This thing is too familiar to Durin, this is a needle sleeve for a medical syringe, and if there is a needle sleeve, it means that there will definitely be a syringe.

Du Lin carefully inspected the ground around him, and found that a corner of the carpet in front of Teng Peng's seat was warped, as if there was something inside, and Du Lin gestured to Wang Jieshu, who was recording on his mobile phone, to give a close-up here.

Durin gently uncovered the carpet, and in order not to destroy his fingerprints, he used two pens to extract a 5-milliliter syringe from the crack in the carpet, and there was still a little liquid left in the syringe.

Durin picked up the syringe, put it in front of his nose, and fanned it with his hand in the direction of his nose, smelling a fishy smell, very similar to the smell of snake venom.

Before Du Lin thought about it, the injury had deteriorated to this point in half an hour, either the snake had just finished hibernation, or it was the situation in front of him - the snake venom had been artificially purified!

Now that Teng Peng's suspicion of committing the crime has been basically determined, what is lacking is Teng Peng's own confession and his modus operandi. For example, if the injured person is poisoned by injection, how is the wound on the ankle that resembles a snake bite caused? How is the bathroom door locked inside, and how is it stuck with duct tape inside?

"Your name?"

"My name is Teng Peng. ”

"Why did you kill Zhao Yuan?"

"I didn't, I didn't do it. Teng Peng hurriedly waved his hand and flatly denied it, "Why should I harm Brother Zhao? Brother Zhao usually takes good care of me, and my teammates in the team know that I am often with Brother Zhao and have a good relationship, how can I harm him?"

"Really, he usually asks you to help him carry his bag and help him with his work, and you don't complain at all?"

"Hey, I'm young, it's normal to be a younger brother to help my brother do some work, and it's not a problem!"

"But I heard that you are behind Zhao Yuan's back, but it's not like this, the elder brother is long and the elder brother is short. ”

Teng Peng's face was a little embarrassed, "Well, sometimes I drink a little wine and complain, how can I take drunk words seriously?"

"Well, if you're talking drunk. Can you explain to me why this thing is in your bag?" Wang Jieshu put the syringe in front of Teng Peng with a needle.

Teng Peng was a little flustered, "How can it be in my bag, I have already thrown it ......" Halfway through his words, Teng Peng suddenly realized that he had leaked his mouth.

"No, no, I ...... I was wrong...... I was wrong, I haven't seen this thing, it's not mine!"

Wang Jieshu pointed to the mobile phone on the table, "You don't have to swallow back what you said, here is the whole audio and video recording, every word you just said will be accepted as legal evidence by the court during the trial."

In addition, even if you didn't say anything just now, we can also prove that you are the murderer of Zhao Yuan. Because I saw a few fingerprints on the syringe, as long as I compare it with your fingerprints, I don't think I need to tell you the result. ”

Teng Peng's face began to turn pale, his breathing became rapid, cold sweat flowed from his nose and sideburns, and the ten fingers of his two hands were tightly twisted together, looking very nervous and anxious.

Du Lin patted him on the shoulder and handed him a glass of water, "Little brother, there is no objection to your murder of Zhao Yuan, but I still have a few questions I want you to help me answer." ”

Teng Peng leaned back in the chair in frustration, with a sense of relief in the despair on his face.

"Okay, you ask. Now, I don't have much to hide. ”

"What caused that snake tooth mark on his ankle?"

Teng Peng took out an office nail remover from his trouser pocket, which is the kind of small tool that gently pinched, and the four points on the nail remover will remove the staple from the document material.

Teng Peng put the nail remover on his arm and pinched it gently.

Four red dents immediately appeared on his arm, the distance between the dents was exactly the same as the snakebite wound on the victim's ankle.

As you can imagine, if you pinch it hard, you will definitely get four bloody holes in the skin, which is indeed like a wound from the bite of a young venomous snake.

Durin nodded, "This problem is solved, there is another problem. After you got Zhao Yuan into the bathroom, how did you lock the bathroom door from the outside and put tape on the inside?"

Teng Peng thought for a while, "Oh, I can't tell you clearly, or I'll show you it." ”

After speaking, Teng Peng led Du Lin to the door of the bathroom in the front cabin, and Wang Jieshu followed behind with his mobile phone.

Teng Peng took out a small roll of wide tape from his coat pocket and tore off a palm-length strip.

Glue one half to the bathroom door frame, leaving the other half untouched, and then close the bathroom door halfway.

He took out a small piece of fishing line from his pocket, simply wrapped it around the switch handle on the inside of the door twice, then gently pulled the door shut, and pulled the line hard, only to hear a click inside, and the door was locked inside.

Teng Peng took out a small hair dryer-like thing from his coat pocket.

Wang Jieshu touched Teng Peng's body curiously, and said, "You kid belongs to Doraemon, right? ”

Teng Peng smiled awkwardly and didn't speak, turned on the thing that looked like a hair dryer, and said, "This is a portable vacuum dryer." ”

After speaking, he pressed the switch on the crack of the bathroom door, "It's vacuum mode now, as soon as I inhale here, the tape on the door frame on the other side of the door will be driven by the air flow to stick to the bathroom door." ”

Then he flipped another switch, "Now the vacuum cleaner mode has changed to hair dryer mode, and by heating the tape, the tape shrinks and deforms, and it is more sticky and sticks more firmly to the door." ”

Ten seconds later, Durin asked the stewardess to unlock the door with a key, and sure enough, the bathroom door and door frame had been glued together.

There was only one piece of tape, so it took a little effort to break the tape, but if you stick a few more tapes, I'm afraid it will be difficult to open the door again.

Durin brought Tengpeng back to his seat and said, "Tell me about your entire crime." ”

Teng Peng took a sip of water, "Anyway, I also committed a capital crime, what's the point of saying it, I just confess." ”

"That's not necessarily, that Zhao Yuan won't be able to die for a while. Dohrin said.

"Impossible, right? I used 20 times purified king cobra venom, the seller said that 1 ml could kill someone, I gave Zhao Yuan 5 ml, how could he not die?"

"Then you're being deceived, silly boy!" Du Lin pinched the syringe with a tissue pad, "I just looked at the liquid residue in this, judging from the taste, this is a snake venom, but it's not the venom of a king cobra, it's the snake venom of an ordinary cobra, and it's not 20 times purified, no more than 5 times at most, where did you buy it?"

"Small advertisement ...... for public toilets"