Criminal Investigation Notes

"My parents divorced a long time ago, and I was brought up by my father. At that time, my father wanted to adopt him, but because he didn't meet the conditions, he didn't go through the transfer procedures. We grew up together, and later he was admitted to university. I My father also passed away, so we didn’t have much contact, but we would have dinner together during the holidays, like a family reunion, two helpless people huddled together to keep warm. Later he dropped out of school, but suddenly became very rich, Two years ago, I happened to look at his phone and realized he'd been doing that kind of thing..."

Lan An said tremblingly: "Later, I sold the house my father left behind and bought another one. I used the excuse of moving to a new house, invited him to dinner, and took the opportunity to give him medicine..."

At that time, she went to buy a new house, and went to a place where no one knew them. She arranged a room with good sound insulation and only one small window. She hid all the metal objects in the room, only Beds and bedding were left.

She bought a chain, the best locks, and a collar, and the chain went through the head of the bed and fastened together.

The length she tried repeatedly, she can walk to the bathroom to take a shower and go to the toilet, and she can change clothes and live a normal life.

After locking Song Lanen in the room, she was very careful, even if she delivered him meals, she only used plastic tableware.

She tried her best to cut off all communication between him and the outside world.

She knew that a person like Song Lanen would not choose to call the police, nor could he ask his neighbors for help. Once discovered, what he did would face exposure.

There is only an electric razor in the bathroom.

Song Lanen should be very angry, he began to refuse to eat anything.

Lan An and Song Lanen had a cold war for a long time. She sometimes heard the sound of him grinding the iron chain in her sleep, and couldn't fall asleep for a long time.

In the end, they all seemed relieved, like two roommates living under the same roof.

Before going to work every day, she would put the meals and a change of clothes outside the door, and when she came back from get off work, she would see the used tableware and changed clothes.

She occasionally left a few recent newspapers, and some books.

Sometimes she would sit by the door, babbling about her life, how the workshop's business was recently, and how the children were doing.

But there was no sound or response from inside the door.

Such a life with almost no communication, they lived for two years.

The only time Lan An entered that room was because Song Lanen was ill. Lan An found that the food had not been moved for two days, so he entered the room.Song Lanen's high fever persisted, she was frightened, bought anti-fever medicine, and took care of him for three days.

Only in those three days, they seemed to have returned to their childhood, before everything happened.

Three days later, Song Lanen's fever finally subsided, but Lan An fell asleep lying on the bedside exhaustedly. When she woke up, she found Song Lanen looking at her.

He reached out, held her hair, and put his fingers on her neck.

Just when she thought he was going to kiss him.

He rolled his eyes and looked at her. It was definitely not a loving look, but a fierce look, like a wild beast staring at its prey.

She was momentarily frightened.

He gritted his teeth and said to her, "Get out."

She ran out of the room and cried for a long time.

Then, everything went back to normal.

After thinking about it, she always felt that it was not safe enough. She was afraid that one day someone would find out what Song Lanen had done, and she wanted to help him take the blame. She was also afraid that if she was not there, Song Lanen would starve to death and be arrested, so she stayed with Liu Yumei. got a key.

Recalling all this, Lan An kept crying.

She has brought the blame upon herself, and even if she dies a thousand times or ten thousand times, she will not be able to atone for her sins.

Her behavior not only let go of the devil Song Lanen, but also killed Liu Yumei.

Maybe then, after she drugged him, calling the police would have made all the difference.

Su Hui looked at the files in front of him.

Song Lanen, 27 years old, majored in chemistry, but was expelled from school two years later because he failed many exams.

He learned how to make bombs from Lan An's father Lan Ziwen since he was a child, and then modified and manufactured them based on the chemical knowledge he had learned. He continued to improve the power of the bomb and optimize its structure.

He's sociopathic, crazy, and cunning.

He had been supplying Xie Qiu with explosives, allowing the man to roam the city, and a series of fine sand bombings had erupted.

This is a typical organized indiscriminate killing.

Lan An was finally willing to speak, and Lu Junchi immediately asked, and prepared Song Lanen's information and photos at the first time, preparing to launch a wanted arrest.

Lu Junchi asked, "Where will Song Lanen go?"

Lan An shook his head: "I don't know, I haven't been in his circle of friends since he dropped out of college."

While she was crying, she felt fear in her heart. It was her actions that caused a catastrophe today.

The demon was freed, as if released from Pandora's box, she thought, he would create new explosions in the city...

"Where's his cell phone and other things?" Lu Junchi asked again.

"I... threw away his mobile phone... and flushed the SIM card in the toilet. I confiscated his ID card... As his girlfriend, I returned the house he rented." Lan An cried Said, "I thought I cut him off from all contact with the outside world..."

She used to only want this man to live, even if he was imprisoned for a lifetime, as long as no one knew about his crimes...

"Who is his accomplice?" Lu Junchi asked sharply.

Song Lanen undoubtedly contacted other people.

