Jiang Yuan came home from get off work early again.
There have been no corpses, no homicides, or even abnormal deaths in Ningtai County recently. Several areas in the city where cases often occur are also calm, and even missing electric cars rarely happen.
If it is a forensic doctor from another county, if there is no body, it will naturally be used by other criminal department personnel. If the demand of the criminal department is insufficient, it will naturally be used by other criminal police personnel.
Jiang Yuan had no such experience and understanding, and Huang Qiangmin and others had no such requirements for him. Everything seemed natural.
When I got home, I saw that a lot of information had been posted in the WeChat group.
"Qinghe Technology Sharing Group" has its own red dots.
Daily depression: [@水工. Thanks to Comrade Jiang Yuan for completing the key fingerprint comparison work. Thanks to all departments for their cooperation and dedication. The 1120 Maixin factory high fall case has been solved, and the murderer has been arrested! ]
Trace inspection Li Rui: [Awesome, it will be broken if you say it is broken!]
Forensic doctor Wang Lan: [Congratulations to Jiang Yuanyong for making a new contribution.]
Fighting in the south and in the north: [Jiang Yuan is good and a quick shooter.]
Trace Inspection Li Rui: [@南行北War, this word is easily ambiguous.]
Conquer the South and the North: [Within seven days, the distance is fast; beyond seven days, the distance is fast and accurate!]
A group of people were laughing and chatting happily.
Jiang Yuan pulled down to the bottom, and was about to return to his daily sluggishness, that is, Comrade Wan Baoming came today.
At this time, forensic doctor Wang Lan spoke again: [@dailyslump, what did Team Huang say? It should be hard to talk about.]
Daily sluggishness: [To be honest, Team Huang is quite awesome as a person and cooperative. We are ready to have further in-depth cooperation with them. 】
Forensic doctor Wang Lan: [Team Yellow? That’s awesome?”]
Daily sluggishness: [Captain Huang is actually a very simple person, as you will know after being in contact with him for a long time. Although his requirements are quite high, he actually has a certain rationality...]
When he said this, the crowd became cold.
No one objected to what he said, but certainly no one agreed with it.
Everyone has seen Huang Qiangmin, and some people have tasted his smile. Is that a pure smile?
At this time, Jiang Yuan spoke: [@dailyslump, that’s too polite, it’s what I should do.]
Daily sluggishness: [Haha, it’s amazing if you can do it. I look forward to future cooperation. 】
Jiang Yuan: [I am a little curious. You are not from Qinghe City, nor do you work in Qinghe City. How did you join the Qinghe City Technology Sharing Group? 】
Daily depression: [In the Lanzhou Beef Ramen Restaurant, there are neither Lanzhou people nor beef, so it’s not that prosperous. 】
Jiang Yuan thinks the key point lies in the word "mixed".
Thinking about it, Wan Baoming's working status is really a bit prosperous. In terms of position, he has become the deputy director of the Criminal Technology Center of Changyang City, the provincial capital. The level is not low and the conditions are good. In terms of specific operations,
He made Huang Qiangmin spit, which seemed to give Huang Qiangmin an advantage. In fact, he achieved his goal.
In these days, there are actually many criminal investigation experts, old and young. A famous criminal police officer with the title of criminal investigation expert of the ministry travels 250 days a year to solve cases all over the country.
Ou Guisheng, one of the Eight Tigers of Criminal Investigation, completed 200 cases a year and personally participated in solving 100 cases. He received an average of one first-class merit and two second-class merit every year.
But even so, there are still not enough criminal investigation experts. Moreover, scarce resources are not easy to obtain. It often requires coordination at the director level or even higher.
Wan Baoming is able to find external help at his own level, which is not a skill.
As for the little expense that Huang Qiangmin seemed to have earned, it was nothing compared to a murder case.
Jiang Yuan conducted a wave of analysis on Wanbaoming across the screen, and also increased his vigilance.
Fundamentally speaking, Wan Baoming is obviously not the one who will suffer losses. Therefore, if he is so active in reaching an agreement with Huang Qiangmin, the case that will be presented tomorrow will definitely not be simple.
Or maybe he has a very stressful case on his hands, but he just hasn't spoken out about it.
Jiang Yuan was not afraid of this, but he had dinner with his father early, played with the computer and mobile phone for a while, and went to bed before 11 o'clock.
