twin detective

Because of occupational reasons, it is very convenient to come into contact with certain medicines.

For example, benzene|propane|amine in this case.

But this idea just passed by in a flash, and Ning Yuan quickly denied it.

Theoretically speaking, it is unlikely.

"Because that Mr. Lin has a medical background, so you are suspicious?"

Once out of school, Ning Zhi asked the same thing.

Ning Yuan came back to his senses, just in time to find that his brother was looking at him.His previous emotions could no longer be seen in his eyes, but Ning Yuan still felt that his heart had been tugged a little bit.

The discussion just now was serious, but what he remembered was the glint in his brother's eyes when Mr. Liu inadvertently mentioned "little hooligan".Obviously, even now, he is still very sensitive to that matter.

This reminded him of Fang Yuan's seemingly unintentional but extremely careful question: Your brother won't find a way to get Lin Feifei in again, right?

Consciously or unintentionally, he glanced behind him, and found that the open space at the school gate was still the same as it was ten years ago.

It's just that the uncle in the reception room just opened the door and came out.

Hastily threw a cigarette butt in the trash can and went back.

"Far away." Seeing the person in a daze, Ning Zhi stretched out his hand and waved it in front of the person's eyes.

The sound was quite brisk, and Ning Yuan came back to his senses immediately.Immediately afterwards, he withdrew his gaze and met his brother's eyes.

Do you want to ask a question about Lin Feifei?

No need.

This kind of thought just passed by in a flash, and Ning Yuan subconsciously denied it.Not only do you agree with the other party's character from the bottom of your heart, but at this time, it's better not to bring up such a disappointing topic.

"Are you all right, are you feeling uncomfortable?" Ning Zhizi didn't know how many times his younger brother was going through his heart just now.He only thought that the other party was unhappy because of revisiting the old place, so he dragged the person out in a hurry.

"It's okay, just eat some candy." Ning Yuan feared that his brother would find out something, so he took the initiative to bring back the topic.

"As for whether that Mr. Lin will get the criminal materials because of his work, I think the possibility of this is very small. After all, all biopharmaceutical-related companies, laboratories and production workshops have strict access systems , and the security inspection system is also perfect.”

"Generally, after the work is finished, even protective clothing is not allowed to be taken out of the laboratory. Even if it is necessary to dispose of discarded medicines and equipment, there are relevant strict regulations. This is the same as the laboratory of the detachment, and because of the danger There are more items, and the rules are stricter.”

"Under such circumstances, it is indeed very difficult to get things out." Ning Zhi roughly thought about the management system of the detachment, and quickly denied this point.

He added, "The key is that there is no body now, so there is no way to find out exactly what kind of drug Mr. Wang was killed for."

Until now, claims like shake | head | pills are only based on the testimony of others, and there is an additional interference item of sleeping pills.

"Even if there are remains, it will take a long time to finalize the poisoning, let alone now."

In the end, Ning Yuan added such a sentence rather helplessly.

Since he joined the work, he has not encountered such a problem that there are almost no inspection materials.

Now, he kind of misses the rich inspection materials in the last case. Even though the inspection is tiring, it is better than living without rice like now.

When he returned to the office, Ning Yuan quickly passed the new news to everyone.

He poured a glass of water, ready to listen to everyone's criticism of the scumbag, but the focus of the two of them was obviously not here.

"I think Mr. Lin should be fine. Let's not talk about the strict management regulations of the laboratory, and he doesn't have any motive. After all, he and that teacher are just ordinary classmates. What reason is there to harm the other party? Refund [-] yuan Bu said, because he was worried that this extramarital affair would be exposed, it would be fine if he made it clear, there is no need to adopt such a stupid method. He also does this job and knows that no matter what medicine he uses, he will be found out in the end. "

Fang Yuan jumped out first, and then the assistant brother followed closely behind, "According to the second situation that my junior sister said, if the other party wants to solve it smoothly, there are really many ways to do it. If you just say some sweet words, it may be able to slow down the situation." For a while."

...So, this world really depends on faces. There have been suspected suspects before, and I have never seen you defending each other so enthusiastically.

Ning Yuan drank water while complaining, and the glass was almost empty when he regained consciousness.The point is that he also glanced at the bottom of the cup.

Fang Yuan rarely saw his senior brother show such a cute look, and almost burst out laughing.After being ridiculed by the younger brother, he quickly returned to the topic.

"Besides, poisoning is obviously more convenient for people who live together. The time of the incident was at night, and it would be too strange if the water was delivered specially. It is impossible for the victim to be completely unaware."

