National Forensic Doctor

early morning.

The reinforcements seconded from Ningtai County took a bus and arrived at the building of the Criminal Police Detachment of Zhengguang Bureau.

Under the blue sky and white clouds, the Zhengguang Bureau building is solemn and solemn, and its upright appearance is very atmospheric.

Wu Junhao and Liu Wenkai walked side by side, chatting relaxedly while looking at the building of the criminal police detachment.

“Although this Zhengguang Bureau building looks smaller than our new building, the shape is still quite good, especially the large yard. It’s not like our building. You can reach the roadside after passing a small parking lot. Yes." Liu Wenkai casually commented on the differences he saw.

Wu Junhao just smiled and said: "Our new building may also have a contribution from the Zhengguang Bureau. The two parties are considered related households. You can say something nice."

"I understand. When I was catching prostitutes in the past, some boys didn't even know the other person's real name, so they would point to their hair and shout, I paid for her hair, can we have nothing? That's the same idea." Liu Wenkai said. He looked quite serious.

Wu Junhao was amused and slapped Liu Wenkai's skinny little body: "I really miss you, kid."

It had been more than a month since he returned to the criminal police brigade. Wu Junhao was busy reorganizing the team, and he really didn't have time to have a good chat with Liu Wenkai.

Liu Wenkai took a breath when he was photographed, and said with great nostalgia: "Thank you, Wu Da, for your concern."

Wu Junhao was transferred back to the Ningtai County Criminal Police Brigade to be the captain of the first squadron, and was also given the position of deputy captain. Although it has no real meaning, it sounds good.

Although Wu Da doesn't really sound good.

"Just use the original title. Don't let others misunderstand you." Wu Junhao rubbed Liu Wenkai's shoulders.

Liu Wenkai bared his teeth and said: "I won't listen to any misunderstandings. Everyone in our team knows that Wu Da likes to treat everyone to sesame pancakes and meat."

"That's called Roujiamo."

"The one invited by Wu Da should naturally be called Shaobing. Just like the little girls hired by big companies to specialize in singing and dancing, they should be called a song and dance troupe."

…

meeting room.

Detachment leader Tao Lu held a meeting and introduced the reinforcements from Ningtai County to the policemen of the task force.

The police officers applauded hard for Jiang Yuan's sake.

The ones who applauded the hardest were naturally Qi Changye and his team members. If there is no one to help, this group of people will be exhausted, not to mention the mental pressure.

"Tell me about the case." Tao Lu didn't say too much nonsense.

The life of criminal police officers is very simple. In fact, it is a bit like soldiers who are constantly fighting. They are constantly going to the front line, occasionally coming back to repair, and from time to time fighting at night, fighting annihilation battles, breaking up engagements, chasing and escaping battles...

The communication before the war did not mean much. Friendships were all established on the front line.

Qi Changye coughed twice and said: "Let's talk about how we sorted out old cases first. The half-ton case is essentially a case of commercial espionage. The cause is that the source of the half-ton cargo does not match the registration. Subsequent investigation found that this A commercial espionage case was launched. After that, the case gradually became more complicated and began to involve other domestic and foreign organizations..."

"The restart of this case is based on the disappearance of a special agent..."

"The problem now is that we have re-interrogated the relevant persons involved, but we have not received any relevant information. This is a situation that is difficult to explain..."

Qi Changye finished speaking in one breath, then picked up the cup and drank water.

The technician from the Criminal Division Center who had done the on-site investigation began to introduce the situation at the scene.

After he finished speaking, Tao Lu naturally looked at Jiang Yuan.

Jiang Yuan smiled, first looked at Wu Junhao, Liu Wenkai and others, and said, "Team Team, Team Liu, do you have any ideas?"

"No." Wu Junhao replied immediately. In Ningtai County, he is not responsible for brain-eating.

Liu Wenkai coughed twice and said: "I have just come into contact with this case. I don't know what are the directions of our current investigation?"

"Our current investigation directions are as follows." Qi Changye, who is directly responsible for this case, stood up and said: "First of all, we are investigating the accessories of deceased No. 1, hoping to find the source of her accessories and determine her identity. .”

"Secondly, we are doing our best to investigate the clothes on several corpses. In addition, there may be textiles used in transporting the corpses in the corpse cave, and we are also asking the laboratory to test them."

"Third, there is the issue of transportation. The burial site is far away from the city. You must need transportation to get here. Because it has been so long, the video surveillance must be gone. We tried to collect the information at that time. Information about some illegal vehicles, in addition, we collected information about some vehicles involved, and also asked about some people involved, but nothing has been found in this direction yet."

"Fourth. Collection and comparison of DNA and other testing materials. We are collecting and expanding information on relevant personnel as much as possible, but there is no news yet."

Although he said a lot, Qi Changye felt a little decadent and a little strong when he said this.

From a police perspective, when the backlog of reopened cases reaches this level, the possibility of getting a good result is already relatively low.

In fact, if the normal backlog behaves like this, it should not be restarted.

Most of the backlog cases are like this.

Due to time constraints, information and evidence that were once easy to obtain are no longer available, and existing clues cannot and cannot be implemented...

It was the discovery of multiple corpses that forced Qi Changye to persevere.

To be precise, it forced Qi Changye and his colleagues to persevere.

At this time, many people focused their attention on Jiang Yuan.

Obviously, it is difficult to solve this case using ordinary thinking. This is not something that is difficult to judge. For any police station in any place, it is a difficult case to solve from digging up corpses from a few years ago in the wilderness.

Five more bodies than one would not make the case any easier to solve, it would just increase the pressure out of thin air.