For a young man of his age, going to bed an hour earlier than before 12 o'clock is a high level of respect.
The next day.
Jiang Yuan drove his Mercedes-Benz G directly to Changyang City.
Wan Baoming spent a lot of money to ask him to go to Changyang City to do the case. He would definitely not be too low-key. Otherwise, how would he calculate the expenses? How would he convince his colleagues and leaders.
Therefore, Jiang Yuan, who expected to be in the limelight, did not feel wronged and felt more comfortable without any scruples.
At about the same time, Wang Zhong, Mu Zhiyang and Wei Zhenguo drove the team's real old car, a Santana travel version with a glorious history of 15 years. The trunk was filled with various police equipment and multiple investigation boxes.
In fact, the latter can be provided by Changyang City, but Huang Qiangmin thinks it is unnecessary and will result in loss of status.
He sent two young men, Wang Zhong and Mu Zhiyang, to serve as Jiang Yuan's younger brothers. Of course, he couldn't speak so straightforwardly, so he only told Wei Zhenguo.
Wei Zhenguo naturally escorted Jiang Yuan. After all, it was a criminal case. No matter how good Wan Baoming said, someone still had to look after Jiang Yuan so that Huang Qiangmin could rest assured.
The process of cracking most criminal cases is very peaceful, just like fishing from a small pond. Fishing can be done in a normal way, and electrofishing can be used in more aggressive ways. If you have more people, you can fish. When you encounter something fishy,
When necessary, you can even release water to collect fish. Speaking of which, it seems to require some brains and more labor.
However, there are always some criminal cases with a very small probability that there is a certain degree of danger. The danger may come from poisonous snakes in the water, or it may come from accidents on the shore. The most terrifying thing is walking on the wrong surface of the water, walking from the pond.
nautical miles.
Huang Qiangmin has been a criminal policeman for decades, but he has never encountered any real danger.
But one thing is that he has been working in the county town all his life, and he is not very clear about the situation in the provincial capital. Furthermore, the cases he is invited to participate in are not too simple for the young people.
Huang Qiangmin was worried that Jiang Yuan would go directly to work.
The two cars met at the entrance of the expressway out of the city. Wei Zhenguo immediately transferred to the Mercedes-Benz G and ordered his apprentices Mu Zhiyang and Wang Zhong to drive safely.
Mu Zhiyang and Wang Zhong agreed, and Mu Zhiyang said obediently: "Master, don't worry, our car will shake when driving on the highway at 90. The body is hard and it is very safe."
"When the speed is over 70, don't open the window. The wind on the highway will not only chafe your face, but the wind noise is also loud. If you really want to open the window, just open the front passenger seat a little and open the right rear seat.
It will be better if you open a little gap." Wei Zhenguo informed the two of them of his experience, then got into the passenger seat of the Big G and adjusted the temperature to 20 degrees.
The sound of the air conditioner suddenly became louder, and the cool breeze blowing directly made Wei Zhenguo shiver and reveal a happy smile.
…
Changyang City.
Wanbaoming was waiting in front of the Municipal Criminal Science and Technology Center.
Several criminal police officers also came over specially and stood in front of Wan Baoming, observing Jiang Yuan and Wei Zhenguo as they walked off the big G.
Li Zhiyuan, the director of the center, wore regular clothes, a clean white shirt, and looked quite formal. After shaking hands with Jiang Yuan and Wei Zhenguo, he said: "If you need anything, just ask Lao Wan. If you really need it, ask me."
No problem. Hahaha..."
Li Zhiyuan said something and withdrew on the pretext of "there was a meeting to be held." The other criminal police officers just looked at Jiang Yuan and dispersed.
Wan Baoming took over Jiang Yuan and others, then blinked and said, "The white shirt feels different, right?"
"It's oppressive," Jiang Yuan told the truth. The directors of the Ningtai County Bureau all wear blue shirts, and ordinary criminal police officers don't see white shirts all year round.
However, the levels of provincial cities are different after all.
Jiang Yuan asked: "Does Director Li do technology?"
"I've done it before. And I'm also a forensic doctor." Wan Baoming himself was a forensic doctor. He looked at Jiang Yuan and smiled and said, "Forensic doctors are all ruthless people."
