Tai'an Mental Hospital.

"Is the person asleep?" Lin Fan looked in through the gap above the iron gate, and saw Aunt Chen lying sideways on the bed with an infusion stand next to the bed, and the bottle on it was half empty.

The dean followed her respectfully: "After taking the medicine, I fell asleep, miss."

"She is willing to take the medicine?"

The doctor smiled bitterly: "We mashed the medicine and mixed it in the meal and fed it to her, otherwise we wouldn't take it."

There was a worry over Lin Nian's eyebrows: "Does she still have a chance to recover?"

The dean was forty years away. Before she followed her, he was also the director of the psychiatric department of a large-scale public hospital in China. He shook his head and said: "Basically, it is very slim. It is already this age. It can only be said to delay the disease and reduce relapse.

Lin Wei is a half doctor himself. When the trustee found her in the country seven years ago, she was even more crazy than she is now. She shrank under the bridge, let alone distinguish between men and women, and she couldn't even see her human form.

In the past seven years, she has exhausted all medical methods, conventional, unconventional, physical, psychological, various cutting-edge drugs, cutting-edge technology, and Aunt Chen can only recover to a state of being awake and sometimes confused, which is still far away. There are no indications for mental patients to recover and leave the hospital, and as the age gradually increases, various complications will follow, such as high blood pressure, heart disease, anemia, gastric ulcers and so on.

When she was young, she suffered too much to find Chu Nan, and her body gradually collapsed after she was old. Only aging, which humans cannot stop at any rate.

Lin Fan looked at her gray hair and trembled: "Open the door, I'll go in and see her."

The dean hesitated: "Miss, it's too dangerous—"

After all, he is a mental patient.

"Open the door." In a tone of intent.

The dean's scalp was numb, and he had to take the key to open the door.

Lin Fan walked in, but suddenly remembered something, took a test tube from his bag and handed it to him.

"Find someone to do the test in our own laboratory. I want to see the test report within three days at the latest."

The dean took it with both hands: "Yes, miss."

The dean left her the key after he left.

The mentally ill patient didn't even have a chair in the ward. Lin Fan squatted down by the bed, looked at her gully face, and combed the white hair sticking to her side behind her ears.

Perhaps because of the medication, Chen's mother fell asleep very heavily. As she watched, she inevitably remembered the first time she went to Chen's house more than ten years ago.

The two of them held a tattered umbrella together and ran across the muddy trail.

A neighbour child with malicious intent is pointing behind him.

"Oh, isn't that the kid from the murderer's house? I am embarrassed to come back."

"The dragon gives birth to the dragon and the phoenix. The mouse's son will make holes. Don't look at studying well, maybe it's bad in Yanli. You are not allowed to play with her!"

"That's it, just walk around, don't look, go home to eat, let people hear it for a while and turn around and give you a knife, crying without crying."

Lin Fan wants to run into the rain.

Chen Chunan grabbed her sleeve: "Lin Wei, why are you going?!"

"You let them say that about you?" Young Lin Wei has a chivalrous heart that is not afraid of tigers when she is born with a calf. She and Chen Chunan are usually not familiar with each other, but she still wears other people's clothes around her waist.

She has always been grudges and grudges, and whoever treats her well she treats whoever is good.

Chen Chunan shook his head, closed the umbrella, and pushed open the old wooden door of his house.

"I am used to it."

There was no sadness, grievance or sorrow on her face, as if she was just saying that the weather was good today, and when she turned her head to call her mother, her tone was a little more lively.

She really didn't take these words to heart.

"Mom, I'm back."

Mother Chen was cooking, and the coal stove was placed next to the window, so she was lying on the floor, bending over, holding the pot and spoon strenuously, but she turned around in a daze when she heard the words.

"I'm back, this is—"

Since her father went to jail, no one has ever set foot in the little family of the mother and son.

Chen Chunan pulled her arm excitedly and pushed the person to the middle of the room: "Mom, her name is Lin Wei, and she is my classmate."

Mother Chen wiped her hands on her apron with a little restraint, and greeted her: "Sit down, sit down, classmate Lin, sit down, just happen to be cooking, stay for a bite later."

Lin Fan stood still and didn't call anyone. First, he was not used to this kind of enthusiasm. Second, he was...

Mother Chen looked a little coy about her standing, her small face was pale, and Chen Chunan's school uniform jacket was still tied around her waist, and she knew her heart.

"Is it uncomfortable? The girl will be like this the first time she has menstruation. After a while, the aunt will make you some distilled eggs and drink it and it will not hurt."

