Solving the case: Combining the police dog's olfactory genes at the beginning

At the meeting, everyone analyzed and discussed the case again.

At seven o'clock in the evening, the case discussion finally ended and we got off work.

As soon as Luo Fei left the criminal police team, he received a call from his mother Wu Yan. Wu Yan asked Luo Fei if he would go back for dinner.

Luo Fei told Wu Yan that he would be back soon, and then hung up the phone.

Just as he was about to go home, after walking a few steps, Luo Fei suddenly thought of Liu Wei. Liu Wei was the brother-in-law of the deceased Jin Dayuan. According to what the middle-aged eldest sister said at noon, Liu Wei should be accompanying his pregnant wife in the county hospital at this time. .

Thinking of this, Luo Fei turned right from the intersection in front of the criminal police team and headed towards the county hospital, ready to check on Liu Wei.

In less than ten minutes, Luo Fei had arrived at the county hospital. Luo Fei wanted to see the ward where Liu Wei's wife was, but he was in trouble. He didn't know Liu Wei's wife's name. Fortunately, he used the home address in the case book. In Shijiacun, Luo Fei successfully found the ward where Liu Wei's wife was, and also learned the name of Liu Wei's wife, Huang Ying.

Ward 526

Luo Fei came to the door of the ward and heard a man's voice inside, "Xiaoying, no matter what, you should eat a little. Your health is the most important thing. If the child is gone, it will be gone. At the worst, we can just adopt a child in the future." If you don't eat something, your body will definitely not be able to bear it.

Luo Fei walked to the door and saw clearly what was going on inside.

A pale and thin woman wearing a hospital gown was lying on the bed looking out the window with blank eyes. In front of her, a young man with a flat head, dark skin, simple and strong skin was holding a bowl of porridge and was earnestly persuading the girl. It could be seen that Boys care deeply about loving girls.

But when Luo Fei saw the dark and muscular young man, the expression on his face changed instantly. At this time, the young man's body was filled with thick black air. The black and ferocious little man on the young man's head was staring at Luo Fei with his teeth bared. Compared with the villains Luo Fei had seen before, this time the villain was lifelike and not much different from the real villain.

At this moment, it was almost unnecessary to think that the murderer of the murder of four members of Jin Dayuan's family was this simple and strong young man in front of him.

But isn’t he Jin Dayuan’s brother-in-law? Why did he kill Jin Dayuan's family of four? How much hatred must this have caused?

"By the way, Liu Wei just seemed to mean that their child was gone. Could it be related to Liu Wei's sudden killing of Jin Dayuan's family of four overnight?" Luo Fei thought of what Liu Wei had just said. , couldn’t help but think.

After confirming that Liu Wei was the murderer of the murder of four members of Jin Dayuan's family, Luo Fei did not enter the room, but carefully stepped back.

"It must be true. Liu Wei was obviously taking care of his pregnant wife in the hospital, but he drove to Taohua Village in the middle of the night and killed Jin Dayuan's family of four. This must be related to the fact that Liu Wei and his wife Huang Ying had no children. Related." Luo Fei thought, and went to the Obstetrics and Gynecology Department, found the director of the Department of Obstetrics and Gynecology, and identified himself. Then Luo Fei specified that he wanted to find the attending doctor in charge of Liu Wei's wife Huang Ying.

The director of obstetrics and gynecology immediately called the doctor in charge of Liu Wei's wife to the office.

The doctor responsible for treating Liu Wei's wife is called Zhao Li, and she is a female doctor in her forties.

"Dr. Zhao, I would like to ask, what is the situation of Liu Wei's wife Huang Ying?" Luo Fei waited for Zhao Li to enter the office and asked impatiently.

"This is Comrade Luo Fei from the Criminal Police Team. He is investigating the case. Zhao Li, please cooperate with Comrade Luo Fei's work. I have a meeting over there, so I will leave first." The director of the Obstetrics and Gynecology Department introduced Zhao Li Luo Fei, then said hello to Luo Fei and left the office.

"Huang Ying?" Zhao Li looked at Luo Fei doubtfully and asked.

"Yes" Luo Fei nodded in affirmation.

"Comrade policeman, I don't quite understand what you mean?" Zhao Li shook her head, indicating that she didn't understand what Luo Fei meant.

Luo Fei then reorganized his words and said: "I heard that the child in Huang Ying's belly was gone. I wanted to ask what caused the child in Huang Ying's belly to be gone."

"Oh, that's it. Huang Ying fell down, which led to the miscarriage of the child in her belly. It's a pity that the child was already six months old and fully formed. As a result, she accidentally fell and the child was aborted. That's it. I think Huang Ying and his wife both like children. Because of the child, Huang Ying hasn't eaten these days and relies on glucose infusion to maintain her health." Zhao Li said with a smile on her face. A look of regret.

"Dr. Zhao, when was Huang Ying's miscarriage due to a fall?" Luo Fei asked quickly.

"Just half a month ago, at three o'clock in the afternoon, Huang Ying's husband sent Huang Ying to the hospital." Zhao Li answered.

