There is often only a thin line between good and evil.

After listening to Cai Fenfen's story, Xu Lang asked the details again, while Ning Yanran kept her head down, holding a pen, writing and drawing on a blank piece of paper, not knowing what she was doing.

According to Xu Lang's careful questioning, as well as Cai Fenfen's careful recollection, Xu Lang's mind came up with the physical characteristics of the suspect.

Male, between 22 and 27 years old, about 1.72 meters tall, strong body, and great strength, may be engaged in manual labor, when the suspect committed the crime, first attacked the victim from behind, causing the victim to be in a coma for a short time, and then committed the crime, after the victim was awake, when he launched a resistance, the suspect covered his mouth, beaten, etc., to force the victim to submit, and when the suspect committed the violation, he would use a condom, and would not leave direct evidence such as semen and fluids at the scene, after the fact, The victim's mobile phone wallet and other valuable items will be snatched to prevent the victim from calling the police immediately.

One of the most important features, which the victim remembers most clearly, is that the suspect looks like a popular traffic star, which provides a very direct evidence for solving the case.

Just after Xu Lang finished asking, Xu Lang found that Ning Yanran was still writing and painting with her head down, and felt a little strange, so he gently pushed Ning Yanran's arm with his hand and asked, "What are you doing?" ”

Ning Yanran was unmoved and continued to write and paint.

It didn't take long for Ning Yanran to finally put down the pen in her hand, handed a piece of paper to Cai Fenfen, and asked, "Is the suspect you saw like this?" ”

Cai Fenfen took the paper and looked at it, nodded hurriedly, and tears flowed down again.

Xu Lang leaned over to take a look, and suddenly it was a sketch portrait of a man, after seeing this painting, Xu Lang looked at Ning Yanran's eyes, and suddenly there was a change, I didn't expect Ning Yanran to be a portrait expert, although he was not a serious expert, but this portrait was very similar to the suspect described by Cai Fenfen.

After seeing this portrait, Cai Fenfen's eyes showed monstrous hatred and fear from the heart, which caused Cai Fenfen's hand to hold the portrait to tremble, and tears flowed outward one by one, and she couldn't stop it.

Seeing this, Xu Lang knew that he couldn't ask anything, so he stood up and walked out of the dormitory, Ning Yanran also stood up, left his contact information on a piece of paper, and then handed it to Cai Fenfen, and said: "If you think of anything else, you can call me on this number, my name is Ning Yanran." ”

After Cai Fenfen took the paper, she raised her head, stretched out a hand to hold Ning Yanran's hand tightly, and said with tears in her eyes: "Officer Ning, you must catch that murderer, you must be, otherwise, I will not be able to be a man in my life." ”

Ning Yanran looked at Cai Fenfen standing in front of her, and after listening to what she had just said, Ning Yanran nodded heavily and said, "We will find the suspect as soon as possible." ”

"Thank you, thank you, thank you."

Hearing Ning Yanran say this, Cai Fenfen said three thanks in a row.

Ning Yanran didn't know what to say, so she had to pat Cai Fenfen's shoulder, then picked up the portrait and the interrogation transcript and walked out of the room.

When Ning Yanran walked out, she found Xu Lang leaning against the wall of the corridor smoking a cigarette, Ning Yanran walked over and said hatefully: "I must catch this murderer with my own hands." ”

After speaking, Ning Yanran waved her fist.

Xu Lang raised his head, glanced at Ning Yanran, then looked at the portrait she was holding in her hand, and said, "You learned this?" ”

Ning Yanran was stunned for a moment, followed Xu Lang's eyes, and then reacted and said, "That's what I studied in college." ”

After speaking, Ning Yanran glanced at Xu Lang with some embarrassment and said, "It's my first time painting a portrait." ”

After Xu Lang listened, he was a little surprised, he didn't expect Ning Yanran to paint so realistically for the first time, which made Xu Lang a little admired, he also wanted to learn the skill of psychological portrait at the beginning, but Xu Lang was born with no talent for art, and the things he painted were completely graffiti, and Xu Lang had to give up in the end.

