The total of the various elements in the human body is only 99.88%, and the missing 0.12% is probably the weight of the soul before it disappears.

The first time I heard this sentence was in the American drama "Breaking Bad".

In this sentence, I not only felt the rigor of chemistry, but also the romance of chemistry.

It's a pity that "Breaking Bad" is not an absolutely romantic drama.

My name is Qin Mu, a criminal policeman from the Serious Crime Team of the Ningzhou Public Security Bureau, and the reason why I thought of this sentence is because we have just solved a drug-related serial murder case.

In other words, this serial murder case is a purge operation within the underground trafficker D organization in Ningzhou City, and it is black eating black.

After the joint action of our criminal police and anti-narcotics police, we finally wiped out the music bar in Ningzhou City, arrested Cen Linghui, the owl of D, and seized a large number of drug-related personnel and a large number of D products.

Finally, the underground peddler D organization in Ningzhou City was completely eliminated.

It's just that a man named "Agen" fled.

For half a month, we never gave up the pursuit of Agen, and at the same time issued a wanted warrant, but still did not find any clues about Agen, and a big living person evaporated from the world.

As for the operation to arrest Agen, we have done everything we can, wanted, set up cards, assisted in the investigation, and searched for him, but we still have not received any feedback.

At this moment, our Serious Crime Team received a call from the police in Renxi City, a southwestern border area, and they found Agen in the Renxi City area.

At the same time, the Renxi City Police sent us a somewhat blurry surveillance video photo.

In the photo, a man is wearing a short shirt and trousers, and a black peaked cap is pressed low to block his eyes. However, according to the Technical Investigation Department, after comparing photos and cranial images, it was determined that this person was the Agen we had been looking for.

The Ningzhou City Police immediately contacted the Renxi City Police to discuss the next arrest and related matters related to the transfer of the suspect.

Just when everything was ready, the police in Renxi City suddenly came with an important news - Agen died, died of poisoning.

After receiving the news, the serious crime team immediately went to Renxi City to investigate the poisoning of Agen.

Since the establishment of the Serious Crime Unit, we have gone out many times to investigate cases, but this time is definitely the farthest we have traveled.

Renxi City is in the southwestern border area of our country, and the surrounding environment is complex, especially on the front line of China's anti-narcotics battlefield.

After arriving in Renxi City, we immediately handed over the case to the police in Renxi City. Now this case is a drug-related case, and the criminal police team and anti-drug team in Renxi City are on standby at any time.

"How did Agen die?" I asked directly.

Standing across from me was a man, Gong Haonan, the head of the criminal investigation detachment of the Renxi City Public Security Bureau.

"The cause of death was poisoning, and after a forensic autopsy and laboratory tests, the poison was ricin." Gong Haonan said in a deep voice.

"Ricin?" Xue Hang frowned suddenly, as if he was very surprised.

"That's right, it's ricin." Gong Haonan said seriously.

"You know ricin?" Li Meng turned to look at Xue Hang and asked.

Xue Hang nodded, spoke coldly, and gave us a brief introduction: "Ricin, is a highly toxic extracted from castor beans, only 0.2 mg can be fatal, ricin is colorless and tasteless, and the poisoning symptoms are similar to flu, there will be nausea and vomiting, abdominal pain, diarrhea, blood in the stool and other symptoms." In just a few hours, the poisoned person will die of circulatory failure. In the last century, ricin was mainly used as a toxin warfare agent weapon for international espionage and terrorist organizations to carry out assassination and sabotage activities. In 1978, international spy agents in London stabbed in public with the tip of an umbrella containing ricin, and one of the stabbed officers was poisoned to death. ”

Gong Haonan nodded and added: "He's right, ricin is an extremely toxic toxin that has no cure, and it is regarded as an artifact in the assassination world. Even highly venomous cobras are not as powerful as ricin. ”

After listening to their words, Li Meng whispered: "It seems that the arsenic used in ancient times is pediatric in front of ricin." ”

Lin Zifan pondered for a moment and said slowly: "I have seen this crop in the book, ricin is a kind of cytotoxicity, which is the most harmful to humans and mammals, as long as it is poisoned, it will almost be fatal. Because when the toxin enters the cell, it causes the cell's protein synthesis to stop completely and then die. From the point of view of manifestation, after poisoning, organs such as liver and kidney will have symptoms of hemorrhagic necrosis, and the cardiovascular and respiratory centers will be inhibited and paralyzed, resulting in death. There is still no specific drug to detoxify. ”

After a while, Jiang Tingbai asked a question that we were all very curious about: "Where did ricin come from?" ”

Hearing this question, Gong Haonan smiled bitterly and said helplessly: "Castor is a plant that can be seen everywhere in us. ”

"Everywhere?! Such a terrible ricin can be found everywhere? Li Meng let out an exclamation in disbelief.

Later, Gong Haonan explained to us: "Castor is a herbaceous plant, and it is a cash crop, and castor beans can be used to extract oil. Because of its high viscosity and low freezing point, castor oil is resistant to both cold and high temperatures, and can be used as a high-grade lubricant on aircraft. Moreover, castor oil is an important industrial oil, not only used for aircraft lubricants, but also in the chemical, light industry, metallurgy, electromechanical, textile, printing and dyeing and other industrial fields, have particularly important uses. ”

"So, we can't determine who poisoned the castor beans based on the origin of the castor?" I took my nerve and let out a long sigh.

"It can't be said that although castor beans can be found everywhere, not everyone has the technology to refine ricin." Gong Haonan said the key to the case.

"In this way, the murderer is still a person who understands chemistry." Li Meng spoke slowly and said in a deep voice.

"Not only does he understand chemistry, but he also has a set of professional chemical equipment for refining ricin, and through this aspect, there are still traces to investigate the murderer."

In the criminal police team of the Renxi City Public Security Bureau, we discussed ricin, and then, I slowly opened my mouth and said to Gong Haonan: "Tell us the details of Agen, how did he die?" How did you find out? ”

Gong Haonan nodded, informed the criminal police officer in charge of the investigation around him, and told us about the entire investigation of this case: "A few days ago, we received a report from the masses that a man was found in the south of the city, with a suspicious appearance and a look like the wanted criminal Agen. However, we still don't know how Agen infiltrated Renxi City, and after receiving the report, we immediately launched an investigation and found Agen's traces through a surveillance on the street. When we locked down Agen's house and arrested him, we found him dead in his home. ”