Chapter 72 Disappearing Fingerprints

Chapter 72 The Disappearing Pointer

Wang Defa originally thought that he was a very smart person who would consider all aspects when doing things, but after all, he met Gu Chen, a trainee police officer with a Citroën on his epaulette.

He believed that Gu Chen’s opinion was not enough to convict him. After all, it was just speculation and not evidence at all.

But Gu Chen’s confident eyes seemed to be even sharper than when he was the most powerful person in the mall.

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

No matter how hard 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 expert. Gu Chen’s confidence seemed to stem from the fact that he had absolutely unfavorable evidence in his hands.

“What do you want to say? I’m very busy and I don’t have time to speculate with you here.” Wang Defa took out his mobile phone.

This is also done to divert one’s guilty conscience.

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

“Wang Defa, now that things have come to this, I advise you to tell the truth.” Gu Chen suddenly became tough: “Because of that glass of water, you still exposed your flaws after all.”

“You…are you sure?” Wang Defa glanced at Gu Chen coldly and said, “Don’t you, the police, rely on evidence in everything? Although Zhao Xiaomi prepared that glass of water for me, so what? Could it be that the water glass could tell you everything that happened that night? This is simply ridiculous.”

He knew that Gu Chen had actually found his Achilles’ heel.

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

He didn’t believe that Gu Chen could completely recreate what he had done through a water glass.

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

Gu Chen was happy to see Wang Defa pretending to be calm. With the reward of a hundred cases handling experience, Wang Defa’s every move was betraying him invisibly.

Maybe he is a fan of the authorities.

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

Such cover-up made Gu Chen feel that his previous reasoning was completely correct. 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 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 drinks they drank are exactly what we mentioned before, that is, the drinks left in several glasses in the sink.”

Gu Chen’s thinking started from here…

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 confirm that the glass of water on the table is indeed prepared for you, but we did find an abnormality in the glass of water, and 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 was just your ex-wife Zhao Xiaomi’s fingerprint.”

“Since it’s not my fingerprint, then why are you so surprised?” Wang De breathed a sigh of relief, feeling that Gu Chen seemed to be teasing him intentionally.

Just like a hunter plays a small game with you before killing the prey, and then kills it with one bite when the prey is relaxed.

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

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

“What I’m curious about 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 am I asking?” Wang Defa took a deep breath, holding on to his stubborn temper.

Gu Chen turned on his phone, suddenly stood up and walked to Wang Defa, showing him the pictures on his phone: “These pictures are provided by the Technology Department.”

“Is it a fingerprint?” Wang Defa was stunned.

“Yes, it’s fingerprints.” Gu Chen nodded: “These are the fingerprints of the two suspects before. They touched the cups, but because they drank iced drinks, due to the hot weather, the water molecules in the air Water will condense on the wall of the cup, and with such a cup, no clear fingerprints will be left.”

Seeing Wang Defa’s solemn expression, Gu Chen continued: “So the pictures I showed you are some unclear fingerprints. This also confirms that the drinks the two of them drank before were all taken away by Zhao Xiaomi and put away. In the sink, the last glass of water is specially prepared for you. “

“But I didn’t drink the water.” Wang Defa shrugged and said with a forced smile: “I didn’t touch the glass, so you can only find my ex-wife’s fingerprints, and the 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 had touched the cup, but after you committed the crime, you discovered that you had omitted it, so you used a tissue to wipe off your fingerprints on the cup and cleaned up the scene. , and left in a hurry.”

“As my ex-wife, Zhao Xiaomi must have poured you warm water, and warm water has no effect on the glass at all.”

“That’s why the fingerprints left are clearer than those of the previous two people. This is why Zhao Xiaomi’s fingerprints left 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’s mouth.

It was precisely because of this that Gu Chen learned that Wang Defa’s hobbies and problems, as well as the size of his shorts and shoes, were all topics of conversation among women.

After listening to Gu Chen’s explanation, Lu Weiwei said, “Junior Brother Gu, do you mean that after Wang De committed the murder, in order to clean up the scene, he used a tissue to wipe off the fingerprints that should have been on the cup?”

“That’s right.” Gu Chen nodded affirmatively.

“No wonder.” Officer Wang couldn’t help but said: “No wonder I saw you in the trash can and seemed to pick up a tissue and put it into the evidence bag. So this was the consideration?”

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

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

But now that I think about it, because of this consideration, 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 picture and said decisively: “You deliberately wiped off the fingerprints on the water glass, thinking that you could hide it from others. Maybe your self-confidence made you ignore this. Don’t you know? Can fingerprints be extracted? And the fingerprints wiped off the cup can also be seen technically. “

“I…I really don’t know what you are talking about?” Wang Defa lowered his head, his nervous legs trembling.

He was panicked now, completely panicked.

Faced with the indiscriminate bombardment of Gu Chen’s strong evidence, Wang Defa simply couldn’t resist.

Gu Chen smiled and said earnestly: “Then I can also tell you that if you want to extract fingerprints from paper towels, you can use color-attached α-cyanoethyl acrylate and chemically reveal it.”

To crush Wang Defa’s stubbornness, Gu Chen was serious and would not let him have a chance to refute.

On the phone was the picture just sent by Forensic Doctor Liu, which was the fingerprint evidence that had been successfully extracted from the tissue.

“Wang Defa, I advise you to tell the truth.” Officer Wang couldn’t hold back his excitement and said, “If you still seem to be quibbling, I can take you to the technical department in a police car and look at the fingerprints on it. Is it you Wang Defa?”

Officer Wang completely defeated Wang Defa’s last stubbornness…

He was speechless now and didn’t know how to form words anymore.

quibble?

nonexistent.

It’s ridiculous to think that a piece of paper towel discarded in the trash can is evidence that the boat capsized.

“Can paper towels pick up fingerprints? Haha, this is the first time I’ve heard that.” Wang De found that he lost his composure and became frustrated when he spoke.

“What? You don’t believe it?” Gu Chen felt that this guy still had doubts, so he was happy to tell him: “When extracting fingerprints from a tissue, the result is related to the roughness of the tissue. If it is too rough, the fingerprint will appear Fingerprints will have no identification value.”

Seeing Wang Defa’s serious eyes, Gu Chen continued: “But fingerprints generally won’t disappear after they are 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 suspect’s fingerprints left at the crime scene disappear, they can be extracted again.

What’s even more amazing is that fingerprints on leather bags can survive for more than thirty or forty years in a dust-free and dry environment.

In the interrogation room, there was a sudden thud, and the mobile phone in Wang Defa’s hand fell to the ground.

He said angrily: “When money stands up to speak, all truth becomes silent. I don’t want it to be like this. I really don’t want it. It’s really not me who killed Zhao Xiaomi.”

……

Please collect and recommend!

(End of chapter)