The deceased were all young women between the ages of 20 and 26.

And the state of life before death was to live alone.

The definition of this kind of living alone is not to be single, but on the day of death, they are all at home by themselves.

The body was found by a boyfriend who came back the next day, as well as a roommate who cooperated.

The first two deceased, after their investigation, did not have very complicated social relations.

There is no enemy either, and both of them have just graduated, one is a front desk and the other is an administrative assistant.

The cause of death, the first two died of throat cuts, and multiple stab wounds were also found on their bodies.

The murder weapon has also been found, and after DNA testing, it was found that the blood on the murder weapon matched the blood on the deceased's body.

The murder weapons are all knives, but the types are different, and the first murder weapon that killed the victim was a watermelon knife about 30 centimeters long and a single edge.

Upon investigation, it was determined that it was a fruit knife often used by the deceased to cut fruit.

The murder weapon of the second victim was a 10-centimeter-long household kitchen knife, which was confirmed to be a knife placed by the victim in the kitchen.

There were no fingerprints on the murder weapon, and there were no traces left by the killer at the scene.

Although the two homicide cases wanted to die in terms of modus operandi, and the victims also had corresponding commonalities, there were no cases of illness because of the lack of contact.

But counting today's case, it is impossible not to merge the case.

Zhang Rang, the detachment leader played by Xia Feng in this script mission, is a 32-year-old single person with a relatively hot personality and a resolute attitude.

Many leaders in the bureau both like and dislike him, they like him because they can do things, and they don't like him because he has a character that no one in their eyes.

But the policemen under him were in awe of him.

Three serious murder cases occurred in a row in two days, and the leaders of the bureau naturally exploded and ordered the Fucheng Criminal Police Detachment to find the murderer in the shortest possible time.

It is said to be "the shortest", but no specific deadline is given, and those who know know that things have not yet reached the point of burning the eyebrows above.

After all, the death of two people is not a small number for the current society, but it has not caused much movement and aroused public opinion from all sides.

But if there are more people, say, from two people to three, four people, then the situation is undoubtedly serious.

Zhou Zhibin habitually asked Xia Feng, but Xia Feng didn't pay attention to him as if he hadn't heard it.

Seeing this, Zhou Zhibin didn't dare to talk nonsense, took out a box of cigarettes from his pocket, and respectfully handed it to Xia Feng:

"Head, smoke a cigarette to distract your thoughts, help you think."

Xia Feng wanted to refuse, but he didn't know what he thought of, so he took it, and Zhou Zhibin immediately stepped forward to help light it with courtesy.

After trying to take a puff, Xia Feng, as an old smoking gun before, although he hadn't smoked for a while, he didn't choke and cough.

It's just that the inside of his mouth is bitter, and he only takes one puff, then throws the cigarette on the ground and steps on it.

"I've been too close lately, so the grade has come down."

Zhou Zhibin thought that Xia Feng thought that his cigarettes were not good for smoking, so he explained a little embarrassed.

"I'll tell you the above when I go back, you can merge the cases."

Xia Feng turned the topic to the case again.

"Head, do you think this was done by one person?"

The police are not like the detectives in their pen, mainly based on logical thinking and deduction, supplemented by evidence.

It's the other way around, even if most people look at it like this, and the police rarely say what happened until they have definitive evidence to prove it.

In such a matter as the merger of cases, the basic characteristics of serial cases must first be satisfied, and the most important one is that there is a correlation between the cases.

Secondly, there are similarities in modus operandi and tools.

In general criminal cases, there is cause and effect, such as rarely killing another person for no reason.

Not to mention two people, or more.

Therefore, this connection is the primary factor for the police to consider merging the cases and identifying them as serial cases.

Of course, it is not excluded that there is a kind of perverted murderer.

It's just that there are relatively few, especially the killers who know how to counter-reconnaissance.

Generally speaking, more than 90% of the cases that come into a perfect crime will become an unsolved case.

Because when scientific criminal investigation methods cannot be used, and logical deduction cannot be deduced, unless it is really calculated, it cannot be broken at all.

Merging multiple cases together is tantamount to returning to a whole from the initial divergent thinking.

It is almost equivalent to determining an initial direction of detection.

If this reconnaissance goes in the wrong direction, then all subsequent efforts will be in vain.

Therefore, few people dare to make a rash decision, the punishment is small, and if they miss the golden time to solve the case, it is likely that a case will become an unsolved case.

The culpability is great.

Zhang Rang didn't look at it as an old criminal policeman who had been working for ten years, starting from being a special intelligence officer, and climbing step by step from the front line to the position of detachment leader.

was resolute in the team, and he was not polite to the leader, but he didn't dare to take the liberty of slapping this board.

But Xia Feng is not Zhang Rang, he knows in his heart that whether this so-called throat-cutting case or a serial murder case, the murderer is not a human being, but an evil one.

Even if there is a human element, it must be evil to do it.

Xia Feng has also experienced several script tasks, and the main tone of the script task is "suspense".

Because it is divided into main line and branch line.

But whether the main line is in the Ming or the branch line is in the Ming is uncertain and suspenseful, and most of them are in the judgment and derivation of the main line and branches.

Of course, there are times when things are not absolute, such as the two basilisks he killed for the first time, there is no derivation process, and it is just over after death.

But most of the script tasks he participated in after that required his brain.

But no matter what, there is one thing that remains the same in the script mission.

That is the evil in the script mission, you must find it, either receive it in the underworld like Xiaobai, or kill it directly like other evils.

So thinking about the main line and the branch line is put aside for the time being, and what he needs to think about at the moment is how to find out the evil that kills people.

Find out the evil, even if it is only a branch of the script task, and then go down the vine to find out the main line, it can be a lot easier.

He is also an old driver in solving this point, as long as he drives steadily, it is not easy to overturn.

The scene of the crime was here, basically nothing to see, Xia Feng didn't stay long, and then drove back to the detachment with Zhou Zhibin.

Zhang Rang has an office of his own, and the curtains of the office have been drawn for many years, and the team is reluctant to come in except for reports or some necessary situations.

Because it will feel very depressing.

Others suspect that Zhang Rang has some shadow in his heart, or some kind of habit, but in fact, this kind of depressing scene can only make Zhang Rang calm down and think about the case as much as possible.

And, of course, you can sleep on your desk.