Criminal Investigation Files

The two of them still walked back the same way they had come. First they took a taxi to the city, and then went to the train station to pick up the tickets.

The bullet train was much cleaner than the old train. Lu Siyu looked at the somewhat noisy environment and said to Song Wen, "Let's go to the dining car. I'll buy you something to drink. There are tables over the dining car where you can write. And At this point, there should not be many people over there, so it is convenient to discuss the case."

Sure enough, as he said, it’s not time for meals now. Compared with ordinary cars, the dining car is much more spacious and quieter. Two people occupy a four-seater seat, and there is a small table in front of it. Lu Siyu ordered for Song Wen Instead of drinks, melon seeds and snacks, I drank the water in the thermos by myself.

Song Wen was a little sleepy at this time, in order not to let himself fall asleep, he opened the notebook casually, and started to draw. The train shook, and the control of the pen tip was much more difficult than usual, but it made the drawn lines more distracting. As desired, after a while, Song Wen drew a girl's face on the paper, it was Lin Wanwan's face, it looked indifferent and pitiful, but her eyes were unfathomable.

The number of train stops is much less than when it came here. The train is driving forward, and the scenery outside the window is constantly changing. From the town to the fertile fields, and then after passing through several caves, Song Wen finished the portrait of the character. Looking up, Lu Siyu sat opposite him, opened the record book, and habitually bit his nails while reading.

Song Wen found that when Lu Siyu was concentrating, he had the habit of biting his fingers. Now he is biting the fingers of his left hand in his mouth, and writing and drawing on the notebook with his right hand. Song Wen looked carefully. Lu Siyu's pair of clean On his slender, well-knit hands, all the nails were bitten to the same level as the fingertips. Under Song Wen's watchful eyes, Lu Siyu put the notebook on the table and said, "I finally figured it out. The matter is still inseparable from Lin Wanwan."

"What?" Hearing this sentence, Song Wen became interested, and leaned forward to look. In the notebook, Lu Siyu drew the relationship between the characters, with Lin Wanwan as the center, with the dormitory on one side and the family on the other.The family made a family tree and marked all the people they know so far.

"Class." Lu Siyu pointed to the picture on the notebook and came to a conclusion.

Song Wen was a little puzzled, and Lu Siyu clicked on the picture again, "The class of the dormitory, and the class of her family."

Song Wen was even more confused when he heard this: "There are only a few people in total, how did classes come into existence?"

"Do you remember I mentioned the gaslight effect?" Lu Siyu asked him.

Song Wen nodded.

Lu Siyu clicked on the names written on the bottom of both sides on the picture: "If the mother is the one who is tortured and manipulated in the family, then the one who is tortured in the dormitory may be Guo Hua."

Song Wen looked at the picture drawn by Lu Siyu, and it was divided into three levels. On the family side, Lin Wanwan was the first level, younger brother and stepfather were the second level, and mother was the third level.

On the other side of the dormitory, Lin Wanwan is on the first floor, Dong Fang and Ma Aijing are on the second floor, and Guo Hua is on the third floor.

Song Wen understood a little bit: "You mean, there are classes among these people, and Lin Wanwan is the one who manipulates?"

Song Wen still remembered that yesterday, when everyone disagreed about whether Lin Wanwan was a suspect, Lu Siyu said that Lin Wanwan had a manipulative personality.He has read some psychology courses, and he knows more about controlling personality than others. Many people with controlling personality are not all strong, arrogant, and impulsive on the outside, but may also be innocent, innocent, or even innocent. Modesty, but their hearts are arrogant, paranoid, and even jealous.For this kind of people, a pure appearance is their disguise, and they cleverly conceal their intentions under friendly popularity, like wolves in sheep's clothing among the crowd.

Lu Siyu explained: "Lin Wanwan is her mother's proudest and most trusted daughter, and she is Guo Hua's closest friend. Such a relationship will allow her to grasp their weaknesses and better deceive them. Without knowing it in the sense that the victim falls into a passive relationship."

Even now, they couldn't ask Wang Wenyan about her complaints about her daughter.But this daughter is undoubtedly the key person who made her status in the family so high.The same is true for Guo Hua. Dong Fang's clothes cannot disappear out of thin air, and why Guo Hua's untouched notebook got wet. There are some clues in these things.

