Mystery Tracker 2

People who are used to mystery novels may fantasize about the life of a criminal police officer, thinking that criminal police solve a case just like a novel, and as long as a famous detective makes some reasoning, the truth of the case will be revealed.But the reality is often not as climaxing as the novel. In many cases, the detection of a case requires several days or even weeks of boring investigation by the investigators.In the next few days, the serious crime team and the forensic team went back and forth in such a cycle of "discovery-blood-drawing-comparison". Because of the large area of ​​the investigation area, the two groups were ready for a protracted battle, but To everyone's surprise, the breakthrough came much faster than they expected. On July 7, they found a matching blood sample in the fifth batch of test subjects! !

"According to the records, the blood sample is called Nie Yunquan, male, 45 years old, a villager in Caiqi Town, Yunxi County." Cheng Jinsong handed the material to Shen Yan, "We compared his blood with the suspect's twice, and the Y The -STR genotype matches the suspect perfectly, but the DNA does not match. In other words, the murderer is someone in the same paternal family as him, but not himself."

"Next, we will find out all the male members of his family, and then conduct further comparisons to gradually narrow the scope." Jiang Ruiheng said, "Of course, you can also cross-compare the male members of their family with the persons involved in the case. , Let's see who can find the murderer first."

Shen Yan nodded: "I think so too." He looked at Jiang Ruiheng and Cheng Jinsong, "Let's do this, let's try our best to identify all the members of this family, and then you two groups will continue to follow the DNA line. Narrowing down the scope, my side is still starting from the personnel involved in the case and the alibi, and we will advance at the same time to try to find the murderer as soon as possible."

"it is good!"

The news that the serious crime team has locked the family of the criminal suspect gave a boost to all the personnel involved in the investigation of the case. Everyone saw the dawn of the investigation of the case and became more motivated to work.Moreover, fortunately, the surname Nie is not particularly common, so as long as people with the surname Nie in the nearby area are likely to be from the same family.This gave the crime team great convenience.As a result, the preliminary statistical results came out quickly. The descendants of the Nie family were mainly distributed in Yunxi County and a total of 11 nearby villages, with a total of more than 2000 people.Although this number still sounds not small, it is already a huge breakthrough from the initial 60 to the current 2000.When the list of 2000 people was confirmed, everyone immediately divided into two groups according to the previous plan. One group returned to the traditional investigation mode under the leadership of Shen Yan, and investigated the two thousand suspects through cases; The team, led by Cheng Jinsong and Jiang Ruiheng, began to make a genetic map of the family, trying to further narrow down the range of suspects.

"According to the household registration files, the male population of the Nie family has a total of 2143 people," Shen Hao said as he tapped the keyboard, and several huge tree diagrams appeared on the screen instantly, "As far as all the information in the current household registration information is concerned, we They can probably be grouped into 11 family branches. Among them, the largest branch has 492 members, and the smallest one has 73 members. The names you see now are gray and have passed away. Among the rest, I Mark those who are younger than 10 years old and those who are older than 70 years old. If these people are removed, the remaining suspects should be 1803 people."

Cheng Jinsong stood in front of the screen, swiped the screen to look at the relationship of these personnel, he looked at it for a while, and asked Jiang Ruiheng beside him: "How is it?"

Jiang Ruiheng was also looking at this kinship table, and when Cheng Jinsong asked, he smiled and said: "Shen Hao has helped us do this, the next step is of course to take blood samples and continue to check! You are better at mathematics than me , you can do the sampling."

As soon as this remark came out, several people in the room laughed.Cheng Jinsong smiled and nodded to Jiang Ruiheng before looking at the screen.He scrolled through it for a while, and then said: "Shen Hao, take Nie Yunquan as the benchmark, and the upper and lower 10 years old as the generational difference, and draw people of the same generation as him."

Shen Hao operated according to the words, and soon, some names of people on the tree diagram were marked with a yellow background.

