I am a super cop

Chapter 72 Disappearing Fingerprints

Wang Defa originally thought that he was a very smart person who would consider all aspects in everything he did, but in the end he met Gu Chen, a trainee policeman with a Citroen on his epaulettes.

He thinks that Gu Chen's opinion is not enough to convict, after all, it's 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 aura is firmly suppressed by the other party.

No matter how you pretend to be strong, the other party seems to be able to see through your mind.

Wang De discovered that what he was facing was such a top expert. Gu Chen's confidence seemed to stem from the fact that he held absolutely unfavorable evidence in his hands.

"What on earth are you trying to say? I'm very busy, so I don't have time to accompany you guys to speculate here." Wang Defa took out his mobile phone.

Doing this is also to divert my guilty conscience.

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

"Wang Defa, at this point, I advise you to tell the truth." Gu Chen suddenly stiffened: "Because of that glass of water, you still showed your flaws after all."

"You...Are you sure?" Wang Defa gave Gu Chen a cold look, and said, "You police, don't you always use evidence? Even though Zhao Xiaomi prepared that glass of water for me, so what? Can the water glass talk? Tell you everything that happened that night? It's just ridiculous."

He knew that Gu Chen had actually found his dead spot.

The crux of the problem is here, but he wants to fight again.

He doesn't believe, doesn't believe that Gu Chen can completely reproduce what he did through a water glass.

Finding a problem is one thing, and solving it is another.

Gu Chen was very happy to see Wang Defa pretending to be calm. With the reward of a hundred case handling experience, every move of Wang Defa betrayed himself invisibly.

Maybe a fan of the authorities.

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

Such a cover-up made Gu Chen feel that his previous reasoning was completely correct. He raised his voice and said, "There were only three people who went to Zhao Xiaomi's house that night."

"I don't know how many people there are." Wang Defa turned his head and shook his legs, not daring 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 exactly what we mentioned before, that is, the drink left in a few glasses in the vegetable sink."

Gu Chen's thinking started from here...

If this guy is not allowed to clearly know 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 prepared for you, but we did find an abnormality in this glass of water, that is, fingerprints."

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

"You don't have to be so nervous." Gu Chen said with a cold smile, "After testing, it's just your ex-wife Zhao Xiaomi's fingerprint."

"Since it's not my fingerprint, then why are you so surprised?" Wang Defa heaved a sigh of relief, feeling that Gu Chen seemed to be playing tricks on himself.

It's like a hunter playing a small game with you before hunting the prey, waiting for the prey to relax before hunting with one bite.

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

He deeply feels that the Gu Chen in front of him is not simple, he is completely led away by him now, maybe he will bring you some sudden surprise.

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

"You ask me, who should I ask?" Wang Defa took a deep breath, holding back his stubborn temper.

Gu Chen turned on the phone, got up suddenly, walked to Wang Defa, and showed him the pictures on the phone: "These pictures are provided by the technical department."

"Is it a fingerprint?" Wang Defa was taken aback.

"Yes, it's fingerprints." Gu Chen nodded: "These are the fingerprints of the two suspects before. They touched the cup, but because the two of them were drinking iced drinks and due to the hot weather, the water molecules in the air It will condense into water on the wall of the cup, and with such a cup, it will not leave clear and clear fingerprints."

Seeing Wang Defa's solemn expression, Gu Chen continued: "So the pictures I showed you are some unclear fingerprints, which just proves that the drinks that the two of them drank before were all taken away by Zhao Xiaomi and put in the In the vegetable sink, and the last glass of water is specially prepared for you."

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

"No, you originally wanted to drink, or you touched the cup, but after you committed the crime, you found out that you had missed it, so you used a tissue to wipe off your fingerprints on the cup deliberately, and cleaned up the scene , and left in a hurry.”

Wang Defa was stunned for a moment, but 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, so you never drink iced drinks."

"As an ex-wife, Zhao Xiaomi must have poured warm water for you, and warm water has no effect on the glass."

"That's why there are fingerprints that are clearer than those of the previous two people. This is why Zhao Xiaomi's fingerprints on the cup are so clear."

Why is Gu Chen so sure?Because Zhao Xiaomi's roommate, Zhao Wenjing, often gets some information from Zhao Xiaomi.

It is precisely because of this that Gu Chen understands what Wang Defa's hobbies and problems are, even what size shorts he wears and what size shoes he wears are all things that women talk about.

After listening to Gu Chen's explanation, Lu Weiwei said, "Junior Brother Gu, what do you mean, after Wang De released the crime, in order to clean up the scene, he wiped off the fingerprints that should have been on the cup with a tissue?"

"That's right." Gu Chen nodded affirmatively.

"No wonder." Officer Wang said involuntarily, "No wonder I saw you in the trash can and seemed to pick up a paper towel into the evidence collection bag. So it was because of this consideration?"

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

But before leaving, Gu Chen picked up the used tissue and put it back into the evidence collection bag, which surprised Police Officer Wang.

But now that I think about it, I have such considerations, and I almost missed the key evidence.

"Should we continue?" Seeing that Wang Defa was silent, Gu Chen once again showed the evidence he had.

Gu Chen refreshed his phone to the latest fingerprint collection pictures, and said with a final word: "You deliberately wiped off the fingerprints on the water glass, thinking that you could hide it from the world, maybe your self-confidence made you ignore this point, don't you know that the fingerprints on the paper towel Is it also possible to extract fingerprints? Moreover, the fingerprints wiped off the cup can also be seen carefully in terms of technology."

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

He was panicking now, completely panicked.

Under the indiscriminate bombardment of Gu Chen's strong evidence, Wang Defa couldn't stand it at all.

Gu Chen smiled and said: "Then I can also tell you that if you want to extract fingerprints on paper towels, you can use colored α-ethyl cyanoacrylate and chemical visualization."

Gu Chen is serious about crushing Wang Defa's stubbornness, and will not give him a chance to refute.

On the phone, there is the picture that Forensic Liu just sent, which is the fingerprint evidence that has been successfully extracted from the tissue.

"Wang Defa, I advise you to tell the truth." Police officer Wang couldn't bear the excitement in his heart, and said, "If you still seem to be sophistrying, I can take you to the technical department in a police car and have a look at the fingerprints on it. Is it you, Wang Defa?"

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

Now, he is speechless and doesn't know how to organize his words.

quibble?

nonexistent.

It is ridiculous to think that a piece of paper towel discarded in the trash can turns out to be evidence of self-capsulation.

"Tissues can extract fingerprints? Hehe, this is the first time I've heard of it." Wang De found that he lost his temper and became frustrated when speaking.

"What? You don't believe it?" Gu Chen felt that this guy still had doubts, and he was more than happy to tell him: "The results of extracting fingerprints on paper towels are related to the roughness of the paper towels. Fingerprints will have no authentic value."

Seeing Wang Defa's serious eyes, Gu Chen continued: "But things like fingerprints usually won't disappear after being left on hard objects, unless you wipe them or something, but you didn't destroy them in time."

In fact, with the latest technology, the fingerprints left by criminal suspects at the crime scene can be retrieved even if they disappear.

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

In the interrogation room, there was a sudden thud, and the mobile phone Wang Defa was holding fell directly to the ground.

He said indignantly: "When Qianqian stood up to speak, all the truths were so silent, and I didn't want to make it like this. I really didn't want to. I really wasn't the one who killed Zhao Xiaomi."

……

　Ask for a collection and a recommendation ticket!

　　


(End of this chapter)