Chapter 1,712: Murdering Techniques

Chapter 1711 Murdering Techniques

Immediately, Lin Yi arrived at her bedroom again.

The bed was messy, with scratches on it, and the cosmetics on the dressing table were scattered all over the floor, but they didn't look like signs of a fight, more like signs of a struggle.

After looking around, he didn't find anything suspicious in Du Juan's house. Then he returned to the living room and met Li Xianghui and Gu Yiran.

"Did you find anything special at the scene?"

"Found these four things?"

"Pinhole camera?"

Li Xianghui nodded, "It's very hidden. It's spread across two bedrooms, the bathroom and the kitchen. It's monitored 360 degrees, without any blind spots."

"Du Juan shouldn't know about this, right?"

"That's the guess, but what exactly happened needs to be analyzed. We can't draw any conclusions now."

"The bodies have been taken out. Are there any preliminary results? Can it be confirmed that it was suicide?"

"Except for these four cameras, no useful clues have been found, but it doesn't look like suicide." Li Xianghui pointed to the kitchen with his chin.

"Come with me."

The two came to the kitchen, and Lin Yi took a look at the position of the stove.

The switch is closed.

According to common sense, if it was suicide, the gas switch should be on, and turning it off would be wrong.

"That's not the point, look at this."

Li Xianghui pointed to the gas pipe:

"There is a corroded hole here, but after inspection, it was found that there were traces of human damage. It is basically certain that it was a homicide. However, there are no clues at the scene, so it is difficult to trace the murderer."

Lin Yi took a deep breath.

Song Deyuan's problem has not been solved yet, and now another secret room murder case has appeared.

This case is getting more and more interesting!

While the two were talking, a forensic doctor came over.

"Team Li, the results are out. The deceased Du Juan died of poisoning due to excessive carbon monoxide intake while he was sleeping. There are no scars on his body or signs of being violated. It can be determined that he had no contact with anyone during his lifetime. There was a fight, it was a typical locked room murder case."

"I would like to ask, if a person takes an overdose of carbon monoxide while sleeping, won't he be awakened by choking?"

"This possibility exists, but it depends on the situation. The leaked carbon monoxide content was not large. When she reacted, her body functions were affected, and it was very difficult to deal with it effectively."

"And her bed was very messy, and there were wrinkles in many places on the bed. She probably struggled for a period of time after being poisoned, but it didn't have any effect."

"Okay, I understand, thank you."

After reporting the situation of the deceased, the forensic doctor turned and left. Lin Yi and the other three gathered together and began to analyze the case.

"Is there surveillance around here? Have you photographed anyone suspicious?"

Gu Yiran shrugged, "This is an old community, and the surveillance cameras are all for decoration. None of them are easy to use."

"That's a bit strange." Lin Yi said:

"After leaving the police station, our people have been following him secretly. When did the murderer go in and destroy the gas pipeline?"

"I have asked the people responsible for guarding Dujuan, and they were able to determine that Dujuan did not come out after entering the door, and no one entered her home."

Lin Yi's question, as well as other people's questions, didn't really want to understand what was going on.

Now the question has reached a deadlock again, how did the murderer come in and kill?

"Is it possible that the murderer came in early to achieve his murderous purpose?"

"There is only one possibility now. They live on the sixth floor and are unlikely to come in from the outside window. This way they can be easily discovered." Lin Yi said:

"But the problem is that the gas leak is in the pipeline. There is no switch in that place. Once the leak occurs, it will be continuous. After Du Juan comes back, he will definitely find something wrong, and it will be impossible to sleep. This is contradictory."

The question raised by Lin Yi is also the key point of this secret room murder case.

How did the murderer control the gas in the pipes?

If this could be solved, the murderer's modus operandi would become clear.

Lin Yi came to the kitchen and saw the damaged gas pipe.

Then he went up and touched it carefully.

There were tiny barbs in the damaged areas, which were obviously man-made.

Lin Yi looked at it carefully for a long time, but still couldn't figure it out.

There is no one inside, but the other person can control the opening of the hole.

How is it done?

"Um?"

Just when Lin Yi was thinking about the problem, he noticed something was wrong.

Next to the hole, he saw a black substance smaller than a sesame seed, which did not seem to be rust.

"Brother Li, do you have any tweezers to help me find one?" Lin Yi said.

"Did you find anything?"

"There's something strange on the pipe. I'm going to get it down and take a look."

"You wait a moment."

Li Xianghui walked to the forensic doctor, asked for a small forceps, and handed it to Lin Yi.

Lin Yi took another piece of facial tissue, and then carefully took off the small speck of black substance.

"What is this?" Gu Yiran looked over and asked.

Lin Yi shook his head, stared at the small black substance and said:

"Not sure yet, I took it from around the hole."

"But it seems to be somewhat sticky. I just saw it sticking to the tweezers."

"viscosity?!"

Lin Yi suddenly realized and hurried to the window. His eyes suddenly widened because he saw what he wanted to see!

Although Du Juan is beautiful, she is not virtuous, which can be seen from the furnishings in her home.

In other words, UU reading www.uukｎｓ. net There are not many virtuous women who can be lovers for others.

Therefore, the window sills in their home are not clean, especially around the plastic steel windows, which are covered with dust.

But there is a white line in it, which divides the dust on the plastic steel window into two parts.

At the same time, Li Xianghui and Gu Yiran also came over.

"What did you find?"

Lin Yi pointed to the white mark on the edge of the window.

"I understand the murderer's modus operandi."

Neither of them spoke, waiting for Lin Yi to continue.

"The murderer quietly came to their house before Du Juan came back, and then secretly made a small hole in it, and sealed it with tape as quickly as possible so that the pipe would not leak in a short time."

"Then, how did he take off the tape?"

"Fishing line!"

"The murderer is outside. He uses a fishing line to connect the tape at one end of the pipe. When the time is right, he can pull the fishing line outside and the tape can be easily pulled off, and the gas inside will naturally leak out."

"I understand!" Li Xianghui said:

"The white marks by the window should be the marks made by the fishing line!"