"Yes." Judging from the time, this situation is naturally more reasonable.Ning Yuan could not refute.

The assistant brother simply added a knife, "At that time, I heard from my senior sister that there was no exfoliated cells on the bottle. The things have already been sent back to Team Ning."

"It must have been wiped on purpose afterwards, and I don't know if the fingerprints were left by chance." Fang Yuan was a little annoyed when she heard this.

Because on some things at the scene of the crime, biological samples and fingerprints will be left at the same time.If you are not careful in this situation, physical evidence will often be destroyed.Therefore, the position of the fingerprint is generally confirmed by lighting first, and then the forensic doctor takes the test material.

Now... even the exfoliated cells were not found, the probability that the fingerprints were not wiped was really too small.

It is difficult to compare biological samples because there are no remains, but if it is fingerprints, there are too many left behind for various reasons.Such as the ID card system, such as some special forms.

But if you don't even have this, it's hard to guess which one was the last to touch the bottle.

Ning Yuan wants to know the answer earlier, but his brother has been busy in the simulation community for several days, knowing that he can't be disturbed, so he resists the idea of ​​going to have a look.

And at the new case discussion meeting, Ning Zhi's first sentence broke his inherent thinking, "This is the fingerprint extracted from the medicine bottle. After comparison, it can be confirmed that it is the victim's."

Except for the bottle itself, the pictures of the other test materials for comparison are also placed on the PPT, which is the preserved diary and the form left by the deceased in the school during his lifetime.

Biological samples and sweat were not detected, but left absolute physical evidence for the deceased to prove that she did touch the vial.

This can only prove two points of view: First, the victim did commit suicide by taking medicine.Second, someone did it on purpose to leave clues to the police.

Therefore, after Ning Zhi uttered this conclusion, the meeting room almost exploded.But Ning Zhi swept this way again, and everyone became quiet, and all their eyes turned to the DNA laboratory.

Seeing being stared at by everyone, the forensic lady's face was also full of disbelief and doubts, "The fingerprints are complete, haven't they been destroyed?"

"Although I also saw fingerprints under the light before, they looked relatively complete, and the approximate location was on the bottom of the bottle. But I have searched the rest of the bottle, including gaps and other curved surfaces, and found no sweat or other creatures material inspection."

In other words, the fingerprint appeared on it almost out of thin air.Moreover, the location is really low.

"On it, only two fingerprints of the deceased were found, one from the thumb and index finger. Other than that, it was very clean. Even the accompanying palm prints did not appear at all."

As he said that, Ning Zhi also took a bottle as a demonstration.When he pinched the bottle, he only used two fingers, and they were only on the low side.

Looking at the action like this is really funny, even Fang Yuan, who is as timid as a mouse in front of Ning Zhi, couldn't help laughing.But after the laughter, everyone can feel that something is wrong.

When normal people hold the bottle, they will habitually hold it as a whole, that is, five fingerprints and palm prints of one hand will be left on the bottle at the same time.The location is also in the upper middle.

"So this situation is obviously done on purpose, it's definitely not an unconscious behavior." Fang Yuan came to a conclusion based on this, and then she leaned over to talk to Ning Yuan, "There is nothing on the combined bottle, but there are these two fingerprints alone. You can basically suspect that someone first wiped off all the marks on the bottle and then put your finger on it."

"According to the objective development sequence, this can only be the case. But this is obviously not something that a person who has decided to commit suicide would consider."

Ning Yuan answered, thinking about this possibility in his heart.Moreover, from the point of view of the fingerprints, the authenticity of the suicide note seems to be open to question.

But when he looked up, he saw that the PPT had been cut to the next page, and it was the picture of the letter paper.

On the right side of the letter paper, there is a big "Duo" character.

Originally, it was just handwriting written with an ordinary black carbon pen, but when it was photographed by a video digital microscope, the image left was much larger.

This kind of instrument is portable and handheld, with a magnification of [-] or even [-] times, even the tiny handwriting is clear at a glance under it.

Including the overall characteristics of the handwriting, the trend of each stroke, the depth of strength and the material of the paper used.

Now, what is projected on the screen is the image left under this situation, and Ning Yuan feels that he has never had such a deep impression on it.

Obviously, the next thing to talk about is the part about handwriting inspection.

Just as Ning Yuan changed his mind, Ning Zhi also used the remote control to switch the PPT page.

At this moment, hanging on the curtain is the overall picture of the last letter.

This may be the last physical evidence left by the victim in this world.

Of course, until now, its authenticity has yet to be verified.