Since the last thunderstorm stopped, it has been a sunny day. On the only road from Dawang Village to the county town, a Santana was driving slowly. The road was no longer as muddy as the previous few days, which was much easier to walk than when I came to Dawang Village on the first day.

Because the words and actions of the suspect Wang Wu (nicknamed Wang Dapao) were very suspicious, the criminal police team decided to take Wang Dapao to the county bureau for further interrogation and fingerprint comparison.

…

…

After going to the county bureau to complete the procedures, Shaodong sent Wang Wu's fingerprint materials to the technical room and asked Wu Wei for comparison. Wu Wei told everyone that after comparison, the fingerprints, footprints and the DNA on the cigarette butts were not part of the deceased, which means that it is very likely that it came from the suspect.

Li Tie and Wang Bo completed the procedures and sent Wang Wu to the detention center for trial. Everyone was waiting for the appraisal results.

Wuwei spent a day to compare Wang Wu's fingerprints in detail. After the result came out, everyone breathed a sigh of relief. Wang Wu's fingerprints were completely consistent with the fingerprints left on the windowsill. The footprints on the scene were also very consistent with the characteristics of the soles of the Jiefang shoes worn by Wang Wu's feet. The cigarette butts left on the scene were also very consistent with the cigarette butts left on the scene.

Through the comparison of the public security internal network, it was found that Wang Wu had a criminal record. It was seven years ago. Wang Wu was dealt with by the S Provincial police. The charge was for fraud, impersonating a monk, and defrauding property in the name of eliminating disasters. He was sentenced to three years.

This kind of scam that pretends to be monks and Taoists seems incredible in modern cities, but in many remote villages and towns with backward information, many people are still deceived.

Li Tie took everyone to the county detention center to interrogate Wang Wu, Li Tie and Shaodong were responsible for interrogation, and Wang Bo recorded.

Li Tie was silent, looking at Wang Hu without saying a word, Wang Wu sat on the interrogation chair with handcuffs, his body trembling slightly, and his eyes showed surprise and fear.

"Wang Wu!" Li Tie suddenly shouted loudly, Wang Wu's body shivered suddenly, and Qiqi Aiai said: "Government, I, I'm wronged."

Shaodong read the fingerprint identification results to Wang Wu.

Li Tie asked: "Wang Wu! The fingerprints left by the murderer at the scene are exactly consistent with your fingerprints. What else do you have to say?"

"I, I know you doubt me, I really didn't kill Goudan." Wang Wu said panic.

Seeing that Wang Wu was still unwilling to confess, Shao Dong said from the side: "Wang Wu, you have had a criminal record before, and it is not the first time you have dealt with us. You should be clear about our policies, be honest and lenient, resist strictness, and think about it carefully."

Wang Wu murmured: "I didn't kill Goudan, I really didn't kill Goudan."

Li Tie said word by word: "You think we can't do anything if you don't explain, right? You must understand that according to the law, even if we do not make any confession, as long as we have enough evidence to prove that the suspect is the murderer, we can still convict you and sentence you to death!"

"I, I, I just stole some money." Wang Wu said.

Li Tie and Shao Dong looked at each other and then asked, "To be specific. What happened on that day?"

"It was probably... on the night of the 26th, that is, the early morning of the 27th. Since Goudan came back, he looked very generous in dress and played mahjong every day. I felt that he should have made a lot of money outside. I was not in the process of dealing with him, so I was thinking about making some money to spend. If I force him to do it, I was afraid that he would take revenge. So I paid more attention to him in those days. I knew that he would play mahjong until very late every night, and usually he didn't go home to sleep until two or three in the morning. After staying up for a long time, he would definitely sleep heavily when he got home. I set an alarm clock in the second half of the night. While he was sleeping, he climbed over the wall and entered the yard. The living room door was locked, and the bedroom window was open. Snoring sounds could be heard from the outside of Goudan's bedroom window. I got into the bedroom through the window and stole Goudan's more than 1,000 yuan." Wang Wu narrated the passage.

Facing a suspect with a criminal record, Li Tie felt very distrustful, because such a person knew the process of police interrogation very well and could plead guilty to avoid the seriousness and attempt to reduce or even escape legal sanctions.

Li Tie then asked, "Did Li You not notice that you stole the money?"

"At that time, his clothes were placed on the head of the bed. I took the money from his pocket. He was still asleep and I didn't dare to stay, so I ran out." Wang Wu said.

"Where did it come out?" Li Tie asked.

"The gate in the yard is not locked, and the door bolt is used. I pulled it open and ran out." Wang Wu said.

Shao Dong asked, "That is to say, according to your words, the door is open after you leave, and anyone can enter, right?"

"Yes." Wang Wu said.

Li Tie asked: "Then I ask you, what conflicts do you have with Li You's family?"

"That's been a few years ago."

Shao Dong said from the side: "If you ask what conflict you are, you will just say the conflict, but you didn't ask about your time."

"Yes, yes, my family and Goudan's farmland are adjacent. Because there is a drainage channel passing through my field, it separates my family about three-point land to Goudan's house. Goudan's father said that the three-point land belongs to his family. At that time, the villagers had no money and lived a tight life, so they could barely have a meal. So these foods were very important to everyone at that time, and my family had a conflict. Later, when harvesting, because of the belonging of this area, our two families had fought and their lives were getting better in the past few years. Although our two families occasionally met, they still didn't talk, but they had no quarrels. Frictions like ours are very common in rural areas, and they are not as good as life or death. No matter how hard they don't understand the law, they know that killing people will pay their lives." Wang Wu said.

