Wang Defa originally thought that he was a very smart person who would take all aspects into account when doing things, but after all, he met Gu Chen, a probationary police officer with Citroen on his epaulette.

He thought that Gu Chen's opinion was not enough to convict, after all, it was just speculation, not evidence at all.

But Gu Chen's confident eyes seemed to be sharper than his dominance in the mall.

It's like two master negotiators, who want to conduct a business negotiation, but at the beginning, their momentum is firmly suppressed by the other party.

No matter how much you pretend to be strong, the other person seems to be able to read your mind.

Wang De found that he was facing such a top master, and Gu Chen's self-confidence seemed to stem from the fact that he had evidence in his hands that was absolutely unfavorable to him.

"What the hell are you trying to say? I'm too busy to speculate with you here. Wang Defa took out his mobile phone.

This is also done in order to divert one's own weakness.

Gu Chen learned Officer Wang's posture and slammed the table, startling everyone, including Officer Wang.

"Wang Defa, so far, I advise you to explain honestly. Gu Chen suddenly became angry: "Because of that glass of water, you still showed a flaw after all." ”

"You...... Are you sure?" Wang Defa glanced at Gu Chen coldly and said, "You police, don't you tell the evidence in everything? Although it is said that the glass of water was prepared for me by Zhao Xiaomi, so what? Could it be that the water cup can speak, and will tell you everything that happened that night? This is simply ridiculous. ”

He knew that Gu Chen had actually found his death hole.

The crux of the matter is here, but he still wants to fight once.

He didn't believe it, he didn't believe that Gu Chen could completely reproduce what he had done through a glass of water.

It's one thing to find a problem, it's another to solve it.

Gu Chen was very happy to see Wang Defa pretending to be calm, and under the reward of a hundred times of case-handling experience, Wang Defa's every move was invisibly betraying himself.

Maybe it's the authorities.

Perhaps it was Wang Defa's so-called composure that made him try to hide from the world.

This kind of cover-up made Gu Chen feel that his previous reasoning was completely correct, and he raised his voice and said, "That night, there were only three people who went to Zhao Xiaomi's house. ”

"I don't know how many people there are. Wang Defa twisted his head, shook his legs, and didn't dare to look at Gu Chen at all.

"You just need to know that we have already questioned two of them, and the drink they drank is the same drink we mentioned earlier, which is the drink left in a few glasses in the sink. ”

That's where Gu Chen's thinking began......

If this guy doesn't know clearly where his flaws are, I'm afraid this pretending to be calm will continue.

"So, first of all, I can be sure that the glass of water on the table is indeed for you, but we did find an anomaly in this glass of water, that is, fingerprints. ”

Saying this, Wang Defa turned his head slightly and glanced at Gu Chen coldly.

"You don't have to be so nervous. Gu Chen smiled coldly: "After testing, it is just the fingerprints of your ex-wife Zhao Xiaomi." ”

"Since it's not my fingerprint, then what are you doing in a surprise?" Wang Defa breathed a sigh of relief, feeling that Gu Chen seemed to be deliberately playing tricks on himself.

It's like a hunter playing a little game with you before hunting the prey, and then hunting it when the prey is relaxed.

Wang De found out that he was the so-called prey.

He deeply felt that Gu Chen in front of him was not simple, and he was now completely led by him, maybe he would bring you some sudden surprise.

"I'm wondering, why don't you have your fingerprints?" Gu Chen asked the question very confidently, as if he had already known the result.

"You ask me, who do I ask?" Wang Defa took a deep breath, holding on to his stubborn temper.

Gu Chen turned on his mobile phone, suddenly got up and walked in front of Wang Defa, and showed him the pictures of his mobile phone: "These pictures are provided by the technical department. ”

"Is it a fingerprint?" Wang Defa was stunned.

"Yes, fingerprints. Gu Chen nodded: "These are the fingerprints of the two suspects before, they touched the cup, but because the two of them drank a cold drink, due to the hot weather, the water molecules in the air will condense into water on the wall of the cup, and with such a cup, it will not leave a clear fingerprint." ”

Seeing that Wang Defa was affectionate and dignified, Gu Chen continued: "So the pictures you see are some not very clear fingerprints, which just confirms that the drinks that the two of them drank before were put away by Zhao Xiaomi and put them in the vegetable washing pool, and the last glass of water was specially prepared for you." ”

"But I didn't drink water. Wang Defa shrugged his shoulders and forced a smile: "I didn't touch the cup, so you can only find my ex-wife's fingerprints, and that glass of water may have been placed there all along, maybe my ex-wife drank it herself." ”