"Take them as a sample object, and take one person from each group of biological brothers as a sample, and if there are more than one person, it will be temporarily calculated as the eldest son."

Shen Hao continued to operate, and the number of yellow names disappeared instantly.Shen Hao glanced at the numbers in the corner of the screen, and said, "A total of 63 people."

"Find out the next generation of the sample subject again, or follow the principle just now, select one person from each group of biological brothers."

Shen Hao continued to operate, and this time the names of people with an orange background appeared on the screen, Shen Hao said: "This time there are 137 people."

"Exactly 200 people, that's a good number." Cheng Jinsong nodded, "Get out the list of 200 people, and we'll take a sample of these 200 people! Others prepare materials separately, and we will set off as soon as the list is confirmed!"

"Yes!"

At the end of the meeting, other people walked out of the office one after another and separated to prepare.Jiang Ruiheng said to Cheng Jinsong: "Should we tell Shen Yan about the blood collection this time?"

Cheng Jinsong understood Jiang Ruiheng's meaning. The target of their blood collection this time was closely related to the murderer, and there might even be the murderer himself among them. We must take precautions to prevent the murderer from absconding in fear of crime after hearing the news.So he nodded and said, "Go, let's go there."

The two came to the serious crime team on the fifth floor. As soon as they entered the office, they saw those people gathered together, and they seemed to be in a meeting.Seeing these two people coming at the same time, Shen Yan knew that there must be something wrong, so he asked, "What's the matter? Did you find something new?"

Cheng Jinsong nodded and explained their plan of action. "The two of us felt that there would be a lot of noise at the beginning of this matter, so we came here to say hello to you and see how we can avoid alarming the enemy."

The few people had just heard Cheng Jinsong finished the action plan, and they already understood the key point.Fang Liyuan suggested to Shen Yan: "Why don't we follow along and take a look at the alibi of these people?"

"We have to notify the local police and ask them to pay more attention to us." Shen Yan said, looking at his team members, "That's it, when the forensic team starts to operate, we will go there together and investigate these incidents by the way. The situation of the target. Everyone pay attention to the reactions of these people when the time comes, and if there are suspicious objects, don’t take it lightly. In addition, remember to contact the local police to strengthen the attention of these people and prevent the murderer from absconding.”

"it is good."

Shen Hao quickly sorted out the sampling list.In order to prevent some of them from being unable to sample, in addition to the target sample of 200 people, he also listed as many as 387 reserve personnel.While he was sorting out the list, the others were also making all the preparations to go to the countryside to collect blood.According to household registration information, the targets are mainly distributed in 5 villages, so everyone is also divided into five groups to start work at the same time.

Shen Yan and Cheng Jinsong went to Heling Village, where the target samples were most concentrated. Of the total 200 sampled objects, 62 were located in this village.Because they were accompanied by forensic doctor Xiao Wang, Cheng and Chen handed over the blood collection work to him, and the two of them called the head of the village to find out the basic situation of these people.

"There are quite a few people surnamed Nie in our village, and they are mainly descendants of Nie Hantang and Nie Hancheng. Mr. Nie Hantang has ten children, seven boys and three girls; Nie Hancheng also has eight children, five boys and three girls. The twelve Each of the brothers gave birth to three or four sons, adding up to almost fifty." Guan Village Head of Heling Village introduced.

"Then what do these people do?"

"The older generation is farming and working, and the younger generation is basically working outside. There are a few boys in the old Nie's family who are quite capable, and there is Nie Tangxing who opened a seed shop on the second job, and the business is doing very well. Big; Nie Tangqing, who owns a big share, opened a brick factory, and many people from Nie’s family worked in the brick factory; Son."

Hearing the introduction from Village Chief Guan, Shen Yan suddenly remembered that the guest house where the incident happened seemed to have been renovated half a year ago, so he asked: "You just said that some people in Nie's family were bricklayers, who are they? Where do you work?"

