When Liu Jinghui began to apply for technical investigation intervention, Jiang Yuan began to study corpse No. 3.
Corpse No. 3 is more mutilated, with a missing head, fingers, and toes. Although the remaining parts can be used to determine basic items such as age, height, and gender, it is more difficult to get more accurate answers than Corpse No. 1.
Bigger.
Jiang Yuan studied corpse No. 1 for several days.
At his level, forensic anthropology is no longer as simple as using the pelvis to determine gender and long bones to determine height.
The sternum, spine and even clavicle can be used to determine age, height, gender and other information. These studies were originally designed to meet the needs of corpse dismemberment cases, but at a more advanced level, they are equivalent to six solutions to a question. Although six
Both solutions point to the same result, but the degree of refinement is definitely different.
If the question is big enough, it will be like one question with three small questions. It actually represents three different stages in the process of moving towards the same goal.
Using a variety of bones at the same time to make judgments will not only achieve higher accuracy, but also make it easier to obtain relevant information about the deceased.
In general, the more thorough the understanding of a bone, the more speculations can be made.
Corpse No. 3 is not good enough from all aspects. From the police's point of view, it is a very difficult corpse to solve.
The same is true for Jiang Yuan.
However, Jiang Yuan was stuck for only one day... Liu Jinghui first took out a table.
The intersection of time and space is already a very mature technology for technical investigation. Especially after responding to the epidemic, in the process of searching for various close connections, the technology has been improved and popularized very quickly. To put it bluntly, it is good and fast,
Not an exaggeration.
Related technologies, such as electronic fences, can sometimes even break through the boundaries of mobile phones and determine the time when a person passes a specific location. Coupled with surveillance, face recognition, gait recognition and other technologies, it can be easily found
A person with no countermeasures reconnaissance experience.
After reporting Jiang Yuan's name, it only took the technical detective half a day to give Liu Jinghui a list of 178 people who met the requirements.
Liu Jinghui sifted them down one by one, and when they were given to Jiang Yuan, there were still 67 people left.
"Xu Li doesn't come into contact with many people during normal working hours, but he occasionally comes to the front to put out goods. At this time, he comes into contact with more people." When Liu Jinghui told Jiang Yuan, he didn't feel embarrassed at all, and his expression was on the contrary.
It's quite exciting.
Deducing the real murderer from a bunch of suspects is what Sherlock Holmes does.
Especially when there is a gold-rimmed and glittering Watson with diamonds by his side, his reasoning becomes more energetic.
Liu Jinghui stroked the list with one hand and said, "I have a short-term plan and a long-term plan regarding the screening of this list."
Jiang Yuan waved to Wang Chuanxing in the corner of the office and asked him to record it, then nodded to Liu Jinghui.
Liu Jinghui said: "The long-term plan is very simple. By investigating the trajectories of the people on the list when the murder occurred, we should be able to eliminate most of them. The remaining people should be the key targets of investigation. If necessary, either
To refine the time of the crime, we can also investigate it from the perspective of the murder weapon and the crime scene."
Liu Jinghui continued confidently: "Short-term solutions are simpler. People's time away from mobile phones is very limited now, but since the murderer dared to provoke the police, he must be familiar with some of our case handling methods. I think he was murdering No. 1, No. 2 and
During these three time periods on the 3rd, it is very likely that you will be away from your mobile phone. Then let’s look at the list of people with relevant records, and maybe we can find something.”
Wang Chuanxing said at this time: "Isn't this list a list at the intersection of time and space? If he got away from his mobile phone... Oh, this list is a list at the intersection of time and space when the murderer observed and contacted Xu Li. When it was time to kill, he might not have brought his mobile phone?"
"That's pretty much what it means." Liu Jinghui nodded slightly and said, "The murderer may also have a second mobile phone, or he may not carry a mobile phone when he comes into contact with Xu Li, but these are difficult, and the murderer can easily make mistakes if he is not careful.
, it still has considerable investigative value.”
"Okay." Jiang Yuan doesn't need a 100% strategy.
If it is Xu Taining who is doing the investigation, then it really needs close to 100% guarantee. Because it costs too much, even in a provincial capital city like Changyang City, it is difficult to accept the money spent when Xu Taining is used. The case is not solved like this
ending.
As for whether it is reasonable or not, big directors who compare it with commercial films will understand. High-risk investments also allow you to have great autonomy, so you must use past results as an endorsement.
Then again, Liu Jinghui's plan doesn't need to be so elaborate. The investigation by dozens of people is not suitable to be described as "investigation", so just use investigation.
Even if Liu Jinghui wants to investigate more carefully, the quantity and difficulty can only be said to be ordinary work for the criminal police team.
With Jiang Yuan's approval, Liu Jinghui immediately commanded the criminal police.