"No, you originally wanted to drink, or you touched the cup, but because you found out that you missed this after committing the murder, you used a paper towel, wiped off your fingerprints on the cup, and cleaned up the scene before leaving in a hurry. ”

Wang Defa was stunned for a moment, and before he could speak, Gu Chen immediately said: "I also know that you are a very self-disciplined person, and you have serious stomach problems, and you never drink cold drinks. ”

"And Zhao Xiaomi, as an ex-wife, must pour you warm water, and warm water has no effect on the glass. ”

Therefore, there will be fingerprints that are clearer than the previous two people, which is why the fingerprints left by Zhao Xiaomi on the cup are so clear. ”

Why did Gu Chen dare to be so sure? Because Zhao Xiaomi's roommate, Zhao Wenjing, often got some information from Zhao Xiaomi's mouth.

It is precisely because of this that Gu Chen understands what hobbies Wang Defa has, what are his problems, and even the size of shorts and the size of shoes are also topics of conversation between women.

After Lu Weiwei listened to Gu Chen's explanation, she said, "Senior Brother Gu, do you mean that after Wang De was murdered, in order to clean up the scene, he wiped off the fingerprints that should have been on the original cup with a tissue?"

"That's right. Gu Chen nodded affirmatively.

"No wonder. Officer Wang also couldn't help but say: "No wonder I saw you in the trash can at that time, as if you picked up a tissue into the evidence bag, it turned out to be this kind of consideration?"

Officer Wang was very confident, and he had always been very careful in the search at that time.

But before leaving, Gu Chen picked up the used white paper back into the evidence bag, which surprised Officer Wang.

But now that I think about it, I almost missed the key evidence with this kind of consideration.

"Do we still want to continue?" Gu Chen saw that Wang Defa did not speak, and once again showed the evidence he had.

Gu Chen flashed his phone to the latest fingerprint collection picture, and said conclusively: "You deliberately wiped off the fingerprints on the water cup, thinking that you could hide from the world, maybe your self-confidence made you ignore this, don't you know that fingerprints can also be extracted from paper towels? ”

"I ...... I really don't know what you're talking about?" Wang Defa lowered his head, his nervous legs trembling.

He's panicking now, he's completely panicking.

In the face of Gu Chen's indiscriminate bombardment of strong evidence, Wang Defa couldn't resist it at all.

Gu Chen smiled and said: "Then I can also tell you that if you want to extract fingerprints on a tissue, you can use the colored α-cyanoacrylate ethyl ester, which can be chemically displayed." ”

Crushing Wang Defa's stubbornness, Gu Chen is serious and will not let him have a chance to refute.

In the mobile phone, there is a picture just sent by Forensic Doctor Liu, which is the fingerprint evidence that has been successfully extracted from the tissue.

"Wang Defa, I advise you to be honest. Officer Wang also couldn't hold back the excitement in his heart, and said: "If you still seem to quibble, I can use the police car to take you to the technical department to see if the fingerprints on it are you Wang Defa." ”

Officer Wang completely broke through Wang Defa's last stubbornness......

He was speechless now, and he didn't know how to organize his language anymore.

Quibble?

Inexistent.

It's ridiculous to think that a paper towel discarded in the trash can turned out to be evidence of his own capsizing.

"Can paper towels extract fingerprints? Hehe, this is the first time I've heard of it. Wang De found that he had lost his hard energy, and he became depressed when he spoke.

"What? don't you believe it?" Gu Chen felt that this guy still had doubts, but he was happy to tell him: "Extracting fingerprints on paper towels, the results are related to the roughness of the paper towels, if they are too rough, the fingerprints will not have identification value." ”

Seeing Wang Defa's solemn eyes, Gu Chen continued: "But fingerprints are such things as fingerprints, which generally do not disappear after being left on hard objects, unless they are wiped or something, but you didn't destroy them in time." ”

In fact, with the latest technology, even if the fingerprints left by the suspect at the crime scene disappear, they can be re-extracted.

What's even more amazing is that the fingerprints on the leather bag can exist for more than thirty or forty years in a dust-free and dry environment.

In the interrogation room, there was a sudden pop, and the mobile phone that Wang Defa was holding in his hand fell directly to the ground.

He said indignantly: "When Qian stood up and spoke, all the truth was silent, I don't want to be like this, I really don't want to, it's not me who killed Zhao Xiaomi." ”

......