Chapter 735

Early morning.

The reinforcements seconded from Ningtai County took a bus to the building of the Criminal Police Detachment of the Zheng Guang Bureau.

Under the blue sky and white clouds, the building of the Zheng Guang Bureau was solemn and solemn, and its upright appearance was very atmospheric.

Wu Junhao and Liu Wenkai walked side by side, looking at the building of the Criminal Police Detachment while chatting easily.

"This building of the Zheng Guang Bureau, although it looks smaller than our new building, its shape is still quite good, especially the area of the courtyard is large, not like our building, where you reach the roadside after passing a small parking lot." Liu Wenkai commented casually on the differences he saw.

Wu Junhao just smiled and said: "Our new building, it is possible that it also has a share of the Zheng Guang Bureau. The two sides can be considered related households, so say something nice."

"Understand. When I was catching prostitution before, some kids didn't even know the other party's real name, just pointed at the hair and shouted, 'She did this hair, I paid for it, can we have no relationship?' Same meaning." Liu Wenkai said very seriously.

Wu Junhao was amused and slapped Liu Wenkai on his thin, dry little body: "I really miss you kid."

It was only a month since he returned to the Criminal Police Brigade. Wu Junhao was busy rectifying the team and really didn't have time to chat with Liu Wenkai properly.

Liu Wenkai took a breath of cold air after being slapped and said with nostalgia: "Thank you, Brigade Wu, for your concern."

Wu Junhao was transferred back to the Ningtai County Criminal Police Brigade as the captain of the First Squadron, and was also given the position of deputy brigade leader. Although it had no substantive meaning, it sounded good.

Although Brigade Wu didn't really sound good.

"Just use the original address. Don't let people hear it wrong." Wu Junhao rubbed Liu Wenkai's shoulder.

Liu Wenkai grinned: "It won't be heard wrong. Who in our brigade doesn't know that Brigade Wu likes to treat everyone to sesame seed cakes with meat the most."

"That's called meat sandwich."

"What Brigade Wu treats, naturally it should be called sesame seed cake. Just like the little girls hired to sing and dance in big companies, they should be called song and dance troupes."

Conference room.

Detachment Leader Tao Lu held a meeting and introduced the reinforcements from Ningtai County to the police officers of the special case team.

The police officers tried their best to applaud for Jiang Yuan's sake.

The most diligent applause naturally came from Qi Changye and his brigade members. If no one helped, not to mention the mental pressure of this group of people, they would be exhausted soon.

"Let's talk about the situation of the case." Tao Lu didn't say too much nonsense.

The life of criminal police is very simple. In fact, it is a bit like soldiers who are constantly fighting, constantly marching to the front line, occasionally returning to repair, fighting night battles from time to time, fighting annihilation battles, fighting breakthrough battles, fighting pursuit battles...

Pre-war social interaction doesn't have much meaning; friendships are all established on the front line.

Qi Changye coughed twice and said: "Let's talk about the situation of our combing through old cases. The Half-Ton Case is essentially a case of commercial espionage. Its cause is that the source of half a ton of goods does not match the registration. Subsequent investigations found that after this commercial espionage case, the case became increasingly complex, starting to involve some other organizations at home and abroad..."

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

"The problem now is that we have re-interrogated the relevant people involved, but we haven't obtained useful information. This is a situation that is relatively difficult to explain..."

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

The technician from the Criminal Science Center who had conducted 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: "Brigade Wu, Brigade Liu, do you have any thoughts?"

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

Liu Wenkai coughed twice and said: "I have also just come into contact with this case. I don't know what directions we are currently investigating?"

"Our current investigation directions are these few." Qi Changye is the person directly responsible for this case, stood up and threw out a brick to attract jade: "First, we are investigating the accessories of the No. 1 deceased, hoping to find the source of her accessories and determine her identity."

"Secondly, we are also investigating the clothing on several corpses as much as possible. In addition, there may be textiles used when transporting corpses in the corpse pit, which are also being tested by the laboratory."

"Third, the issue of transportation. The burial site is far from the urban area. To come here, there must be transportation. Because the time interval is long, there must be no video surveillance. We tried to collect information on some traffic violations at that time. In addition, we collected information on some vehicles involved in the case and asked about the situation of some people involved in the case. However, this direction has not been discovered yet."

"Fourth. Collection and comparison of DNA and other inspection materials. We are collecting and expanding information on relevant personnel as much as possible, and there is no news for the time being."

Although he said a lot, Qi Changye was a bit decadent when he said this, and a bit small and strong.

From the perspective of the police, the possibility of getting good results from a restarted cold case that has reached this level is already relatively low.

In fact, if a normal cold case has such a performance, it should not be restarted.

Most cold cases are like this.

Because of time, the information and evidence that were easy to obtain in the past cannot be obtained, and the existing clues cannot be implemented...

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

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

At this time, many people focused on Jiang Yuan.

Obviously, it is already very difficult to solve this case with ordinary ideas. This is not a difficult thing to judge. For any police station in any place, digging up corpses from a few years ago from the wilderness is a case that is very difficult to solve.

Five more than one corpse won't make the case easier to solve; it just increases the pressure out of thin air.

Under the attention of everyone, Jiang Yuan sat up straight and said: "Six corpses have been dissected. Let me briefly talk about the situation first."

