National Forensic Doctor

"Let's look for the files and evidence on these cases."

Jiang Yuan picked out a few cases and asked Lei Xin to find things. He now has more backlogged cases and has a different understanding of the cases.

The difficulty of a backlog of cases is not only reflected in the nature of the case and the type of evidence, but also depends on the completeness of the evidence in the case and the adequacy of the evidence collection.

To put it bluntly, some of the backlogged cases were destroyed by some idiots. But faced with such a backlog of cases, you still have nothing to do.

Jiang Yuan is familiar with the criminal police team in the forward area, and it is considered top-notch in Qinghe City. However, it is still difficult for a team of this level to completely eliminate the existence of idiots. Jiang Yuan asked Lei Xin to screen it, and it was also I hope to find a case that is relatively easy to solve, or at least seems to be relatively easy.

As for taking the initiative to find difficult cases, that means replacing the hundreds of people in our own backlog of cases, the other party's criminal police team, and even the police station. If there are political factors, then it is force majeure. If not, it is Pure stupidity.

Lei Xin led the people and went straight to the archives room and evidence room.

There are an extremely large number of cases in the Qianjin District Bureau all year round, and their evidence room is naturally not as organized as on TV. Of course, the hardware of the evidence room must be in order, especially the large stainless steel cabinet at the front, which even looks a bit handsome.

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

If you can't keep up, the cabinet is full, so you have to find a way to stuff more.

Of course, unfinished cases can still get extra treatment. Despite this, the cabinets are still full of various evidence files, which makes it difficult for people to sort through them.

Lei Xin took care of things very seriously and did it himself while wearing gloves.

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

"Why rest at this time?" Lei Xin glared back and said: "We are not working hard for Jiang Yuan's case, we are working hard for our own case. Prepare the case well. If Jiang Yuan can solve the case smoothly, Now, I might be able to do a few more cases later. He’s here even though he’s here, so he won’t just do one case and then leave.”

Lei Xin thought clearly in his heart that he no longer had a serial rape case to summon Jiang Yuan, so he had to use Jiang Yuan as much as possible while he was still around.

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

Some people don't like to talk, so they just hold a mobile phone and watch it in the corner.

Jiang Yuan has not yet decided on a new case. The several criminal policemen present on the backlog team are more active, boldly analyzing the cases at hand, and asking Jiang Yuan for judgment from time to time.

Li Jikuan felt itchy in his heart when he heard this. Taking advantage of the gap between several people talking, he suddenly said: "Captain Jiang, can you help me with a case?"

"It's okay if you just look at the evidence involved in the case." Jiang Yuan usually helps people in the group to look at fingerprints and footprints, but he definitely doesn't have time to handle cases in a one-stop manner like in Qinghe City or Beijing. .

Li Jikuan naturally did not expect this, and said hurriedly: "It would be good to see the evidence. Our task force took over a current case five days ago and has been busy until today with no results. What we came to arrest this time is also related. Those involved.”

"Are there any footprints, fingerprints or blood stains?" Jiang Yuan didn't even ask about the case, he just asked about the evidence first.

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

As he spoke, Li Jikuan quickly entered the intranet from his computer, showed it to Jiang Yuan, and introduced: "Our analysis of this case should be a case of revenge or a murder of passion. The victim was a small contractor who undertook a I was carrying an angle grinder and other machinery during renovation work for a residence in a community. I was stabbed three times and died of excessive blood loss..."

While he was talking, Jiang Yuan also saw photos of the scene involved in the case.

The incident took place in the stairwell of a residential complex that was being renovated. The deceased fell on the stairs between the second and third floors, with a large pool of blood forming on his feet, head and body.

The victim was stabbed three times in the abdomen. There were signs of struggle, and he should have crawled forward two steps. An angle grinder and a tool box fell beside him, and his clothes were relatively clean, indicating that either he hadn't started working yet, or he had only started working not long ago.

Because it is a community that is being renovated, there are no cameras inside the community. There is a working camera at the community gate, but the access control of the community is not strict, and there are basically no restrictions on entry and exit. During the renovation period, there is still a mixed flow of people and vehicles, and the camera cannot take pictures at all. Faces in the car.

The situation around the community is similar. A few hundred meters away is either farmland or a large construction site. There is a village nearby, but it is also a few hundred meters away, and there is no monitoring either.

Liu Jinghui was also curious and listened for a while. He stood back and watched Jiang Yuan look through the photos of the crime scene. He couldn't help but said: "Fortunately it wasn't robbery or murder. Otherwise, solving this case would have to rely on life."

Li Jikuan smiled bitterly: "Now we are relying on our lives. We checked the victim's relationship network and found no suspect. What did the victim say? His job was to do decoration, and he had some disputes with his family and workers, but he still had some disputes with his family and workers. Not to the point of killing people.”