"I really don't know. At that time, apart from Xie Qiu, there were some other people he was in contact with. I don't know those people, but I know that there are men and women among them..."

The interrogators changed again, but they could no longer ask the identity of Song Lanen's accomplices.

Maybe Lan An really didn't know much about it.

Qiao Ze was filled with righteous indignation: "This woman is evil without knowing it. It's simply too hateful. I feel disgusted when I think of the things she did. But she is still crying wronged."

In his opinion, such a person is more difficult to guard against than a real murderer.

Su Hui analyzed: "She fell in love with Song Lanen not only because of their contact when they were young. I think this woman has a morbid love for serial killers and unrealistic fantasies. She fantasizes that her actions can make him reform. .In history, there are not a few people who like serial killers, and some women even want to marry serial killers. Psychologists have done many analyzes on this kind of psychology: rescue fantasy, maternal needs, substitution fantasy, etc... "

However, due to the small number of people and the lack of research cases, the specific psychological reasons for this behavior are still difficult to determine.

Investigative journalist Sheila Isenberg, author of a book titled "Women Who Loved a Murderer," writes: "These women's romances with murderers are satisfying in a way. meet their needs."

What Lan An did to Song Lanen and wanted to cover up her crimes was not out of public safety considerations, but only for her personal satisfaction and self-movement.

Lu Junchi agreed: "She did such a thing, and the law will punish her..."

Then they asked some fragmentary information from Dong Yuchen.

It was he who gave Song Lanen the sand from the small window, and Song Lanen gave him the two bombs, telling him to do so, and Yu Keke's problem would be solved.

After the incident, Song Lanen asked Dong Yuchen, who was shocked and frightened, to push everything on Lan An.

It seems that not only ordinary people cannot understand her behavior, serial killers may not appreciate it either.

When Lu Junchi came out of the observation room, he saw Su Hui standing alone in front of the whiteboard in the conference room. This whiteboard was left by Xing Yunhai, and his handwriting was still on it.

Only one light was turned on in the meeting room, and it was a bit dim, making his back very thin.

Lu Junchi couldn't help walking over, looking at his handsome profile.

Su Hui squinted his eyes and turned his head, confirming that it was Lu Junchi who came, and turned his head again.

They learned of Xisha's true identity today, and the case has made great progress, but no one is happy. When they caught Lan An and found Xisha's true identity, the pervert also regained his freedom.

As long as they think of such a terrifying and dangerous man still wandering in the city, their hearts are always tugging.

Lu Jun regretted that he had to sleep all night, as long as Song Lanen could be arrested and brought to justice as soon as possible.

Su Hui looked at the whiteboard full of clues in front of him, blinked his eyes and said, "The murderer deliberately disguised the scene, left other people's cigarette butts and hair in order to mislead the police. People who work in this kind of work are called set designers. Two years ago, I thought that there might be a set set that would affect our judgment. But now, I gradually think about some things. Our thinking back then might be wrong ..."

In the past two years, Su Hui's memory was vague and chaotic, but after returning to work, his memory gradually recovered.

Today, he is trying to keep recovering this case.

Although he experienced those setbacks two years later, he was more meticulous and calm.His perspective and way of thinking about problems have also undergone some changes.

Bombing cases are different from many cases. Fingerprints are rarely found in such cases, footprints are difficult to find, and monitoring equipment is easily damaged.The personal and physical evidence of the investigation is very scarce, and the murderer is difficult to be caught.

This kind of bomb in the fine sand case is homemade and has obvious traces of production.Every crime scene will leave the same fine sand, similar installation methods, and similar delivery time.There are many connection points between the cases, which prove that these cases are related.From some sporadic blurred images, it can be known that the murderer acted alone.

The raw materials and production of bombs are not within the grasp of ordinary people.

This method of murder is generally extremely secretive, and in many cases, even close relatives will not know about it.

When the Xisha case happened, in the face of many side evidences, they logically believed that the murderer was withdrawn, away from the crowd, and anti-social. The results of such profiling also made them believe that the murderer acted alone.

They mistakenly believe that the murderer is both the producer and the dispenser.

Under such a premise, they cannot explain and restore the case.

Ordinary bombers have their own unique behaviors, but this Xisha showed a variety of different behaviors in the follow-up crimes, like an extremely cunning fox who is good at disguising.

His crime methods are also diverse. He just injured several people in the downtown area, and found traces of the explosion in the wilderness.

There is no criminal motive, no criminal target, no criminal planning, except that every ten days a bomb must be dropped in this city to disturb the good life of people.

The police were under tremendous pressure, and Su Hui and Yueguang had disagreements during the profiling.

Two years later, Su Hui recalled all this during the interrogation of Lan An.

After he changed his mind, the problem seemed to have finally found a breakthrough point.

I don't know the true face of Lushan, I am only in this mountain.

Back then, he and Yueguang firmly believed in the fact that there was only one murderer, but believed that the various intricate states that followed were the other party's disguise.

But maybe, only one murderer is the biggest misleading given to them by the other party.Other irrationality is undisguised.