"You stole Li You's money, and then Li You died tragically at home. Is there such a coincidence?" Shao Dong said in confusion.

After explaining the crime of stealing, Wang Wu seemed to relax and said, "What I said is true. You can investigate. I really didn't kill anyone."

Because there was no tangible evidence to prove that Wang Wu killed someone, he had to end the interrogation of Wang Wu. Everyone was thinking along the way, but no one spoke.

In investigation, it is common to encounter setbacks. This murder case with bad means matches the fingerprints and footprints. The suspect admitted that he had been at the scene and did not admit to committing the crime. This situation is very rare. Although Wang Wu's confession seems reasonable, Wang Wu's suspected murder cannot be ruled out.

What is needed to solve the case is that the evidence link is complete. Only by finding the entry point, such as finding the murder weapon, or the suspect confessing the murder process and details, can the murderer be confirmed through the on-site comparison.

"Hello captain." Shao Dong stood up and said, Li Tie and Wang Bo stood up.

The captain of the criminal police brigade Deng Kai pushed the door and walked in. He smiled with his hands behind his back, "Everyone sits, I'll come and take a look."

"Why are you worried? Are you having trouble in the case?" Deng Kai asked.

"Battle of Deng encountered some problems, but we are still working hard to investigate. We will continue to go to Dawang Village tomorrow." Li Tie replied.

"I heard Lao Wu report this case to me. I learned that you have been in Dawang Village and I am very concerned about it. Yesterday I asked Wuwei to find out the case. I just heard that you are back. I came over immediately. You can take a look at this." Deng Kai said as he took out a file bag and handed it to Li Tie.

Li Tie opened the paper bag, took out the information and took a look, and said seriously: "Serial murder case?"

"Look at it, does the murderer's method look like the serial murder case more than ten years ago?" Deng Kai said.

Li Tie opened the file and went in, forgetting that there was a captain next to him.

"Did the case in Dawang Village kill people with a sharp stabbing weapon? No trace was left on the scene. In order to prevent footprints from being exposed, the murderer also had cloth, towels and other disguises on his feet, and the deceased was a wealthy person in the local area." Deng Kai asked.

Shao Dong said: "Yes, captain, you all got it."

Wang Bo said: "Battleman Deng, is the murderer in the serial murder case alone?"

"After analysis, the murderer was a single man, and a middle-aged man, and now he should be a middle-aged man. Judging from the time of the first serial murder case, it has been 15 years since then, and the deceased are between 24 and 33 years old. Now let's study and analyze the murderer's method of committing the crime, whether there is a possibility of a case investigation." Deng Kai analyzed.

Li Tie closed the file and said seriously: "Battle of Deng, the murderer's method and habit of murder weapon were very similar. In the murder case in Dawang Village, an unsmoked cigarette butt was found at the scene. Forensic Wu extracted DNA from the cigarette butt. It can be confirmed that the cigarette butt was not smoked by the deceased, but it cannot be sure whether it was left by the suspect."

"Of the seven cases of serial murders, there was a printed on the calendar at the scene of one of the cases with blood-stained palm lines. Due to the backward criminal investigation technology at that time, the DNA technology was not used at that time. At that time, the investigators had never heard of what 'dna' was, so they just extracted the on-site evidence as much as possible. Because of the lack of clues, all seven cases became unsolved cases. The calendar was also put into a physical evidence bag and placed in a filing cabinet." Deng Kai said.

Shao Dong said: "In the early 1990s, most of the biological evidence identification that the Chinese public security system could do was just to check the blood stains. In 1991, my country introduced DNA fingerprinting technology. As the first generation of DNA identification technology, this technology required a large number of samples to complete the detection. It must be a complete piece of tissue or a tube of fresh blood. The DNA extracted from the calendar was very trace. The technical conditions at that time could not produce any results. However, in the past decade, my country's DNA identification technology has achieved rapid development. After 2000, the first generation of DNA fingerprinting technology was gradually replaced by "fluorescent labeled multi-locus str complex amplification detection technology". Compared with the first generation of technology, this technology only requires a small number of DNA templates to meet various identification needs, not to mention that we have a great scholar Wu Wei, which can be operated."

While speaking, everyone looked at Shaodong. Deng Kai asked with a smile: "Haha, it's interesting. This means that you have worked hard when you are studying. You told me all the Wuwei you mentioned. I have handed over the physical evidence calendar to Wuwei. It will be up to you to solve the case later."

"Yes, captain." Shao Dong said.

Deng Kai said: "You performed well and do your best. The organization will give you a heavier burden in the future." Deng Kai said.

"Yes!" Shao Dong said.

"You have been studying the file. I have been very busy recently. The bureau has limited staff. Lao Wu and his team are investigating a case of trafficking in women. So we can't send you more police force. Thank you for your hard work." Deng Kai said, walking to Li Tie and patting Li Tie on the shoulder and said, "Old Li, I heard that you are stationed in Dawang Village. I have worked hard recently. When the Internet Clearance Operation is over, I will give you a vacation, but there is a prerequisite, that is, you must complete the task for me."

"Don't worry, Team Deng." Li Tie said.

Deng Kai took out half of the Chinese cigarette from his pocket and handed it to Li Tie and smiled: "Hold it, I quit smoking, your sister-in-law doesn't allow me to smoke."

Li Tie smiled with a cigarette, "Thank you, Team Deng, say hello to my sister-in-law for me."

"Yes." Deng Kai waved his hand, turned around and walked out.

Wang Bo gave Shaodong a thumbs up and smiled, "Brother Dong, awesome."
Chapter completed!