"Masonry?" Village Chief Guan thought for a while, "Nie Yuanji, Nie Yuanle... mainly Nie Tang and his boys."

"How are these people?"

"Nie Tanghe is a kind person, but sometimes he has a bit of a temper. The boys in his family, how should I put it, everything else is good, but they are a little bit fond of drinking, especially the second and youngest. After they drank too much, they quarreled because of New Year's greetings, and then they started fighting. At that time, they fought fiercely, and only three or five people pulled them away."

Shen Yan and Cheng Jinsong exchanged glances, and then Shen Yan asked: "Where does his family live?"

"Oh, at the other end of Daejeon, shall I lead you there?"

"it is good."

Nie Tanghe is 47 years old this year. There are four sons in his family, namely Nie Yuanxiang, Nie Yuanshun, Nie Yuanji, and Nie Yuanle. Except for the eldest Nie Yuanxiang who works in a small business in the town, the other three brothers are all bricklayers.Hearing that Shen Yan is from the Criminal Investigation Team of the Municipal Bureau, Nie Tanghe was surprised and also a bit on guard: "You asked me what happened to my children?"

"Three and a half months ago, a theft and homicide occurred in a nearby guest house. After our police investigation, we can confirm that one of the suspects is a man from your Nie family. Because the guest house was renovated before the incident, And your sons are all bricklayers, so I want to ask, where did your sons work three and a half months ago?"

While Shen Yan was speaking, Nie Tanghe's expression changed again and again.He frowned, and it took a while before he spoke: "My son and the others mainly work in the town. I don't know exactly which house they worked in three months ago. I have to ask them when they come back."

Shen Yan and Cheng Jinsong looked at each other—in the town?Heling Village is less than [-] kilometers away from Jingyun Town.

So, Shen Yan continued to ask calmly: "Three months ago, did any of your sons behave differently than usual? For example, did any of them suddenly make a fortune? Or, did anyone suddenly not go home and go out of town?"

Hearing these words, Nie Tanghe's brows tightened a little.He hesitated for a while, and finally made up his mind and said: "Comrade police, I have to ask my son to know what you said. Anyway, I, Nie Tang, and my son who believe in me, they may be a little bit hot-tempered, but It won’t be so irrelevant to murder and set fire. If someone of them did something illegal, I, the father, will be the first one not to let him go!”

Shen Yan noticed that Nie Tanghe's fists were clenched unconsciously when he said the last words, and he already had a secret calculation in his heart, so he said: "Okay. For the needs of handling the case, we need to conduct a blood test on you. You have no objection?"

"Okay, you guys smoke." Nie Tanghe said and stretched out his arms.

Shen Yan winked at Xiao Wang's forensic doctor, who immediately stepped forward and collected Nie Tanghe's blood sample.

"Okay, then we'll go back first. You can check with them when your son comes back at night. If you find any problems, you can contact our police." Shen Yan said, leaving his phone number to Nie Tang and , Then he looked at Nie Tanghe, and said seriously: "Brother Nie, we all hope that your son is not the person we are looking for, but if you really find something wrong with your son, I hope you can convince him to let him Take the initiative to surrender and don’t let him make the same mistakes again and again.”

"Who says my son is a bad guy?! You don't have any evidence to stop talking nonsense here! I'll give you blood too, you guys leave!" Nie Tanghe suddenly yelled furiously.

"Hey old Nie, what are you doing?! Comrade policemen are just making an analogy." Village Chief Guan criticized displeasedly.Shen Yan stopped Village Chief Guan and said to Nie Tanghe: "Okay, then we will leave first."

After leaving Nie's small courtyard, Village Chief Guan apologized to Shen Yan: "I'm sorry Captain Shen, old Nie has a bad temper, don't be as knowledgeable as him."

"It's okay." Shen Yan responded casually, but his eyes were winking at Cheng Jinsong.The latter had already understood Shen Yan's meaning, he put the test tube into the incubator, and walked quickly towards the car.