After consulting with the chemistry teacher, I finally figured out the phenomenon of phosphine combustion, and immediately went back to explain the situation to the captain......

"Boss, if the clothes of the deceased contain a large amount of phosphine, it is theoretically possible that it will burn in a large area within 20 seconds of contact with the air. So we can't be sure how long the deceased appeared in the hallway and then started burning. Another point is that if phosphine is mixed with dry ice, the ignition point of phosphine in the air can be delayed, so that the gas produced by the volatilization of dry ice in the air can be released. However, the blending ratio of phosphine and dry ice is very professional, and ordinary people will not mix it at all. "When I got back to the police station, I told the captain about both situations.

After listening to my words, the captain thought for a moment and said, "Then say that both scenarios are possible?" But the first scenario seems a bit far-fetched. ”

After listening to the captain's words, I also nodded and said, "Yes, the first scenario may not be realistic, after all, the time is too short. So the second scenario should be the most realistic, the murderer is likely to have done something on the deceased's clothes when he was drinking with the deceased. After the deceased drunk and drunk, he picked up his coat and left, and the time planned by the murderer was also very accurate, the deceased just left him, and the fire spontaneously combusted, as if the human body spontaneously combusted. ”

After listening to my analysis, the captain was silent for a while and then called Xiao Su and asked her to check the chemistry teacher in the school, hoping to find some clues from it......

When he was about to get off work, Xiao Su also rushed back from the school. It's a pity that her investigation doesn't have any clues of too much value......

After Xiao Su entered the door, he said to the captain: "Boss, there is a pharmaceutical academy there, almost everyone knows some chemical knowledge, and there are no personnel who can focus on investigation." ”

After listening to Xiao Su's words, the captain looked at me......

I listened to Xiao Su's words, then thought about it and said: "Let's check the relationship between the deceased at school, I think the murderer planned this murder in the school, which means that there must be some secret between the two people that we don't know." ”

"Alright, you two don't stop here. Then go to the school to check, and now there are no clues at all, so you two can work overtime. "After listening to my words, the captain immediately made such an unreasonable arrangement.

Xiao Su looked angry, pulled me and turned around and left the police station, and drove to the school where the incident occurred again......

When Xiao Su and I arrived at the school again, it was already evening, and there were young couples in pairs on the school's campus and in the garden......

Xiao Su looked at these students and couldn't help but sigh with emotion: "Alas, when I was in college, I wanted to fall in love. However, if you don't fall in love in college, you will regret it for a while, and if you fall in love, you will regret it for the rest of your life. ”

After listening to Xiao Su's words, I said with a serious face: "Don't worry, I didn't talk about it in college, and I'm still perfect." ”

"Get out." After Xiao Su scolded me, the two of us went to visit some of the deceased's students and school teachers, school workers and other personnel......

"It's perfect, excellent teachers. He is the most popular among students and is very popular with his classmates. In private, he is also helpful, and the family is quite harmonious, and he has not behaved excessively with other women. In addition to loving to drink, there are basically no shortcomings, but he drinks and drinks, and has never been immoral or misguided after drinking. "After Xiao Su learned some of the deeds of the deceased, he muttered to me.

At this time, we were eating in the school cafeteria.

As I ate, I replied, "On the surface, that's what it is. But there must still be some reason, otherwise why would people kill him? On the day of the incident, he had no classes, and he usually liked to drink a little wine, and the school leaders turned a blind eye. Therefore, the school did not have a specific record of his appearance that day, which was difficult to do. ”

Xiao Su listened to my words, nodded and said, "What then?" ”

I hurriedly took a few mouthfuls of food into my mouth, and after eating, I said: "Go to the scene of the crime again, I think if the murderer and the deceased were drinking on the floor where the crime occurred, there must be clues." ”

After speaking, I took Xiao Su to the scene......

When we got to the floor where the crime occurred, we began to go in one room after another to inspect it......

"This room is locked, the teaching aids showroom." Xiao Su pointed to the door of a room and said to me.

When I heard this, I quickly found a wire to open the door......

"Nothing special." Xiao Su said after entering the house.

I also carefully observed the environment in the house, looked at it and said, "Yes, this is where the two of you drink." ”

After I finished speaking, Xiao Su took a closer look at the environment in the room, except for some teaching aids, there was no special place at all......

Seeing Xiao Su's puzzled face, I pointed to the desk in the room and said, "There are a few drops of oil stains on the table, it looks like new." The murderer simply cleaned up the food and drinks without wiping the table. ”

After I finished speaking, I carefully checked around the table......

Finally, I found a few peanuts under the table......

After thinking about it, I said to Xiao Su: "This is obviously someone who drank here and accidentally dropped it here when he was packing his things." You immediately go and find out who was using this house at the time of the crime. ”

After listening to my words, Xiao Su immediately went to check the matters I explained. I, on the other hand, found the type of dry ice for cleaning in a corner of the room......

Soon, according to the school's records, Xiao Su found the person in the room of the teaching aid showroom at the time of the crime, and we directly notified the captain to arrest this person......

After returning to the police station, Xiao Su immediately interrogated the suspect......

It didn't take long for Xiao Su to come out of the interrogation room and say to me: "Admit it, he admitted that he designed to invite the deceased to drink, and then after the deceased was drunk, he sprayed the deceased's coat with a mixture of phosphine and dry ice that had been mixed beforehand." He calculated the time accurately, and shortly after the deceased left, the dry ice was almost evaporated, and the phosphine burned. ”

After listening to Xiao Su's words, I asked a little puzzled: "The deceased has an excellent reputation and popularity, why did the murderer kill him?" Is there any holiday between the two? ”

Xiao Su pursed his lips at this time and said: "There is no festival, it is just to compete for the title of individual advanced at the provincial level." Both of them are two teachers with relatively high voices pointed out by the school this time, but the deceased seems to be more popular than the murderer, and the murderer is afraid of losing this evaluation, so he designed a trick of spontaneous combustion of the human body. However, he said that he didn't want to kill the victim, he just wanted to burn him and hospitalize him, but he didn't expect the fire to be so big that he burned people to death. ”

After listening to Xiao Su's words, I nodded, feeling that this matter was a little too much beyond my expectations. For a job title, he actually killed a person......

In fact, in the workplace, competition is inevitable. People in the workplace are like a group of monkeys climbing a tree, you look up all the butts, look down all the smiling faces, look left and right and you will see a group of grinning faces but waving their teeth and claws at you. Therefore, competition in the workplace cannot be said to be defensive for everyone, but it may be the one you are not prepared against, and will often attack you unexpectedly......

(End of chapter)