The clouds are low and twilight, and the snow is dancing back to the wind.

The city, which was once the most prosperous, is now sparsely populated because of the approaching Spring Festival, and the roads are also clear, and a heavy snow is falling in the sky, making the ground white.

Suddenly, seven or eight police cars sped down the road and headed for the outskirts, followed by a helicopter behind the police cars, as if something emergency had happened.

Soon, the police cars arrived at a frozen lake on the outskirts of the city, where they targeted a villa on the edge of the lake.

"Quick!

In a burst of shouting, more than 20 heavily armed police officers ran out of the car, they surrounded the villa from all sides, and at the same time a group broke through the main entrance, and on the roof of another building 50 meters away, the snipers were also quickly in position, the scope of the sniper rifle locked on a window of the villa, where the curtains were tightened, but the figure could be seen shaking, and the helicopter hovered in mid-air, using infrared scanning to detect the situation in the villa.

"Attention, the target has four hostages, we must not act rashly!"

Liu Changshan, now thirty-nine years old, one of the most murderous serial killers of all time, is extremely good at counter-investigation, he has a high IQ and has already entered high school at the age of thirteen, and the earliest known criminal record is twenty-five years ago.

On the day of his fourteenth birthday, Liu Changshan killed his parents, and dug out his brain parts, poured into the cake, and then the child evaporated from the world, until five years later, a homeless man was killed in the case, only to let people see him again at the age of nineteen, since then he has been crazy to kill, the target is about 40 years old and a couple, in a letter to the police once said: These parents are in a hypocritical face to love their children, in fact, they are all for their old age to have a way back, not real selfless love, I have the obligation to clean up this garbage in their brains。

In the next two decades, according to the current known statistics, Liu Changshan killed more than 174 couples nationwide, and the police boldly speculated that the actual number was at least 200 or more.

In order to arrest such a serial murderer, the Ministry of Public Security has set up a special team of more than 100 people, assisting more than 2,000 people, but in the past 20 years, Liu Changshan has been one step ahead of the police in every case, and his course of action is irregular, and some people suspect that he may have decided by throwing coins, so it is extremely difficult to pursue him.

However, all this is in the past tense, because today this serial killer has finally been discovered and surrounded, and the task force will definitely not let him go.

At this time, in the villa, a team of seven people had quickly climbed to the second floor, their eyes were like eagles, their guns were aimed ahead, and they quickly arrived at the door of the room marked by the helicopter thermal image.

Of the six, three were to assist the special police, and the other four were core members of the task force, the most notable of which were two young men who looked to be in their early twenties.

"He was in there, probably four hostages, a couple, and two small children of about ten years old. A handsome young man in a white shirt with a few pimples and dark circles on his face said as he made a few gestures to the others.

Song Yi, an important member of the Behavior Analysis Department who assisted the task force, had an IQ of 178 that allowed him to earn a doctorate in engineering and sociology before the age of twenty-two.

"Listen, is there any sound inside?" said the other young man who pressed his ear to the wall next to the door, which was soundproof, but it was not a hindrance to him, who had an absolute sense of sound.

The young man's name is Lu Yuan, and his natural absolute sense of tone made him a piano genius as a child, in addition to his transcendent memory that he can remember any order of a deck of playing cards in twenty seconds, because he is good at reshaping the scene, so he has been selected into the behavior analysis team at the age of twenty to help hunt down criminals.

"Be careful, someone's coming. Lu Yuan soon heard someone walking around the room, and the sound gradually approached, and from the rhythm and size of the voice, he could already directly judge...

"It's a child. ”

Click.

Lu Yuan's words fell, the door had been opened, Song Yi and the others saw that it was indeed a teenage girl, but when they saw the things tied to the little girl's body, they couldn't help but shrink their pupils.

That's a bomb strapped to it!

"This bastard!"

Song Yi was extremely angry, but he was helpless, there was no timer on the bomb, obviously the control switch was in Liu Changshan's hands, as for the appearance of the bomb, he was not surprised, Liu Changshan was originally a genius, in the past 20 years, especially in the five years since he disappeared, no one knows where he went, and what techniques he learned that are extremely harmful to society, at least from the point of view that he can dig out human brains, this guy must have learned some medical knowledge.

"Uncle said... Let Brother Song Yi... Come in with Brother Lu Yuan..."The little girl's body trembled a little, she looked at Song Yi and the others, and said tremblingly.

Hearing this, Song Yi and the others also looked at each other, and through the walkie-talkie that was always on, the situation here was quickly known to the outside world.

