probability of stomach problems among college students with poor family conditions is much higher than that of students with better conditions."

"The time when stomach pain occurs is mostly in the evening after eating, or in the morning after not eating."

"The deceased was poisoned late at night. I think it is most likely that he took a capsule drug similar to Omelatzo in advance to prevent stomach pain."

"Office workers who suffer from stomachache all year round will basically have a variety of temporary stomach medicines to relieve pain. People like the victim who are used to being frugal will naturally not be willing to go to the hospital every time they have stomach pain. It is normal to buy medicine as a backup."

"But the problem is..."

Speaking of which.

Su Ming paused for two seconds, then tapped the whiteboard lightly, narrowed his eyes and spoke slowly.

"Since the victim suffers from stomach pain all year round, he must have exercised some restraint and would not overeat and try to reduce the number of stomach pains as much as possible."

"Then on the day he was poisoned."

"Why did the victim take stomach medicine in advance? Did he guess that he might have stomach pain that night?"

"Still..."

"He already had a stomachache and was reluctant to give up the movie for which he had already bought tickets, so he took medicine to survive?"

"So I now very much suspect that on the day he was poisoned, the victim probably had a special dinner or party that he couldn't refuse."

"And the murderer created this incident specifically around this dinner party that had been notified long ago..."

"Potassium cyanide poisoning case in private theater!"