novice forensic medicine

Chapter 420 Hairless Skin

Cui Lili rolled her eyes not gracefully, and said angrily.

"If I want your ability, I won't do this job. Don't worry, the picture I sent you is a photo taken by a professional camera under a microscope. You can analyze the texture yourself. I can't tell where it is. "

Zhou Ning nodded, brought the report over, and waved towards Cui Lili.

"Thank you, big sister. Let Director Xu treat us to dinner later. He already owes our office a meal. We will try to make him pay back what he owes before the Spring Festival."

"Let's go, I dare not tell the leader that."

Zhou Ning took Sun Gaotie and hurried back to the office. Xiao Qu snorted and held a coffee cup, sitting on the sofa a little sleepy. It seemed that he hadn't slept all night.

"Is there any progress last night?"

Xiaoqu nodded.

"Last night, it should be early this morning. We searched and found two surveillance videos. One was at 2012:11 pm on November 26, 15. There were three people sitting on Zhang Wannian's black Camry, but the window film was too dark. Only one side view can be taken.

The other part is the monitoring at 2012:11 am on November 30, 8. It is still Zhang Wannian’s black Camry, but there are two people in the car. I analyzed it for a long time, but I didn’t see anything. I will let the software analyze it now. , to see if there are any discoveries.

By the way, Bureau Xu sent people to Huining Province. They felt that Zhang Wannian hadn't found anything, so they wanted to investigate from Liu Xiangrui. Maybe it was because of their emotional or economic entanglements with Liu Xiangrui that they cooperated with Zhang Wannian to operate all this. "

Zhou Ning nodded, asking Hui Ning to assist in the investigation, it is impossible to be meticulous in doing it himself.

"Who went to Huining? Could it be Sister Fei?"

Big Zhao came over, bared his teeth and said with a smile:

"Before you came in, Director Xu had just left, and Xiaobai came back last night, so I asked Sister Fei and Xiaobai to lead the team to Huining. Liu Xiangrui's outdoor sporting goods company is not managed by someone, but still manages it. The club wants to talk to this person in detail."

This combination really makes people feel a little helpless. In terms of personal work ability, Xiao Bai is not as good as Xiao Zeng, but Xiao Zeng's fierce pursuit of Liu Yufei gave Xu Dayuan some headaches, and together they affected his work, so he sent Xiao Zeng down. Go exercise.

But Xiaobai's ability is really not flattering, his level is not constant, Zhou Ning shook his head and stopped thinking, forwarded a few emails, and then dialed Xu Dayuan's cell phone.

"Leader, I heard you are going to Huining?"

"Uh, I didn't go, Liu Yufei led the team, why did you find something there?"

"The report is out. I just sent it to you. Take a look."

"I just went downstairs and I don't want to go up again. The text in the report is too small, and it's really hard to read it on my phone. Tell me, what's in the report."

Zhou Ning was speechless for a while, but this sentence sounded so familiar. It seemed that he had said the same thing to Sister Cui just now. Rubbing his nose, Zhou Ning recounted the information he had just received, but Xu Dayuan grasped the point.

"So, are the fingerprints matched?"

Zhou Ning was even more speechless, and said with a sigh.

"I went to the clinical laboratory and called you right away. The leader can't rush you like that. Besides, I saw the fingerprint picture. It's just an incomplete fingerprint, or the outer edge of the finger. It's not usually collected here.

The possibility of finding people by relying on this is very low, unless the suspect is found, and the same part is extracted on the spot for comparison.

I called you because I heard that Sister Fei is going to Huining, and I want her to take fingerprints and blood samples of all the people who are questioned, and just do local testing. "

"Ha, don't worry, don't worry, I told Liu Yufei, they flew early in the morning, and they will arrive in more than an hour, but you should try the fingerprints first, in case you find anything!

Oh, by the way, there is another thing for them to go to Huining, that is, the former brother-in-law of Zhang Wannian found a withdrawal information. On December 2012, 12, he withdrew 31 cash at the ATM. They used to check Take a look at his whereabouts. "

After finishing speaking, he hung up the phone with a snap.

Zhou Ning held up the phone speechlessly, and talked too much with Xu Dayuan, which really made people angry, but this is the leader, and you can't hate him.

Liu Yongxin came over and patted Zhou Ning on the shoulder.

"He has such a temper. Did you send the fingerprints to the mailbox? Let's take a look together."

Zhou Ning patted his head and remembered about the skin flap, so he quickly asked Xiao Qu to open the mailbox and download the picture, throw the fingerprint to Da Zhao to search, and he enlarged the picture of the skin flap to fill the screen.

Not to mention, the pictures taken by this kind of microscope high-definition camera are really very clear, but after looking around the screen, I found that the skin flap is very thin, with almost no lines, and there is no hair on the surface. This discovery made Zhou Ning pause.

Zhu Xingxing and Xia Momo approached, and Xia Momo was the first to react.

"Hey, what a big piece of skin this is, why is there not a single hair on it, is it a woman?"

Zhou Ning shook his head.

