Chengnan City is a prefecture-level city, is one of the large cities with a population of more than 5 million, is now in a period of rapid economic development, and criminal cases occur frequently, new criminal methods are also emerging, now the methods of criminals are more and more advanced, but also produced a series of cybercrime, high-tech crime and so on.

In the context of the new era, the provincial department requires that the murder case must be solved, and the comprehensive quality of criminal investigators has also put forward higher requirements.

Today, Xu Wandou followed his son Xu Lang to his orchard as usual, and they walked in as usual to check the condition of this year's fruit trees, but what they found today changed the silence of the past.

"Dad, be careful, don't you let you rest at home, I can do it myself, didn't your leg fall before?" Xu Lang said as he walked.

"Stinky boy, I won't come with me, what if the fruit tree gets sick, I have to save your wife for you to marry your daughter-in-law, Rory, don't be like a girl. Let's go...."Xu Wandou is like other fathers, and he is about to start scolding his son before he can say a few words.

The two fathers and sons checked in the orchard for a while, and Xu Lang was afraid that his father would be tired, so he suggested that the two of them want to rest for a while, and wait until they continue to check the remaining half.

After they rested, they walked to another fruit forest, who knew that there was a person lying on the ground, Xu Wandou frowned, and thought that the thief had come to steal from his fruit forest again, so he shouted loudly, but the people on the ground still did not react.

Xu Wandou called Xu Lang and walked over together, imprinted in front of him was the corpse of Chi Guoguo, with a knife in his chest, and his eyes were wide, staring at the sky as if he was not dead.

Xu Wandou's body trembled a few times, and he trembled and said, "Xu Lang, hurry... Fast... Call the report, it's dead..."Xu Lang was also so frightened that his face turned pale, and he took out his mobile phone from his pocket and dialed the report.

Soon, after You Jia and the others received the call to report the case, they quickly brought someone to the scene, and Chen Yang came to the person who made the report as usual to make a record.

The scene where the deceased was found was a fruit forest, the owner of the fruit forest was Xu Wandou's family, today they came to check the growth of the fruit trees, at first they thought that outsiders came here to do damage, who knew that someone died in their own fruit forest.

Soon Xu Wandou asked his son Xu Lang to call the police, and from their oral statements, they didn't know who the deceased was or how he died in their own orchard.

Since most of the families in Mauritun Village in Xihuan make a living by planting fruit trees, under normal circumstances, there are not many families who can contract a fruit forest, after all, the economic conditions limit the ability of many people.

And Xu Wandou and they usually come to the fruit forest once every two to three days to inspect, because the fruit trees have not yet borne fruit, they say that the hired people have not started to come here to work.

According to Luo Ming's examination, the victim should have been dragged to the orchard to violate and then killed, and the deceased had traces of being dragged to the ground on his back.

However, You Jia didn't know that because this female murder case kicked off the prelude to the Maolitun serial female murder case.

Since then, they have received the same report call at different times, and the deceased was killed by the murderer in a private fruit grove, and the deceased also had a fruit knife stuck in his chest.

The murderer's methods and methods of committing the murder are basically the same, and the most important point is that Type B rice green liquid was found in the victim's body, and You Jia and others connected all the cases together, pointing to the same murderer.

You Jia and others came to a conclusion based on the investigation of the scene, that is, the murderer was very familiar with the location of the crime, and would lurk in all the places of the crime in advance, waiting for the victim randomly, and attacking once the lone victim was found.

This point is still Chu He and Du Mingyuan's social relationship with several deceased, because no matter how they checked, they could not find out that these deceased had the same social relationship, and after their visit, these deceased did not know each other in real life.

In particular, it was still raining when the third case occurred, and the victim was killed by the murderer who had been waiting in the rain for a long time while on the way to give his father an umbrella.

Ji Ziyue rubbed his forehead in his position, yawned, and said weakly: "This is already the sixth female murder case, we have checked so much information, and found so many different people to come back for questioning, but we have not found any effective clues." ”

Since the murderers in this case are all on the Guolin side, some families generally do not install surveillance on the Guolin side, so this has caused them great difficulties.

Everyone has been handling cases for the past few days, and their spirits are tense all the time, and everyone's face is more or less tired.

