Chapter 177 Basis of the case
"Jiang Yuan, what are you busy with?" Wang Zhong knew that Jiang Yuan was back and calculated that Wu Jun's superstitious ceremony was over, so he strolled over, looking like a civil servant with nothing to do.
Jiang Yuan said "Yes" and said, "I found a set of pictures to look at."
"Hey, a set of pictures?" Wang Zhong became more energetic, with a smile on his face: "I just said..."
He looked like a fellow man and moved behind Jiang Yuan's desk. On the big screen, he saw a door that was half-open, and there were bloodstains all over the light and dark. "I'm going" Wang Zhong almost jumped up
He's not someone who's afraid of being on the scene a few times. He's experienced everything that needs to be done. It’s just that the pictures don’t match expectations...
Wu Jun shook his head and glanced at Wang Zhong dissatisfied. The same young man, Wang Zhong is a few years older, but he just can't do things well. When it comes to business, they are all at the end of the queue. They don’t understand the traditional virtues of respecting the elderly and caring for the young, and they are very out of touch with what they say and do. "The backlog of cases from thirteen years ago." Jiang Yuan introduced it. Wu Jun on the other side of the desk heard this and couldn't help asking: "Which one?"
Jiang Yuan immediately realized that the backlog of murder cases thirteen years ago had all been handled by Wu Jun. Jiang Yuan immediately acted obediently and said:
He Jing and Matthew, there was a lot of blood at the crime scene. "I have the impression that some of the photos were taken by me." Wu Jun stood up and walked over. Standing behind Jiang Yuan, Wu Jun lit up another Chinese medicine, spit it out gently, and said: "You don't have to be mentally burdened. It's a good thing that you choose to do these murder cases now. If I am still here, maybe you can still remember it." Order something. Later, when I retreat, people from all over the country will go to the north and south to have fun. Where can you ask people?"
"I'll just call you when the time comes." Jiang Yuan grew up eating hundreds of meals in the village, so he still knows what to say.
Wu Junchang thought about his retirement life, nodded with satisfaction, and said, "That's okay. If the old lady doesn't let me smoke anymore, I'll say, I have to smoke if I want ions. Hey, I can get two or three cigarettes back." "
Jiang Yuan felt inexplicably sad when he heard this, and thought to himself: After all, Guan Erye smokes more cigarettes than you. After the chat ended, Jiang Yuan continued to swipe pictures one by one. If Wu Junjun said nothing, he would smoke. From time to time, his eyes would cross the smoke ring, as if he was thinking about something.
Wang Zhong is like a fool. He does trace examination, and he can also dabble in blood stain examination. However, there is a saying that blood stains have been learned to the level of lv1, which is the position of Mao Wan and so on. If it leaves the scene of the crime, it will basically not play any role.
Not to mention, Wang Zhong's bloodstain science is probably at level 3 - probably capable of distinguishing the obviously abnormal murderer's bloodstains. After he graduated from the police academy and took the joint entrance examination to join the army, the number of high-impact crimes he committed had become very small, and even fewer involved blood stains, so he had no place to study. In fact, nowadays, there is a surplus of talents in this field.
The supply of strike cases could not keep up. In the past, blood stain examinations were not successful. Occasionally, a case would occur where blood covered the floor. The blood stain experts from the municipal bureau and provincial department would rush over as if they had smelled something. There is no longer an environment for practicing like Wang Zhong. "There are bloody footprints here," Wang Zhong complained for a while, and finally he came up with something a bit evil. Jiang Yuan still said "original" and crossed the picture again. "Is it useless?" Wang Zhong asked.
"I don't know." Jiang Yuan breathed out and gave his master a cigarette, Wang Zhong a cigarette, and himself a cigarette. He firmly used his cigarette to resist the second-hand smoke. Wang Zhong took a sip and said, "If you don't know, you probably can't find anything in this footprint."
"It's been too long, and we can only make some basic judgments with this kind of featureless footprints." Jiang Yuan saw that Wang Zhong was interested, so he took out a notebook, opened a blank page and wrote while saying:
"The suspect is about 25 to 30 years old, male, with a height of 170 to 175 and a weight of 120 to 140. These are very ordinary values. What Jiang Yuan wrote is meaningless.