Class is the inevitable product of social development, as long as there are people, there will be classes.Everyone is in a different position, differentiated into different levels, and each has its own position.

In the dormitory and family, Lin Wanwan has vested interests and stands at the top of the pyramid.

At home, her mother responded to her every request and left her the best. Her younger brother was still weak and her stepfather was away all year round. She was the hope and pride of her family.In the dormitory, whether Guo Hua cooks for her or picks her up in the rain, these are not only the performance of a good friend, but also the performance of her being enslaved and controlled by her.And Guo Hua had the idea of ​​moving out of the dormitory several times, but gave up the idea several times, which was obviously related to Lin Wanwan.

Song Wen frowned: "Lin Wanwan is just a 20-year-old girl, how did this relationship come about?" His intuition told him that Lu Siyu's statement was correct, but he didn't believe that this little girl could be without a teacher. To this extent.

"The formation of everyone's personality is inseparable from her growth environment and growth experience. The same is true for Lin Wanwan. The formation of her personality is related to her family and what she has experienced since she was a child. In the case of Wang Wenyan's During the conversation, we can learn that Lin Wanwan grew up in a patriarchal grandparent’s house. The family education is very strict, the family hierarchy is strict, and each family member has their own responsibilities. I have Lin Wanwan and her family , found several more important pieces of information. The first one is scars, the second one is chocolate, and the third one is dolls.”

While talking, Lu Siyu drew a bracket and wrote these three key words, and then continued: "The environment she lives in is harsh and depressing. Threats and lures, both soft and hard, hit a stick, give a candy, Her scars are the punishment for doing something wrong, and her chocolates are the reward, and she was taught in such an environment, like a slave raised, and naturally integrated these into her world."

"The young Lin Wanwan was like a blank sheet of paper. The first thing she suffered was endless suffering. The beating and scolding of her biological father, and the harshness of her grandmother and grandfather hurt her young heart. Under such circumstances, the sudden Candy is the best comfort, she is like a hostage in Stockholm, gradually attracted by this little bit of tenderness hidden under domestic violence. While being abused, she is also learning."

Having said that, Lu Siyu paused slightly, and looked at Song Wen: "The sugar should be delicious, and the whip must be accurate. If things go on like this, the prey will be firmly fixed by your side."

This is the most important thing Lin Wanwan learned in that family, and it is also something that affects her life.Then Lu Siyu continued to draw a timeline: "After she escaped from that environment, she has reached the age of ten. At this time, her mother's doting and her stepfather's indifference replaced her. Lin Wanwan is a smart girl, she Apply what you learned in the previous family, and use it instinctively in her life."

Later, Lu Siyu drew a straight line between Lin Wanwan's name and Wang Wenyan: "She didn't love her mother, and even regarded her as the source of her painful childhood. In the second home, she put herself Wang Wenyan, the mother of Wang Wenyan, regarded her as an object of slavery. While approaching her and forming an emotional bond with her, she denied her, crushed her will, and mentally tortured the subject. During this torture, the other party treated her It will become more and more dependent, and eventually form coexistence."

"Later, when she came to the school, she made Guo Hua the target of manipulation. In school, Lin Wanwan kept instilling some ideas in Guo Hua: Although your family background is not good, and your personality is withdrawn and weak, but I am the only one who treats Guo Hua. Hello, I am your best friend. You must not let me down and betray me. As a good friend, it is normal for you to do something for me. Only I treat you well, and you are the only one in the world."

These are common words among young girls. Girls who have just entered college, left the family, and are not deeply involved in the world, are easily confused by such friendships.But now that these were analyzed by Lu Siyu, it made Song Wen feel cold behind his back.

Lu Siyu concluded: "This is a twisted and perverted relationship between girlfriends." He paused, "It's more like a relationship between a slave and a master."

At first, Lin Wanwan gained Guo Hua's trust, but then she kept questioning her, denying her, and isolating her, which made her lose herself more and more and depend on her only friend.At that time, Guo Hua also became obedient to her.This process sounds simple, but in fact it has gone through months or even years, and it has evolved little by little.

Under such an analysis, Lin Wanwan's portrait became much clearer, and the relationship between Lin Wanwan and Guo Hua also became clearer.She no longer looks innocent, and she is closely related to this dormitory.

