After discovering the body of the deceased, Bao Chen and they conducted a visit and investigation near Minghua Road, and soon found out the identity of the deceased, and the parents of the deceased had just returned from the police station to report the case, and they heard that a girl was found in the public toilet on Mingxi Road and was killed in the public toilet.

When Bao Chen took the deceased's parents to the public security bureau for questioning, Li Xi's mother Liu Lan woke up, Liu Lan kept crying, and kept telling the police that her daughter was a good child, although she was not very good at studying, but she was usually very obedient, but Li Xi's father Li Jing had been silent, and there seemed to be something unspeakable.

After some enlightenment and persuasion, Li Jing said some things about his daughter.

Don't look at Li Xi is only sixteen years old, but she has three boyfriends, except for the first one who is her classmate, the remaining two are gangsters and bad young people in society, because of this incident, Li Jing was often found by Li Xi's teacher, and every time Li Jing went back from school, it was right; Li Xi criticized and educated, but the child was older and just happened to be in the rebellious period, so he couldn't listen to his parents' teachings at all, but fortunately, although Li Xi was rebellious, Li Xi never didn't go home at night, although he went back late every night, but he would go back.

After Bao Chen knew the identity of the deceased, he went to Li Xi's school to visit and investigate, especially when Yu Jing's parents mentioned the two boyfriends, after some investigation, it was found that the gangsters who had been mixed with Li Xi for a long time happened to be locked up in the detention center for theft not long ago, and they had not been released.

When visiting Li Xi's classmates and teachers, according to Li Xi's classmates, Li Xi is a very stinky and beautiful girl, she wears flowers and branches at school every day, she doesn't look like a student at all, and often mixes with undesirable young people in society, if it's just like this, Li Xi's private life is also very chaotic, and at the same time she is very close to several male classmates, they often see Li Xi hugging and hugging different boys in the school's playground or grove, and they have been discovered by the teacher, Therefore, Li Xi's parents were also called to come to the school.

In addition, Li Xi has loved to make small reports since she was a child, and often said bad things about other girls behind her back, when she was just a freshman in high school, Li Xi lived in school, but after half a semester, no one wanted to live with her anymore, because Li Xi often told others about some of her roommates' physical characteristics, especially the characteristics of privacy and parts, girls at this age, they all began to develop, and they naturally began to wear underwear, Li Xi often told her roommate what underwear she was wearing today, what style, what color, Even what size to tell others, if it is only a girl, at most it will be complained about, the key is that Li Xi not only told the girls, but also told a lot of boys in the same class, which made these girls unable to raise their heads in the class, because of this matter, the teacher looked for Li Xi more than once, but it was useless, Li Xi still went his own way.

In the eyes of her classmates, Li Xi is a girl with a chaotic private life, likes stinky beauty, and loves gossip, and in the eyes of teachers, Li Xi is a precocious and very rebellious child, who needs the correct guidance of teachers and parents.

According to the feedback of teachers and classmates, the police found the boys who were particularly close to Li Xi, and after some questioning, they admitted that they were indeed very close to Li Xi, and often hugged and hugged together, but did not have sex.

As for Li Xi's parents, Li Xi said on the night of her death that she would go to her classmates to review her homework, according to the investigation, there was no such thing, she should have lied to her parents and went out to play, as for who Li Xi saw before he died, and who attacked and killed him, it is not known for the time being.

The next three deceased people have not yet been identified, and this will require a lot of investigation.

After listening to these reports, Song Feipeng found the following characteristics.

First, the places where the five deceased died were all in the public women's toilet, and although the places of death were not in the same neighborhood, they were all found in the public toilets.

Second, at the scene of the crime, the murderer left the three English letters 's.u.e', as for what these three letters mean, it is not known for the time being.

Third, the five deceased have a butterfly-type tattoo on their ankles, which can be used as a clue to solve the case, but it is of little significance.

Fourth, five deceased, four women and one man, ranging in age from thirty-four to sixteen years old, both underage girls, divorced young women, and adult men, after they were killed, they all had their tongues cut out, although now only the identities of the two deceased have been clarified, according to the investigation, it was found that the two deceased had a characteristic before their deaths, that is, gossip, like to tell right and wrong.

Fifth, the composition of high-concentration ethanol was found in the bodies of the five deceased, and after autopsy, the deceased did not drink alcohol before death, indicating that the murderer could get high-purity ethanol, and high-concentration ethanol is generally a hospital supply, and ordinary people can rarely get it, indicating that the murderer is likely to work in the hospital.

Based on the above characteristics, Song Feipeng summarized the next direction of detection.

First, it is necessary to investigate the identities of the remaining three deceased, mainly to investigate recent reports of disappearances, and to investigate the missing persons.

Second, find a way to figure out what the symbol 's.u.e' that the killer left at the scene means.

Third, according to the butterfly tattoos on the ankles of the deceased, we conducted a visit and investigation of large and small tattoo shops in Changzhou City to find the tattoo shops of the deceased.

