Shen Cheng walked to the window and shouted to the criminal police downstairs, and Shen Cheng asked the criminal police to find the person in charge of gas delivery in the nearby area. For the sake of convenience, the same gas sales unit is generally responsible for the exchange of an area, so as long as you check, it is easy to find the person in charge of supplying the gas.

Accidents and suicides are not within the scope of Shen Cheng and I, if he kills, the gas canister will explode, and it is absolutely the murderer who has done something on the gas canister, and the person who is most likely to come into contact with the gas canister is the person responsible for replacing the gas. The gas canister should have been passive after the day of Luo Danan's death, because that was the last time Chen Zhaodi cooked except for today.

The gas canister was left untouched, and when it was fired, it would ignite and explode, but until then, the family of three was safe.

"I don't think the murderer committed a crime in order to kill people." I stood up from the ground and said to Shen Cheng.

Shen Cheng turned his head: "Why?" ”

Me: "If the murderer has the ability to use his hands and feet on the gas canister and cause an explosion, why don't he kill all three members of this family in one go, but kill Luo Danan first, and then kill Chen Zhaodi?" ”

Shen Cheng explained: "Because killing Luo Danan requires Chen Zhaodi's cooperation. ”

I retorted: "If you do this too much and blow them all up in one go, you naturally don't have to worry about leaking secrets from the same party." ”

Shen Cheng refused to back down at all: "The family of three is all at home, and it is very difficult to use their hands and feet on the gas canister." ”

Me: "It's not difficult, there are always times when the three deceased are not at home, and sneaking into the house at any time to do something is much easier than committing two crimes in a row, and the murderer has no need to take any risks." "It's a very remote place, it's hard to be found by anyone sneaking in, and the house is ruined, so we can't find evidence of whether someone has sneaked in.

According to my inference, the murderer only entered the house after Luo Danan's death, and Shen Cheng and I analyzed that the murderer was restless after committing the crime, and if he wanted to kill people, he should not sneak into the deceased's home, because he didn't know if the police were waiting for him here.

Dashi's murder shows the murderer's meticulousness, and he is very good at calculating, so it is impossible not to calculate that two crimes will greatly increase his chances of being exposed.

"The murderer only wanted to kill Luo Danan at the beginning, and he didn't want to harm others, and now he is creating the explosion because he is afraid that the crime will be exposed." Shen Cheng said.

Shen Cheng and I argued for a long time, but no one persuaded anyone. After a while, the criminal police downstairs shouted Shen Cheng, and the person in charge of changing the gas canister was taken. It was a dark-skinned man, he was very strong, and he looked a little nervous in the face of me and Shen Cheng.

Shen Cheng: "You are also responsible for replacing this gas canister?" ”

The man nodded: "I am in charge of all this place." The man's voice was very small, and he hesitated: "The police informed that there is no quality problem with our gas tanks, if you don't believe it, you can check it, and I have been doing this for more than ten years, and the gas tanks of every household here are responsible for unloading and then installing them, I dare to guarantee that there is absolutely no safety problem!" ”

The man was afraid that we would put the blame on him, and he tried his best to explain it to us. He also waved at the surrounding residents, and soon, many residents responded, and after using the gas, there were no problems in every household. Moreover, all the inhabitants knew this man, and everyone called him a very good man, and he always carried the heavy gas canister up and down himself.

I asked, "When will the gas be replaced?" ”

The man thought carefully for a moment, and then he said he couldn't remember the exact time, but it was about a week ago. He remembered that on the day of the gas change, he received two phone calls, one from Luo Danan and the other from Luo Danan's neighbor, and the two families just ran out of gas, so he sent them together.

The criminal police immediately confirmed with Luo Danan's neighbors, and sure enough, it was indeed true.

The man was just a very ordinary person, with no motive for murder, and an alibi, and after Shen Cheng asked, he quickly let him go.

After that, we asked the residents of the neighborhood if they had noticed any suspicious people wandering around the neighborhood in recent times, and everyone talked to each other, but in the end we couldn't get the answer we wanted to hear.

A new case has been filed, but no clues have been found from the eyewitnesses. Shen Cheng always thought that the murderer wanted to kill people and kill people, but I didn't think so, if the murderer really wanted to kill people and kill people, how could he choose such an irregular killing method. Assuming that Chen Zhaodi is an accomplice, the murderer has no way to confirm whether Chen Zhaodi had confessed to him when the explosion occurred.

Moreover, the murderer had no way to control the time of the explosion, a person had just died, and Chen Zhaodi did not have to cook at home, that is, the murderer had no way to control the time of Chen Zhaodi's death. Do murderers who are good at physics and calculations really have to rely on chance and luck to kill people, obviously not.

Slowly, the criminal police dispersed, and it became dark, and when the last criminal police officer in a police uniform withdrew from the scene, before the ruins, only Shen Cheng and I were left. Shen Cheng looked down at the house that had been hit by the fire, and looking at his tall back, I felt lonely.

Today's weather is unusually hot, and even in the evening, the temperature hasn't dropped much.

I don't know how long Shen Cheng stood there, when he turned around, the bright moon was in the sky, the white moonlight illuminated his face, he was expressionless, but I had a strange illusion. I feel like Shen Cheng has come out of this ruin, but if I think about it carefully, isn't Shen Cheng the one who came out of a fire.

Shen Cheng's mood was not very good, he stopped talking to me and got into the car first.

The car sped away, and when he and Shen Cheng arrived at the police station, Shen Cheng returned to normal. Another homicide happened, and everyone in the police station was working overtime. In the interrogation room, many witnesses and residents of the area are being questioned. After Shen Cheng and I got closer, we heard the scene of the explosion clearly.

Because there were several police cars parked near Chen Zhaodi and Luo Danan's house, several residents stood together to discuss. Everyone already knew that Luo Danan died tragically, and they were standing opposite Luo Danan's house at that time, across the street, and everyone saw Chen Zhaodi cooking through the window.

"At that time, we still said that Zhao Brother was pitiful, but before she finished speaking, her house exploded!" Speaking of the explosion, everyone still seemed a little afraid. The resident who spoke still had a wound on his face, which was cut by the small rubble brought up by the explosion: "Although I don't like their family, think about it, all three members of the family are dead...... Hey......"

The resident sighed.

"Don't like them?" Shen Cheng interjected.

The criminal policeman who was asking immediately got up and made room for me and Shen Cheng. After sitting down, the resident spoke to us in more detail.

Luo Danan and Chen Zhaodi were notoriously greedy in that area, and every time they went to someone else's house, they always had to take something with a dead face. It is no exaggeration to say that the monosodium glutamate and salt used in Luo Danan's house are all scavenged from every household, so in everyone's impression, greed for small and cheap is the symbol of this family.

Many residents should get along, everyone said that, and I naturally remembered Chen Zhaodi's greedy appearance.

"Is there any stealing?" Shen Cheng asked.

"That's not true, they're just greedy, but they're not going to come to our house to steal." Residents replied.

"Is there anyone who particularly hates or has a grudge against their family? For example, because of their greed for small gains. I took over and asked.

Several residents thought for a long time, but still shook their heads: "No, everyone doesn't like their family, so they have been deliberately avoiding them recently, and no one has quarreled with them." ”

"Also, tell me everything you know about this family." Shen Cheng turned the pen in his hand and said.

At our urging, everyone talked about the situation of this family of three, and in order to investigate in detail, we even asked them to tell what this family has been doing every day for nearly half a month.

Finally, the words of a resident caught the attention of Shen Cheng and me......