He was not so pessimistic before he went out. At that time, the case was a fresh and hot murder case, and the police on the task force were also full of confidence. However, within two days of Li Jikuan's departure, the case had gone from a three-day golden case to a five-day case. The silver of heaven.

There is no suitable suspect at this time, which is really a very dangerous sign.

Jiang Yuan understood Li Jikuan very well. Without him, he had seen too much.

Nowadays, murder cases are usually relatively common. The main force of killings has been the highly skilled people born in the 1950s, 1960s, and gradually transitioned to those born in the 1970s and beyond. The young people of this generation mainly have many ideas, which are difficult to implement, and their emotions are particularly uncontrollable.

Just like the Malaysian Internet celebrity case that Jiang Yuan worked on, the murderer who was only 15 years old, although he was doing a very physical job like a courier, his body was not strong, and he was not even able to compete with a 20-year-old A young internet celebrity who works out regularly. But he still has a bad temper. If he can't borrow money, he wants to rob him. If he can't rob him, he will look for a knife...

Not only that, but the 15-year-old boy who probably rarely does housework also wanted to clean up the large amount of blood - if he could do this easily, he might fantasize about dismembering or abandoning the body.

In fact, many perpetrators have had similar fantasies. If they were not carried out, most of them were defeated by reality.

If a normal person is poked in an artery or important blood supply organ, more than 3,000 ml of blood can flow out, and as much as 4,000 to 5,000 ml. Moreover, dead people may be incontinent, so hundreds of milliliters of more urine may be mixed into it. How difficult would it be to try to clean up this blood? Pour four large 25-liter bottles of Coke onto the floor and see if they can be wiped clean.

People with a little bit of housework experience should not use this method of killing if they plan to kill and dismember the body. At the very least, they have to move the person to the bathtub and then cut the neck. This is like killing a pig and holding it in a basin. Let's do this. From the Chinese New Year to the third day of the Lunar New Year, the whole family will use it to wash the yard.

The murder case at a decoration construction site in Jeju seems not complicated, but after several days of investigation, there is no result, which makes people anxious.

Li Jikuan has just reached the stage where he needs help but has not yet actively sought help.

The Jeju police will not really get anxious until the case cannot be solved for a week.

If this kind of case, in which everyone is fully involved, cannot be solved within a week, the probability of it becoming a backlog is very high.

Jiang Yuan had no intention of taking over their case, he just wanted to help. He looked at the blood stains at the crime scene, then looked at the bloody footprints left at the scene, and said: "That's good, I'll give you a range, 豼Go find someone to compare with and see if you can meet him."

"Okay." Li Jikuan hadn't realized yet what Jiang Yuan was going to do.

Wang Chuanxing next to him had already taken out his notebook, tried the pen, and placed it in front of him.

"The murderer is 1.75 meters tall, male, well-proportioned and powerful, weighing 140 pounds. His right leg is slightly longer than his left leg. This can be clearly seen from his footprints. It is about two centimeters longer, so he is lame. In addition, do you have any judgment about the murder weapon used for being left-handed?"

Jiang Yuan spoke slowly, but Li Jikuan's mind moved even slower.

At this time, Li Jikuan had only one thought in his mind: Lame left-hander, wouldn't the case have been solved just by asking someone?

After receiving Jiang Yuan's question, Li Jikuan thought for a while before reacting and said: "It's a single-edged knife, about 30 centimeters long, with a pointed end and a small hand guard. It seems to be like a boning knife."

The murderer stabbed him three times, but the traces of the murder weapon left behind were quite heavy. Forensic doctors can make corresponding analyzes on the morphological characteristics of the murder weapon based on the wounds of the deceased.

Jiang Yuan nodded and said: "The first part of what your forensic doctor said is correct. As for the specific knife, I prefer it to be a national knife, such as a Tibetan knife."

Jiang Yuan randomly searched a picture of a hidden 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. In Qinghe City or Changyang City, you can't pass the security inspection with such a knife, so You can’t fly or take a train, so most people won’t carry it with them, especially sharpened ones.”

"So maybe they are from ethnic minorities?" Li Jikuan's mind finally turned around: "They may have some ethnic habits that require the use of knives, or they like to carry a knife with them..."

Jiang Yuan nodded and said: "It's possible, but I'm not sure. I can verify it if I find it later."

Li Jikuan nodded repeatedly, picked up the phone, looked at Wang Chuanxing again, and whispered: "Team Wang, lend us a note to take a photo of, I'm afraid I made a mistake..."

Wang Chuanxing handed over the notes generously.

Li Jikuan hurriedly took a photo, laughed twice, turned around and ran away, as if he had learned some secret.

"Lao Li ran so fast?"

When Lei Xin came in from outside, he saw Li Jikuan's legs moving very fast.

"Jiang Yuan just described a murderer for him." Liu Jinghui also felt a little itchy and asked: "How was the investigation of your case? Are all the evidences and everything?"

"Uh, all... all..." Lei Xin nodded and frowned, still thinking, what does it mean to describe a murderer?