"Serial killer, what is the basic definition?"

"At least three murders, and during the commission of the crime, there is a 'cooling-off period'!"

Tang Xiaonian replied, and what was said in the textbook at the time, word for word, "The cooling-off period refers to the period between two murders, and the length of respite for serial killers varies, the short may be a day or two, or even a few hours, and the long one is a month, or even several months. After the murder experience reaches a peak, it takes a period of time to calm down, reminisce and summarize the exuberant experience, and improve the method of committing the crime, which is also called crime escalation, which is the judgment condition of most serial killers. ”

"Very good, the theory is good", the man bowed his head and glanced at her with a dark gaze, "but what is more important in solving the case?" ”

"The performance on the scene and the combination of evidence are the benchmarks for judging the case!"

Tang Xiaonian continued, "But these three times, the first two times, the scene was because of the destruction of the factory and the construction, there was no monitoring, no traces were left, this time, also because of the cleaning of the tenants, monitoring the recently installed dead ends, there is no evidence, only by the means and the murderer's way of committing the crime!" Although the time of death of the victim in this third case has not been determined, the method, the interval of three months, the method of dismembering the body, and the brutal performance of cutting off the head ...... All unified, enough to judge, this is a serial killer case, yes! ”

She stated, also coldly, "That is to say, in three months, the killer will go through a cooling-off period, and after three months, he will commit crimes again, and even develop into shorter, more escalated and more cruel methods!" Therefore, I am sure that I have to report back to the bureau, because we must pay attention to it, notify the public, strengthen precautions, and start the pursuit in an all-round way, so as not to have more innocent victims! ”

After all, another characteristic of a serial killer who chooses his victim -

It is to choose people who are easy to match their target characteristics, not purposeful, but random!

This kind of randomness and unknown is more dangerous.

"There is no trace of the scene?"

He raised his eyebrows and looked at her, "So, the structural changes to the four walls, the deliberate cover-up of the furniture after it was moved, and the differences in criminal methods were all directly ignored by you, the so-called captain of the criminal police?" ”

He asked, directly stunned Tang Xiaonian!

Lao Bai and Er Jiang were also stunned, and they couldn't help but think back, "Wall...... Four wall changes? ”

"Isn't there only one side of this wall that has been moved?"

Jiang Jingchen was puzzled, "A layer of thickening is added, and the cement containing the corpse is built......"

"And the furniture, the owners and tenants say, it's always been placed like this, and it hasn't been touched. What did the murderer use to cover up? "Jiang Tianhe is also strange!

"The modus operandi of the crime should indeed be similar to the previous two", Lao Bai concluded, and also raised his head, "Otherwise, I won't deliberately cut off the head and take it away, after all, the corpse has been stirred and broken, so there is no need to be so troublesome, this is the representative behavior of this serial murderer." ”

Tang Xiaonian also bowed his head and nodded, "In our team, we have confirmed with the homeowner and the property, when this house was bought, it was such a structure, except for that wall, nothing else has changed, and when there was a dispute, the construction experts found by the property also measured and brought the construction drawings, and it was determined that it must be so!" ”

The three of them asked again and again, and their eyes were all cast on the man in the wheelchair!

The man was very calm, and in his eyes, there was an arrogant calm in his eyes that surpassed everyone's IQ, and he slowly replied, "In the eyes, it is not necessarily true, not to mention, it is the naked eye of a layman." ”

Tang Xiaonian was dumbfounded, not knowing if he was talking about the owner or if he was sarcastic about the people of their eighth team.

"The homeowners can't see it, and the construction experts can't see it, because a few months ago, the killers remodeled the place, dismantled the structure, and then restored it."

"What ——!?"

The four of them shouted in unison, thinking it was even more incredible, "After dismantling, restore ——?! ”