"Did Huang Ying's husband Liu Wei say about Huang Ying's wrestling?" Luo Fei continued to ask.

"Yes, when we asked about the situation, Huang Ying's husband said this. He said that Huang Ying accidentally fell in the yard."

"Well, thank you, Dr. Zhao."

"You are welcome."

"By the way, Dr. Zhao, today I'm asking you to find out about Huang Ying's miscarriage. Don't reveal it to others, because it involves a case we are investigating and needs to be kept confidential. I hope Dr. Zhao can understand."

"Don't worry, I will keep it a secret."

After leaving the county hospital, Luo Fei was already very sure that Liu Wei's killing of Jin Dayuan's family of four was closely related to Huang Ying's miscarriage. Luo Fei suspected that Jin Dayuan was the culprit of Huang Ying's fall and miscarriage. , so Liu Wei directly killed Jin Dayuan's family of four in a rage.

Now that we know Liu Wei is the murderer, the investigation of this case will be much simpler.

Luo Fei first called Wu Yan and told Wu Yan that he had something to do in the evening and would not go back yet. He might not go back until very late at night, and asked them not to wait for him.

Luo Fei then went directly to the police station to check the surveillance of the yellow light intersection last night.

This is a must-pass intersection from Taohua Village and Shijia Village to the county seat. If Liu Wei is really the murderer, Liu Wei will definitely be found in the surveillance.

Sure enough, after a while, Luo Fei found Liu Wei on the surveillance camera.

Last night at 11.31pm, Liu Wei left the county seat on his motorcycle and returned to the county seat at about 2.35am. According to the description of Zhao Wanqing and his wife and forensic identification, the time when Jin Dayuan's family was killed was about 2am, and from Taohua Village to It takes about half an hour to get to the county seat, so the time Liu Wei returned to the county seat coincided with the time when Jin Dayuan's family was murdered.

Then Luo Fei thought for a while, took out his mobile phone and called Zhao Donglai.

and the other side

At this time, Zhao Donglai had just returned home from the criminal police team. As soon as he got home, he was sitting listlessly on the sofa.

"What's wrong? Is it about the case again?" Zhao Donglai's wife saw her husband like this and immediately guessed that her husband must be about work again.

Except for work matters, she has never seen Zhao Donglai behave like this in other matters.

Zhao Dong glanced at his wife, then nodded.

"What happened? You went out after answering the phone in the middle of the night yesterday and didn't come back until now. Did some big case happen?" Zhao Donglai's wife asked curiously.

Zhao Dong came to look at his wife and was about to say something, but when he thought of the public security confidentiality regulations, he immediately shut up.

"Okay, I won't ask anymore. It's like this every time. I don't want to know yet. Go wash your hands and eat quickly. I'll heat up the food for you." Zhao Donglai's wife glanced at Zhao Donglai dissatisfied, and then He stood up, picked up the food on the table and walked towards the kitchen.

Zhao Donglai was lying on the sofa, thinking about the case all the time. The impact of this case was too bad. If the case could not be solved as soon as possible, it would definitely have a major impact on Zhao Donglai's future development.

at this time

"Dudududu"

The phone in Zhao Donglai's pants rang, and Zhao Donglai picked up the phone.

The caller ID showed Wu Cheng, Director of the Public Security Bureau.

Zhao Donglai had an unnatural expression on his face. Needless to say, Wu Cheng must have come to inquire about the case.

"Hey, Bureau Wu, I'm just about to report to you on today's work progress." Zhao Donglai answered the phone and said proactively.

"How is the progress of the case? Let me tell you, the higher-ups are aware of the case of Jin Dayuan's family murder and are taking it seriously. If there is no major breakthrough on the criminal police team's side within three days, the city will set up a task force to investigate. "Wu Cheng's tone on the opposite side was solemn and serious.

"Don't worry, Director Wu. We have learned that the murderer should be familiar with the deceased, and the murderer is very familiar with Taohua Village, so we suspect that the murderer should be someone from Taohua Village or around Taohua Village. In addition, we also learned that the crime occurred The murderer should have entered Taohua Village on a Wuyang motorcycle that night. So based on the clues we have so far, we have launched an investigation. At present, we have investigated Taohua Village and are investigating whether there are Wuyang motorcycles in the nearby villages of Taohua Village. villagers." Zhao Donglaihui reported.

"Well, it's not that I want to put pressure on you. You also know what the murder case means. If this case cannot be solved, not only you, but also the criminal police team, and even our Ningjiang County public security system will be affected, so this You must solve this case as soon as possible." Wu Chengyu on the opposite side said seriously.

"Bureau Wu, you don't need to tell me to know. Don't worry, we will do our best to solve the case as soon as possible." Zhao Donglai assured.

After finishing the phone call with Director Wu, Zhao Donglai's wife had already heated up the food, put it on the table, and called Zhao Donglai to eat. As soon as Zhao Donglai walked over, sat down, and picked up the meal, another phone call came. The leader in charge of public security in the county.

Zhao Donglai smiled bitterly, could only put down the bowl and answered the phone.

