After finishing the economic investigation case, Qu waited for them to continue investigating the Yuye murder case. Xu Zheng continued to explain his unfinished argument, "Let me use an analogy. First, we determine that the murderer is most likely a man under 40 years old. Because people in this age group are stronger.
Then they also have the ability and resources to learn the methods of committing crimes online.
As long as he searches for TV series, movies, documentaries, etc. similar to the Rainy Night Murder Case on short videos like Douyin, there will be traces of his browsing in the background. Internet police can contact Douyin officials to obtain these account information and investigate them one by one.
I have watched these similar videos myself, and the number of likes is not high, so there is not a lot of account information that needs to be checked.
Moreover, how did the murderer observe Hou Ruohan?
I feel that investigating her whereabouts will not be very useful, because the murderer can completely track her every move from the Internet.
If I were the murderer, I would definitely get to know Hou Ruohan through platforms such as Douyin and Weibo. I would definitely not observe her in reality, because in today’s society, not to mention the cameras everywhere, even passers-by often take videos. Post it online. "
Xu Zheng's words are a bit absolute, but in this case, the chance of the murderer personally tracking Hou Ruohan is indeed not very high, otherwise there will always be some clues about him in the six cases.
Wan Haihong and Qu Hou looked at each other and laughed at the same time. However, they sighed again. Detachment Wan said: "Our previous investigation ideas relied too much on experience and did not put much effort into the Internet. I propose , In the future, criminal police investigators must also have knowledge of cyber police.”
General criminal cases are mainly divided into criminal investigation and economic investigation, and other police types cooperate with them. However, with the rapid development of society, more police types have been established, such as the drug, food and environmental protection detachment, which was only established in the past few years.
In the area of criminal investigation, the investigators are selected step by step from below and have many years of experience in criminal investigation. However, even wise men may not expect things, especially the application of various high technologies in criminal cases.
Zhang Yuqi found the information of several previous victims and projected it on the big screen. "We have also checked before. People who have watched their videos on the Douyin accounts of these victims have been screened, but nothing was found. Suspicious person."
Wan Haihong and Qu Hou became interested, "Hasn't the same account viewed the videos of these five people?"
"No, colleagues from the Internet Police Technical Team told us that if ordinary people use the web version of Douyin and surf the Internet in an Internet cafe with the account as a tourist, it will be difficult to find traces."
After Zhang Yuqi finished speaking, she glanced at Xu Zheng again, "But I agree with the suspect proposed by Xu Zheng that he would learn the methods of committing crimes online. Isn't there a movie in Asan Kingdom about a father who learns police handling of crimes through TV? Helped his wife and daughter hide the crime of murder.
Therefore, check the browsing history of short video platforms such as Douyin and Kuaishou, and compare it with the accounts of the six deceased people. If there are the same accounts, 60% of them are the murderers. "
After Zhang Yuqi finished speaking, everyone began to discuss. What she said was indeed possible. Before, she only compared the accounts of the five deceased people, and did not expect that the murderer would learn from the Internet.
At this time, a female colleague from Suyun City asked weakly: "Then do we still need to track Hou Ruohan's whereabouts?"
The investigation must be carried out, and the investigation must be focused, not just in case there are clues. Moreover, the more careful the investigation, the more transparent Hou Ruohan's information will be. For example, why did she drive to the scenic spot in the middle of the night? Another example is Speaking of which, did the murderer and Hou Ruohan meet in real life?
Of course, not the last time.
These all need to be investigated, and they cannot be found in a short time. If a case is compared to a system, it requires the cooperation of various departments. If there are clues, then seize the clues and investigate vigorously.
Like the suggestion made by Xu Zheng, Qu Hou called two colleagues from the Internet Police on the spot. Without saying a word, they tried their best to track down this clue. Nowadays, the Internet is basically a real-name system. Most people log in directly with WeChat to play short videos on their mobile phones. , it would be very simple to check.
At two o'clock in the afternoon, forensic doctor Lu brought the latest autopsy results. It was confirmed that there were no clues on the surface of the body.
"However, I am not without gain. I checked the condition based on the victim's body." Forensic doctor Lu said, "If the murderer did not take medicine this time, he is a man with extraordinary talents. I estimate that the exercise time should be more than 40 minutes, so, The psychological prediction we made about the murderer before was probably incomplete.
This person did not have an affair with his wife or girlfriend because of sexual disharmony. From his series of behaviors, we can judge that he is a male chauvinist, has a strong desire to control, and has a typical antisocial cognitive disorder personality. "
Zhuang Qiang asked curiously: "Master Lu, even if we have this information, we still have no way of starting. Should we go to bars, nightclubs and other places to find such people?"
Peng Yue continued: "It seems that this is indeed possible. After all, such men should be rare, right?"
Lang Shaobai shook his head, "I think it's impossible. The murderer hates cheaters, so he won't use this method to vent his desires. I don't think the trophies he collects after committing a crime are just the hair of the dead cat." and clothes, and most likely he would take photos as souvenirs, and he would even record the entire crime process on his mobile phone.”
