Criminal Investigation Notes

At half past nine in the evening, the grand ceremony on the banks of the Lunjiang River in the center of Nancheng city with many high-rise buildings just ended.

In the dark night, the evening breeze is blowing, pedestrians on the road are still reminiscing about the unforgettable moment just now, the air is filled with a smell of fireworks.

On the fifth floor of the Lotus Moon Tower, Song Wen and Lu Siyu standing in the corridor were separated by half a meter. Song Wen was taken aback when he heard Lu Siyu's words: "How do you confirm?"

"We only have a few confessions in our hands. All judgment criteria are only the description of the person involved, and there is no more visual information." Lu Siyu continued, in the empty and quiet corridor, his deserted voice caused a slight echo: "I think , We are now a little overly dependent on the suspect’s confession. Some of the current confessions do not seem to match. I suddenly thought of a way to identify who was on that platform tonight. ..."

The key question of the case is who has ever been on that platform.This is like the black box of this case. To understand what the truth is, the code must be cracked.

Lu Siyu pointed to the ground in front of him. The floor of Lianhua Mingyue Building was non-slip and transparent imitation white marble floor tiles. Then he pointed his finger at the light on the side, and pointed at the camera in the corner, in the white environment. Under the shining effect, his handsome face looked more plain white, the color of his lips was light, and his long eyelashes cast a shadow.

Song Wen's eyes moved in the direction of his fingers, but he didn't react to his meaning for a while.

Seeing Song Wen puzzled, Lu Siyu licked his lower lip and explained further: "The shooting range of the camera cannot monitor who walks on the platform, but according to the principle of physical imaging, the lights in the corridor and the white marble ground can reflect Some reflections."

Song Wen looked down at the ground in front of him. They had ignored environmental factors before. The white and smooth white marble floor tiles were like a huge mirror, from which a hazy reflection was reflected.

Song Wenxue once painted and understood: "That is to say, we can judge who has passed the corridor and headed towards the rooftop by the shadow on the ground and the reflection on the wall."

Lu Siyu nodded his head: "But this is just my inference. I hope the clarity of the video is high enough to be recognizable."

If it can be seen clearly that it was originally only an auxiliary monitoring, it can become the decisive evidence of who has gone to the rooftop, which can make up for the lack of evidence of insufficient video data in this case.

"Smart!" Song Wen got excited all of a sudden, wishing to hold Lu Siyu around in a circle.He looked at Zhang Ziqi, who was standing in the corridor and watching the suspects in several rooms honestly, restrained, snapped his fingers and said, "Go, let's go to the store manager to watch the monitoring!"

Since Song Wen had asked the store manager to monitor the video before, the store manager had already called out several monitoring points in the store.At this time, I heard that they wanted to see the surveillance for verification, so they gave them the entire surveillance room.

Song Wen compared the time: "It can be inferred based on the previous alarm records. In other words, we only need to check in detail the surveillance on the corner of the fifth floor from 6:30 to 6:50."

Lu Siyu sat on the swivel chair and manipulated it. He quickly confirmed the video from the camera and started playing it.

Song Wen stroked the back of the swivel chair with one hand, while supporting the table with the other hand, he stood beside Lu Siyu.

Lu Siyu raised his head and glanced at Song Wen. From this angle, he can see Song Wen's side face. At this moment, he has a serious expression and his eyes are fixed on the monitor in front of him. The white fluorescent light reflected from the monitor is illuminated. He looked tough and handsome on his cheeks.For a while, his heart beat faster.

The surveillance began to play, and the recorded electronic data formed an image, constantly changing.

Lu Siyu watched carefully. The video there was like what the store manager said. It was about the financial department and the logistics department behind. Some waiters were seen walking around, taking things and invoices from it.

"It can be faster," Song Wen said.

Lu Siyu pressed twice the speed, then after thinking about it, he pressed the four times speed.

Finally, a shadow edge appeared in the corner of the video.

Lu Siyu paused for a while, and Song Wen lowered himself and observed carefully: "Looking at the shadow, it should be short hair and taller. This may be when Zhao Yuliang said he was going out."

The video was played for another minute, and a group of shadows appeared again. The shadows appeared very quickly, but passed away in a flash.

Lu Siyu paused and intercepted a few pictures. Song Wen squinted his eyes to look carefully: "I can't see clearly, this shape..."

Lu Siyu thought for a while and said, "Could it be two people, such as Zhang Dongmei and Tan Shan walking over together?"

Song Wen frowned and said, "Look at the back first." This image is too vague to judge at all. I hope the back is clear enough.

The monitoring continues to be put back.

"Here!" Song Wen saw sharply this time and rushed to press the pause button.He suddenly leaned down and was very close to Lu Siyu. Lu Siyu could almost hear Song Wen's breathing, which made him lick his lips a little nervously. Song Wen didn't care. He lowered his head and pressed his fingers on the keyboard. After a few clicks, the picture was enlarged.

Lu Siyu followed Song Wen's gaze.A little blue light appeared in the corner of the screen, if it weren't for Song Wen's sharp eyes, it would be impossible to see it.

Song Wendao: "This is probably what Tan Shan said, when she went down from the rooftop."

Today, Tan Shan is wearing blue clothes, and it is aqua blue. It is very easy to miss if you don't observe carefully. Fortunately, Song Wen's observation ability is excellent.

Then... is the time to test whether Tan Shan lied.

The video playback button was pressed again with a click, and both of them stared at the monitoring screen with breathlessness.

Time passed by, and at the moment they were about to conclude that Tan Shan was the murderer, a red light suddenly appeared on the white ground on the screen.

The reflection of red on white is undoubtedly much more obvious than blue and other colors, although it is only a corner.

The red light stayed at the monitoring station for a while, and then seemed to hesitate to head towards the roof.

