Bai Song pondered for a long time, and he understood, "The '12.01' task force is about to enter the net collection work in this short ten days.

After spending the morning here, Bai Song also had some analysis of the case. At this time, the cause of death of the deceased also had preliminary test results, hydrogen cyanide poisoning death.

Cyanide is a well-known toxic substance, basically stained with the word "cyanide", and few people will not die if they eat it.

Hydrogen cyanide, unlike the 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, on the other hand, is easily volatile and has the taste of bitter almonds. When more than 0.003 grams of hydrogen cyanide gas are present in every cubic meter of room, there is a risk of death to the human body. Theoretically, a Coke bottle, if filled with hydrogen cyanide liquid, is enough to kill 1,200 people.

The cyanide ion of hydrogen cyanide can greatly reduce the activity of more than 40 kinds of enzymes in the human body, quickly combine with the trivalent iron in the oxidized cytochrome oxidase, prevent it from being reduced to ferric, interrupt the oxidation process of electron transfer, and tissue cells can not use the oxygen in the blood to cause internal asphyxiation.

Because the central nervous system is most sensitive to hypoxia, the brain is the first to be damaged, 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 or three minutes.

No cyanide was found at the scene, and because the door was wide open, there was no cyanide residue in the gas, and the police who arrived at the scene did not smell the so-called bitter almond smell.

Bai Song is not the police officer in charge of the case, he has been thinking about one thing all morning.

If the level of forensic medicine in the city bureau is really high, then on what basis did it lead to the conclusion that "there is a possibility of suicide"?

Professional is different, Bai Song deeply understands what it means to specialize in the art industry, he will never look down on these professionals, but the intersection between everyone is really not big, and Bai Song can't ask.

After returning to the office, Bai Song and Feng Bao chatted for a while, Feng Bao solved a little doubt for Bai Song, many experts in large units, people generally leave room for talking, and leave a few more words for the scene that cannot be seen. Feng Bao's point of view, Bai Song also thinks that it is possible, but the case has already been reported, and it is still necessary to continue the investigation.

In the afternoon, the master Sun Tang found Bai Song.

"I just heard that the task force you want to go to is going to recruit people recently, have you signed up?" asked Sun Tang.

"No, I understood, the case is starting to close, and I won't sign up. Bai Song shook his head, and said in his heart that this Li Han is really well-informed.

"It's over? Don't go, it's boring to go. Sun Tang nodded.

"Master, you say, why is the case going to be closed, but you have to recruit people?" Bai Song didn't understand.

"In fact, it is not difficult to solve the case, it is not difficult to arrest people, and it is not even difficult to say that criminal detention is not difficult, and the most difficult part of the case is the follow-up work. Sun Tang pointed to a few volumes on the desk in the group: "A large-scale telecommunications fraud case, there are dozens of people when they are caught, and there will be a lot of work in the later stage, and they will not be busy for several months. Sun Tang gestured with his fingers, and it looked like five or six centimeters.

Bai Song nodded and said that he understood, he had seen Wang Qianyi's case of suspected illegal trade in wild animals before, how thick the case file was. A large-scale fraud case, then the follow-up work is actually a big head.

"Well, I'm still not going, and I can learn the business of handling cases in the office. Bai Song said he understood.

"I called you over, there is another matter, did Wei Suo ask you for help yesterday?"

"Well, I followed Wei Suo for a trip, that is, the case of stealing electric bicycle batteries in our group, and I followed to cooperate with Wei Suo to catch two thieves. “

"A young man like you, living in the institute, there must be some leaders who like to ask you to work overtime, this kind of thing is still more dangerous, I still know you, you won't refuse this kind of thing, two, you must still rush to the front, you can't even wear a gun now, it's really unsafe. Sun Tang pointed to the southeast direction: "My child's grandfather, now he has moved to live with me, grandpa, there is also a small house, about 50 square meters, which has been idle for three years, it is a sixth floor, and it can't be rented out much, and I have never been too lazy to get it." If you don't like it, you can get some new mattresses and quilts, and you can move in. I'll hire a housekeeping company to clean up the whole thing for you. “

"No, no, master, what's so embarrassing? I'm doing well in the unit. Wei Suo, he is actually exercising and training me. Bai Song scratched his head.

"You can just look at it yourself, and think about it yourself. After Sun Tang finished talking about this, he continued: "Don't mention this matter, you can go back and think about it yourself, I don't bother to rent my house, you decide for yourself." There is another thing, which is the murder case today, how do I think you are very interested?"

"Eun!" Bai Song made no secret of his emotions.

"Well, okay, young man, it should be like this, if you want to spend everything properly, and you are alone, there will be no use. Sun Tang took out his notebook: "There was a meeting in the institute just now, this case is the chief investigator of the second criminal investigation team, and it stands to reason that the institute doesn't need to worry about this matter, but our Sun Institute and Li Jiao both said that they would strictly investigate this case, after all, this kind of premeditated and more professional homicide case is rare, and it still happens in our jurisdiction, and Sun Suo's face must be gloomy."

The institute plans to set up a case-handling team, and the members of the case-handling team will draw one person from each group, and then the team will be led by Wei and Xiao Wang, a total of six people. The people drawn in each group do not leave the original team and follow the duty as usual, but the night shift is not arranged, and they sleep as usual at night on duty, and they don't have to get up if they have no special things, so they don't have to make up for the rest the next day, and they have to continue to follow the work.

This job requires a certain amount of enthusiasm, and the family pressure is not too big, our group originally wanted to arrange Feng Bao, but his child is now two years old and always sick, so I want to recommend you, come to you and ask, if you want to participate, I will report it to you. “

"I think, master, I have no problem, I can follow the duty as usual at night, and I am also interested in the case. Bai Song's expression was a little excited.

"Haha, good, you, young, just good. Sun Tang thought for a while: "It's not right, few other young people have the same enthusiasm as you, okay, then I'll report it to you, if this thing can be done, but it will be a matter of giving the institute, Sun Suo, and Li Jiaodu a long face." “