Young detective case book

Without turning his head, Su Ye knew that Ye Zihui was looking at him.

To be honest, he didn't like the other party's eyes full of observation and speculation.It reminded him of a vulture staring at a mouse.

However, he was used to it.

Almost all the policemen who knew him would look at him with the same gaze and interest.

That kind of look is actually no different from when they looked at the victim's body.

It seemed as if he wanted to put him under the microscope, analyze bit by bit, ponder bit by bit, and it would be best to cut his brain open again to see clearly every nerve and every structure inside.

"By the way, you don't know yet, right? Team Leader Shao returned to China three days ago." As if suddenly remembering, Ye Zihui smiled at Suye in the rearview mirror, "I was very busy when I came back. , I guess he must not have taken the time to contact you."

Shao Ren did not contact him, but Suye didn't think Shao Ren had any reason to contact him.

At best, they are just ordinary friends who occasionally help each other out.

Shao Ren's return obviously put Ye Zihui in a good mood, he grinned and added with a smile, "Sun Qisen has been transferred back to City S."

Needless to say, Suye also guessed that if Sun Qisen was still in the crime team, he would not ask him for help.

Su Ye still has this bit of self-knowledge.

Having long been used to his taciturnity, Ye Zihui continued to explain, "I just received a report that a female corpse was found in People's Park.

Did you read the news report?In the past three months, four consecutive rape/murder cases occurred in our city. The victims were all female college students aged 19 to 23.

If the victim in People's Park was also a female college student, then it would be the fifth incident. "

When mentioning the case, thinking of those young women who were brutally murdered, the smile on Ye Zihui's face disappeared, and he sighed depressingly, "The death conditions are quite miserable, and it makes people worry when they look at them."

Suye had also heard about the news of female college students being raped/killed one after another, and even paid special attention to the relevant news reports.

However, this kind of news will definitely not be too detailed.

"I don't need to tell you, you should also understand how bad the nature of this kind of case is, how serious the social impact is, and how much pressure the public security department is under." Ye Zihui sighed again, "The leaders of the provinces and cities , Two days and two days, the head of the bureau was called to lecture and ordered to solve the case as soon as possible.

However, can you imagine how difficult it is to solve such a case of randomly selecting victims?

Originally, Sun Qisen was in charge of the case, but after more than two months, no useful clues were found, and the whole investigation work was completely deadlocked.

Just when Team Leader Shao came back, the case was handed over to Team Leader Shao.

This morning, I received a call to the police, saying that another female body was found in People's Park.

Team leader Shao felt dizzy when he heard this, worried that it was the same murderer, so they rushed to the scene and told me to come and pick you up. "

After talking about the cause and effect, Ye Zihui turned his head and pointed to the leather bag thrown on the back seat, "Here, the materials are all inside, let's take a look first."

Suye silently reached out to pick up the leather bag, took out the materials inside and began to flip through the pages.

On July 201, 7x, Sunday, Zhou Xiya, a second-year girl majoring in international finance at University B, was killed in Chengnan Park.

Zhou Xiya, female, Han nationality, 21 years old.

The autopsy results showed that the time of death was between [-]:[-] and [-]:[-] on Saturday night, and the cause of death was mechanical asphyxiation.

The skull was fractured in multiple places, and there were also multiple blow wounds on the body.

The cause of death was blunt instrumental percussion on the back of the head, resulting in direct death.

As a result of the on-site investigation, the possibility of robbery and murder was preliminarily ruled out, and the satchel carried by the deceased showed no signs of being tampered with.

After inspection, there was a wallet in the satchel, which contained 530 yuan in cash, an Industrial/Commercial Bank of China/Bank of China/bank/bank/card, and a mobile phone worth more than 5000 yuan.

In addition, there is a small mirror, a box of concealer cream, a tube of moisturizing lotion, a hand cream, a lipstick, and a pack of heart-to-heart tissues.

The victim was wearing a platinum necklace worth more than 3000 yuan and earrings of the same style, all of which were intact.

The upper body of the victim was fully clothed, and the lower body was naked/naked, but the lower body was covered by the trousers that had been taken off.

This is a move that puzzled the police handling the case. Would the murderer still consider "covering shame" for her?Otherwise, how can this additional behavior be explained?

The victim had obvious signs of being sexually assaulted/violated, her virginity/membrane was injured, and her lower body was stained with blood. It was obviously a case of rape/murder.

The semen/fluid and other secretions belonging to others were not extracted from the victim's body/inside, and it is suspected that the murderer brought a condom/condom, or used in vitro/external/ejaculation/semen.

In the more than two months after Zhou Xiya was killed, three more cases of rape/murder of female college students occurred in succession.