The investigator of Suyun City, passerby A, also said: "Since he came to Suyun City to commit crimes, judging from the fact that he commits crimes twice a year, he should live in Suyun City. I think we can investigate Su Yun City." Information about men who have rented houses in the city in the past year.
Well, there’s also hotel occupancy.
Or if he doesn't rent a house, then we'll check the highway intersection from Changming City to Suyun City. "
There are also two female investigators in the Suyun City detachment. At first glance, they are Jiangnan Rourou girls. Wu Nong said softly, "Several leaders and colleagues, I also have a small suggestion. It is like this. I compared it. These six The deceased had several things in common: they were all between 30-35 years old, 160-165 in height, had long hair and white skin.
Is that his girlfriend or ex-wife?
Can we check the people in Changming City who have been divorced one year or earlier and meet these conditions? "
The longer the study and judgment meeting is held, the more actively colleagues speak.
Even the investigator Ji Meiyue, who was used to sorting out information, made a suggestion. By the end of the meeting, the investigators present had reorganized nearly ten ideas from previous investigations. The suggestions and ideas compiled were divided into tasks on the spot. Of course, most of the places to be investigated were in Suyun City, so their detachment was responsible for more.
Changming City still needs to go back to discuss and reallocate the police force, because the Second Brigade cannot handle one case for a long time, and the Second Brigade has to be responsible for finishing the Huang family tragedy.
The investigation meeting finally ended at five o'clock in the afternoon. This was Xu Zheng's longest meeting. The discussion and investigation process of the entire case could be made into a reference book. However, it has not yet been determined whether these methods can find the murderer. .
All I can say is to check it first. This is the normal investigation process. It is impossible to find clues every time like Xu Zheng.
However, he proposed that the murderer learned the crime process online. There were no less than dozens of cases of killing women having affairs on rainy nights on several short video platforms. In addition to TV series and movies, there were hundreds of such short videos. Therefore, after watching these short videos The number of people has increased exponentially.
Two Internet police technicians checked in the afternoon and provided Xu Zheng with tens of thousands of accounts before leaving. What Xu Zheng had to do next was to analyze these tens of thousands of accounts, contact the platform, obtain the identity information of the accounts, and then filter them out. Someone who fits the mold of a murderer.
Xu Zheng scratched his head, this thing is not easy to deal with. There are so many, tens of thousands of people probably have less to say. Forget it, I have to complete the suggestions I made without sleeping.
When I returned to Changming City, it was almost eight o'clock in the evening. After arriving at the city bureau, they were dismissed immediately. Anyway, the murderer had already completed the case, and the next time would be at least three months away. No one had any intention of gathering for dinner. It was really a day of meetings and their heads were buzzing.
After arriving home, the whole family was sitting in the living room playing mahjong. What Xu Zheng didn't expect was that Lu Kexin came again, still wearing Han Rui's pajamas. It was obvious that this woman wanted to steal his sleeping place again tonight.
When Xu Zheng took off his raincoat and walked into the house, the four women did not stop playing mahjong, but they all turned around and asked him if he had eaten. Xu Zheng nodded, "I have, you continue to play, and I'm going to take a shower." "
At this time, Han Dongwen, who was sitting on the sofa, put down his mobile phone and hurriedly grabbed Xu Zheng, "Come on, Xiao Zheng, let me tell you first, what's going on with the Huang family's case? There's a lot of quarrel on the Internet, everyone is saying Your police have found the murderer, but the murderer has a strong background and dare not investigate further."
Looking at the curious Han Dongwen and the beautiful reporter Lu Kexin with her neck stretched out, it turns out that this is the purpose of her coming here. Xu Zhengxiao didn't hide it. After this case is over, the city bureau leaders will tell them If it is open to the public, because the police will not make it public, then the trial will be open to the public.
The Huang family tragedy has a high influence in Changming City. Of course, the police will not miss this publicity opportunity. "Uncle Han, we have identified the murderer of this case. It is not yet time to arrest him. Now we are Propaganda, Yan Jiafu, the chairman of Yangtze River Tourism Company is the murderer."
Han Dongwen became more interested, and even Lu Kexin stopped playing mahjong and ran directly to Xu Zheng, "Xu Zheng, you mean that the real murderer is not Yan Jiafu. If it's not Yan Jiafu, it can only be his son Yan Bo. Is it this way?"
Xu Zheng nodded, "Yan Jiafu's surrender is not to take the blame for his son, but to delay his son's time. But you can't spread this news for the time being, otherwise you will be legally responsible."
In fact, it's not that serious. The case itself has come to an end, and the smuggling organization, special police and action teams have already focused on it. In just a day or two, they will start to close the net.
Lu Kexin was very curious and formally asked Xu Zheng: "Xu Zheng, can I conduct an in-depth interview with your task force on behalf of Nanhai Metropolis Daily about this case?"
