civil forensic

Chapter 178 Case Basis
"Jiang Yuan, are you busy?" Wang Zhong knew that Jiang Yuan was back, and calculated that Wu Jun's superstitious ceremony should be over, so he strolled over, acting like a civil servant with nothing to do.

Jiang Yuan said "En" and said, "I found a set of pictures to look at."

"Hey, set of pictures?" Wang Zhong came to the spirit, with a smile all over his face: "I just said..."

He moved behind Jiang Yuan's desk with the appearance of a fellow man, and saw on the big screen that a door was half-open, and there were bloodstains all over the light and dark.

"I'll go!" Wang Zhong almost jumped up.

He wasn't afraid either, those who had been on the scene a few times had experienced everything they should have experienced.It's just that the picture is too inconsistent with expectations...

Wu Jun raised his head and glanced at Wang Zhong dissatisfied.He is also a young man, Wang Zhong is still a few years older, but he just can't do things.Let's talk about business, they are all at the end of the queue, and I don't understand the traditional virtues of respecting the old and loving the young, and they speak out of the way...

"Accumulated cases from 13 years ago." Jiang Yuan introduced a sentence.

Wu Jun at the other end of the desk heard it and couldn't help asking, "Which one?"

Jiang Yuan immediately realized that the backlog of homicide cases 13 years ago was properly handled by Wu Jun.

Jiang Yuan immediately pretended to be cute and said, "611 He Jingqin case, there are a lot of bloodstains at the crime scene..."

"I have the impression that some photos were taken by me." Wu Jun got up and walked over after speaking.

Standing behind Jiang Yuan, Wu Jun lit another Zhonghua, spit it out lightly, and said, "You don't need to have a psychological burden. It's a good thing that you choose to do these homicide cases now. While I'm still here, maybe you can still remember it." Order something. In the future, when I retire, the whole country is gone to play, where do you go to ask people?"

"I'll just call you when the time comes." Jiang Yuan grew up eating hundreds of meals in the village, so he can still say what he should say.

Wu Jun thought about his retirement life, nodded with satisfaction, and said, "That's fine. If the old woman won't let me smoke, I'll say, I have to smoke to think about the case. Hey, I can get back with two or three cigarettes. "

Jiang Yuan felt inexplicably sad when he heard it, and thought: Calculated in this way, Second Master Guan smokes more than you.

After the chat was over, Jiang Yuan continued to swipe pictures one by one.

Wu Jun watched without saying a word, just smoking, and from time to time, his eyes were still beyond the smoke ring, as if he was thinking about something.

Wang Zhong just looked at it stupidly.He does trace inspection, if you want to say that blood stain inspection can dabble a little bit, but, one thing to say, blood stains have learned to LV1 level, that is, to see where the splashes are, and leave the scene of the crime, basically can't play a role up.

Not to mention, Wang Zhong's bloodstain science is likely to be at the level of LV0.3—probably able to distinguish the obviously abnormal murderer's bloodstains.

After he graduated from the police academy and took the joint entrance examination to join the job, the number of violent crimes has been very small, even fewer involving blood stains, and there is nowhere to learn.

In fact, nowadays, there is a surplus of talents in this area.

The supply of violent cases can't keep up, and the blood trace inspection in the past didn't kill him. Occasionally, there was a case where the blood was all over the floor. The environment for Wang Zhong to exercise.

"There are bloody footprints here." Wang Zhong looked at it for a while, and finally saw something familiar.

Jiang Yuan still said "En", and crossed the picture again.

"Is it useless?" Wang Zhong asked.

"I don't know." Jiang Yuan exhaled, and then gave Master another cigarette, Wang Zhong a cigarette, and himself a cigarette, and used his mouth cigarette to resist second-hand smoke.

Wang Zhong took a deep breath and said, "If you don't even know, you probably won't find anything in this footprint."

"It's been too long. This kind of non-distinctive footprints can only make a basic judgment." Jiang Yuan saw that Wang Zhong was interested, so he pulled a notebook, opened a blank page, and wrote while saying:
“犯罪嫌疑人的年龄大约在25到30岁，男性，身高170到175，体重120到140。”

These are very common values.

What Jiang Yuan wrote was meaningless.

These values ​​can be said to be the most common values ​​for Chinese men.Of course, the average height of today's young people has increased a lot, but the number of them entering the criminal market is not enough.