A few chats brought everyone closer together.
Wan Baoming looked at Wei Zhenguo again and said with a smile: "The provincial capital city is relatively large and the situation is more complicated. I won't go into details. We can just solve the case anyway. Do you think so?"
"Is there a cooperating criminal police team?" Wei Zhenguo asked.
"Captain Yu still trusts Jiang Yuan. If you need anything, you can come to me or go directly to Captain Yu." Wan Baoming said, and then explained: "Captain Yu has a meeting to hold and can't come over.
Well, he really has a meeting to hold."
Several people looked at each other and smiled.
Wan Baoming led the two of them into a small office and saw that it had been sorted out. There were two computers, a file cabinet, and an evidence cabinet with a small lock.
"Let's see what else is needed. I'll have someone move it here." Wan Baoming said.
"I need two camp beds. If not, an anatomy bed is fine." Jiang Yuandao: "Occasionally, I can take a rest in the office. It should be okay."
"Of course. However, we have a lot of camp beds, and we also have anatomy beds. If you forensic doctors have special hobbies..."
"That's not the case."
"That's good." Wan Baoming laughed: "I thought you were like our director, sleeping on the dissecting bed every once in a while."
Jiang Yuan was stunned for a moment: "Director Li still has this hobby?"
Wan Baoming said: "It is said that the cold anatomy bed helps thinking and dissipating heat. The reason why noble vampires sleep underground is because it is cooler underground, which can lower the brain temperature. The nobles have to review documents and the like, which is mental work in the Middle Ages.
Furthermore, because the dissection table is made of stainless steel, it can also remove moisture."
Jiang Yuan's brain temperature was overheated when he heard: "Is this what your Director Li said? Our forensic doctors are even more famous..."
"No, this is what everyone arranged for Director Li to say. It is no longer allowed to say this." Wan Baoming said solemnly: "This is what Director Li specifically emphasized during the meeting."
"Let's do the case." Wei Zhenguo couldn't listen anymore.
Seeing that both of them were relaxed, Wan Baoming smiled and asked, "Would Jiang Yuan be willing to do fingerprints?"
Jiang Yuan asked: "Are there any other cases?"
"What kind of case do you want?" Wan Baoming asked with a smile.
Jiang Yuan pondered briefly.
Jiang Yuan had actually considered which type of case to do.
Although fingerprints have considerable advantages, his fingerprint skills are also strong enough, as evidenced by the high-rise falling case that was solved just two days ago.
But the limitations of fingerprints are also very obvious.
In addition to factors such as fingerprint databases, the probative power of fingerprints is also a problem.
First of all, the fingerprint itself is indirect evidence. It can only prove that the suspect has been here, but cannot prove that the suspect participated in the case.
Secondly, the location and extraction method of fingerprints may be irregular, which makes the probative power of fingerprints questionable.
For a fingerprint, if it falls on the murder weapon, its probative power will definitely be first-class, and the suspect will basically be identified. But if it just falls on the murderer's vehicle, its probative power will be second-class.
At the first level, if you go to a crime scene, if it is a public space like a coffee shop, and there are so many fingerprints that can be taken out, you need external conditions to judge which fingerprint belongs to the suspect.
DNA and other things are actually similar. Why do the police like to look for semen spots so much? Why did forensic doctors know the properties of toilet paper so well? It's because normal people don't spread semen spots everywhere. If you find them, the proof will be very strong.
The Criminal Investigation Center in Changyang City is quite professional. They have a high level and cooperate a lot with experts from the provincial department. There is a high probability that the backlog of cases that have not been solved will be transferred to the provincial department.
In this case, the difficulty of fingerprints in Changyang City itself is relatively high, and the fingerprints they sent to the provincial department and found for consultation with experts were at least selected fingerprints with very high probative power.
Jiang Yuan is now sitting in the office of Changyang City Criminal Investigation Center. If he scans their fingerprints again, there is a high probability that he will find some fingerprints that are not very probative - specifically referring to murder cases.
But if the murder case is not solved, his appearance will be meaningless.
Even if he solves 100 theft cases, even if the theft cases are very difficult, they will not be taken seriously by the Changyang City Criminal Police Team.
They have many small cases that have not been solved, maybe they cannot be solved, maybe they have not invested resources, but in the eyes of the other party, these cases are all cases where "I can get full marks as long as I am careful".
