Chapter 783: Drawing a Murderer

"Find the case files and evidence for these few cases."

Jiang Yuan picked out a few cases and let Lei Xin find things. He has done a lot of cold cases now, and he has a different understanding of cases.

The difficulty of a cold case is not only reflected in the nature of the case and the type of evidence, but also in the completeness of the case evidence and whether the evidence is collected sufficiently.

It is not polite to say that some cold cases were ruined by some idiots. But facing such cold cases, you have no way at all.

The Qianjin District Criminal Police Team, Jiang Yuan is still familiar with it, and it is considered a top-level level in Qinghe City. However, for a team of this level, it is relatively difficult to completely eliminate the existence of idiots. Jiang Yuan asked Lei Xin to screen, also hoping to find a case that is relatively low in difficulty to solve, at least it looks like a case with relatively low difficulty.

As for actively looking for difficult cases to do, that belongs to not treating one's own cold case task force, the other criminal police team, and even hundreds of people in the police station as human beings—if there is political influence, it belongs to force majeure. If not, it is purely stupid.

Lei Xin took people and went straight to the file room and evidence room.

The cases of the Qianjin District Bureau are extremely numerous throughout the year, and their evidence room is naturally not as orderly as on TV. Of course, the hardware of the evidence room must be orderly, especially the large stainless steel cabinet in front, which even looks a bit handsome.

However, the evidence in the cabinet is a bit messy. "One case, one cabinet" is a very good system, provided that the increase in the number of cabinets can keep up with the increase in the number of cases.

If it can't keep up, the cabinet is full, so you can only find ways to stuff more.

Of course, cases that haven't been finished can still get extra treatment, but despite this, all kinds of evidence and files are still stuffed into the cabinet, making people distinguish for a while.

Lei Xin sorted it out very seriously, and he did it himself with gloves.

The apprentice followed and did it, and whispered: "Lei Da, you should rest for a while, we will call you to check after we figure it out."

"What are you resting for at this time." Lei Xin glared back and said: "We are not working for Jiang Yuan's case, we are working for our own case. Prepare the case well. If Jiang Yuan can solve it smoothly, maybe he can do a few more cases later. He is here, so he won't just do one case and leave."

Lei Xin thought clearly, he had no serial rape case to summon Jiang Yuan, so he had to take advantage of Jiang Yuan's presence and use him as much as possible.

In the basement, Lei Xin and others were working hard, while Jiang Yuan and others in the conference room were chatting in twos and threes.

Those who don't like to talk just hold a mobile phone and watch in the corner.

Jiang Yuan hasn't decided on a new case yet. The criminal police of the cold case task force at the scene are even more active, boldly analyzing the cases at hand, and asking Jiang Yuan to judge from time to time.

Li Jikuan felt itchy in his heart, and took advantage of the gap between several people talking, and suddenly came up with a sentence: "Team Leader Jiang, can you help me look at a case?"

"It's no problem to just look at the evidence involved in the case." Jiang Yuan usually helps people look at fingerprints and footprints in the group, but he certainly doesn't have time to handle cases in one-stop like in Qinghe City or Beijing.

Li Jikuan naturally didn't expect this either, and hurriedly said, "It's good enough to be able to see the evidence. Our special task force took on a current case five days ago, and we've been busy until today without any results. The people we came to arrest this time are also related suspects in that case."

"Are there footprints, fingerprints, or blood stains?" Jiang Yuan didn't even ask what case it was, and asked about the evidence part first.

Li Jikuan nodded hurriedly and said: "There are footprints, DNA, and blood stains."

Li Jikuan said and hurriedly entered the intranet from the computer, showed it to Jiang Yuan, and introduced: "This case, we analyze it should be a case of revenge, or a crime of passion. The victim is a small contractor who undertook the decoration work of a residential building in the residential area, and was moving angle grinders and other machinery that day, but was stabbed three times in the abdomen and died of excessive blood loss..."

When he spoke, Jiang Yuan also saw the photos of the crime scene.

The incident location was a stairwell in a residential area under decoration. The deceased fell on the stairs between the second and third floors, with his feet down and his head up, forming a large pool of blood under him.

The victim was stabbed three times in the abdomen, with traces of struggle, and should have crawled forward two steps. Beside him fell an angle grinder and a toolbox. His clothes were relatively clean, indicating that he had either not started work or had only started work for a short time.

Because it is a residential area under decoration, there is not a single camera in the residential area. The gate of the residential area has a camera that is working, but the access control of the residential area is not strict, and there is basically no restriction on entry and exit. During the decoration period, it is a mixed flow of people and vehicles, and its camera cannot capture the faces of people in the car at all.

The situation around the residential area is about the same. There are either farmland or large construction sites nearby. There is a village a few hundred meters away, but it is also a few hundred meters away, and there is no surveillance either.

Liu Jinghui was also curious, listening to the ear in the back, and happened to stand behind Jiang Yuan to look at the photos of the crime scene, and couldn't help but say: "Fortunately, it is not robbery and murder, otherwise, solving this case can only rely on fate."

Li Jikuan smiled bitterly: "Now it is also relying on fate. We checked the victim's relationship network, and didn't find the suspect. How should I say the victim? His work is decoration, and he has some disputes with the upper family and workers, but it hasn't reached the point of killing."