The crime scenes were a children's park in the west of the city, a street under renovation in the north of the city, and a construction site under construction in the south of the city.

Although they were all raped/killed, and the victims had no financial loss, at the beginning, the police did not link these cases together, nor did they think of investigating them together.

First of all, the locations of the crimes are different. Although they are all in city b, they are under the jurisdiction of police stations in different jurisdictions.

Second, the modus operandi varies.

The No.1 deceased, Zhou Xiya, was killed by a blunt instrument blow to the head. After careful inspection of the wound, a small amount of woody debris was extracted.

The wooden stick that was initially suspected to be the murder weapon was left at the scene of the crime.

The investigators extracted bloodstains belonging to Zhou Xiya on the wooden stick, and the DNA test results also matched.

Woody debris extracted from Zhou Xiya's wound was also determined to belong to the stick.

This proves that the wooden stick was indeed the murder weapon that killed Zhou Xiya.

No.2 Victim Ma, female, Han nationality, aged 22, a third-year student of University of Science and Technology in City B.

The location of the murder was a children's park in the west of the city.

The cause of death was mechanical suffocation, and the victim had obvious strangulation marks on the neck, apparently strangled to death.

According to the trace inspection results, it is suspected to be a nylon rope.

No murder/weapon was found near the crime scene, and it was judged to be taken away by the murderer.

Although the victim was also raped, the details of Zhou Xiya's case are different.

The clothes on the victim's upper body were lifted up above the chest, and the clothes on the lower body fell below the knees, and there were obvious abrasions on the inner thighs.

The secretions and body/fluids of the suspected murderer were extracted from the genitals.

No.3 Victim Xie, female, Buyi ethnicity, 21 years old, second-year student of Agricultural University in city b.

The victim was killed on the side of a road under renovation in the north of the city.

There were two obvious pinch marks on the victim's neck, and there was no doubt that he was strangled to death.

Generally, fingerprints can only be retained on the skin for an hour, and the longest is no more than 10 minutes, so even if the murderer does not wear gloves, it is impossible to extract fingerprints of practical value.

The victim's virginity/female/membrane was old and ruptured, and there were traces of being sexually/aggressed/violated before death, but no secretion/secretion/body/fluid belonging to others was extracted from the genitals.

In addition, the victim's hands were sawed off by a tool suspected of being a chainsaw, and the severed hands were thrown into a nearby trash can.This is the biggest difference from the previous two cases - the murderer maliciously destroyed the corpse.

No.4 Victim Fan, female, Han nationality, [-] years old, a first-year student at Normal University in City B.The location of the victim was a construction site under construction in the south of the city.

The victim was stabbed to death in the chest and abdomen with a fruit knife, and the fruit knife used as the murder weapon was stuck in her body.

The upper body of the victim was fully clothed, and the lower body was naked. The clothes that were taken off were discarded near the corpse.

Like the third case, the victim was also mutilated, her left leg was sawed off, and the severed limb was put together with discarded clothes.

She also has traces of being sexually assaulted, but, like No.1 and No.3 victims, she did not extract other people's body/fluid or secretion/substance.

To sum up, in these cases, although the victims were all female college students who were raped and murdered, the modus operandi was completely different.

There were blunt force beatings, strangulation, strangulation, and fruit knife stabbing.

Some murder weapons were taken away, while others were left behind.

In the first case there was pity for the victim, in the second there was no such pity at all, in the third and fourth there was hatred in the nakedest form.

The details of the crime scene are completely different and do not conform to the pattern of the same murderer's crime.

What connects these cases together is that in the third case, there was a suspected scratch left by a sharp blunt instrument such as an awl on the left arm of the victim-trb3.

For the three English letters, the police have not yet been able to interpret their meanings, but the number 3 cannot but remind them of the previous two rape/murder cases of female college students.

Then, after the No.4 victim appeared, the police's speculation was confirmed.

On the same part of her left arm, the same letters and sequence numbers appeared again - trb4.

***

Suye has been concentrating on reading the case materials, occasionally raising his head, looking out of the car window, as if thinking about something.

Ye Zihui didn't want to disturb him, so he had to drive silently.

It wasn't until the police car stopped at the entrance of the People's Park that Su Ye put down the materials and rubbed his temples a little tiredly.

Ye Zihui honked the horn twice, and the park ranger heard the noise, ran out of the guard room and opened the gate.

As soon as Ye Zihui stepped on the clutch and shifted gears, Suye suddenly said, "Let's go in."

Ye Zihui was stunned for a moment, before he could react, Suye had already opened the car door on his side and got out of the car alone.