This case is Ningtai County's own case, so it does not need permission and approval from the local police force like it does in other places.
Wu Junhao's explosion-proof patrol brigade and Liu Wenkai's criminal police brigade were gearing up for a long time. When Liu Jinghui assigned the task, they immediately started moving.
Wu Junhao's explosion-proof patrol brigade is really taking action. The long-term plan to implement is to ask everyone on the list and record their activities that day in the form of transcripts.
Liu Wenkai's criminal police brigade took a short-term route, first obtaining the results from the technical investigation, and then directly investigating the "key" suspects screened out. However, this investigation was more detailed. In addition to using technical means, criminal police officers were also dispatched to the door.
If the suspicion was not eliminated, people were sent to follow him.
The routes of both parties overlap slightly, and Liu Jinghui doesn't care, because the overlapping suspects themselves have a higher degree of suspicion. Investigating twice or changing people to investigate is also an investigation mode in itself.
In the next few days, the conference room in Building 9 remained brightly lit and busy.
The list of 67 people quickly dropped to 23 people, then 17 people, 12 people, 6 people, 3 people... until 0 people.
"Everyone's suspicions have been eliminated." Liu Jinghui did not consider this possibility at all, but the final result was still a bit beyond his expectation.
"Do you want to investigate the key suspects again?" Huang Qiangmin came over after receiving the news. He did not say any complaints or words of comfort, but directly expressed his support for Liu Jinghui.
Liu Jinghui was slightly moved, but slowly shook his head and said: "The investigation has been very careful. It doesn't make much sense to do it again. The suspects have been ruled out. Unless our clues are wrong, otherwise, the suspect is not with us."
Within the bounds of the frame.”
This is the most annoying type of investigation or investigation. You investigate a large number of suspects, only to find that the suspects have been eliminated. If you start over, it is equivalent to starting over.
Liu Jinghui pondered for a moment, looked at Jiang Yuan, and asked: "How about we start with corpse No. 3, determine the source of the corpse, and then look for common ground?"
"No. 3 is more difficult to deal with. If you want to determine the source of the body, you will have to conduct a large-scale investigation." Jiang Yuan had been studying the body of No. 3 for several days. He replied, and then said: "The identity of the body of No. 2 is already clear.
I can’t be contacted for the time being, so I’m afraid the result is the same on the 3rd.”
Jiang Yuan is currently working on his own case, and it is impossible to conduct a municipal investigation until the end of the road is reached.
Liu Jinghui had to admit that Watson, who owns gold-rimmed sparkling diamonds, was right.
Of the three corpses found so far, the first corpse is still the most valuable and can provide the most clues.
Compared with the last two corpses, the randomness of corpse No. 1 seems to be less strong - of course, this is also Liu Jinghui's reasoning at this time.
Liu Jinghui also frowned slightly and thought to himself, if there are no new clues, the reasoning will have to be more precise.
Jiang Yuan said at this time: "Maybe we can start with the murderer's skills."
"Knife-wielding skills?" Liu Jinghui reacted immediately, which is not uncommon in criminal investigation cases, and immediately asked: "Do you think the murderer has a medical background?"
"Well, he is very skilled in using knives. He either has a medical background or a forensic background, or he has been a butcher or a chef." Jiang Yuan paused and said: "Without three to five years of long-term practice, his technique of cutting up corpses
It can’t be that accurate.”
Cutting corpses is a typical practical behavior, and it cannot be learned by reading a book. Only by cutting a lot, the feeling of inserting the knife, and the cutting strength can you accurately control the smooth incisions on three corpses.
Liu Jinghui nodded lightly: "We previously assumed that the murderer and the suspect intersected in time and space. Now if this point is cancelled, I think the scope of suspicion can be broadened to include the victim Xu Li's work scenes and life scenes. The number of people can be divided into
more."
This is equivalent to a professional background investigation. Even if the number of people designated is very large, the time and labor costs will not be too high. Liu Jinghui turned around and got busy immediately.
Of course, after people with corresponding backgrounds are identified, further investigation by the criminal police is required.
At this time, a man named Bian Yizhang came into the sight of the task force.
"Bian Yizhang is the owner of a cigarette shop. He employs two employees on a long-term basis. His cigarette shop is only 50 meters away from the supermarket where Xu Li is. He has done private slaughter, worked as a joint defense officer, worked as a volunteer, and often participated in some social welfare activities. Since then.
According to the technical investigation's judgment, he often carries two mobile phones, and the mobile phones are often turned off or left behind."
If it weren't for the extensive investigation in the early stage, based on the information read by Wang Chuanxing, it can be said that Bian Yizhang is not suspected at all. Wu Junhao even talked to Bian Yizhang face to face.
However, as the investigation progresses, these seemingly ordinary identities and behaviors of Bian Yizhang shine like gold in the eyes of the members of the task force.