Under the attention of everyone, Jiang Yuan sat up straight and said: "The dissection of the six corpses has been completed. Let me briefly explain the situation."

"Six corpses, a total of two female corpses and four male corpses."

"No. 1 and No. 3 are women. Corpse No. 1 died 8 years ago. There were many accessories on her body. She was about 22 years old and 1.7 meters tall. Zhan Gong is doing skull reconstruction on her, but it is estimated that it will take two or three people. It only takes months to make it possible.”

"No. 3 is also young, 23 and no more than 24 years old. He died about six years ago. There are remains of clothing in the tomb, but no match has been found yet. Two crowns have been made on the tooth, but the source has not been found."

"Among the four male corpses, the death time of No. 5 and No. 6 was more than five years ago, and the death time of No. 2 and No. 4 was also six years ago. Although it is not certain, judging from the time of death, except for the death of corpse No. 1, Eight years ago, the remaining five corpses died one after another five or six years ago."

"In terms of the manner of death, preliminary results indicate that sharp weapons are the main means of killing. There are currently four sharp weapons identified, which were used on No. 1, No. 3 and No. 4, and No. 5 and No. 6. No obvious injuries were found on No. 2. Sharp weapon marks..."

"Several corpses have old fractures, but none of them have internal fixations such as steel plates or nails."

Jiang Yuan then conducted career and life analysis on several corpses. That is to say, a simple analysis based on the skeletal condition and injuries of the corpse is not very in-depth.

Although forensic doctors can make some judgments on the impact of the bones based on the deceased's habits during his lifetime. For example, if he has tennis elbow, he may have hobbies of playing tennis, squash, and badminton, or his work may involve painting walls or sculpting sculptures. Something like that, or poor typing or writing posture...

It is okay to make some judgments based on the performance of different bones, but not all corpses can be positively judged.

Some people may not have liked sports, had no hobbies, did not work very much, and have not been injured or sick...

If such a person does not carry his ID card with his body, it will be very difficult to identify him.

There are other people who may have been injured, and may have even undergone surgery, but the injuries are not distinctive enough and there are no numbered internal fixations. They are also injured in vain, and it will not help them identify their bodies after death.

Tao Lu frowned when he heard this, and Qi Changye was even more disappointed and frowned deeply.

After a while, Qi Changye said: "If you put it this way, there is still a lack of breakthrough clues..."

"It's more difficult to solve this case in a relatively simple way." Jiang Yuan nodded in agreement.

Qi Changye nodded subconsciously, then realized something was wrong and asked, "Is there a complicated way?"

"Yeah. Let's have a few ideas. Let's discuss it and see which direction of investigation is more appropriate." Jiang Yuan opened his notebook and was about to start a lecture.

People in a conference room sat down subconsciously.

Only Cui Qishan couldn't help but said: "Which direction should we choose? Of course we are sending troops from all directions! We have checked every direction."

"It doesn't have to be like this at the beginning." Jiang Yuanxiao glanced at Cui Qishan, and then continued: "I'll talk about the first option first. Victim No. 3 has had two dental crowns installed, namely...the third one from the left and the fifth one from the left. , if she had her teeth installed in Beijing, there should be X-ray photos left, which can be used for comparison. In addition, she should have had two wisdom teeth removed, and the X-ray photos can also be found."

Qi Changye nodded: "Then we will visit all the clinics and hospitals in Beijing and look for X-rays that match these two dental crowns?"

"Well, the workload will be huge. We used a similar plan when we investigated the case before." Jiang Yuan said, pointing out the problem and said: "If the victim had his teeth done in other places, this plan would be a waste of manpower. ”

Qi Changye couldn't help but frown. It is possible that the trip will be in vain, which is indeed not easy to accept.

"The second plan is to trace it back from the dog's point of view. Lou Fengguo, who understands dogs... will tell you about this later." Jiang Yuan pointed to the back.

Lou Fengguo stood up and saluted, then sat down again.

"The third option is that I can give more detailed death times for several corpses, accurate to the month. One or two corpses may be accurate to the week, but the error is slightly larger. You can investigate from this aspect." Jiang Yuan himself He was reluctant to do so and spoke relatively quickly.

Qi Changye heard it and asked: "It's hard to determine the time, right? What are you going to do?"

Jiang Yuandao: "You can first use ultraviolet spectrophotometry to make a judgment. After measuring the value, use the regression equation to calculate the look-up table, but the error is very large. I personally prefer to use the relationship between microbial communities, and there are ready-made PMI predictions Model... But it requires grinding bone meal, and sample processing is also relatively cumbersome. The error of most samples is more than 34 days. If you are lucky, you can get a conclusion of one or two weeks of error..."

Qi Changye felt dizzy after hearing this, and simply asked: "Do you think this plan is feasible..."

"Let's put it aside for now."

"The fourth type is cranial reconstruction surgery. It takes a long time to wait. If I do it, I can do it in two or three weeks, which is considered fast. Moreover, it may not be successful."

"What about the fifth kind?" Qi Changye was elusive. When he had no clues, he was eager. Now that he has a little plan, he can't make a choice.

Jiang Yuandao: "The fifth option is similar to the first option, because most of the victims have fractures, and you can check the X-rays of the same location. For this, you only need to visit the hospital. Now the hospital's database is good, which is better than searching for The dental office is a little more relaxed.”

"Do you prefer the fifth option?" Qi Changye heard something.

Jiang Yuan smiled at Cui Qishan and said, "I think we can choose a few more investigation directions. I will follow the fifth one. How do you allocate the others?"

The thick tension dissipated instantly.