Jiang Yuan came with one and only one mission, which was to detect murder cases.
It's not that fingerprints cannot be done, but as a good start, Jiang Yuan must use his strongest combat power.
The Qingdao-style single-finger fingerprint analysis method of LV4 + the Chongqing-style single-finger fingerprint analysis method of LV3 + the image enhancement of LV5 are also super powerful, but not as strong as the blood stain analysis of LV5 + the footprints of LV3 + the forensic clinical science of LV3.
Because fingerprints and pattern detection are both obvious sciences, bloodstain analysis + footprints are exactly the opposite.
Of course, in the Ningtai County Bureau, there may be no difference between fingerprint detection or footprints. In the past, Ningtai County was the strongest fingerprint detection, and Comrade Lao Yan's fingerprint skills were only LV0.9.
But in Changyang City, there are at least LV3 level fingerprint experts, and Jiang Yuan had seen them all during the fingerprint battle.
In terms of image detection, their highest combat power may only be LV2, but when doing fingerprints, their main strength must be fingerprint skills, and the image enhancement of LV5 can be regarded as a supplement.
Switch to bloodstain analysis + footprints.
These two skills were outstanding 20 years ago and were the specialty of the older generation of criminal investigation experts.
But now, these two skills cannot be said to have been lost, it can only be said that they are used less and less. Even if the master teaches his disciples, they will not be able to master them if there are not enough materials.
It means that if fingerprints are taken, Changyang City's criminal police team will be able to compete with Jiang Yuan's strength if they work as a team and ask experts for help. Normally, it may be a little worse, but in terms of murder cases, they won't lose too much.
And for the fingerprints they couldn't make, Jiang Yuan couldn't guarantee that they would be able to make them.
It can be replaced by blood stain analysis + footprints. The scene that they can't do may be a piece of cake for Jiang Yuan.
Equivalent to fingerprint + image enhancement, Jiang Yuan's score is 800. If the Changyang City Criminal Police Team forms the strongest team, it can score 700 or 750, or even reach 800.
But on the route of bloodstain analysis + footprints + forensic clinical practice, Jiang Yuan still scored 800 points. The Changyang City Criminal Police Team searched the entire province and formed the strongest team, which was only a little over 400 points, and the score was 500 points.
Although the detection of murder cases is not against one's own family, it makes sense to be at least better than one's own family in solving backlog cases.
Otherwise, if everyone has similar abilities and no current cases have been solved, how can you solve the backlog of cases?
If anything, there are relatively few cases of bloodstain analysis + footprints, otherwise it would not be possible to pass on the great masters.
But Jiang Yuan believes that in the huge city of Changyang, there are always some perverts who think they are unique, but they are actually the same perverts as other perverts.
"Let's see if you have such a case. There was a lot of blood and bloody footprints at the scene, and the scene was photographed very comprehensively." Jiang Yuan briefly described.
"There are not many such direct violent crimes nowadays." Wan Baoming said first and then asked, "Does Forensic Doctor Jiang have more experience in this type of case?"
"I will be more confident." Jiang Yuan said and walked towards the computer.
Wan Baoming smiled, walked over and turned on the phone, but said directly: "513 opens the door to poke the murder case. Do you want to take a look at this first?"
It goes without saying that the case that can be called out by name is both a serious case and a difficult case.
Jiang Yuan asked: "What is the specific situation?"
"Let me give you a brief introduction." Wan Baoming said: "On May 13th three years ago, the victim was an old man living alone in a local town. At that time, someone called to read the meter, and the old man opened the door. He was right in front of the door. There was no dispute.
He was stabbed in the chest with a knife. He died silently. When his body was discovered by a neighbor, he had been dead for more than an hour."
Wan Baoming looked at Jiang Yuan and Wei Zhenguo, who looked solemn, and said: "Footprints were extracted at the scene. There were a lot of blood stains and half a bloody footprint. However, because there were neighbors and others watching, the traces at the scene were also quite confusing. How about this case?
?”
"This case is too difficult." Wei Zhenguo had already shouted, fearing that Jiang Yuan would agree impulsively.
"Let's take a look at the photos of the scene first." Jiang Yuan stepped aside and let Wanbaoming open the intranet.
