At 6:23 pm, the conference room of the Criminal Police Squadron 3 of Yandong Public Security Bureau was shrouded in smoke.

After checking for a day, there was no clue. The leaders and the criminal police who participated in the second case analysis meeting looked solemn. Xi Da looked back at the deputy captain of the criminal police detachment who came to guide the investigation and lit a cigarette.

The scene was investigated last night, and the team led the team to the technical squadron leader Lin Xiaopeng, who had been inspected on site early this morning, peeked at the two leaders, held the notebook and continued: "After another investigation, it can be determined that multiple people committed the crime, and it was a planned and premeditated crime. After entering the room, they controlled the adults and children at the same time, and took the adults to the room on the left side of the first floor with good sound insulation for torture.

The female victim had 24 bruises, four abrasions, severely hit on her face, three broken ribs, and cruelly tortured before her death. Logically speaking, the murderer should have left many traces, but the scene was very clean, no fingerprints were extracted, and no footprints were found. Fortunately, the victim had resisted and bitten the murderer, which allowed us to extract the DNA of one of the suspects from the mouth of the female victim."

"So the living room is not the first scene."

"No, the bedroom on the left is."

Lin Xiaopeng handed over a stack of photos, turned around and walked to the white blackboard, pointing to the topographic map drawn with water strokes: "We found many bloodstains here, here, and here, there, there were more bloodstains from here to the living room. It can be seen from the distribution of the blood that the victim was dragged to the living room. The murderer should have finished killing the person and clearing the scene and then rummaged through the cabinets and disguised the scene, trying to mislead our investigation direction."

"How did the murderer clean up the scene?" asked Deputy Captain He.

"The local materials were used. Almost all the things in the bathroom of the deceased were used. We found a large piece of blood in the washbasin, toilet and shower room, but we didn't find anything like mops and rags. The murderer should have taken the things away after cleaning and disguising the scene."

"Have you looked for it near the crime scene?"

"I have searched for it, but there are no trash cans or dead corners nearby, and no blood is found."

To say that throwing it farther shows that the murderer has a certain sense of anti-reconnaissance, which shows that the murderer is very cunning.

Xi Hongbo looked at the photos again and looked up and said, "Where is the child?"

"The strangled death is less painful than the female victim, at least I have not suffered much torture."

"Will the judgment of the death period be wrong?"

"No, Director Liu has been to the scene in person and participated in the autopsy. Director Liu also believes that the death of Zhang Qiuyan and his son should be between 7:00 and 10:30 pm on the 15th."

The judgment made by the director of the Forensic Inspection and Appraisal Center of the Municipal Bureau should be fine. Xi Hongbo nodded slightly and signaled him to sit down while saying coldly: "Comrades, the technical department has done a lot of work, found many clues, and even mastered the DNA of one of the suspects. Next, let's look at the investigation. Xu Wei, come first and tell me your opinion."

"Xi Da, I would like to ask Xiaopeng first, has the DNA extracted from the female deceased's mouth been obtained in the DNA database of the former department of the Ministry of Public Security for comparison?"

What is this problem!

Xi Hongbo was embarrassed by him and asked back: "What do you think?"

Xu Wei, the captain of the serious case squadron, reacted and hurriedly said, "Xi Da, I'm just asking. If you want to give your opinion, I think there are many doubts in this case that must be found out. First, we ran for a day, visited more than 40 relatives of Qiao Zhang's two families, visited five decoration companies where Qiao Xianhong worked, and more than 20 plumbers, carpenters, tilers, painters who worked together, and even visited some decoration material suppliers he frequently visited.

As a result, everyone knew that he had paid for the renovation and owed a lot of debts, but he didn't know how to pay for it, what decoration project he did, who he owed, and how much money he owed. Some of the things he owed were said by Qiao Xianhong before his mysterious disappearance, some were said by Zhang Qiuyan, and some were spread like this in one and ten times."

There must be a creditor when owing debts. Deputy Captain He thought this was a major doubt and asked in a low voice: "Have he ever borrowed money from relatives and friends?"

"No, so Qiao Xianhong is very suspicious. This suspicious does not mean that he is suspected of murder, but that he is suspicious about owing money to avoid debts. Since he owes a lot of debt, he must find ways to pay it back. As a result, no creditor comes to ask for it, and he doesn't care about borrowing money from relatives and friends to solve the urgent problem."

This is the first time I have encountered this situation after working as a criminal policeman for so many years.

Deputy Captain He pondered: "Maybe he really owes a lot of debts, but he doesn't owe to decoration, and the debt he owes far exceeds his repayment ability. Even if he is with relatives and friends, he can't pay it back, so he might as well leave it. If this is true, then the murderer who cruelly killed Zhang Qiuyan and his son is probably the creditor."

"After we found these suspicious points, we immediately thought about whether Qiao Xianhong was involved in gambling or drug-related matters. However, judging from the information we learned from the visits and inquiries, Qiao Xianhong is a person with almost no bad habits. Maybe because his father died early and his family was in trouble in the past, he was very hardworking, capable and willing to work hard.