That was the first time that 12-year-old Lin Fan heard the somewhat unfamiliar name "Menstruation". A dryness appeared on her face, as if it was something heinous, and she curled her toes awkwardly and nervously.

She almost ran away by grabbing the door.

And Chen Chunan seemed to be very experienced, pulling her to walk behind the bed surrounded by curtains.

"Mom, I'll take her to change clothes first."

While cooking, Mother Chen replied: "The new pair of pants I bought for you last time, show them to your classmates. I think you are about the same height and should be able to wear them."

Chen Chunan's school uniforms are washed and washed, worn and worn, not only the sleeves and trousers are short, but they are also patched. Lin Wei is a pretty girl. Although her new clothes are always dirty and dirty by her fights, the sandals on her feet are the latest models on TV. The salary of Chu Nan’s mother is estimated to be all a year. can not afford.

Chen Chunan pulled out the pair of trousers from the bottom of the closet, saying that the closet was just a few plastic boxes together.

The trousers packaging bag had not been opened yet, she touched it carelessly, and gently opened the plastic bag, and the smell of inferior jeans came out.

Chen Chunan was a little bit disheartened, but carefully handed the pants into her hand: "Here, you wear this one."

When she came out from behind the curtain, blushing, meals were already on the table where several chairs were put together. The family had four walls, except for the bed, there was no decent place to sit on, and the mottled and peeling walls were covered with newspapers. , And the other side is covered with Chen Chunan's certificate of merit.

Chen Chunan sat cross-legged on the damp and cold ground, and Lin Nian walked over slowly.

"I will give you a new one tomorrow."

"No need, just wash it." Mother Chen put the lees on the table and pulled a cushion for her to sit on.

"Sit down, sit down, the house is broken, don't dislike it."

The food on the table is also very simple, white porridge with floating vegetable leaves, few grains of rice in clear soup and watery, dark pickles, steamed buns, I don’t know how long it has been left, mildew on the white skin, the only thing that looks still The one with a little appetite is steamed sweet potatoes.

Chen Chunan looked at her bowl of distilled eggs and swallowed, "I only drink it when I have menstruation every month."

Lin Wei knew that this was extremely precious food for the Chen family and Chen Chunan.

The young Lin Tien didn't sit down, put the changed clothes into his schoolbag, turned around and left: "I'm going home."

"Eh -" Chu Nan put down his chopsticks and chased after him, and stuffed a thin piece of white thing into her hand.

"Isn't your home very far? Remember to change on the way, don't eat cold in the last few days, my mother said, she knows everything."

Lin Nian squeezed the sanitary napkin like a hot potato. She wanted to throw it away and held it tightly in her hand. Pushing her away, she ran into the rain without looking back.

That piece of sanitary napkin is the worst quality thing Lin Fan has used in the first half of her life. It is soft and not absorbent, and it is not pure cotton. It is even a bit stuffy and not very comfortable. But she always remembers the pants and how she took care of it. The warmth of the towel tucked into her hand.

This record is nineteen years.

Mother Chen has also changed from a kind aunt who "understands" everything to her present look like a muddle-headed, unhuman or ghost.

It's really good luck.

Lin Yan pulled the corners of his lips and smiled. He raised his head and forced his tears back. He saw that the bottle above was empty. He picked up another bottle from the tray on the bedside and looked at it carefully under the faint moonlight. Hung it up for her again.

Turning around, she pressed the plastic strips turned up on her back one by one, put her arms into the bed, tucked the corners of the bed, and then left quietly.

When she returned to the door of the villa, someone was already waiting for her.

The last time Song Yuhang was waiting for her like this, it was a rainy night.

Now it is the feathers of snow all over the mountains and plains.

She didn't get in even though she had fingerprints. She squatted and smoked next to the wild sunflower nursery. The street lamp cast a dim yellow light on her, and a pile of cigarette butts fell on her feet.

Snow was piled up on her black hair, and she didn't know how long she waited, she almost became a snowman from a distance.

Song Yuhang had seen the car lights early, threw a cigarette to greet him, opened the door for her, and took the umbrella from the driver to support her.

As soon as she spoke, the snow on the corners of her eyebrows and eyes melted, and she looked like crying, and her nose was flushed with cold.

"came back."

Did not ask her where to go.

The driver took the things they bought at the mall together from the trunk, and couldn't put it down, and put some on the back seat.

Lin Fan leaned over to take it, Song Yuhang helped him up and put the umbrella into her hand.

"You take it, I'll come, I'll come."

She and the driver carried things into the hall one after another, and then turned back to lock the car and wanted to follow up again, and found that the glass door of the hall was locked from the inside.