These values can be said to be the most common values for Chinese men. Of course, the average height of the current Jinian people has increased a lot, but not enough of them have entered the criminal market. Wang Zhong somewhat understood what Jiang Yuan meant. He nodded and said, "So, not much information can be extracted from the footprints." "Not necessarily." Jiang Yuan put down his pen and flipped through a dozen photos in a row. "You can see his gait here," he said. He found a few photos, which he had just picked out.
While letting Wang Zhong flip through the photos, Jiang Yuan recorded the numbers of the photos, then put down the pen and asked Wang Zhong, "Can you see anything?"
Wang Zhong looked confused, just like when he saw the bloody footprints.
Jiang Yuan intended to teach him some tips: "The most basic teaching of footprints, you memorize it. First, the outline of the distance, the wear of the hair near, the combination of measurement and observation..." Wang Zhongmo memorized. Silly look.
"Second. First of all, the size of the steps, the starting and landing of the feet, the shape of the feet is very important, search the four areas one by one, make good use of edge features, and don't forget to make comprehensive analysis." Jiang Yuan said that if he writes these two paragraphs in his notebook Come down and ask Wang Zhong again, "Do you remember?" Wang Zhong looked confused.
If he had a photographic memory, he would have taken off long ago.
Jiang Yuan then tore off the record page from the notebook where he had just written two paragraphs and handed it to Wang Zhongdao: "Go back and have a look." Hmm..." Wang Zhongmo read it over and asked in a low voice: "Four What are the four regions?”
"Referring to the toes, soles, arches and eyes of the feet." Jiang Yuandao said, "I've memorized it, and I'll take some photos and compare them with old cases. Put the experience of fingerprints to use, and you'll be able to practice it soon." Wang Zhong nodded repeatedly.
When Wu Jun saw that they had finished speaking, he put out his cigarette and asked, "What can you tell from their gait?"
"Mao could tell that this person had a good psychological quality." Jiang Yuan took out the picture just now and said, "Look at these few steps, the stride length has basically not changed." Wu Jun and Wang Zhong both looked at and nodded.
"There are still traces of dragging here." Jiang Yuan sighed, pointed to another picture, and said: "The murderer probably knocked the victim down. The victim was still struggling, so he dragged him to the rooftop. Even so, it was only one step. One step at a time." "Very calm."
"Yes, so it is very likely that he is a habitual criminal." Jiang Yuan wrote these two words in his notebook and said: "If I make a bolder guess, I think it is possible that he is a person who has been released from prison." Wu Jun is here now Tao Shen said, "What you said makes sense. Whether you have been in prison or not, your mentality is different. If the victim is still not anxious when he struggles and screams, then he has probably been in prison, and he has May have experience with violent crime."
"It's not necessarily a violent crime. Jiang Yuan slightly revised Wu Jun's words and said: "From the blood stains, I think it is more likely to be a sexual crime. ""Why do I remember that this girl was not sexually assaulted. "Wu Jun frowned.
Now that Mao Ruo has taken pictures of the scene, he can gradually recall the details of the case. Although 13 years ago was a long time ago, the murder left a very deep impression on people.
Jiang Yuan selected a few pictures, then sorted out the order, and said, "The central scene is a rooftop, but the victim cannot go to the rooftop voluntarily. Therefore, the murderer should use coercion and inducement from the beginning, at least to the fire door." He took out the knife." Wu Jun said "yes" and listened.
Jiang Yuan pointed to the blood stain and said: "If the purpose is to kill someone, since he took out the knife, he can just stab him. Going to the rooftop is actually not necessary. If he has had similar experiences, he should Knowing that, he went to the rooftop. The risk would be even greater. In addition, he also hugged and bumped each other to the rooftop. What was his purpose? "The purpose was to rape."
"Yes." Jiang Yuan said with certainty: "Moreover, it is very likely that there was an obscene act in the elevator. Because the girl lives in the middle room and went to the top floor, it must be the murderer."
"That makes sense."
"Also, I think the original purpose of the murderer may have been obscenity. Because the crime scene was in the victim's own building, this reason can also explain why he gave up the rape in the end. He should have felt the risk and finally gave up. Acts of rape.
Wu Jun did not insist on his opinion. In contrast, he still trusted Jiang Yuan's judgment more. Mao Jiangyuan had already sorted out his thoughts, and Wu Jun said decisively, "Your judgment is very important. I think there is a basis for restarting the case. Call Lao Huang."