He was not so pessimistic before going out. At that time, the case was a fresh and hot murder case. The police of the task force were also full of confidence, but Li Jikuan went out for two days, and the case had already stepped from the 3-day gold to the 5-day silver.

At this time, there is still no suitable suspect, which is really a very dangerous signal.

Jiang Yuan understood Li Jikuan very well, no other reason, he saw too much.

Current murder cases are usually relatively ordinary, and the main force of murder has gradually transitioned from the 50s and 60s who are agile to the 70s and later. And this generation of young people is characterized by many ideas, very difficult to land, and emotions are particularly uncontrolled.

Just like the internet celebrity case Jiang Yuan did in Malaysia, the 15-year-old murderer, although he did a courier job that requires a lot of physical strength, his body is not strong, and he is even a bit unable to beat the young internet celebrity in his early 20s who exercises frequently. His temper is very explosive. If he can't borrow money, he wants to rob. If he can't rob, he looks for a knife...

Not only that, the 15-year-old boy who estimates that he rarely does housework, still fantasizes about wiping the large amount of blood clean—if he can do this easily, he might fantasize about dismembering or abandoning the corpse.

In fact, many perpetrators have had similar fantasies, but they didn't execute them, and most of them were defeated by reality.

If a normal person is stabbed in the artery or important blood-carrying organs, he can flow out more than 3,000 milliliters of blood, and more can have 4,000 or 5,000 milliliters. Moreover, the dead may have incontinence, so there may be hundreds of milliliters of urine mixed in, how difficult is it to try to clean up these blood? Just pour four 1.25-liter large bottles of cola on the ground and try to see if it can be wiped clean.

If a person with a little housework experience plans to kill and dismember the corpse, he cannot use such a killing method. At the very least, he must move the person to the bathtub and then cut the neck. This is like killing a pig with a basin, and don't do it like this. If you don't do it, the whole family will spend the New Year until the third day of the New Year to wash the courtyard.

The murder case at the decoration site in Jizhou doesn't feel complicated, but after several days of verification, there is no result, which makes people feel anxious.

Li Jikuan has just reached the stage of needing help, but not actively seeking help.

It will not be until a week later that the Jizhou police will really be anxious.

For such a case where everyone is invested, if it cannot be solved in a week, the probability of becoming a cold case is very large.

Jiang Yuan didn't mean to take over their case, just purely helping, looked at the blood stains at the crime scene, and then looked at the blood footprints left at the scene, and said: "This is fine, I will give you a range, you go to find someone to compare, and see if you can meet."

"Okay." Li Jikuan didn't realize what Jiang Yuan was going to do.

Wang Chuanxing, who was on the side, had already taken out his notebook, tried the pen, and put it in front of him.

"The murderer is 1.75 meters tall, male, well-proportioned and powerful, weighing 140 jin, the right leg is slightly longer than the left leg, this can be seen very clearly from his footprints, so there is a limp. In addition, left-handed, do you have any judgment on the murder weapon used?"

Jiang Yuan spoke relatively slowly, but Li Jikuan's brain turned slower.

At this time, there was only one thought in Li Jikuan's mind: A lame left-handed person, isn't it just asking someone, and the case is already solved?

Receiving Jiang Yuan's question, Li Jikuan thought for a while before reacting, and said: "It is said to be single-edged, about 30 centimeters long, pointed, with a small hand guard, suspected to be a bone-cutting knife."

The murderer stabbed three times, and the traces of the murder weapon were still relatively heavy. The forensic doctor can make corresponding analysis on the morphological characteristics of the murder weapon according to the victim's wounds.

Jiang Yuan nodded and said: "Your forensic doctor's front part is all correct. As for what kind of knife it is, I am more inclined to be a national knife, such as a Tibetan knife."

Jiang Yuan casually searched for a picture of a Tibetan knife from his mobile phone and showed it to Li Jikuan, and said: "I don't know if the knife management in your city is strict. If it is Qinghe City or Changyang City, carrying such a knife cannot pass the security check, so it is not easy to take a plane, and it is not easy to take a train, so ordinary people will not carry it with them, especially the sharpened one."

"So it is possible that it is a minority person?" Li Jikuan's brain finally turned: "They may have some national habits of using knives, or they just like to carry a knife on their body..."

Jiang Yuan nodded and said: "It is possible, but not certain. You can verify it after finding it later."

Li Jikuan nodded repeatedly, picked up his mobile phone, looked at Wang Chuanxing again, and whispered: "Team Wang, can I borrow a picture of the notebook? I'm afraid I'll say it wrong..."

Wang Chuanxing generously turned the notebook over.

Li Jikuan hurriedly took a picture, laughed twice, turned around and ran, feeling like he had obtained some secret book.

"Old Li ran so fast?"

Lei Xin came in from the outside and saw Li Jikuan's two legs pounding fast.

"Jiang Yuan just drew a murderer for him." Liu Jinghui also felt a little itchy, and asked: "How is your case investigation, is the evidence complete?"

"Uh, complete... all complete..." Lei Xin nodded and frowned, still thinking, what is called drawing a murderer? ===== CHAPTER 784 =====