Forensic Medicine Qu Xiaoshui

Chapter 340 Death Mask (8)

Yan Yuanye said unwillingly: "If the prisoner knows that his feet haven't touched the ground, then he certainly doesn't have to worry about leaving footprints on the scene!"

Yan Yuanye's speech was once again ignored by everyone.

That's right, here, he is air!Everything you say is bullshit!

Qu Xiaoshui said: "Judging from the wound on the back of Lin Zhizhi's head, he should have been hit hard before he was alive. There are obvious life reactions at the wound."

Mi Yu moved the notebook over more simply: "After I used computer software to calculate, I can basically conclude that the murder weapon is a common iron pipe with a diameter of 5 cm and an unknown length."

"I also made a 3D demonstration of the murderer's modus operandi." While speaking, Mi Yu connected the computer to the projector, and a set of 3D animations began to be demonstrated on the screen.

Mi Yu explained: "Judging from the perspective of Lin Zhizhi's height and the remaining traces of death mold, the murderer should have forced him to kneel in front of a plastic box filled with silicon rubber, and pressed Lin Zhizhi's head from behind. live, submerged in fluid silicone until it suffocates."

The 3D animation presents the whole process very well, giving everyone the most intuitive feeling.

After watching the whole demonstration, Qu Xiaoshui turned the pen in his hand very fast: "Assuming that the murderer weighs one hundred catties and puts all his body weight on the victim, even if Lin Zhizhi is pressed into the silicone rubber If you are still conscious, you will still suffocate to death."

Jiang Yue nodded in agreement, put his hands together and put them on the table: "That's right, if the murderer wanted to preserve the expression on his face at the moment of his death, would he have deliberately chosen to kill Lin Zhizhi when Lin Zhizhi was still conscious? People pressed into the silicone rubber."

Mi Yu immediately clapped his hands in agreement: "I agree, only in this way can we make the most realistic death mask."

Bai Li gathered the coat she was wearing, and shivered slightly: "Hmm~ Do you think it's a bit cold in the office?"

Yan Yuanye happily threw away the notebook in his hand, ran to the door, and raised the temperature of the air conditioner in the room by a few degrees: "How is it now?"

It never occurred to him that Bai Li was just a little frightened, and it was okay to stay still.

Bai Li twitched the corner of her mouth and thanked dryly: "Thank you, I'm much better now."

Seemingly aware of the subtlety of everyone's expressions, Yan Yuanye scratched the back of his head: "Did I say something strange?"

"Didn't you even notice yourself?" Qu Xiaoshui looked at him in surprise.

Everyone looked at each other, and laughed out loud at Yan Yuanye's inexplicable innocent expression.

The cold feeling in the office disappeared with the laughter.

Suddenly I feel that a bear child can also be a big baby!

Well, the big baby that adjusts the atmosphere.

"Just like what Bai Li said before, from the fact that no fingerprints or hairs were left at the scene, it can be seen that the murderer must have acted very cautiously." Qu Xiaoshui tapped on the table, bringing everyone's attention back together .

Jiang Yue pushed the test sheet among several people: "The gypsum used to remove Lin Zhizhi's face mold is calcium sulfate hemihydrate [CaSO4*1/2H2O]. I tested it, and its melting point is a high temperature of 1450 degrees. , the specific gravity is 2.96, and the hardness is 3.5."

Mi Yu took a sip of water calmly: "It seems that it is an ordinary plaster that can be bought anywhere, and it has no reference value."

Yan Yuanye looked at the people who were in an impasse, and asked on a whim: "Seeing that you have been discussing for so long, what is the specific situation of this Lin Zhizhi?"

Several people who had been silent in the previous discussion all looked over.

Yan Yuanye didn't think his question was very strange, so he said straightforwardly: "It's useless for you to see me! I just don't know!"

Qu Xiaoshui had no choice but to push the deceased's identity information over with a headache: "The deceased's name is Lin Zhizhi, 45 years old, a native of City B, married. He worked for a real estate company and was the manager of an independent branch."

"The police have investigated his interpersonal relationship and have not found any conflicts in the workplace or family disputes."

Yan Yuanye flipped through it a few times casually, then threw the information in front of Bai Li: "That is to say, the murderer's motive has not been found yet, right?"

Qu Xiaoshui nodded.

Not knowing where Qu Xiaoshui's nod hit Yan Yuanye, he stood up excitedly: "That's right! The murderer's motive must be to make a death mask!"

"The murderer must be a death mask killer!"

No one spoke for a while, and there was some silence.

Everyone didn't know how to persuade this older youth who hadn't finished the second term of middle school.

It was Bai Li who closed the information in her hand and rolled her eyes: "Don't just give such a naive name."

Qu Xiaoshui tried to bring the topic back on track: "The time the murderer chose to commit the crime was in the middle of the night, and the location was a deserted container warehouse. So there should be no witnesses."

"If the murderer is like what Yan Yuanye said, he is a hedonistic perverted murderer who cannot be deduced by common sense, the only clue to lock the murderer is his modus operandi."

At this time, the sound of the machine's successful detection sounded, and the printer automatically printed out the test report.

"I'll get it!" Yan Yuanye ran over energetically, and ran back in a hurry.

"Ah~ It's the result of component analysis!" Why is there a little disappointment in the tone?

Yan Yuanye handed the information to Qu Xiaoshui.

"Thank you." Qu Xiaoshui checked carefully after thanking him.

Then handed the test sheet to Mi Yu: "You also have a look."

Mi Yu stated while watching: "The silicone rubber used by the murderer is different from the ordinary silicone rubber sold in the market."

Qu Xiaoshui nodded: "Yes, all the data are much higher than those on the market."

"So, did the murderer make the silicone rubber himself?" Jiang Yue recorded this discovery in the notebook with his slender fingers holding a pen, with clear and sharp handwriting.

Mi Yu nodded: "Yes, but because of the complex composition of the polymer compounds involved, even though our machines are already very advanced, we still cannot find out the specific production method."

"Leave it to me." Bai Li spread out her palms and asked Mi Yu for the laboratory report and samples: "I know the director of the Polymer Materials Research Center of the University of Science and Technology."

She curled the long hair hanging down her cheeks with her fingers, and smiled meaningfully: "Maybe he can find out the detailed ingredients and production methods there."

Yan Yuanye still didn't know how to look at people, and didn't notice the silence of Qu Xiaoshui and the others at all, and asked directly, "How do you know such a person?"

What kind of person?

This was the first question that came to Bai Li's mind.

Does it mean the elegant temperament of the other party?Or as a scholar?Or keep in good shape?

　Thank you Jiuban for the generous monthly pass
　　Thank you cute for your support! O(∩_∩)O haha~
　　Ps:

　　Small knowledge expansion: There is 1/2 mole of water in a mole of hydrate molecules, and this hydrate is called hemihydrate.

　　All hydrates are pure substances.

　　For example:

　　Dihydrate gypsum (CaSO4·2H2O) is also known as raw gypsum. After calcination, part of the water is lost to obtain hemihydrate gypsum (CaSO4·1/2H2O), also known as plaster of paris.Both the raw gypsum and the plaster of Paris are pure substances.

　　
　
(End of this chapter)