"It doesn't have to be a woman. There are some parts of the human body that do not have hair growth, such as the palms and soles, the flexor surfaces of the fingers, the extension surfaces of the distal fingers, the red lips, the nipples, the inner surface of the foreskin, the labia minora, the inner side of the labia majora, and the penis, etc. without hair distribution."

Zhou Ning's words made several people quiet down. Xia Momo didn't understand at first, but she also understood the latter part. Zhu Xingxing felt embarrassed. Liu Yongxin came over, they stepped aside a little, and glanced at Liu Yongxin said:

"The color is light, the thickness is about the same as normal skin, there is a deep horizontal line in the middle, and there are light lines vertically. Put these characteristics together, Zhu Xingxing, Sun Gaotie, and you guys, can't tell where this is? "

Such a sentence made Zhu Xingxing blush for a while. As a forensic doctor, it is embarrassing to talk about various parts of the body at the moment. After a moment of pondering, she suddenly realized:

"I understand. This refers to the skin on the side of the proximal segment and the middle segment, the middle segment and the non-segment. To put it bluntly, it is the skin between the fingers and the side of the joint. The metabolism here is fast, and even if it is not a scar constitution, it is easy to leave here. Scars."

Zhou Ning nodded, Xia Momo didn't seem to move, Zhou Ning stretched out his hand and pointed her to the location just mentioned, Sun Gaotie looked puzzled, stretched out his hand, making a scratching motion.

"It's too rare to be able to catch here. Generally, the damage caused to the murderer during the resistance process is on the forearm of the back of the hand. Who would open his fingers to tear at the victim? It's not convenient to hold a dagger like this?"

Zhou Ning smiled, Sun Gaotie is a brainy person, and he can take the initiative to analyze, which is the best quality in the forensic profession.

"That's right. Based on the analysis of Zhang Wannian's death condition, the stabbing site was the upper edge of the right collarbone. The stabbing angle was 30 degrees from top to bottom. After the stabbing, the murderer did not pull out the dagger directly, but Cut across the front of the neck of the deceased.

The deceased Zhang Wannian was 176cm tall, one centimeter taller than Liu Xiangrui. This height is above average. Unless Zhang Wannian was squatting or kneeling, the murderer would not be able to stab and cut him in the front.

But Zhang Wannian’s knees and sacrum were not damaged, and there were only dirt marks on the front of his clothes. He was not sitting or squatting. All this does not match the frontal attack, so I think the deceased was controlled from the back and grabbed his hair. , Zhang Wannian's scalp showed signs of tearing off.

After being controlled, the murderer stabbed the dagger obliquely into the neck of the deceased. The dagger reached the seventh cervical vertebrae. Cut Zhang Wannian's neck horizontally.

According to these analyses, the murderer was right-handed, holding a dagger in his backhand. As for the hand that was scratched, it should be his left hand. After all, when Zhang Wannian was holding the dead man's hair or controlling his head, Zhang Wannian raised his hand and it was easy to catch it. The killer's fingers.

In addition, I also want to explain the details that I didn't consider before. Zhang Wannian is a patient with liver cancer, and now he has lung metastasis and coughing. He is better than Zhang Wannian in height, but not too tall.

After stabbing Zhang Wannian, the murderer did not dispose of the dagger, but pushed it down. It can be seen that he was in a panic at that time. He was able to conspire with Zhang Wannian to starve to death and dump Liu Xiangrui. flustered? "

In a word, the room was instantly quiet, and even the sound of the pen on the paper stopped. Liu Yongxin looked at Zhou Ning. His precious apprentice analyzed it very deeply. Indeed, the current evidence seems a bit inconsistent when put together.

He thought for a while, shook his head slightly and said:
"Our analysis is to consider the rationality, but the murderer kills, sometimes it is unreasonable, maybe it was interrupted by others, or when Zhang Wannian was assassinated, he was too emotional and exceeded his original plan, so he fled quickly."

Zhou Ning shook his head.

"It's not a quick escape. The two deceased have no documents, mobile phones, belongings, anything that can prove their identity information. There are only two empty hiking bags. Is this a deliberate inducement?
Let us all focus on our hiking bags. After all, all the connections between Zhang Wannian and Liu Xiangrui are in this outdoor sports club. "

After such an analysis, several people became energetic, and Zhu Xingxing counted with his fingers:
"Let's take stock, based on these analysis, we can conclude that the murderer is right-handed, young and strong, and there is an oval scar on the inside of the seam of the left finger near the joint. Anyone who finds this mark can be compared with DNA!"

Sun Gaotie said:
"The DNA shows that this third person has no blood relationship with Zhang Wannian and Liu Xiangrui. The family members can rule it out. Wouldn't the scope be wider?"

Da Zhao patted Sun Gaotie on the head, rolled his eyes and said:
"How is it possible that the scope of the search is getting bigger and bigger. Sister Fei has already gone to Huining. Find that vice president Sun Nan to check his hands and blood sample DNA. As for Zhang Wannian, everyone in the Dayao City company will check his hands. There is also November 11-December 26, the time period between is fine."