She can still enter the fingerprint lock on the outside, and the door on the inside is locked from the inside out, and it is bulletproof glass, so she really can't get in.

Song Yuhang patted the door, and the exhaled heat turned into a white mist on the glass: "Lin Wei, you let me in, listen to my explanation, okay..."

Lin Fan came out from the cloakroom to change clothes, wrapped in a loose nightgown, stepped barefoot on the ground, holding a fashion magazine in his hand, poured a glass of red wine from the wine cabinet, and walked to the window with the wine glass. I closed the curtains.

Out of sight out of mind.

Song Yuhang let out a sigh of relief, leaned on the glass door and took out a cigarette from his pocket and lit it.

When Lin Fei finished drinking and was ready to take a bath, she glanced through the gap in the curtains. The man squatted in the courtyard and grabbed the snow on the ground, and wrote her name on a tree branch.

Lin tired the corners of his mouth, and blamed the non-mainstream ones, rolled his eyes and went into the bathroom.

When she went upstairs after taking a bath, putting on a mask and pouring a glass of red wine, Song Yuhang moved her body in the yard, running with high legs and pushing ups with one hand.

Yes, the energy is so strong, it seems that it won't die overnight.

Lin Fei took the goblet and walked upstairs, went straight to the attic and locked himself in the darkroom.

This is her secret base in Qingshan Villa. The doors are usually locked without any technological means. A super C-class lock is the best way to guard against theft.

The dark room was full of large and small photos, most of which were related to Chen Chunan. Lin Fan turned on the lamp and walked to the clue wall with red wine.

There are also traces from the last time she drew with a paint pen.

A yellowed photo pinned with a pushpin in the center is Chu Nan.

The rest are scattered clues, which do not constitute a mind map, but after so many years, it can be regarded as a small gain.

She looked at Li Bin's black-and-white photo, and went forward to tear it off.

The clue is broken.

So who else might have come into contact with Chu Nan's body at that time?

Reporter?

Eyewitness?

The criminal police responsible for investigating the case?

Assistant forensic physician?

Forensic internship?

Trace inspector?

After all, it is a big case and there are too many people who have handled it.

Lin Nian gradually squeezed the thin neck of the goblet, and his big finger became white.

I hate myself for being incapable at the time, ignorant and inexperienced, and now as long as it is a piece of broken bone, it will be able to detect it for a long time.

Song Yuhang really waited outside for a long time. She fell asleep leaning on the glass door, and was awakened again. After a sneeze, her nose was frozen into ice.

She rubbed her hands, stood up, and looked at the whole villa. When her eyes fell on the chimney on the roof, she had an idea.

Damn, it's really hard to chase a girlfriend, and I can use the secrets of special warfare to sneak into my old line.

Song Yuhang fingered the chimney, looked at the dim light below, closed his eyes, and jumped down.

The moment he noticed movement behind him, the wine glass fell to the ground, and Lin Fan grabbed the knife and jumped on it.

The paper cutter, as thin as a cicada's wing, was as fast as lightning in her hand, and it was in front of her in an instant.

Song Yuhang was dizzy from the fall, only saw a cold light rushing towards her neck, and subconsciously raised his hand to remove the blade and grab the knife. Lin Wei didn't give it. He saw who she was, but he shot more fiercely and bent his knees. It hit her abdomen and threw the person sideways.

Song Yuhang touched her head and held her wrist: "Lin Wei, it's me..."

"It's you, shouldn't you fight in a private house?"

Lin Nian was a little panting, and the two of them were in a deadlock.

"But... I miss you." Song Yuhang said, turning her hand holding the knife to one side.

Lin Fan slowly moved back under her pressure again, with the tip of the knife piercing her eyes.

"I said, don't need your comfort, come to die?"

She almost sat on her in a triangle twisted posture, and the two wrestled with each other. Song Yuhang was in a position where it was not easy to exert force and didn't want to hurt her.

I watched the tip of the knife fall on my eyelid.

She let go: "Come on."

Having said that, Wei Wei closed his eyes and let someone slaughter him.

Lin Nian's hand holding the handle of the knife began to tremble. She gritted her teeth and looked at the face in front of her, her eyes blushing slightly.

A strong wind hit, Song Yuhang swallowed a little nervously, but there was no pain as expected.

Song Yuhang opened his eyes, Lin Fan cut a strand of hair from her temple, threw the knife and stood up: "Song Yuhang, this is what you owe me."

Song Yuhang felt sour, got up and chased her, trying to pull her sleeves and hold people in his arms and slowly love her.