Fourth, visit hospitals, clinics, and factories that use high-purity ethanol.

Fifth, check the surveillance footage near the scene of the crime on the night of the incident.

Sixth, investigate whether Ye Jiaying and Li Xi have interpersonal relationships, since they both liked to gossip and tell right and wrong before they were alive, then check to see if there is anyone who knows each other, if there is, then this person is very suspicious.

After Song Feipeng said this, Wu Yong frowned and asked, "There are so many directions to investigate, we only have such a small number of manpower, right..."

Before Wu Yong finished speaking, Song Feipeng said: "We don't have time, Director Zhang only gave us ten days, if the case can't be solved within ten days, you still think about how to explain it to him." ”

Wu Yong was directly speechless by Song Feipeng, and directly stood up and began to assign tasks.

Wu Yong and Lin Dongxue seem to have a tacit understanding in advance, the first criminal investigation team continued to investigate the identity information of the deceased and visited the residents near the crime scene, as well as the interpersonal relationship between Ye Jiaying and Li Xi, while the first criminal investigation team visited the tattoo parlor and the major hospitals, clinics and factories, and the matter of viewing the surveillance video, the two teams did it together, as for the problem of the symbol, it was solved by Song Feipeng, Wu Yong and Lin Dongxue.

After the meeting, everyone began to take action, although the people of the second criminal investigation team were very uncomfortable with the involvement of the first criminal investigation team in this case, but when they heard that there was only ten days to solve the case, everyone felt the urgency of time, and they all started to act without complaining

Get up.

After the first and second criminal investigation teams left, the conference room was suddenly empty, leaving only Song Feipeng and Tang Youyou.

After analyzing the direction of detection, Song Feipeng lowered his head and looked at those files, not noticing Tang Youyou.

Tang Youyou saw that Song Feipeng was pondering, so he didn't bother Song Feipeng, walked to the underground morgue alone, and continued to start the autopsy.

When Song Feipeng looked at the file, he found a strange thing, that is, the first case occurred on June 10, the second case occurred on June 15, the third case occurred on June 23, and the fourth case occurred on June 28, the first and second cases were separated by five days, the third and fourth cases were also separated by five days, and the second case and the third case were separated by eight days, and the fourth case was also separated by eight days. So what is the murderer doing in the interval of five and eight days, is this a pattern, if this is a law of the murderer killing people, then will the next case happen five days later, that is, on July 11th? If this is the case, then there are only five days left before the murderer commits the crime again, no, it should be four days, which makes Seinfeld feel a huge pressure.

Song Feipeng looked at the locations of the five cases, Wenhua Road, Minghua Road, Tianshui Road, Changyang Road, Shima Road, Song Feipeng looked at it, while finding a map of Changzhou City, marked these places on the map, after the marking was completed, Song Feipeng found that the five locations, gathered together, there are four places that can be connected into a cross, Wenhua Road, Minghua, Tianshui Road, Changyang Road, these four places can be connected together, they are located in the east, west, north and south four directions, and the scene of the fifth case Shima Road, located in the middle of Wenhua Road and Minghua Road, if the two roads of Wenhua Road and Minghua Road are regarded as a triangle with a 90-degree angle, then Shima Road is the line that divides this triangle into two.

So, Seinfeld wrote and drew on the map, and soon, a rice-shaped map appeared on the map, and the place where the rice-shaped intersection happened to be the TV station in Changzhou City.

When this result appeared, Song Feipeng was very puzzled, if you look at it according to this map, then the murderer's next crime location is likely to be the area of Xisha Road.

After getting this result, Song Feipeng immediately called Wu Yong and Lin Dongxue, and asked them to focus on the area of Xisha Road next, although everyone was puzzled, they still did it.

After the case analysis meeting ended, the time was also more than two o'clock in the afternoon, and it was already past dinner, and Song Feipeng's stomach made a protest sound, so Song Feipeng stood up and left the conference room.

As soon as Song Feipeng walked out of the conference room, the mobile phone in the open bag rang, Song Feipeng took out the mobile phone and looked at it, with a helpless wry smile on his face, it was no one else who called, it was Gu Yue, the female DJ of the Night Dream Bar.

After the phone was connected, Song Feipeng asked, "What's the matter with me?" ”

"Can't I look for you if it's okay?" Gu Yue asked in a very aggrieved voice on the other end of the phone.

Song Feipeng's face was speechless, and he said helplessly: "Yes, but I'm very busy now." ”

"I know you're busy, and I know you haven't had lunch." Gu Yue said with a smile.

"How do you know?" Song Feipeng asked puzzled.

"Because I'm at the door of the police station, you come out quickly, I brought you something delicious."

"Not good." Song Feipeng touched his nose and said.

"Hurry up."

After saying that, Gu Yue hung up the phone, Song Feipeng put down the phone, shook his head, and had to walk out of the police station to get the so-called delicious food.