Especially when they go to Chen Yang and Chu He, the two of them just need to deal with the owners in those orchards, it takes a long time, and sometimes when they encounter some people who do not cooperate with Jing Fang's case, they are also responsible for bringing people back to assist in the investigation.

Lian Yinglan yawned, rubbed her eyes, and said: "The pressure on You Jia is greater than ours, now the city bureau has been urging, and the Zhang bureau is also urging, even if we have been working overtime recently, no matter how many clues we found before, as long as we bring people back, those people have time to witness, and they don't have time to commit crimes at all." ”

As soon as Lian Yinglan finished speaking, she was about to discuss the case with Ji Ziyue, when she turned her head and found that the person was already sitting in the position and dozing.

Lian Yinglan smiled silently, and then continued the work at hand, and after a while, the phone in the office rang again, Ji Ziyue was directly frightened and sobered up, patted her face, and Lian Yinglan just hung up the phone, her face turned dark.

Then they woke up Chu He and them together, and when they came out of the scene, the seventh female murder case occurred, and there were seven cases in just half a month, but this time they found eyewitnesses and brought some favorable clues to the case.

This time, the victim was not killed by the murderer, and under the guidance of Lian Yinglan and others, the victim slowly spoke.

She said that when the murderer violated her, he hummed a similar nursery rhyme in his mouth, and You Jia invited a language expert, and the victim shook his head after listening to several local languages, indicating that it should not be a Chinese type.

When the expert sang a cherry blossom folk song, the girl immediately became excited, saying that she remembered that what she heard at that time was a Japanese nursery rhyme, but because she did not understand Japanese, she did not know what the murderer was singing.

Lian Yinglan tried to let the girl hum it, but when she recalled it carefully, she suddenly had convulsions because of emotional tension and excitement, and the inquiry had to be terminated, after all, it was a bad memory, and the girl broke down and hugged her head and screamed.

Lian Yinglan and Ji Ziyue hurriedly calmed the people, for fear that the girl's psychology would not be able to stand it, and asked the psychiatrist in the bureau to help calm them.

Later, You Jia and others found some nursery rhymes with local and regional nature in Sakura Country for the girl to listen to, and the girl listened to nearly 100 songs, and felt that many of them were very similar to those days, but they couldn't be sure which song it was.

They said that the age of the suspect was locked between 30 and 40 years old, and the murderer should be a person with a criminal record of sexual violence, so they conducted a screening at this age group, but they still did not find a qualified murderer.

You Jia and the others conducted a very close investigation, comparing all the suspects with saliva and blood, but they did not find a matching murderer.

In the third case, they identified three suspects, aged between 40 and 50, two of whom had criminal records and had been in prison, and the other suspect had been near the place of the homicide in the fourth case.

However, after their investigation, these three people had time to witness, and there were many people to corroborate for them at that time, so their suspicions were temporarily cleared, but You Jia still found someone to keep an eye on them in secret.

Because You Jia keenly found that their alibi did not coincide, the possibility of the two committing crimes alternately could not be ruled out. Alibi proof of this kind of thing will always find a gap that can be broken, so it is not possible to completely clear the suspect of suspicion, if the two people committed the crime alternately, in order to carry out counter-investigation and disrupt the progress and direction of the investigation, it is still very likely.

Chu He and Chen Yang also felt that what You Jia said was very likely, and they also firmly believed that the murderer used anti-investigation techniques, and the murderer in this case should be a person with a fairly high IQ.

According to the results of their current investigation, the murderer is a very tough and calm person, and judging from the identification report of the victim's fatal injuries, the murderer is very ruthless, so this is why he does not hesitate to plunge the knife directly into the deceased's chest every time.

As for the victim of the seventh incident, why he did not kill is likely because the girl was heard when she was calling for help, and the murderer was afraid that he would be exposed, so he left the scene at night, so that the girl saved her life.

Luo Ming once said that the victim's body was violently abused and humiliated, indicating that the murderer had a psychosexual disorder, which is commonly known as sexual perversion. It is a mental disorder that includes a variety of different habits, such as sexual abuse, heterosexual dressing, etc.

Since there has been no progress in the case so far, You Jia once again invited the victim of the seventh case back, and the girl's parents were very reluctant to take the girl to the Jing Bureau, You Jia apologized to them, and made it clear that this was to catch the culprit as soon as possible, so they would trouble them to do it again.