National Forensic Doctor

The next day.

early morning.

Liu Jinghui followed Jiang Yuan to Liu Chengming's residence, a container room on a construction site.

Compared with ordinary houses, this kind of house converted from containers is colder in winter and hotter in summer, and is smaller in area. Apart from the function of sleeping, there is basically no space for enjoyment.

Despite this, Liu Chengming's residence on the construction site is considered good. Because he is a skilled worker, he can live in a single room.

But for Jiang Yuan to investigate such a container room, it was boring. Even after careful inspection, he could not find any useful clues.

The accompanying technician packed up the equipment and said, "Captain Jiang, do you want to move the contents back and check again?"

This is purely to give Jiang Yuan face. Even if he were an ordinary expert, he would never even think about such an investigation. The work of the Criminal Division is also endless, and every unit is pressing for it. If too much manpower and time are wasted here, we have to find ways to make up for it elsewhere.

Jiang Yuan did not have such a strong appeal. He shook his head and said: "This is the temporary residence of the suspect. If you can't find evidence, consider other places."

"The suspect said he threw the knife into Dongxi Lake. Dai Zhi has organized people to search for it. However, Dongxi Lake is quite deep and there are underwater undercurrents. It may not be easy to find it." From the technician's statement From a perspective, finding the dagger used in the crime is the most important thing at the moment. After finding the knife, the vehicle used when the crime was committed, and the corresponding photos, the evidence chain of this case is relatively complete.

At this time, after a night of thinking, Liu Jinghui became more determined and said: "The credibility of Liu Chengming's confession is doubtful, and many testimonies cannot be falsified at present. At the very least, we have to find some objective evidence. As for the knife, They just go find it.”

Different from ordinary homicide cases, Liu Chengming burned the two victims to ashes, so that the police could not directly extract evidence from the victims, how they killed, what weapons were used, etc. They could only listen to Liu Chengming's confession. This is a model that Liu Jinghui dislikes very much. Naturally, he is unwilling to gain trust, let alone pay a huge price for it.

Jiang Yuan listened to Liu Jinghui's tone and asked, "Then what do you want to check?"

"Can I check whatever I want?" Liu Jinghui suddenly asked.

"Of course." Jiang Yuan replied affirmatively.

"I'm just thinking about it in my head, but I don't have any evidence in my hand." Liu Jinghui said.

"You haven't always been like this." Jiang Yuan glanced at Liu Jinghui strangely.

Liu Jinghui was suddenly moved. This is the meaning of the existence of the dragon knight. The dragon knight does not need any explanation. When the dragon gun points, the dragon will spray long flames and swoop away. How romantic this is.

The dragon knight controls the dragon, using his body as his body and his arms as his fingers, just like Watson under Sherlock Holmes.

"I think something is wrong with Liu Chengming. I have a key question. Was the skull of the male deceased burned away, or was the head cut off in advance?" Liu Jinghui asked.

Jiang Yuan had obviously considered this issue and said: "I think there is a high probability that it was cut off in advance. Although the possibility of burning to ashes cannot be completely ruled out, this is too difficult and requires a large amount of combustion accelerant, and it must be kept at It was burned in front of me. It was impossible to burn it to ashes in the open air. Judging from the final shape of the other bones, the skull of the male victim must have remained."

Liu Jinghui nodded: "If the murderer had been waiting and had time to take away the burned bone fragments from the male victim's skull, it stands to reason that he should have taken away all the other burned bone fragments. In this case, this case may not be solved. ”

"That requires bringing a large amount of accelerant, and you may not necessarily have to wait there for several hours. The disposal of the burned bone fragments is another problem. Bury it?"

"It's really possible that he cut off his head and buried it." Liu Jinghui expressed his thoughts and said: "I think we should give priority to finding the head. If the victim's head is found, it means that Liu Chengming lied, and he will be given a death sentence directly. . The specific facts of the case should also be clear.”

When a corpse is burned in a funeral parlor, diesel is sprayed from all sides to support the combustion, and at the same time, the body's grease is used to burn it as fully as possible. Even so, at the end of the burning, there will be a lot of lumpy bones left.

These bones are often smashed by the funeral home staff with hammers, and some of them are placed in the client's urn. It's impossible to put them all in. There are too many left, and ordinary urns don't have that much space.

Burning bones in the wild, even if diesel fuel is used to assist combustion, is unlikely to achieve such an effect. Most importantly, the skull is supposed to be the most resistant part to burning.

To completely burn it to ashes in such an environment, one needs to stand in front of it, repeatedly pour diesel, hit it with a hammer, etc. Only then can it be possible.

Obviously, if the murderer was willing to do this, he could have picked up all the burned bone fragments or disposed of them accordingly.

Analyzed from this perspective, Liu Chengming’s testimony is untrue.

This is also one of the reasons for Liu Jinghui's suspicion. As a murder suspect who has been arrested, since he has chosen to explain the problem, it is actually more cost-effective to give a comprehensive and accurate explanation. Because this is one of the grounds for mitigating punishment, it is possible to escape from the immediate execution of the death penalty.

