Police Detective

Bai Song pondered for a long time, and he understood, "The '12·01' task force, in these short ten days, has already begun the work of closing the network. At this time, the task force is very taboo about extraneous matters.

After staying here all morning, Bai Song also had some analysis of the case. At this time, the cause of death of the deceased also had preliminary laboratory results, and he died of hydrogen cyanide poisoning.

Cyanide is a well-known poisonous substance. Basically, if you eat anything with the word "cyanide" on it, you won't die if you eat it.

Hydrogen cyanide, unlike common sodium cyanide and potassium cyanide, is a colorless and transparent liquid. Using substances such as potassium cyanide, hydrogen cyanide gas can be produced by reacting with acids.

The hydrogen cyanide liquid itself is easily volatile and has the taste of bitter almonds. When there is more than 0.003 grams of hydrogen cyanide gas per cubic meter of room, there is a risk of death to the human body. Theoretically, a Coke bottle filled with hydrogen cyanide liquid is enough to kill 1,200 people.

The cyanide ions of hydrogen cyanide can significantly reduce the activity of more than 40 enzymes in the human body, quickly combine with the ferric iron in oxidative cytochrome oxidase, prevent it from being reduced to divalent iron, and interrupt the oxidation process of transferring electrons. , tissue cells cannot use oxygen in the blood, causing internal asphyxia.

Since the central nervous system is most sensitive to hypoxia, the brain is damaged first, leading to central respiratory failure and death.

If you inhale a high concentration of hydrogen cyanide or swallow a large amount of cyanide in a short period of time, you will stop breathing and die within two to three minutes.

No cyanide was found at the scene. Since the door of the house was wide open, there was no cyanide residue in the gas inside the house. The police who arrived at the scene for the first time did not smell the so-called bitter almond smell.

Bai Song was not the police officer in charge of the case. He had been thinking about one thing all morning.

If the level of forensic medicine in the Municipal Bureau is really high, then on what basis is it concluded that "there is a possibility of suicide"?

Professionals are different. Bai Song deeply understands what it means to specialize in a profession. He will never look down on these professionals, but there is really not much overlap between them, and Bai Song can't go there. ask.

After returning to the institute, Bai Song and Feng Bao chatted for a while. Feng Bao helped Bai Song clear up some of his doubts. Experts from many large units generally leave room for words when speaking, and may leave a few words for unclear scenes. . Feng Bao's point of view and Bai Song also thought it was possible, but the case had already been committed and the investigation still had to continue.

In the afternoon, Master Sun Tang found Bai Song.

"I just heard that the task force you want to go to will be recruiting people soon. Have you signed up?" Sun Tang asked.

"No, I've learned about it. The case has begun to be finalized, so I won't sign up." Bai Song shook his head, thinking that Li Han was really well-informed.

"Finished? Then don't go, it's boring." Sun Tang nodded.

"Master, tell me, why are we recruiting people when the case is about to be closed?" Bai Song didn't understand.

"Actually, it's not difficult to solve the case, it's not difficult to arrest people, and it's not even difficult to detain people. The most difficult part of the case is the follow-up work." Sun Tang pointed to a few volumes on the desk in the team: "Let's do it together. For a large-scale telecom fraud case, dozens of people will be arrested at once, and the later work will be very, very busy, which will take several months. The case files can be piled on three or four desks, and each volume is so thick." Sun Tang pointed with his fingers. I gestured and found that it was about five or six centimeters.

Bai Song nodded to express his understanding. He had seen how thick the file was on Wang Qianyi's previous case involving illegal trading of wild animals. A large-scale fraud case, the follow-up work is actually the bulk of it.

"Well, I'd better not go. You can learn the business of handling cases in the office." Bai Song understood.

"I asked you to come over. There is one more thing. Did Wei Suo ask you for help yesterday?"

"Well, I went with Suo Wei on a case where our team was involved in stealing electric bicycle batteries. I cooperated with Suo Wei and caught two thieves."

"For a young man like you, living in a dormitory, there must be some leaders who would like to ask you to work overtime. This kind of thing is quite dangerous. I know you fairly well. One thing, you won't refuse, and two, you will definitely still do it. Rush in front, you can't even wear a gun now, it's really unsafe." Sun Tang pointed to the southeast: "My child's grandfather has now moved to live with me. Grandpa also has a small house there, which is about It's about 50 square meters, and it's been vacant for three years. It's on the sixth floor, and you can't rent it out for much money. I've never been too lazy to get it. If you don't mind it, get some new mattresses and quilts, and you can just move in. I'll hire a housekeeping company to clean it up for you later."

"Ah? No, no, no, master, why are you so embarrassed? I'm doing well in the workplace. Wei Suo is actually training me." Bai Song scratched his head.

"Just think about it yourself. Just think about it." After Sun Tang said this, he continued: "Don't mention this matter anymore. You can think about it yourself later. I am too lazy to deal with my house." Rent, you decide for yourself. Another thing is about today’s murder case. Why do I think you are very interested? "

"Yeah!" Bai Song didn't hide his emotions.

"Well, okay, young people, that's how it should be. If you try to cope with everything and live alone, you won't get anywhere." Sun Tang took out his notebook: "There was just a meeting in the office. , this case is the main investigation of the Second Criminal Investigation Team, and the institute should not have to deal with this matter, but Sun Institute and Li Jiao both said that they would investigate the case strictly. After all, such premeditated and professional murder cases are rare. , it also happened in our jurisdiction, Sun Suo’s face will definitely be disgraced.

The office plans to set up a case-handling team. One person will be selected from each team, and then the team will be led by Wei Suo and Xiao Wang, a total of six people. The people selected from each group will not leave their original teams and will continue to work as usual, but they will not be assigned to night shifts. They will sleep as usual on the nights when they are on duty and do not need to get up unless there is something special. Therefore, they will not have to make up for the rest the next day and will continue to work.

This job requires a certain degree of enthusiasm, and the family pressure should not be too great. Originally, I wanted to arrange Feng Bao in our group, but his child is still sick at the age of two, so I thought of recommending you and came to ask you if you want to participate. , I will report it to you. "

"Think about it, master, I have no problem. I can still be on duty at night as usual. I'm also interested in the case." Bai Song looked a little excited.

"Haha, okay, you are young, so you are good." Sun Tang thought for a while: "That's not right. Few other young people have your drive. Okay, then I will report it to you. If this matter can be given to you, It’s done, but it’s a shameful thing for the institute, Sun Institute, and Li Jiao.”