"Six corpses, there are two female corpses and four male corpses."

"No. 1 and No. 3 are female. The time of death of the No. 1 corpse is about 8 years ago. There are many accessories on the body, and the age is about 22 years old. Height is 1.7 meters. Zhan Kan is doing skull restoration for her, but it is estimated that it will take two or three months to do it."

"No. 3 is also not old, 23 years old, not more than 24 years old. The time of death is about six years. There are clothing residues in the grave, and no match has been found for the time being. The teeth have two crowns, but no source has been found."

"Among the four male corpses. The time of death of No. 5 and No. 6 is more than five years ago, and the time of death of No. 2 and No. 4 is also more than six years ago. Although it cannot be determined, from the time of death, except for the No. 1 corpse who died 8 years ago, the remaining five corpses died one after another five or six years ago."

"In terms of the method of death, initially, it is mainly sharp weapon killing. Currently, there are four sharp weapons identified, which are used on No. 1, No. 3, No. 4, No. 5, and No. 6. No obvious sharp weapon traces were found on No. 2..."

"Several corpses have old fractures, but none have internal fixation objects such as steel plates or iron nails installed."

Jiang Yuan then made a career and life analysis for several corpses. That is, a simple analysis based on the bone situation and injury situation of the corpse, which is not very deep.

Although it is said that forensic experts can make some judgments based on the habits of the deceased before death and their influence on the bones, for example, those with tennis elbow can be considered to have hobbies such as tennis, squash, badminton, or their work content is wall painting, sculpture, etc., or their posture of typing or writing is not good...

It is no problem to make some judgments based on the performance of different bones, but not all corpses can get positive judgments.

Some people, they may not love sports, have no hobbies, don't work much, and have never been injured or sick before death...

If this kind of person doesn't carry an ID card with the corpse, the difficulty of identifying the identity is very high.

There are also people who may have been injured, and may even have had surgery, but the injury is not characteristic enough, and there is no internal fixation object with a number, which is also a white injury, and the help to identify the corpse after death is minimal.

Tao Lu frowned as he listened, and Qi Changye was even more disappointed, his brows deeply wrinkled.

After a long time, Qi Changye said: "In this way, it is still lacking breakthrough clues..."

"It is difficult to solve this case relatively simply." Jiang Yuan nodded in agreement.

Qi Changye subconsciously wanted to nod, but realized something was wrong in an instant and asked: "Are there complex methods?"

"Hmm. There are a few ideas. Let's discuss and see which investigation direction is more suitable." Jiang Yuan opened his notebook, looking like he was about to start speaking.

A conference room of people sat down subconsciously.

Only Cui Qishan couldn't help but say: "Do we still need to choose which direction? Of course, it's ten-sided attack! Check every direction."

"No need to be like this at the beginning." Jiang Yuan smiled at Cui Qishan and continued: "Let me talk about the first plan. The No. 3 victim had two crowns installed, which are... left 3 and left 5. 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 extracted, which can also be used to find X-ray photos."

Qi Changye nodded: "Then visit all the clinics and hospitals in Beijing to find X-ray films that match these two crowns?"

"Hmm, the workload will be very large. We used similar plans when we investigated cases before." Jiang Yuan said, and pointed out the problem: "If the victim had her teeth done in another place, this plan will waste manpower."

Qi Changye couldn't help frowning. It is possible to run for nothing, which is indeed not easy to accept.

"The second plan, trace from the perspective of the dog. Let Lou Fengguo, who understands dogs... tell everyone about this in a while." Jiang Yuan pointed to the back.

Lou Fengguo stood up and saluted, then sat down.

"The third plan, I can give more detailed time of death for several corpses, accurate to the month. One or two corpses may be accurate to the week, but the error is slightly larger, so you can investigate from this aspect." Jiang Yuan himself was reluctant to do so, and said it relatively quickly.

Qi Changye heard it, asked: "Is this time not easy to determine? How are you going to do it?"

Jiang Yuan said: "This can be determined by ultraviolet spectrophotometry first. After measuring the value, use the regression equation to check the table, but the error is large. I personally tend to use the relationship of microbial communities. There are ready-made PMI prediction models... but bone powder needs to be ground, and sample processing is also very cumbersome. Most samples have an error of more than 34 days. If you are lucky, you can get a conclusion with an error of one or two weeks..."

Qi Changye felt dizzy and simply asked: "Do you think the feasibility of this plan..."

"Let's shelve it for now."

"The fourth type is skull restoration. This will take a long time to wait. If I do it, it will be fast if I can do one in two or three weeks. And it may not be matched."

"What about the fifth type?" Qi Changye was indecisive. When there were no clues, he longed for them. Now that there were a few plans, he was also difficult to choose.

Jiang Yuan said: "The fifth type is similar to the first plan. Because the victims have many fractures, you can check the X-ray films of the same position. This only needs to visit the hospital. Now the hospital's database is good, which is easier than finding a dental clinic."

"You tend to the fifth plan?" Qi Changye heard some of it.

Jiang Yuan smiled at Cui Qishan and said: "I think we can choose a few more investigation directions. I will follow the fifth one myself. As for the others, you see how to allocate them?"

A thick sense of tension instantly dispersed.