Liu Chengming admitted the circumstances of the murder but failed to give a truthful and complete account. This is somewhat abnormal and shows that he must be hiding something from the police. He had little net worth and was not an official, which aroused Liu Jinghui's curiosity.

"There is another question." Liu Jinghui stood in the container room, his face slightly sweating, and said: "The suspect Liu Chengming was an excavator driver. He actually had the conditions to bury the body deep without much effort. Choosing to burn the body was actually a bit unnecessary."

"Maybe it's because the excavator is not easy to move around." The technician who had been standing next to him said at this time: "As far as I know. Many excavators now, especially those with bosses, have very detailed data monitoring inside. Some of them require passwords to start up, and the location and time of the excavator are all recorded clearly. The dynamics of the excavator bucket are also. If he secretly digs a pit to bury the body, the excavator will be The data on the machine can bury him. "

Liu Jinghui nodded slowly: "This is indeed a possible factor. However, Liu Chengming has been driving an excavator for so long, it should not be difficult to find another excavator, borrow one or even rent one..."

"But he still chose to burn the body."

"Burning the body has many advantages. If it is handled well, it is better than burying it with an excavator, and the traces are small. If it is not you, it should be difficult to determine the identity of the victim even if it is found. In addition, the excavator is relatively large after all. With such a big noise, people around can easily know it. It is not easy to go to the wilderness, and it is not convenient to carry the body at the same time. "

Several people listened to Liu Jinghui's clear talk and nodded.

At this time, Liu Jinghui said: "Let's check it out. Let someone ask people around Liu Chengming to see if he has borrowed or rented an excavator. Check his address book and WeChat records. If it is a normal rental, it should be this channel. "

"Yes." Wang Chuanxing saw that Liu Jinghui was sure, and immediately arranged it.

This form of inquiry is also a bit like investigation, but it is much simpler and cheaper. It belongs to the level of the police station or the criminal police brigade.

"As far as this case is concerned, we are actually a bit nitpicking. However, I think Liu Chengming has another case on his back. If we dig deeper, there will be a chance." Liu Jinghui said this in front of Jiang Yuan. If Dai Mingsheng was present, he would hesitate.

The technician next to him was helpless, silently took out his mobile phone, and began to send messages to the detachment leader.

Liu Jinghui watched him send messages, and then said to Wang Chuanxing: "Check the previous corpse burning cases to see if there are similar ones. You can try to combine the cases. This Liu Chengming is doing this, and if it is not done well, it will be path dependence."

Joining cases in parallel is the basic skill of criminal police. If the clues of one case are not enough, the clues of two cases are suddenly enough. And criminals who can concentrate on one case and not do a second case are few. Even murderers are no exception.

This thing is like gambling. If you can earn several years or decades of income by guessing the size once, who can stand the loneliness and work at ease? If killing one person can solve the contradiction that decades of income cannot solve, who can be patient enough to maintain the relationship?

After a few phone calls, the Lanyue City Criminal Police Detachment immediately took action.

Jiang Yuan put on his mask again and collected the evidence in the container room.

No matter what disturbances there are outside, the most basic technical work still needs to be done.

After the investigation in Liu Chengming's temporary residence was completed, Jiang Yuan walked around the construction site. After finding nothing else, he returned to the Criminal Police Detachment with Liu Jinghui, set up a hot pot, and waited for reports from all parties.

In the evening, new reports were sent in one after another.

"There are no new clues. However, the car used by Liu Chengming was found. He rented a car on Xianyu..." Wang Chuanxing gave Jiang Yuan and others a brief explanation.

Jian Louyuan also came over and said: "There are no clues about the excavator and the cremation of the body for the time being."

Liu Jinghui nodded slowly.

Wei Shijian squeezed out from behind his captain like toothpaste and said, "Could it be... Liu Chengming really has no old cases?"

If the leader is not willing to say something, let the person who cares least say it.

Liu Jinghui just smiled at him and said, "Did Liu Chengming give a complete account?"

"No." This time it was Jian Louyuan who answered.

It is extremely difficult to make a case coherent, especially when it comes to details. It is difficult to make a lie coherent.

And the suspect has no right to choose not to describe the details. If you don't answer obediently, it means you are not telling the truth.

"Then continue the trial." Liu Jinghui was not in a hurry at this time. He said to Jian Louyuan: "If you can't find the body burning, then you can list another project, whether there are unsolved murders of abandoned bodies or buried bodies at construction sites. In this way, you can directly check the construction sites where Liu Chengming has worked and the murders that occurred near the construction sites to see if there are any matches."

Jian Louyuan was quite confused: "Rabbits don't eat grass near their nests, not to mention that Liu Chengming burned the body so far away, would he kill people at the construction site?"

"Maybe it's because he didn't kill people smoothly at the construction site. People can't teach people, but things can teach people once." Liu Jinghui's brain was working fast, and he said: "Liu Chengming is an excavator driver and has worked at construction sites for half his life. In the end, he was forced to kill people and burn the body and hide the head. The whole process is too smooth. Let's check it first."