No one saw him playing cards. During the holidays, relatives gathered together, and they didn’t play with him, nor did they play to tobacco and alcohol, and they were very frugal. People like him were neither likely to play gambling nor get involved in drugs. From this perspective, it can be seen that people as cautious as him cannot lose money when decorating, but they just have to make more money and do not owe huge debts because of decoration."

...

Qiao Xianhong disappeared, Zhang Qiuyan died, Qiao Xianhong's mother Wang Qiaolan had already remarried. What was going on in this family? There was no one insider!

The leaders studied and analyzed in the front, and Wu Wei sat in the last row and racked his brains and thought hard.

It was not until Liang Dongsheng stood up to report that he recovered and hurriedly sat upright.

"Report He Zhi, report to Xi Da. Our group visited and asked 214 residents of Yangguan Village. Although many villagers were enjoying the cool streets on the night of the incident, the villagers did not find anything abnormal because there were too many outsiders renting in the village. Considering that outsiders renting in the village either went to work, went out to work, or went out to do business during the day, our Liushu decided to organize a force to conduct a comprehensive and thorough inspection of outsiders renting in Yangguan Village at 10 o'clock tonight to see if they can gain something from the inspection."

Too many people, this is a headache!

All the traffic, public security and civil surveillance videos around Yangguan Village were extracted. Dozens of people were guarding the computer in the branch to repeatedly analyze and judge the video, but there were too many people and cars in the video, and it turned out that anyone was suspicious.

If there is a license plate number, you can check the car.

It is impossible for a person to have an ID number written on his face, but he only has physical characteristics. His facial features were not very clear at night, and there were thousands of people. How could he "select" them one by one and how could he find out their identities?

So when you encounter this situation, the stupidest way is often the best way.

Xi Hongbo felt that the evening inspection was very necessary, so he looked up and asked, "Is the police force enough?"

"It's definitely not enough, but Liu will find a way. At worst, you can check until dawn."

"Tell Liu Jianye that I will help you solve the problem if the police force is not enough. At 10 o'clock, right? I'll ask the police who assisted your investigation to gather at the police station at 9:30."

"Thank you Xi Da, I'll call Suo Liu."

"Go."

"yes!"

"Du Xiaolian, you are responsible for checking the mobile phone call records of Qiao Xianhong and Zhang Qiuyan, and prepare the procedures immediately; Du Shaohua, you are responsible for investigating the real economic situation of Qiao Xianhong and Zhang Qiuyan. I call the Economic Investigation Brigade and ask them to arrange two Economic Investigation Police to assist you, prepare the procedures immediately, and send the branch with Xiao Du to the signature of Bureau Zhou."

"Xu Wei, Qiao Xianhong's situation, especially social relations, should be thoroughly investigated. You should continue to be responsible for this line. Actions should be quick and work should be meticulous. You must never miss any clues."

"yes!"

...

The leader constantly issued orders, but none of these orders were related to himself.

When Wu Wei just heard that he would be transferred to the task force, he didn't know how excited he was. After all, not every policeman has the opportunity to participate in the investigation of major cases. As a result, he joined the task force and did the same job as before. During the day, he visited Yangguan Village with the criminal police and asked in Yangguan Village, and at night he had to go back to Yangguan Village to participate in the investigation.

Wu Wei was really a little disappointed. He followed Liang Dongsheng out of the conference room and couldn't help asking as soon as he got into the police car: "Master, the villagers do not know outsiders, and outsiders do not know villagers. At most, they know their respective landlords. Even if someone has seen the murderer, they may not find it suspicious. A dragnet-style inventory and taking advantage of the inventory to visit and inquire is effective?"

"If this murder case does not occur, we should not investigate the migrant population in Yangguan Village?"

Liang Dongsheng asked back, put on his seat belt and closed his eyes, yawning Lian Tiandi and said, "How do you think the case was solved? Sherlock Holmes is a novel, that is a movie! And the case is focused on evidence. Even if anyone knows that XX is the murderer, the case without evidence is not solved. Therefore, we need to coordinate multiple police forces and fight in large corps. Every job is very important and everyone is indispensable."

"But……"

"Don't, I know what you think. In fact, our case team is the criminal police team, and you, Wu Wei, are the criminal police. But in recent years, police reforms have been carried out, and we have to deal with both criminal cases and public security cases."

Liang Dongsheng moved his butt, adjusted to the most comfortable position, and then said, "You and Han Chaoyang are assigned to the institute together. The leader likes you and doesn't like Han Chaoyang. As a result, that kid makes something happen every now and then, which is indeed a bit stressful for you. But people are so angry that people are so angry that many things cannot be compared. He can always show off and it doesn't mean that he is more capable than you. He must have a better mentality, do you know?"

…………

PS: Two chapters tonight, and the third chapter will be uploaded at around 6 pm tomorrow.

I am really sorry for everyone if the update is not good, but it is indeed a special situation. Fortunately, the training has ended and I can concentrate on writing from the day after tomorrow.
Chapter completed!