"I know, I spend my life slowly paying it back."

Lin Nian slapped the person away, although she spared her, but the anger was not so easy to get rid of.

"Fuck me with your earthy love words."

Song Yuhang was pushed onto the table, and looked at the wall in front of him and gave a sudden shock: "This is..."

Sorting out the clues about the "Fenyang Wharf Broken Body Case".

It took her 14 years to piece together this wall little by little.

Song Yuhang looked at Lin Wei. The man touched the cigarette from the table, lit it, and took a sip. He put his hand on the table and looked at the map, his brows furrowed.

She suddenly understood why she was so irritable just now.

Song Yuhang sighed quietly in the bottom of his heart, and walked to her side, still not daring to stand too close, looking at the yellowed map after a slap in the distance.

Jiangcheng fourteen years ago.

The black pen circled Jiangcheng No. 1 Middle School.

The red stroke is the route known for Chen Chunan's departure.

It stopped abruptly without going too far.

When it appeared in public view again, it was already three days later, and it turned into a pile of minced meat, which was picked up from the trash can.

The place where the corpse was thrown was greatly circled by Lin Fei with a red pen, and it was painted in a mess.

Song Yuhang walked around this table and walked to the wall to examine these photos. When he walked back to her again, he snatched the cigarette from her mouth and took it by himself.

Lin Fan slapped her hand when she raised her hand, and she hurried away.

Song Yuhang smiled with a hint of dogleg: "It's not good if you smoke too much, I will help you solve it, not waste."

Lin Fan looked at her with a playful smile on her lips: "Do you know that the cleaner who hit and crashed into this place the last time is dead? I can do it like the dismemberment effect in that picture. It can even be done more cleanly, with no bones left."

When she said this, her hair was loose, her eyebrows were shrouded in the dim light, and the lips of the wine she had just drunk were still bright red. Maybe the voltage in the attic was not stable. The lamp flashed, reflecting the shadow behind her. Shaped like a ghost.

For a moment, Song Yuhang had a cold vest and got goose bumps, but after a while, she shook her head firmly: "You can't kill, you can't."

Otherwise, Lin Nian hates her so much, loves and hates her, the knife would have been pierced in the neck long ago, not to mention just a cleaner without hatred.

Hearing what she said, Lin Nian glanced at her, tightened the corners of his lips, and withdrew his gaze again.

Song Yuhang walked to her and put the lamp on the map.

"I have studied this case quite well, do you want to hear my opinion?"

***

"This is..." The man sitting opposite had a look of shock.

"Yes, it's almost exactly the same as what the Jiangcheng City Bureau sent last time."

The test tube Lin Yan handed over to his cronies not long ago lay quietly on the table.

"It's just that the dose in the blood is much smaller this time, and Lin Fan has also learned to be smart, knowing that someone can do it by himself."

The man sitting across from him smiled with his head buried in his head, looking indefinable, tapping his knees with his fingertips: "Has this thing come out again?"

"It's not a good sign to show up in Jiangcheng one after another." The man who was talking to him sighed and got up and walked to the window.

"For this thing, too many people have sacrificed their lives."

"But isn't the formula ruined?" The sitting man looked at the test tube and said lightly.

"But what if the owner of the recipe is still alive?" The man standing by the window turned his head, his voice somewhat hoarse and heavy.

"No—impossible!" The man suddenly increased his tone, gritted his teeth: "He, he is dead! It is impossible to be alive! Unless...unless..."

He gasped heavily: "Is he a demon crawling back from **** to the world seeking revenge?"

The man looked at the neon flashing outside the window, the traffic was busy, and he was a little surprised. They are not young anymore, and their tall backs slightly buckled up.

However, when he said that sentence, it still reminded the other person of those long years.

"Regardless of whether he is a man or a ghost, how many times he has come back, how he died 20 years ago, as long as he dares to come, he will still be driven back to hell. There is no room for such bugs in the world."

***

Because there is no whiteboard, Song Yuhang used a pen to draw and write on paper: "The psychology of perverted homicide is also called'kinky homicide'. More than 95% of the offenders are men, and only a very small part are physically strong. Strong women."

Lin Fan nodded and leaned on the table to beckon her to continue.

She knows why this is. Dissecting a corpse is an individual effort, either with skill or strength, and neither is indispensable.

Otherwise, do you think that killing someone is killing a chicken? It doesn't take a bit of effort to kill a chicken, even a chicken can't catch it.

"Secondly, the objects that criminals choose to attack are often random. It is possible that you were spotted when you wore a beautiful dress today, or that you were spotted after you carried a good-looking bag, or that the criminals liked fat. , And you escaped a catastrophe if you were too thin. I won’t repeat this. As long as you meet the standards of a criminal, he will kill you."