"What about the doll?" Song Wen noticed that Lu Siyu mentioned three things, but only two points were mentioned during the analysis.

Lu Siyu blinked and looked at him: "She has grown up, and she has come into contact with society and people, so she doesn't need those dolls anymore."

Yes, her family members are her dolls, her classmates are her dolls, her colleagues are her dolls, and even the police investigating them are no different from those dolls in her eyes. It's her way of doing things, unconsciously selecting targets from the crowd for her use.Her weakness, her delicacy, are her weapons.

From all the signs that can be seen now, Lin Wanwan doesn't care about Guo Hua very much, or in other words, she doesn't care about anyone except herself. She keeps tying Guo Hua up, making her a string in her hands Doll, and the string is getting tighter and tighter.

She likes this kind of game between people.

Although Song Wen didn't understand the pervert's heart enough, he was a smart person after all, and he quickly figured out the plot. This girl was cunning and smart.When they first met, she lied about the source of the poison when they saw through, and then she changed her story.She once pretended to jump off a building in order to win the sympathy of others.Such a girl who looks very weak is naturally in a weak position. She is even being selected among the police. For example, she can't help but feel sympathy for her, Lao Jia who is seduced by her... thus affecting whether they treat her well or not. Judgment of the suspect.

After thinking about this, Song Wen said to Lu Siyu: "I understand that she will look for people suitable for control in the crowd, but how does this have anything to do with class? Or, how did class come about?"

When the train arrived here, it suddenly passed a cloud. Fragments of sunlight cast through the gaps in the cloud, with a touch of gold, hitting Lu Siyu's knuckle-boned fingers, making that slightly pale hand look like a cloud. Looking at a beautiful work of art, he held the pen tightly and drew a few arrows on the picture, "Everyone is in the middle of the game. She achieves the purpose of manipulating and confusing others by building relationships."

After all, it is easy to manipulate a person, but it is not so easy to manipulate a group.And you have to be more careful with the manipulation of groups.

Lu Siyu thought for a moment, wondering how he could explain it clearly to Song Wen: "Let me tell you a fable, have you heard of the wet monkey experiment?"

Song Wen was a little impressed by this word, "You mean the experiment, right? Put five monkeys in a cage, and put bananas on the top. As long as there are monkeys to pick bananas, they will be drenched in water, so as long as there are When monkeys picked bananas, they would be beaten by other monkeys. Later, when new monkeys were put in, the monkeys would still operate like this. The scientist replaced the water gun on the top, and no monkey dared to pick up bananas.”

Lu Siyu turned the pen in his hand and said: "This experiment comes from a business book, so it is not conclusive whether the experiment has been carried out. It can be seen as a story. What I want to tell is a derivative version of this story."

"It's still a cage, and there are four monkeys, monkeys ABCD. This water pipe is relatively small, and only the monkeys who go to get bananas will be drenched. The strongest monkey is monkey A. He wants to eat bananas, but he doesn't want to be caught. Wet, so he asked the weakest monkey D to take the banana. Monkey D was drenched in water, monkey A ate the banana, monkeys B and C envied monkey A for eating the banana, but they were better than the wet monkey D Much happier."

"At this time, a wonderful psychology arises. Monkey BC has a sense of inferiority when facing monkey A, but they have a sense of superiority when facing monkey D. Therefore, the four monkeys have three classes, and the classes are in the monkey class. born in the crowd."

The real situation is definitely more complicated than this story, but this way, the story is easy to understand, Song Wen sorted out his thoughts, "You mean, at home, the mother is a weak monkey D, and in the dormitory , Guo Wei is the weak monkey D. And Lin Wanwan is the monkey A?"

Lu Siyu nodded: "Even sometimes, that weak monkey D is a gift she gave to monkeys B and C. Others will follow the behavior of the oppressor and start oppressing them too. Just like his younger brother She would scold her mother, just like Dong Fang and Ma Aijing would punish Guo Wei. Lin Wanwan is constantly adjusting various relationships, intentionally or unintentionally. There are conflicts and weaknesses in the dormitory. You can make a fuss about your own contradictions."

