Detective: I have a split personality, but I’m really not a murderer

Forensic department, laboratory!

As Xiong Leilei's voice sounded at the door, everyone turned to look, and their eyes were basically focused on Gao Ting.

Highgarden suddenly felt like a light was shining over them, as if everyone's eyes were filled with thorns.

Director Sun Changming stepped forward with a smile:

"Highgarden?

He is indeed a talented person, not bad!"

He was busy yesterday and did not see Gao Ting. At this moment, he looked up and down at Gao Ting with admiration in his eyes:

"I am Sun Changming, director of the Chaoyang Investigation Bureau.

If you want to identify physical evidence, you need to pass the technical test first. Xiong Leilei must have told you! ?

More, I will not be verbose.

If you have no questions, then start the test directly! After Gao

Ting nodded, Sun Changming looked at the technicians behind him who were sharpening their knives:

"You guys start asking questions!"

As soon as he finished speaking, a technician stood up immediately:

"Then I'll go first!

Don’t you want to conduct physical evidence identification? Then the first question is, what is the most basic principle of physical evidence identification?"

"It’s the law of material exchange! Gao

Ting smiled and said:

"This law was proposed by French professor Locard when he helped the Bureau of Investigation solve a case.

The content of the law is that any criminal will exchange material with the victim or the crime scene.

Investigators can search and identify these substances to determine the murderer's occupation, gender, work, etc., narrow the scope of the investigation, and finally identify the murderer!"

This question seems simple, but in fact the intention is a bit"sinister".

The High Court claims to personally identify the physical evidence, but if such a basic question cannot be answered, why not just lose face?

Don't talk about identifying the physical evidence then, he He still has the nerve to stand in this room because he is so thick-skinned!

"Yes, but many ordinary people can answer this question.

Another technician said :

"Let me ask a more specific question this time.

Rice starch, bismuth, zinc oxide, magnesium stearate and iron oxide were detected in the powder sample collected from under the suspect's fingernails.

What do you think these powders are?"

"It’s women’s cosmetics!"

High Court quickly said:

"The iron oxide in the sample appears red and was previously known as Venetian Red.

Venetian red has been used to make women's cosmetics a long time ago.

Remaining rice starch, etc., are also substances that often appear in cosmetics.

Since these powders were found from the suspect’s nails, if cosmetics with the same substance ratio are found in the victim’s cosmetics.

It should be possible to determine the suspect's suspicion of committing the crime!"

"What clues can hair provide when used as physical evidence?"

Another technician came forward.

Gao Ting spoke directly without thinking:

"If it is hair with hair follicles, DNA identification can naturally be performed!

In addition, under a microscope, the structure of hair is actually huge and complex.

It can be judged from the shape of the roots whether the hair falls off naturally or is pulled out by external force.

From the hair cuticles, it can be determined whether the hair comes from humans or animals such as cats and dogs.

From the color and shape, the family genetic information of the hair owner can be obtained.

Based on the substance residues on the surface of the hair, the living environment of the owner and the shampoo and conditioner used can also be identified.

Even how often you wash your hair, when you last washed your hair, etc.

Through this information, we can further infer the economic situation, living habits, working environment, etc. of the hair owner."

"What are the most common methods used when looking for physical evidence such as fibers, hair, etc.?"

"Tape hair!

Tape can pick up small substances such as hair, fibers, paint, and glass shards.

The tape is transparent, so even if the adhered material is too small to be detected by the naked eye, a strong light source can be used to make it visible."

Hearing Gao Ting's answers to the four questions, the anger and dissatisfaction on the faces of the technicians slowly turned into surprise.

Some of these four questions were more basic and some were more professional.

Gao Ting answered them all. Very correct!

"The High Court seems to have some understanding of physical evidence appraisal!"

"It’s enough to know Locard’s law of material exchange and the tape method.

I didn’t expect that he could easily answer the composition of cosmetics and the characteristics of hair."

"It seems that he is not specialized in investigation, but also in forensics and appraisal!"

……

A group of technicians were discussing, and the technical captain He Fudao spoke loudly:

"These questions may seem too simple to the High Court, but in fact they are all details that a layman can understand by reading a few books.

You should ask some professional questions, otherwise, people will think that our technical team is really just a bunch of"gibberish"!"

Well, a loser!

Gao Ting clearly remembered that Xiong Leilei said this word when he told him about Zhou Yiting's curse! When He

Fudao said this, he emphasized the word, and sneered slightly, glancing at Zhou Yiting next to him.

Obviously , he has a very deep memory of being scolded before!

"Now that the captain has spoken, let me ask a professional!"

A technician said:

"What equipment is needed to examine the details of a fiber?

What are the advantages of this device?"

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