The two walked out of the women's staff dormitory side by side, Ning Yanran put away the portrait and asked, "Which one are we going to ask next?" ”

Xu Lang flicked the cigarette butt in his hand out, and the cigarette butt drew a graceful arc in the air, and then landed accurately on the trash can not far away.

"Let's ask one by one."

Hearing Xu Lang say this, Ning Yanran did not object.

Cheng Xi, is a white-collar worker of an IT company in S City, not only young and beautiful, but also has excellent business ability, after entering the company, he completed a large order, which brought a lot of profits to the company.

According to Cheng Xi's recollections, on the night of the 18th, they first went to the hotel for dinner, and then at the strong request of their colleagues, they went to KTV to sing, and played until more than twelve o'clock, and then left the scene one after another, Cheng Xi stopped a taxi and left KTV, but when the car was about to arrive at Changdong Road, it was broken in the middle of the road, Cheng Xi had no choice, so she had to get out of the car, thinking that the place where she got off was not far from where she lived, and she walked home in fifteen minutes, so after she paid the money, she walked home, Unexpectedly, on the way home, he was attacked, and then robbed of money.

When Xu Lang heard this, he interrupted Cheng Xi's narration and asked, "Do you remember the license plate number of that taxi?" ”

Cheng Xi shook her head, she drank a lot of wine that night, although she usually drank well, but she couldn't stand the coaxing and persuasion of her colleagues, when she went home, she was already floating in both legs, where do you remember the license plate number of the taxi.

Seeing Cheng Xi shaking his head, Xu Lang frowned, and asked unrelentingly, "Are you thinking about it, do you really not remember anything at all?" ”

Cheng Xi didn't speak, and thought hard for a long time before saying: "I can't remember the specifics, but I remember that the tail number is 38." ”

"Do you remember what a taxi driver looked like?" Xu Lang asked again.

Cheng Xi recalled again, thought about it, and said: "It's a middle-aged man in his forties, slightly chubby, and a little thankful. ”

Speaking of this, Cheng Xi paused, and suddenly, she said again: "By the way, he stammered a little. ”

After listening to Cheng Xi's description of the taxi, Xu Lang glanced at Ning Yanran, and Ning Yanran quickly wrote down this information.

"Can you tell us about what happened after that?" Xu Lang asked.

Cheng Xi nodded and continued to speak.

She got out of the taxi, walked for about seven or eight minutes, at that time, she could no longer see the taxi, originally at this time, she had finished walking the factory east road, but that night, she drank a lot of wine, after getting out of the car, the wind blew, she vomited on the side of the road again, this is better, just after she vomited, stood up, ready to continue walking towards the house, suddenly a figure jumped out of the shadows, attacked her from behind.

At that time, Cheng Xi had already drunk, and she had just vomited, and after being attacked from behind, Cheng Xi fell directly to the ground, and her consciousness was suddenly a little blurred, and then she was dragged to the side of the road and raped, during this period, she also resisted, but she drank too much, and she didn't have much strength in her hands at all, while constantly slapping the murderer, while grabbing the murderer's body, during which her nails cut the murderer's chest.

Hearing this, Ning Yanran's eyes lit up, interrupted Cheng Xi's narration, and asked, "Can I take a look at your nails?" ”

Cheng Xi stretched out her hand and put it in front of Ning Yanran, Cheng Xi's hands are very white, and her fingers are very slender, if she is not in the IT industry, these hands are very suitable for playing the piano.

Ning Yanran turned Cheng Xi's hand over and looked at it for a long time, and found that Cheng Xi's was not very long, and the inside of the nails was clean and there was nothing, which made Ning Yanran disappointed.

Xu Lang didn't look at Cheng Xi's fingers, because when he saw Cheng Xi, he noticed Cheng Xi's hands, and he found that Cheng Xi's hands were very clean, and it has been six days since the day of the crime, who would not wash his hands for six consecutive days? Even boys who don't like cleanliness wash their faces and hands every day after getting up, let alone a girl who is engaged in the IT industry, or a beautiful girl.