Speaking of this, Lu Siyu licked his lips habitually. Looking at it from Song Wen's perspective, his eyelashes are distinct, but his eyes are unfathomable: "Through punishment and reward. It may be just a small game at first." It is their little bit of malice when Guo Hua is not in the dormitory, but the violence will gradually escalate. In this way, in the dormitory relationship, Lin Wanwan has become the top of the class. In the dormitory, she spends Dong Fang's Qian, with the help of Ma Aijing's relationship, got a high score in the thesis, asked Guo Hua to serve her tea, pour water and wash clothes, and she even knew her mobile phone password, so her mobile phone was so clean, and when she dialed 120, she took it Guo Hua's mobile phone, because that mobile phone is usually used by her."

Seeing that Song Wen didn't interrupt, Lu Siyu continued, his voice low and seductive, enough to confuse people's hearts: "The poison was really brought by Guo Wei, and the chocolate was also bought by her. Let's interrogate Guo Hua for the reason, either Guo Hua was already under duress, or she was poisoned with the encouragement of Lin Wanwan, or Guo Hua couldn't believe her memory at all, and didn't have the courage to identify her best friend."

Lu Siyu talked a lot today. When he fell into this kind of reasoning and logic, he was like a child who had made a difficult problem and wanted to share his achievements with others. This time, he no longer hid in the dark at all, but sharpened revealing.Song Wen looked at Lu Siyu in front of him. At this time, he was no longer as dull, soft, and harmless as before.His handsome and pale face revealed a kind of excitement, cold and ruthless, rational and wise, making him look dangerous and charming.

These things are abnormal, unthinkable but completely reasonable. Once this logic is accepted, many things in the case can make sense.Song Wen felt that he had finally straightened out the case, as if removing the refracting mirrors in the kaleidoscope, allowing the relationship behind it to appear before his eyes.

The truth that has been bothering me finally appeared before my eyes, but Song Wen was not happy at all. He rubbed his brows: "I understand your logic, but this situation is still based on assumptions. Listen to the psychological manipulation It sounds too mysterious, we can’t rely on these to convince judges or even bureaus, I guess it will be difficult to convince Lao Jia, and some theoretical basis is still needed.”

Lu Siyu said: "The core of this case is poisoning. I am analyzing the logic behind the case and the relationship between the characters with these so-called theoretical knowledge. But this kind of manipulation is completely feasible." He thought for a while and then said, "This way Cases are not common in China, but there have been a few in Japan. The more famous ones are the Kitakyushu captivity murder case."

Song Wen thought about it, "Is it the case in the 90s, where a couple imprisoned and killed seven people?" He had read some related materials, and thinking about it now still makes one's scalp tingle.

Lu Siyu corrected: "It's not that they killed, but let the victims kill each other." Then he sat up straight, "But this case is just similar, because he used electric shocks when manipulating people, It's not purely using psychological manipulation. I just use this example to illustrate that if a person is manipulated by others, even relatives can fight each other with swords."

Song Wen knew about this case in the past, but every time it sounds like it, he still finds it unbelievable.The education he received from childhood and his growth experience made him feel that such things are incredible, but these are real evils that exist in the world.

Lu Siyu thought for a while and added: "Similar cases also include the Hyogo serial murder case in which the suspect is Miyoko Kakuda. That old lady is known as a soul killer, and she mainly uses brainwashing to manipulate and kill people. She seized the violence, These three factors, sex and psychology, turned the victim's family into an arena. Over the years, at least seven people were killed in Japan because of her, and she was not arrested until 2012. Later, with her suicide, many The details and truth are unknown.”

After talking about the two cases, Lu Siyu returned to the present case: "However, these are much more serious than the cases in front of us. At least I think that Lin Wanwan has not yet developed to the point of completely manipulating others to kill people. Therefore, in the end, Guo Hua ran out of the dormitory and called for help."

Song Wen asked: "Then what do you think is Lin Wanwan's motive for killing? What is it?"

Lu Siyu stretched out two fingers, "The master wants to kill the slave for two reasons. The first is that he doesn't need the slave anymore, and the second is that the slave is out of control and wants to leave him."

Seeing that Song Wen was a little puzzled, Lu Siyu began to explain in detail: "During the previous interrogation, when I asked about medicine cats, I once replaced 'Guo Hua' with 'you', and she didn't refute me. And According to our investigation, Lin Wanwan is more likely to be the mastermind of all this. Guo Wei's purpose is to stop the cats from making noise, and she is killing cats to satisfy her own desires, and she is simulating murder. Practice. I think that in Lin Wanwan's nature, there is a cruel side to killing. In this society, there are some people who will use killing to solve problems for some reasons that ordinary people cannot understand."