What the leader said was similar to what Wu Cheng said. They both said that the impact of this case was very bad and asked the criminal police team to solve the case as soon as possible.

After ending the call with the leader again, Zhao Donglai's wife said with some dissatisfaction: "It's true, I can't even eat a meal. It's true that these leaders only know how to call to remind me."

"I know that you criminal police officers are in charge of matters involving human life. You are usually busy with work, but now it is meal time. People have to eat. Could it be that you don't even eat at work? You said you can do it now Have you eaten in peace?" Zhao Donglai's wife asked.

"There should be no phone." Zhao Dong said, and was about to get the bowl, but the next second.

"Dudududu"

The phone on the table rang again.

Zhao Donglai's wife immediately looked at Zhao Donglai with an unkind look.

Zhao Donglai was also curious, besides Director Wu and the leaders in charge of public security, who else would call him at this time.

Caller ID, Luo Fei.

Why did Luo Fei call so late? Is there any progress in the case? Zhao Donglai was a little confused at first, but then he thought that Luo Fei's call might mean there was progress in the case, and a look of anticipation suddenly appeared on his face.

"I'll answer Luo Fei's call." Zhao Dong said, ignoring his wife's unkind eyes, he took the phone and walked aside.

"Luo Fei, why did you call me?" Zhao Donglai calmed down and asked calmly. It could be seen from the expression on his face that Zhao Donglai was a little nervous at this time.

"Captain Zhao, is there something new here?" Luo Fei said on the phone.

When Zhao Donglai heard this, his face suddenly showed excitement.

"What's going on?" Zhao Donglai asked quickly.

"That's right, Team Zhao. When we were investigating in Shijia Village, there was a villager named Liu Wei. He also owned a Wuyang motorcycle. Moreover, we also learned from the investigation that Liu Wei was the brother-in-law of the deceased Jin Dayuan."

"At that time, we wanted to investigate Liu Wei, but we learned from the villagers that Liu Wei's wife was pregnant and was staying with her in the county, so we did not investigate him immediately."

"I just finished the meeting, thinking that Liu Wei was in the county hospital, so I thought about going to the county hospital to check the situation. I found that the smell on Liu Wei's body was the same as the smell at the crime scene, so I suspected Liu Wei He was the murderer who killed Jin Dayuan’s family of four,” Luo Feihui reported.

"Liu Wei is Jin Dayuan's brother-in-law. Does he have a motive for killing?" Zhao Donglai asked doubtfully.

Luo Fei replied: "Team Zhao, we found out that Jin Dayuan likes to gamble and borrow money, but he often doesn't repay the money he borrows. It is said that he has been borrowing money from Liu Wei and his wife. I just got the news in the hospital that Liu Wei's His wife Huang Ying had a miscarriage due to a fall more than ten days ago. I suspect that this incident was related to Jin Dayuan. It is very likely that Liu Wei committed the massacre because of his wife's miscarriage. Of course, it depends on whether this is the case. Further investigation."

"Okay, okay, if Liu Wei is really the murderer of Jin Dayuan's family, then it will be much easier for us to investigate this case." Zhao Donglai said excitedly, and he believed Luo Fei very much.

8:30 pm

Pedestrian Old Street, Yongchang Hotel, through the public security system, Luo Fei and the others found that Liu Wei used his ID card to open a room in this hotel.

Then Luo Fei took Wang Yong and Zhao Cheng to the hotel.

I don't know how many years ago the hotel was renovated. The decoration inside is very old and shabby.

"Do you want to stay in the hotel?" Behind the counter, the aunt who looked a bit shrewd and snobbish and dressed up in a fancy dress asked enthusiastically.

"We are the police. Is there a man named Liu Wei living here?" Luo Fei took out his ID and asked seriously.

"Liu Wei, let me check." The aunt was stunned at first, then said quickly, followed by checking the hotel check-in information.

"Yes, there is a man named Liu Wei, who has rented it for half a month." The aunt said after checking the registration information.

"Which room does he live in?" Luo Fei asked.

"260" the aunt replied.

"Please take us there," Luo Fei said.

"Okay," the aunt said, picked up the key and quickly went upstairs.

Arriving at room 260 on the second floor, the aunt opened the room.

"This is the house where Liu Wei lives. Comrade police officer, is Liu Wei a criminal?" the aunt asked cautiously.

"Sorry, our police have a confidentiality agreement and these are confidential, so I can't tell you." Luo Fei shook his head and walked into the room.

As soon as he entered the room, Luo Fei noticed the black air permeating the bedside of the room.

"Search the room to see if there is anything suspicious." Luo Fei walked into the room and said to Wang Yong and Zhao Cheng behind him.

"Understood." Wang Yong and Zhao Cheng then searched around the room.

Luo Fei walked straight to the bed and lifted the pillow at the head of the bed. Then Luo Fei saw a two kilogram hammer hidden under the pillow.

"This must be the murder weapon." Wang Yong said excitedly when he saw the hammer under the bed.

"Now we can be sure that Liu Wei is the real murderer of Jin Dayuan's family of four." Zhao Cheng also said excitedly.