Cheng Xi continued.

After Cheng Xi caught the murderer, the murderer slapped Cheng Xi hard, and then continued to commit the crime, after the incident, the murderer snatched Cheng Xi's belongings, an LV bag, a platinum necklace, two rings, a women's watch, and mobile phone wallets and other items, and then the murderer quickly fled the scene.

After the murderer left, Cheng Xi was completely drunk, and the whole person was sober, in the dim light, she saw the murderer's face clearly, it was a man in his thirties, who looked like a certain star in a war movie TV series, the reason why she felt that person was very similar to that star was because her parents liked to watch war TV series.

After Cheng Xi woke up, she couldn't care about anything else, so she ran back home barefoot, knocked on the door of the house, it was her mother who opened the door for her, and was startled when she saw her covered in mud and her clothes in tatters, and hurriedly let her into the house.

After Cheng Xi got home, she didn't say a word, she rushed into the bathroom, took a crazy bath, she stayed in the bathroom for more than three hours, and then her parents were worried that she had problems in the bathroom, and they kept knocking on the door frantically outside, she just walked out of the bathroom, and then she threw herself into her mother's arms and cried, the next day, she went to the police station to report the case, and then asked the company for a week off, and returned home, these days, she has not gone out.

Cheng Xi didn't know what she should do next, she didn't want her colleagues to know what happened to her, she didn't know what happened to her except for a boyfriend when she was in college, and after graduation, the two broke up, she didn't talk about a boyfriend, although she was young and beautiful, and her business ability was also very strong, and there were many young colleagues around her who expressed their love for her, but they were all politely rejected by her, and now that something like this happened, she really didn't know what to do, she didn't want to go to work, she didn't want to go out, she stayed at home every day, Locked himself in the room, except for the hungry who came out to eat something, that is, went to the bathroom to take a bath, took a crazy bath, and then returned to the room, crying silently.

When Cheng Xi was talking, Cheng Xi's mother and father did not come in, but Xu Lang could clearly hear her mother's suppressed cry and his father's sigh in the living room.

"Can you elaborate on the suspect?" Xu Lang asked.

Cheng Xi sat on the bed, clasped his knees with his hands, lowered his head, heard Xu Lang's question, raised his head, glanced at Xu Lang, his eyes were a little evasive, he didn't dare to look at Xu Lang, he quickly lowered his head, and said softly: "I drank too much at that time, and I don't remember very clearly, I am in my thirties, my body is very strong, and I look very much like that TV series star." ”

"Anything else?" Xu Lang asked again.

Cheng Xi thought for a while and said, "I don't know if I was drunk at the time and had a problem with my nose, or what's the matter, I smelled metal on him." ”

"The smell of metal?"

Xu Lang and Ning Yanran looked at each other, not understanding what Cheng Xi meant by the so-called metallic taste.

Cheng Xi saw that Xu Lang didn't understand, so he said: "Some time ago, I talked about an order, and I went to the other party's factory at that time, and in the manufacturer, I smelled the smell of metal. ”

"What factory are you going to?"

"A machine processing factory is the kind of factory that has large machine tools."

Hearing Cheng Xi say this, Xu Lang understood that Cheng Xi's so-called smell of metal was the smell of volatilization of mechanical lubricating oil.

"What's the name of the owner of the factory you're working with?"

"Du Chun"

"Du Chun? Why haven't I heard of it? Ning Yanran asked puzzled.

Cheng Xi didn't want to speak, so Xu Lang explained: "Du Chun is the owner of a mechanical processing factory in S City, and the main production is mechanical parts. ”

"How do you know so well?" Ning Yanran asked curiously.

Xu Lang touched his nose and didn't speak, because some time ago, the firm received Du Chun's list, he suspected that his wife was having an affair outside, so he wanted to find Xu Lang and they investigated, Xu Lang was sleeping at home at that time, Du Ziqiao went, after some investigation, he did find that Du Chun's wife did raise a little white face outside, Du Chun knew that after he got married, he divorced his wife, and now the two are still fighting a divorce lawsuit.