There is also a lot of competition among the media. In addition, the current print media has declined. The main focus of Nanhai Metropolis Daily’s online section is to make in-depth reports. “Okay, when the case is over, I will introduce you to our team leader, but can I Yes, I can't guarantee it.
Also, I will not be interviewed on this case. "
Lu Kexin smiled with satisfaction. Sure enough, this young man had to come here often to become friends with him. In this case, as a friend, Xu Zheng would never refuse a small request from a friend.
But after a while, when she learned that Xu Zheng was still involved in the Yuye murder case, Lu Ke became more interested. Because the Huang Family Tragedy has attracted more people in the Ming Dynasty, but the Rainy Night Murder Case will be of interest to everyone across the country, and it can even be adapted into a TV series.
Although the police kept the Yuye murder case secret, Lu Kexin obviously knew a lot. Could it be that Xu Zheng went out early in the morning because he caught the murderer?
If the murderer had been caught, Xu Zheng would not have come back so early.
If the murderer is not caught, and there was heavy rain last night, then the murderer must have committed another crime.
This is the sixth case. As a reporter, Lu Kexin secretly decided not to leave tonight because of her sensitivity to news materials. She would even stay here permanently. She couldn't persuade Xu Zheng, and she said she wouldn't bend him. Pillow person?
After Xu Zheng took a shower, he saw his grandma and Han Rui working in the kitchen. Next to him, Lu Kexin was taking pictures with her mobile phone and kept flattering her grandma.
Before Xu Zheng walked in, he smelled a strong smell of chicken soup. Could it be?
As expected, after walking in, I saw the freshly baked chicken crow soup dumplings, which is a delicacy in the old Gulou District. When Xu Zheng was a child, he often went to Jincheng Building in Gulou Square to eat chicken crow soup dumplings with his family.
The appearance is about the same size as Xiao Long Bao, but in fact it should not be regarded as a type of soup dumpling because the pleats are facing down. When it is first released from the cage, the surface of the soup dumpling is smooth, round and wrinkle-free. After the outer skin is exposed to room temperature, it gradually shrinks slightly and becomes tough. At this time, if you pick it up with chopsticks, it won't break. If you pick it up with your hands, hehe, you are just an amateur.
No, Lu Kexin was greedy. She took the rooster crow soup dumplings that had just come out of the pot and said, "Oh, it's so hot!"
Grandma Su Tongyun said angrily: "I told you just now, this is a soup dumpling, the soup inside does not flow out, can you not boil it?"
Xu Zheng hasn't eaten chicken crow soup dumplings made by his grandma for a long time. "Grandma, you haven't made these dumplings for a long time. We are in for a treat today."
"Didn't you say you had eaten? Oh, what should I do? Grandma didn't prepare your meal. How about I give you some noodles later?"
Xu Zheng pouted, "Grandma, your dear grandson's stomach is going to be hungry!"
Although Han Rui felt sorry for him, it was not as important as delicious food. "Hehe, let's do this. The first pot will be given to the two of them to try, and the next few pots will be steamed and they will all be yours."
Regardless of the fact that everyone in the family is here, plus Lu Kexin, their appetites are very small at night. Xu Zheng can support four of them by himself, so he will be a little later.
The Jiming soup dumplings were cooked, and Tian Xinyue also came to help. Eating this kind of dumplings must be accompanied by a portion of egg drop soup, plus a plate of vinegar and pickles. Soon, the dining table was filled with tableware.
Lu Kexin and Han Rui came over with several chicken crow soup dumplings. After grandma sat down, Lu Kexin took a sip of saliva and took off her chopsticks after grandma took the first bite.
When Su Tongyun saw it, he smiled and waved his hand to tell her to eat quickly, "Our family doesn't have that many rules. Hurry, eat while it's hot."
Seeing Lu Kexin holding chopsticks and preparing to pick up the steamed buns to eat, Han Rui quickly stopped her, "There is a certain way to eat these rooster crow soup dumplings. Lift them gently, move them slowly, open the window first, and drink the soup later." "
Xu Zheng ate sixteen steamed buns and drank a bowl of egg drop soup before he breathed a sigh of relief. Then he patted his belly and burped, "No, I feel sleepy after eating, I have to take a nap first. "
Han Rui wanted to stop him and hesitated, but let him go to bed first. In fact, if he ate too much for dinner, he would not sleep well, but Xu Zheng was obviously not in this category.
When Han Rui and Lu Kexin played mahjong until 10 o'clock in the evening, they went upstairs and saw Xu Zheng sleeping soundly in bed. However, the loud snoring made Han Rui's heart tremble, "Kexin, Sorry, he doesn’t snore much usually, maybe he was too tired this time.”
Lu Kexin waved her hand, "There is no man who doesn't snore. I took my things and went to Xu Zheng's room to rest. Xiaorui, you should go to bed quickly."
(End of chapter)
