Immediately after returning to the police station, the captain organized a meeting......

Xiao Su held a report in the conference room and said: "After comparing the male body fluids left in the lower body of the deceased at the scene of the two murders, it can be determined that the two murders were committed by the same person." ”

After I waited for Xiao Su to finish speaking, I opened the details of the two cases and began to check them......

And the captain was also looking down and pondering something......

The two crime scenes are located in two different urban districts of our city, and the murderer did not have a specific murder weapon, and it seems that he randomly chose the tool of the crime to kill the victim, and now there is no clue at all......

Seeing that everyone was silent, the captain turned to me and asked, "Do you have anything to say?" ”

I sorted out my thoughts and said: "I think the murderer should be a person who has no normal industry, because he takes the cash from the victim's family every time, which shows that he needs to live, maybe he is living in embarrassment, after all, the second victim only has more than 300 cash at home, and he also took it all." Also, he should not be very old, and his physical desire is very strong, so he committed the crime again only three days ago. ”

"Very good, Xiaomei, your analysis is exactly the same as that of this captain, is there anything else you need to add?" When the captain heard what I said, he immediately clapped his hands and said.

I smiled awkwardly and continued, "Let's assume that if the murderer is a person who gets money by burglary, then I estimate that it won't take long for him to take the more than 300 yuan from the victim's house for the second time. He should soon commit another crime. But this murderer has certain anti-reconnaissance skills, and the places he chooses to infiltrate are all old towns and shanty towns. And he only takes cash and nothing else. It's a bit tricky. ”

After listening to my words, the captain frowned and said, "On the one hand, continue to visit the fruit supermarket. On the other hand, Xiao Su, you go to the police stations in various jurisdictions to issue notices for assistance investigations, and ask them to send people to patrol the shantytowns, old towns and other areas of our city 24 hours a day, and arrest suspicious people immediately if they find them. Meeting. ”

After the captain finished speaking, we left the conference room one after another. Xiao Su went to issue the notice of assistance in the investigation, while I sat in the office and continued to analyze the case......

It has been a day since the notice of assistance was issued, but in just one day, the same case of assault on women has happened again......

This time the scene was also in an old residential building with no surveillance, and the scene this time was absolutely beyond imagination......

When we arrived at the scene, we saw that the deceased, a young woman, had a wire wrapped around her neck, which should have been strangled alive, and there were still blood stains on the deceased's lower body, which was obviously in the menstrual period. Blood was everywhere. The cucumbers and sausages in the house were also scattered all over the ground, and I don't know why there was blood on them......

"Chief, the time of death of the deceased was within five hours. He had been violated, and after committing the assault, the murderer also inserted these cucumbers and sausages on the ground into the body of the deceased, and carried out serious perverted acts. After Xiao Su asked about the situation, he immediately reported it to the captain.

And after I Xiao Su finished speaking, I also nodded and said: "The informant is the father of the deceased, and after the informant counted his belongings, only more than 3,000 yuan in cash was lost in the family. It should be done by one person. However, there were several fingerprints stained with black substance on the deceased's mouth and face, which should have been left by the murderer. It's already been collected. ”

After I finished talking to Xiao Su this time, the captain uncharacteristically squatted down and observed the deceased's body and the scene environment......

The captain looked at the corpse and asked, "What is the height of the deceased?" ”

A medical examiner hurriedly replied, "The net amount is 172 centimeters." ”

The captain nodded, and began to observe the traces of the deceased as he was strangled......

After a while, the captain spoke: "According to the strangulation marks on the neck of the deceased, the murderer strangled the deceased from behind, but the traces of the strangulation line are inclined downward, indicating that the murderer's height is lower than that of the deceased." His height should be around 165 cm to 168 cm. Let's go back and research. ”

After the captain finished speaking, we returned to the police station, and on the way back, the captain did not say a word, as if he was thinking about something......

When I returned to the police station, I combined the height of the murderer mentioned by the captain and my previous analysis to arrive at a vague portrait of the suspect: short stature, low financial income, and even no normal occupation. Young, with strong physical desires......

Just as I was thinking, Xiao Su came over and said: "After technical comparison, the black substance rubbed on the deceased's face is liquid car tire wax. ”

After listening to Xiao Su's words, the captain nodded and said, "The murderer must not have a car." Maybe the murderer is working in a car wash, or he just went to help temporarily, so I don't know when I got the wax on my hands. Immediately check all the staff of car washes in our city and take fingerprints one by one. By the way, it is important to check whether these people have entered work-study schools and are younger. Xiao Su said that the fingerprints of the murderer could not be found in the database of filing personnel, but the murderer still had a little anti-reconnaissance ability, and it is estimated that he had entered a juvenile management department such as a work-study school. ”

"Boss, I see you're getting smarter." After listening to the captain's words, Xiao Su said with a smile.

Xiao Su and I nodded and exited the captain's office. Began to ask the police stations in each jurisdiction to help investigate together......

According to the points described by the captain, the team visited and checked and took fingerprints. Finally, we were able to find the suspect and immediately bring him back to the police station for interrogation......

After a while, Xiao Su came out of the interrogation room and said to me, "Admit it, hey......"

I listened to Xiao Su's tone and asked, "What's the matter?" What are you doing? ”

Xiao Su said to me: "The murderer is seventeen years old this year, his mother gave birth to him out of wedlock, and he never knew who his father was. After his mother gave birth to him, she left him and left him to be raised at his grandmother's house. ”

"And then? Supposedly, in this case, grandma should be very fond of him. I asked.

Xiao Su said a little depressed: "Yes, it's a pity that his grandmother lives with his son." His uncle and aunt always scolded him for being a wild seed and dragging an oil bottle or something, and he grew up in that environment since he was a child, so he began to rebel when he reached adolescence. At the age of fourteen, he entered a work-study school, and after he came out, he wandered in the society, and he had no skills, so he went to a car wash to do odd jobs. ”

I listened to Xiao Su's words, nodded and said, "What does this have to do with the three deceased?" Why did he kill these three people? ”

Xiao Su immediately replied to me: "It matters, these three deceased people have all verbally insulted him. The first deceased accidentally touched something when he was shopping at a fruit supermarket, and the deceased scolded him for being uneducated and wild seeds. In short, the three deceased were largely killed in this way. They may have said something unintentionally, but they just touched that untouchable point in the murderer's psyche. ”

After listening to Xiao Su's words, I began to bow my head and write the closing report......

There's an old saying that trouble comes out. In fact, most of us sometimes make a mistake and like to use our mouths to offend or mean others. People who speak harshly to others are often hated by others, and sometimes words bring more harm to people than murder......

Adapted from the case of a foreign mixed-race juvenile, welcome to complain!!

(End of chapter)