What they think is the wrong answer is the right answer.

Su Hui briefly raised his head at this point, Junxiu's face was slightly pale: "Me and Yueguang may not be wrong back then. Xisha was not a bomber, and Song Lanen was a weapon master. These bombs were made by one person, but They were dropped by different people, and the leader was Xie Qiu. Those who dropped the bombs were a small group. Every ten days, one person in the group would receive a bomb and complete the release. Therefore, the case , showing a variety of different profiling results."

Lu Junchi frowned and thought for a moment, then nodded in agreement.

Once there is only one person to overthrow the criminal, the precondition that the contributor is the creator will make people suddenly see the light.

Su Hui continued: "Multiple murderers, this is a more effective method of disrupting the police's line of sight and investigation than the setting. There may have been multiple bombers at the time, and they would hold the same bomb, and in their own way, in the city to deliver."

In history, such criminal acts of cooperation and division of labor are too rare.

This mode is like a group of players squatting and guarding game tasks.

Every ten days, a new bomb will be produced. They will draw lots or choose to let a person bring the bomb, and then place it in a location according to their own choice and according to their own preferences.

Those who receive the task will wander around the city and finally commit crimes.

So their tools and timing have some similarities, but because those people are placed in different ways and choose different targets, they also show different crime patterns.

Their profilers were led into a maze by such a murderous method.

Explained in this way, everything makes sense.

Lu Junchi lowered his head and pondered for a moment. Su Hui's inference sounded surprising, but when he thought about it carefully, he felt that it was very likely to be true. What he said was a hypothesis, so he needed to find actual evidence to prove it. at this point.

"There is a murderer who is cruel by nature and will deliberately choose iconic buildings to place bombs in crowded places, while the other murderer has a trace of humanity and will avoid pregnant women and children when placing bombs. Back then, I just caught I found one of the contributors. On that day, I happened to meet Xieqiu..."

Speaking of this, Su Hui lowered his head and said, "The police did not catch the weapons division and other people, so before this case was not really solved."

Now, with the return of Song Lanen, the core of this organization has also returned.

Lu Junchi collected his thoughts: "Do you think they will commit crimes again soon?"

Su nodded back: "They may have stockpiled a lot of materials. Counting the bomb making and preparation time, we may have about two days..."

With the arrest of Song Lanen and the actions of the police, these people will know immediately that they are being arrested.

Huadu has been completely blocked and strict investigations are underway. If he wants to escape, he will not be able to escape.

It's a contest between good and evil.

It's about human life.

Su Hui covered his lips and coughed a few times, and said his conjecture result: "The worst outcome... Song Lanen has been silent for two years and depressed for two years. This time, they may act together with many people, intending to cause even greater damage. casualties."

It's going to be a wild last hunt.

Listening to Su Hui's narration, Lu Junchi's fingertips felt a chill at first, what kind of unimaginable evil could be transformed into such a shape, but then, blood surged in his chest.

Facing such an enemy, he wanted to solve the case as soon as possible.

They must prevent this disaster.

Lu Junchi said, "Why do you think this group of people did such a thing?"

Only by studying their criminal motives can we effectively find their criminal targets.

Su replied: "I haven't figured it out yet. This organization is both group and individual. Time and purpose will change with the group's thinking, and individual will and ideas will be mixed in and become variables. .”

The purpose of those murderers must not be as simple as taking revenge on society.

"Can you judge how many people participated in this matter?"

Su Hui's thoughts have never been so clear as at this time. Two years ago, he and Yueguang had different opinions, and there were still a few cases that could not be classified into it. He said in a deep voice: "There may be four murderers, except Xie Qiu, there are three more."

At that time, he caught Xie Qiu, who committed the most crimes. Moonlight may also have locked down a murderer, and the other two were still hidden in the dark.

After two years, those scattered sands finally became a line...

Lu Junchi said: "I understand, I will tell the leader, make all preparations, don't be too hard on yourself, let's go eat something."

Su Hui understands that haste makes waste. This is a protracted battle that may last for several days, and he cannot fall halfway.

He thought for a while and said, "Let's have dinner first, but tonight, I want to go somewhere." He paused, raised his head and asked Lu Junchi, "Can you go with me?"

Lu Junchi asked, "Is it related to the case?"

If it was normal, non-working hours, he could stay with Su Hui for as long as he wanted, but now they were pressed for time, and he had to calculate the time accurately.

Lu Junchi knew Su Hui well. He lived in a house, had no family, and no other friends. Except for the headquarters, the scene, and the school, he generally didn't like to wander around.And now that Song Lanen's identity has just been revealed, his mind is also on the case.

What he brought up at this time must be a very important thing.

Su Hui's eyes lowered: "It's related, I want to find someone..."

Lu Junchi asked again, "Is it someone I know?"

Su nodded back: "You know him. He is an old friend of mine. He is also the person who may accelerate us to crack the truth in this situation. The code name he used was—Moonlight."