"The third is that like this indiscriminate attack, the offender generally does not choose people who have a social relationship with him, because only unfamiliar people will have only biological attributes in the criminals’ eyes, but no social attributes. In other words It means that you are just his prey, just a piece of meat on his chopping board. It is cool and exciting when he kills. He enjoys the feeling of controlling everything in the palm of his hand."

"Fourth is that human beings are a complex energy system. The x instinct that exists in the subconscious mind is the basic driving force of human psychology, also known as the'libido'. Therefore, the development of psychology is also the development of libido, so, The reason why a perverted murderer is perverted is mainly reflected in the perversion of sex. He cannot get pleasure from normal communication. He can only satisfy his desires through murder."

"Just like when we were involved in the case of Gongshen women, most of the criminals actually couldn't get up at all. It is the same reason that he obtains psychological satisfaction by controlling, insulting and molesting women.

Having said this, she raised her eyes and looked at Lin Wei: "However, after the first crime committed by ordinary serial killers, they will definitely commit crimes again. I think you should also understand this."

Lin Fan nodded and took a deep breath to restrain his emotions: "So over the years I have been dissecting and looking for similar cases, just want to..."

Finding a common ground also found a breakthrough.

But since her sophomore year internship with the teacher, so far, more than 6,000 corpses have been dissected. She spent more time in the autopsy room than eating and sleeping, but she still found nothing and didn’t encounter one. Similar cases.

Bai Ling was an exception, but the clue was broken again.

Song Yuhang thought of her glass jar full of cupboards full of paper cranes, and his heart ached. He walked over and grabbed her shoulders, pressed her head against her, and gave her silent comfort.

Lin Fan stabbed her elbow for a while and didn't push it away. Song Yuhang grabbed her and didn't move, so he went on and said, "So we put aside the speculation that the murderer is a serial perverted murderer and return to the general criminal case. When the investigation comes up, delete the complex and make it simple."

She embraced her shoulder with one hand, and scratched the paper with one hand, it looked like she really had some experience in this case.

Lin Tien couldn't help but glanced at her a few more times, and when he noticed that she was looking at herself, the corners of Song Yuhang's lips curled up with a smile.

"Ordinary homicides, Zuo is just one or more of the killings of wealth, revenge, and love. Lin Wei, please sort out Chu Nan's interpersonal relationship for me."

Lin Wei shook his head: "Her interpersonal relationship is very simple. Me, her best friend, Aunt Chen, her mother, and the people in the school respect her. There is no interpersonal relationship."

"Think about it again." Song Yuhang pondered: "It doesn't have to be to befriend her, it's okay to have a bad relationship."

Lin Nian thought for a while, took a pen and paper, and wrote down a few names: "These are some people who used to bully us. Later, I checked it myself. Your police should have checked it too, but still nothing was found."

An inspiration flashed in Song Yuhang's mind: "I remember that the suspect was a butcher. Chen Chunan's father had a conflict with this man in the vegetable market because of two cents. He accidentally cut his wife and wounded him. He was later killed. He died. He had the motive of committing the crime, he lived near the scene where the body was thrown, he had the conditions and tools for the crime, and the blood stains of Chen Chunan were found in his car, which is very consistent with my profile of the murderer’s appearance and personality. , It’s just that I later heard that I died in the detention center. Otherwise, I would be able to dig up more things. Even if he didn’t kill him, he would definitely not be able to escape with that person."

This case was even more difficult for her. This is where the suspect was clearly locked, but it was so unclear that he died, and whoever left it could swallow this breath!

Lin Fei put his hands on the table, trembling slightly, swallowing saliva, trying to adjust his breathing.

Song Yuhang put his hand gently on her back and patted, "Do you have a computer?"

Lin Nian came back to his senses, and a little water came out of his eyes, and the beauty was shocking.

"Yes, I will find it for you."

She pulled out the notebook from under a pile of newspapers and books, opened it and handed it to her.

Song Yuhang took out his intranet number card, Lin Tien watched her busy, and turned his eyes away: "You...why do you have to be so conscientious?"

Song Yuhang didn't look back: "Do you want to listen to the truth or lies?"

Without waiting for her answer, she said to herself: "The lie is that I, as a people's policeman, must solve a case. I guess you are tired of listening."

"The truth, it's—" She took the time to look back at her, her smile softly, her eyes hot and sincere.

"Didn't you say, promise me when everything is over and marry me?"

"I want to marry you soon."

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