"The bomb switch on the little girl's body must be in Liu Changshan's hands, it's very dangerous inside, don't go in yet!" A somewhat thick voice came out of the walkie-talkie, it was Wang Hanyuan who spoke, he was the leader of the task force, he had just arrived and was standing outside the villa at this time, his wrinkled face was a little worried, Song Yi and Lu Yuan were both cultivated by him, and he didn't want any accidents.

"Old man, these are four lives, no matter what, I have to go in and have a look. Song Yi didn't care about Wang Hanyuan's order, there was only determination left in his sharp eyes, he turned the doorknob with his hand, and gently pushed the door in.

"Song Yi, did you hear what I said? I already said no..." Wang Hanyuan's voice came out of the walkie-talkie again, and before he could finish speaking, Song Yi had already turned off the walkie-talkie, and he handed the gun in his hand to the special police officer behind him, and Lu Yuan did the same when he saw this.

In this way, Song Yi and the two wore only body armor, and followed the little girl into the dimly lit room together, they closed the door of the room, and the first thing that caught their eyes was a table with a birthday cake, which was lit with colorful candles, and on the ground next to the table, the kidnapped couple and their thirteen-year-old son were already unconscious.

"Happy birthday to you~ Happy birthday to you...~"

The brisk humming sound came, Song Yi and the others turned their eyes, and finally saw the beast who had been hunted by the task force for many years, he was holding a gun in his hand, leaning on a sofa, humming a happy birthday song, and as soon as Song Yi and the others walked in, he cast his gaze.

"Hello, two little geniuses from the behavioral analysis team, sit down. Liu Changshan looked at Song Yi and the others, as a serial killer who had been on the run for twenty years, he didn't look so frightening, but had a certain gentlemanly demeanor, but Song Yi and them, this beast relied on this image to get close to their prey, and then hunt them one by one.

Liu Changshan's sins are probably not enough to punish him even under the eighteenth layer of hell.

"Let them go, and we'll be your hostages. Song Yi didn't beat around the bush and said directly.

"Do you think I called you in to discuss the hostages?" Liu Changshan smiled slightly.

"You have been surrounded, to be honest, no matter whether you let go of the hostages or not, I don't think anyone outside will let you get out of here alive, what tricks do you want to play?" Lu Yuan looked at Liu Changshan, his eyes narrowed slightly: "To give you a sincere suggestion, it is the best choice to be captured." ”

Hearing this, Liu Changshan raised his hand, revealing a small bracelet: "Little geniuses, tell me what this is?"

"Smart bracelets... Could it be?" Seeing the small bracelet in Liu Changshan's hand, Song Yi immediately understood, he was surprised that he didn't find that Liu Changshan had a switch to control the bomb in his hand just now, it turned out that he installed the switch on his bracelet, which is completely possible with current technology.

Song Yi had already guessed that the switch of the bomb was Liu Changshan's own heart rate, if Liu Changshan's heart rate fluctuated too much, or stopped, then the switch would be triggered directly, and the bomb on the little girl's body would directly raze it to the ground.

"What do you want to talk to us about?" Song Yi sat down on a sofa opposite him as Liu Changshan said, he looked at the little girl in the corner of the room again, the latter's face was still fearful, next to Song Yi, Lu Yuan did not sit down, he just looked at Liu Changshan, observing everything about him.

"The Behavior Analysis Department, established for three years, is mainly responsible for providing criminal investigation and analysis for the criminal investigation department, and the specific implementation is to review the crime process from the behavior, and then combine the basis of psychology to write out the age, psychological condition, work situation, living habits of the offender, etc., and finally the police can use these characteristics to eliminate the most suitable criminals to describe ..."Liu Changshan looked at Song Yi and the two and smiled slightly.

"You know us well. Song Yi listened to Liu Changshan's description and raised his eyebrows.

"I have to understand that I have been playing games with the police for 20 years, and they haven't even touched a single hair of me, and since the establishment of the Behavior Analysis Department three years ago, I have been embarrassed by you at least four or five times. Liu Changshan said.

"Thank you for the compliment. Song Yi looked at Liu Changshan and asked, "So you deliberately went out because you lost the confidence to run away and felt that if you continued like this, you would be caught one day?"

Liu Changshan smiled again.

"Don't get me wrong, I just think it's weird, before we had to find you, it didn't seem to be as easy as now, we were like hunters and prey chasing each other in the dark forest, but for the prey, its various senses are always sharper than the hunter, so every time the hunter approached, the prey ran away, and this time, the prey would light a torch and tell the hunter in the dark where it was. Song Yi shrugged his shoulders: "So I'm curious, what hole cards do you have to get out of this encirclement, if you rely on a small bracelet, I won't tell you, I'm a little worried about you." ”

Liu Changshan's original smile only lasted for a moment before turning serious, he looked at Song Yi and the others, and said:

"When did I say I was going to run away?"