Song Wen nodded when he heard this. In the past few years of criminal police work, he has encountered many perverts: "I understand what you mean, most people in society are not such people, but we can't Deny the existence of this heterogeneity."

Lu Siyu lowered his head and looked at the relationship diagram of the characters in front of him. With his fingers twitching slightly, he conjectured: "Lin Wanwan came to the school from home, and soon discovered that the dormitory is a place that fascinates her even more. Her The control is constantly escalating in the dormitory, where she can live more freely than at home. At this time, she feels that she doesn't need her family anymore, so she tries to kill her parents and younger brother, she is very tired of those People, she thinks they are useless, despises them, she wants to get rid of her original family."

Lu Siyu paused and continued: "As for killing the students in the dormitory, it was because she discovered the gap between her family and other families. This is a kind of strong jealousy. If it is normal, then it is all jealousy. , because in the dormitory where she builds relationships, she can find balance and comfort from other aspects. But once she graduates, this balance will be broken. Those people will get out of her control, which is something she cannot Tolerance." At this point, he raised his head and asked Song Wen, "Have you noticed that Lin Wanwan is not ready for graduation."

Song Wen thought for a while and lowered his head in thought: "Dong Fang's family has found a job for her. Ma Aijing is going to go abroad, even Guo Wei has bought a new mobile phone and is ready to start a new life, and Lin Wanwan, in all our searches, we have found a job for her. I don’t even have a graduation resume.” In the second semester of senior year, all the students were eager to enter the society, but Lin Wanwan didn’t want to come out.

If Lin Wanwan is really the murderer, the initial gas incident might just be her attempt. For months, every time, their yearning for life after graduation stimulated her.

Therefore, she was smart and planned everything. Only people like her can survive and be cleared of suspicion, and those who are regarded as slaves by her will never escape her control and will be left behind forever by her. here……

Lu Siyu nodded slightly, and leaned back on the chair. He held up his thermos, drank the water in it, and tried to bring himself into Lin Wanwan's mind: "As long as I think that these people will leave her Control and she'll go crazy."

The two of them suddenly fell silent at the same time. They were sitting on the train facing each other.

As a policeman, Song Wen often reflected on why he didn't see far enough to see the whole truth, but whenever they were close to solving a case, he felt a kind of fear from the bottom of his heart. It turns out that the human heart can grow like this.

He looked up, and there were people all around him, men and women, old and young, everyone had a beating heart and a working brain, they were playing with their mobile phones, they were chatting and laughing, these were the people he couldn't see through, the last complicated people.

In the end, his eyes fell on Lu Siyu. What he saw was different from what he saw, and what he felt was also different from him.He's smart, sharp, and meticulous.

On weekdays, Lu Siyu has various disguises on his body. It seems that he is the real him now, showing his sharp edge and awe-inspiring evil spirit.He could feel Lu Siyu's excitement when he talked about those crimes.He remembered the theory of the criminal psychology teacher when he was in the police academy. Only by fully understanding the criminal, resonating with him, and thinking like the criminal can he correctly analyze the criminal behavior and portray the criminal.

There was a flash of lake and mountain scenery outside the train window, reflected on Lu Siyu's face, his hand holding the pen paused suddenly, as if he also realized that in his reasoning just now, many perspectives had not been changed, human logical thinking, way of thinking, Speaking habits, like fingerprints, have their own unique ways, no matter how well the disguise is, these ways will still be revealed unconsciously.

Song Wen didn't pursue too much, but instead asked him: "The truth is that there is nothing wrong with this, but the current case has no witnesses, so the chain of evidence needs to be complete... We still need some direct evidence."

Lu Siyu thought for a moment, picked up the notebook, and wrote the word "chocolate" on it.

Delicious candy becomes deadly poison, where it all started, and where it can end.

Lu Siyu raised his head and looked at Song Wen: "I have a bold idea. If my reasoning is correct, I think there may be evidence to prove it is her." Then he paused and said, "But Team Song, I hope you can promise me one thing first."

Song Wen raised his eyebrows: "What's the matter?"