"Is there anything else you'd like to add?"

Xu Lang didn't want to continue to discuss this issue, so he looked at Cheng Xi.

Cheng Xi shook his head, still clasping his hands on his knees and lowering his head.

So, Xu Lang and Ning Yanran walked out of Cheng Xi's bedroom.

When Xu Lang and the others left Cheng Xi's house, Cheng Xi's mother took Ning Yanran's hand with red eyes, and said, "Two police officers, you have to find the murderer who suffered a thousand knives, my daughter is still young, what can she do in the future?" ”

Cheng Xi's mother was in tears as she spoke, and Ning Yanran had no choice but to comfort her on the side and said, "Auntie, don't worry, we will definitely catch the murderer as soon as possible." ”

But no matter what Ning Yanran said, Cheng Xi's mother was unwilling to let go, and in the end, Cheng Xi's father pulled Cheng Xi's mother aside, and Xu Lang and the others left Cheng Xi's house.

Next, Xu Lang and Ning Yanran went to visit the victim Li Xinxin and the third-year female student Li Xin'er.

Li Xinxin is engaged in the work of accompanying the bar, when Xu Lang found her, she was sleeping in the dormitory, compared to several other victims, Li Xinxin did not show much pain, in the past few days after the crime, she still commuted to work as usual and went to work in the bar.

When Xu Lang and them asked, Li Xinxin told the events of the day in detail, and after Xu Lang and they listened, Ning Yanran was stunned, and Xu Lang touched his nose and didn't speak.

Because Li Xinxin was not concerned about her being raped, but worried about her lost financial problems, especially the necklace she put in her bag, according to her, it was given to her by a customer, worth tens of thousands, which made Ning Yanran very speechless.

Finally, when leaving Li Xinxin's house, Li Xinxin also asked when she could catch the murderer and retrieve her lost necklace.

Ning Yanran had no choice but to say, as soon as possible, and then left in a hurry with Xu Lang.

After Ning Yanran walked out of Li Xinxin's house, she said angrily: "Who are these people? I don't worry about my reputation, but I care so much about a broken necklace. ”

Xu Lang raised his head, glanced at where Li Xinxin lived, and said, "Don't you see what she is engaged in?" ”

Ning Yanran said without thinking about it: "Isn't it just a bar girl?" ”

Xu Lang rolled his eyes and said, "She is an escort lady, didn't you find out that the reason why she went to the police station to report the case was because of the necklace, and she reported a robbery, not a rape case?" ”

After Xu Lang said this, Ning Yanran remembered that on Li Xinxin's file, it was indeed a robbery case, which made Ning Yanran angry, stomped her foot fiercely, turned around and left.

Xu Lang looked at Ning Yanran, who was leaving angrily, shook his head, and didn't say anything.

When the first three victims were questioned, they all went very smoothly, but when they questioned Li Xin'er, a third-year female student, they encountered a lot of problems.

Li Xin'er is a single-parent family, she and her mother depend on each other, this kind of thing happened to her daughter, the mother and daughter have always hugged and cried at home, Li Xin'er has not gone to school since the incident, and has always stayed at home.

After Xu Lang and they came, Li Xin'er stayed in the bedroom all the time, no matter Xu Lang and they called the door, Li Xin'er just didn't open the door, and Li Xin'er's mother kept accusing Xu Lang of them, saying that they had been reporting the case for so long, why hadn't the police caught the murderer, saying that the police were not doing well, and that the police were a group of people who ate dry food, etc., anyway, the scolding was very ugly.

Xu Lang listened to the angry scolding of this single mother, and didn't say anything, until Ning Yanran, who was on the side, couldn't stand it, and wanted to open her mouth to defend a few words, but was stopped by Xu Lang, and finally waited until Li Xin'er's mother was tired of scolding, and Xu Lang began to ask about the night of the crime.

After Li Xin'er's mother told the story, and under the persuasion of Xu Lang and Ning Yanran, she finally opened Li Xin'er's door and asked for it.