Chapter 484

Lin Dongxue asked, "where is she?"

"It's where we've been."

Lin Dongxue thought for a while and suddenly realized, "I seem to understand that Xiaoqin was missing on the night of August 3. On August 4, Zhang Xiao's" killing workshop "was accidentally found by his neighbor and reported to the police. It's impossible for him to be unpredicted. That is to say, he doesn't need to prepare another hiding place. One place can kill more than two people. Xiaoqin was just there before In the community. "

Xu Xiaodong said, "but we all went to the scene several times. There are no other victims. Isn't the one who has been separated dead for several days?"

"I don't remember that the living room was covered with newspapers, but it was very clean. I think it was used to kill Xiao Qin. Because it was found accidentally, the suspect had to take her away and leave the scene," Chen said

"We've seen the surveillance video over and over again, and the community has visited many times. If there are suspicious people coming in and out, it should not be missed," Lin said

"Go and have a look!"

The three drove to the community where someone called the police for the first time, and returned to the scene of the crime. Chen Shi recalled the situation of that day and said: "there were too many people under the unit building that day, and then the police came. It was difficult for the murderer to walk out with Xiao Qin. Did they go upstairs?"

"Or They rented other hiding places in this building. " Lin Dongxue said.

Chen Shi ponders and says, "Xiaodong, go and call the property."

Xu Xiaodong came to the property. The property owner's list showed that the owners didn't live here. The house was rented to outsiders. Several people knocked at the door one by one, each door was very nervous.

As it turns out, the tenants in this building have no suspects.

Finally, they came to the top floor. Chen Shi pointed to the rooftop door with the iron chain and asked the property, "is it possible to go to other units from the rooftop?"

"The property said:" it is open, but the roof door of each floor is locked from the inside. Like this door, it can't be opened from the outside

"Do you have a key?"

"Yes!"

"Open."

Several people opened the roof door and came to the roof. There were many air-conditioning ventilators and solar water heaters on the roof. In addition, there were several round bucket water tanks. Chen Shi went to the side of the water tank and climbed up the ladder. The property said, "no, how can people be hidden in the water tank and locked?"

"What flavor?" Lin Dongxue sniffs around.

When I smell it carefully, there is a strange smell in the air. It comes out from the crack of the water tank. It's not a bad smell, it's more like the smell of a chemical agent.

Chen Shi felt a little dizzy and suddenly said, "hurry up, this smell may be toxic!"

Everyone rushed to the air inlet. Chen Shi thought it was very dangerous. There was a slight bitter almond in the smell just now. It was likely to be cyanide. Looking at the locked water tank, he thought there must be something in it.

"Call Lao Peng!" Chen Shi said.

After a while, several police cars came in. Peng sijue sent several technical police to put on protective clothing and go to the roof. He opened the water tank. Then the radio heard the sound of the scene: "Captain Peng, there are bodies in the water tank, for two people."

"What!?" Lin Dongxue is shocked.

"Describe it." Peng sijue said.

"A man and a woman, the woman is below, the man is above, and they are all soaked in waist deep water The color of the body seems to be poisoning. It smells so bad inside. You can smell it through the gas mask. "

"Be careful. Don't touch the water inside first. Keep the air ventilated and let the smell disperse first."

Three hours later, the body was fished out and placed on the roof. Surprisingly, one was Xiao Qin and the other was Zhang Xiao, the suspect the police had been looking for.

The poison in the water should be cyanohydric acid, which is a highly toxic gas produced by the interaction between hydrochloric acid and cyanide. As long as a small mouth is inhaled, it will be fatal. The structure of the water tank is sealed. Even so, Chen Shi feels a little dizzy just after he hears from the water tank.

Peng sijue said uneasily, "you are so lucky. Do you want to go to the hospital for examination?"

Chen Shi waved his hand. "It's OK. I'm going to die early. At most, I'll eat more almonds. It's OK."

The two checked the bodies, and their signs of death were very close. They should have died at the same time. We can guess the time of death. It must be around the evening of August 4.

Xiao Qin's clothes were thin, and his hands and feet were tightly bound by nylon rope, which made his hands and feet all changed color, and the skin of the binding area exploded, which made him miserable.

According to the police who found the body, Xiao Qin fell face up to the bottom of the water, Zhang Xiao pressed her horizontally, his arm was pressed under Xiao Qin's body, which seemed to fall together.

When Zhang Xiao's body was turned over for examination, there was no injury to his back, and no one could see if he had been pushed.

Chen Shi looked at the body and asked, "does Zhang Xiao smoke?"

"Maybe he smokes," said Peng sijue. "There are many cigarette butts found at the scene of the next corpse. He should have smoked them."

Chen Shi speculated: "then he should not have a good sense of smell. Cyanohydric acid has a slight taste of bitter almond, but many people can't smell it. Inhalation of it is instantly fatal. I think the murderer poured cyanide and acid into the bucket in advance, covered the lid, and Zhang Xiaoben intended to deal with Xiaoqin. When he opened the lid, he inhaled the deadly gas and fell down with Xiaoqin. "

"But when we came, the water tank was locked," Lin Dongxue said

"Yeah? Laopeng, is the diffusion speed of cyanohydric acid fast? "

"This gas is lighter than air and diffuses faster."

"How long will it take to diffuse?"

"It has to be tested."

"It seems that the killer locked the water tank before the cyanohydrogen acid completely diffused. He must have worn a gas mask and ambushed nearby By the way, it's very likely that he called Zhang Xiao to deal with Xiao Qin and set up a fatal trap in advance. This man is Zhang Xiao's accomplice. He came to a perfect dismounting and killing donkey, killed Zhang Xiao without any trace, and then transferred the money. "

Lin Dongxue said: "I suspect that he was also responsible for the blockage of the sewer. The purpose is to force Zhang Xiao to run and lose his judgment."

Chen Shi nodded, "this guy is really smart. If we didn't find the body in the water tank, we might still be looking for Zhang Xiao everywhere, thinking that he has run away. Now Zhang Xiao is dead, and the clue is broken, but he takes the money and hides in peace."

Xu Xiaodong said: "the bank monitor didn't capture this to withdraw money at the ATM?"

Lin Dongxue said: "the monitoring didn't get a face at all. It's too hard to catch people by this Alas, after a round of investigation, the last clue is broken again. It's too boring! "