Wang Zhong understood Jiang Yuan's meaning a little bit, nodded and said: "So, there is not much information to be extracted from the footprints."

"Not necessarily." Jiang Yuan put down his pen, flipped through more than a dozen photos in a row, and said, "You can see his gait here."

He found a few photos, which were also the ones he had just seen.

While letting Wang Zhong look through the photos by himself, Jiang Yuan recorded the numbers of these photos, then put down his pen, and asked Wang Zhong, "Did you see anything?"

Wang Zhong was bewildered, just like when he saw the bloody footprints.

Jiang Yuan wanted to teach him a little bit, so he said: "You memorize the most basic teaching of footprints. First, look at the outline from a distance, look at the wear and tear up close, combine measurement and observation..."

Wang Zhongmo recited.

Goofy look.

"Second. First look at the size of the footsteps, second look at the ups and downs of the feet, the shape of the feet is very important, look for the four areas one by one, make good use of the edge features, and don't forget the comprehensive analysis." Jiang Yuan said these two paragraphs in his notebook Write it down, and then ask Wang Zhong: "Do you remember?"

Wang Zhong was dumbfounded.

If he had a photographic memory, he would have taken off by himself.

Jiang Yuan then tore off the page for recording from the notebook where he had just written two paragraphs, handed it to Wang Zhong, and said, "Go back and have a look."

"Hmm..." Wang Zhongmo read it again, and asked in a low voice, "Which four areas are the four?"

"It refers to the toes, soles, arches and heels." Jiang Yuan said: "I know it by heart, look at some photos and compare old cases. Apply the fingerprint experience, and you will be able to practice it soon."

Wang Zhong nodded repeatedly.

Seeing that they had finished talking, Wu Jun twisted his cigarette and asked, "What do you see from the gait?"

"It can be seen that this person's psychological quality is quite good." Jiang Yuan dropped out the picture just now, and said, "Look at these few steps, the stride has basically not changed."

Both Wu Jun and Wang Zhong nodded.

"There are still traces of dragging here." Jiang Yuan sighed, pointed to another picture, and said: "The murderer should have knocked the victim down, and the victim was still struggling, so he dragged him to the roof. Step by step, with equal strides."

"Very calm."

"Yes, so, it is very likely that he is a habitual offender." Jiang Yuan wrote these two words in his notebook, and said: "If you make a bold guess, I think it may be a person who has been released after serving his sentence."

Wu Jun regained his energy now, and said, "What you said makes sense. Whether you have been in jail or not, your mentality is different. If the victim struggles and screams, he can take it easy. It is very likely that he has been in prison before." Prison, and may have experience with violent crimes."

"It's not necessarily a violent crime." Jiang Yuan corrected Wu Jun's words a little, and said: "Judging from the bloodstains, I think it is more likely to be a sexual crime."

"Why? I remember... this girl was not sexually assaulted." Wu Jun frowned.

Looking at the pictures of the scene now, he can gradually recall the details of the case. Although it was a long time ago 13 years ago, the murder case left a deep impression on people.

Jiang Yuan selected a few pictures, then sorted out the order, and said: "The center site is on the rooftop, but the victim can't go to the rooftop voluntarily, so the murderer should use threats and lures at the beginning, at least, go to the fire department At the position of the door, I took out a knife."

Wu Jun said "En" and listened.

Pointing at the bloodstain, Jiang Yuan said: "If the purpose is to kill people, since you have taken out the knife, you can just stab it directly. It is actually not necessary to go to the rooftop. If he has had similar experience, he should know , going to the rooftop, the risk will be even greater. In addition, he dragged the other party to the rooftop, what is the purpose?"

"The purpose is to rape?"

"Yes." Jiang Yuan said affirmatively: "Besides, it is very likely that there have been obscene acts in the elevator. Because the girl lives in the middle floor, the reason for going up to the top floor must be the murderer."

"Makes sense."

"Also, I think the murderer's original purpose may be obscenity. Because the crime scene was in the victim's own building, this reason can also explain why he finally gave up rape. He should still feel the risk, and finally Gave up the act of rape."

Wu Jun did not insist on his own opinion. In contrast, he still trusted Jiang Yuan's judgment more.

Seeing that Jiang Yuan had sorted out his thoughts, Wu Jun said decisively: "Your judgment is very important. I think there is already a basis for reopening the case. Call Lao Huang to come."

(End of this chapter)