Song Wen and Lu Siyu continued to watch and adjusted the monitoring speed to normal. After half a minute, the red color flashed by again, the speed was extremely fast, as if running.

After the red, there was another shadow passing by. This was probably the time when Zhao Yuliang walked off the rooftop. According to the current monitoring time, Zhang Dongmei should be dead and lying downstairs in Mingyue!

Among the few people, only Ji Meiyun has been wearing a red windbreaker!

She was the last person to be on the rooftop. Ji Meiyun just said that she was panicked, and according to the response of the store’s waiter just now, Ji Meiyun was the fastest to go downstairs to the scene. Tan Shan followed her, so it is very likely that it is really like Tan. Shan said that Zhang Dongmei was still alive when she walked off the platform.

The suspicion between Zhao Yuliang and Ji Meiyun suddenly increased, and Ji Meiyun had been saying just now that she had never been on the platform, and her lies made her look more suspicious.

But why did Ji Meiyun kill his teacher?

She is a bride who is about to get married. At this time, she should not do such a murderous thing because of reason.

But the monitoring will not be fake...

Lu Siyu continued to lower his head and bit his nails, paying attention, and his long eyelashes drooped: "Ji Meiyun just lied. She kept saying that she had never been on the rooftop..."

In any case, they discovered Ji Meiyun's lie. She must have said this to cover up something, and that could be a breakthrough for them.

"But according to Zhao Yuliang's testimony..." Song Wen said half a sentence himself, and suddenly reacted, "No, Tan Shan said before that when they first played a big adventure, Zhao Yuliang said she liked Ji Meiyun, so his testimony was not credible. ."

The movement of Zhang Dongmei's fall will not be small. Zhao Yuliang is on the rooftop, undoubtedly seeing or hearing something, he may be lying, or even an accomplice.

Song Wen straightened up, lowered his head and muttered silently, "But what was Ji Meiyun's motive for killing...Is it angry because of blackmail, or is it revenge for her past?"

Lu Siyu thought for a moment, then licked his lower lip and said, "Do you think that Ji Meiyun's narrative just now has some problems."

"What's the problem?" Song Wen asked.

Lu Siyu frowned and his eyelashes trembled, thinking about how to describe this feeling: "It's...that's...she seems to hate Zhang Dongmei too, but what she said is not so, like other people's. As strong as... when she talked about Zhang Dongmei, there was a feeling I couldn't tell."

Song Wenwen couldn't figure out the problem. At this time, when he heard him say it, he also found something wrong. The story that Ji Meiyun told before was originally very sad, but her first half of the description was a little understatement.

When something like that happened, the child was forced to be knocked out. For a woman, it was a serious injury, and there should be an unforgettable memory...

But Ji Meiyun's description is like a bystander.

Lu Siyu condensed his eyebrows for a moment and suddenly said, "I want to understand! Maybe, the girl in front of us is not the same girl!"

Song Wen also thought of a possibility. He frowned and said: "You mean, it is not Ji Meiyun who is here to attend the party tonight, but her sister?!"

Today, at this special time, in a special place, with destroyed physical evidence, and impossible forensic autopsy, they can only conduct a less formal pre-examination here, and many steps have been simplified.

This kind of interrogation process relies more on the confessions of these people. Those confessions and testimonies can give them more information, outline the relationship among the characters, but also mislead them.

The teacher-student relationship that was confessed from the beginning was the basis of this case, and they naturally entered the misunderstanding that these people were classmates!

But memories may be wrong, people may lie, and the real reality may not match what they see.

If Ji Meiyun is not a student in this class, but a real murderer, she is obviously also taking advantage of this to hide her identity.

Lu Siyu thought for a while and shook his head: "The ID card will not be forged. Zhang Ziqi used to record against the ID card. It is very likely that Ji Meiyun is the name of my sister."

Song Wen asked: "Then why didn't other students point out this?"

Lu Siyu whispered: "Because she and her younger sister are close to each other and they look alike. They have not seen each other for many years. During the whole process, they called her beautiful..." That simple nickname, long ago Replaced the sister's name.

Song Wen opened the previous record sheet for verification. There were simple information about each person, including name, age, gender, mobile phone number, ID number, and address.Those were all filled out separately by Zhang Ziqi after the incident. When they arrived, the work had been completed. Ji Meiyun’s information was written in the last one, so no one found the anomaly, or someone found it. Did not expose her.

From the time they took over the case, they subjectively locked the suspects in the case among the parties, and hurriedly checked the basic information of these people, and found that they did not have any criminal records, they did not dig further.

"What should her sister be called..." Song Wen hurriedly dialed Zhu Xiao's phone, "Zhu Xiao, you can adjust the name of all the students in the class of Nancheng Junior High School that graduated ten years ago. ."

"Okay!" Zhu Xiao was waiting at the computer anytime tonight. At this time, he got the order and quickly started typing on the keyboard. The student list is not confidential information. After the student status is electronic, it will be easy to find.

After just two minutes, a list was posted on Song Wen's cell phone.

Song Wen took the mobile phone in front of Lu Siyu, and the two of them checked it together, and checked the names one by one.

Tan Shan, Zhao Yuliang, Qian Jiang, Meng Tiantian...These are the people they have contacted and interrogated tonight.Originally they and these people were strangers, but after tonight, they are very familiar with those names.

"Ji Meiyu..." Song Wen pointed to a name on the list. "My sister's name is Ji Meiyu."

He thought for a while and sent a voice message on WeChat: "Zhu Xiao, you can check the ID photos of Ji Meiyu and Ji Meiyun. I need the ID photos of junior high school and adult."

Soon, a few photos were sent, and the two sisters are indeed very similar.Song Wen zoomed in on the photos of the two of them, looked at them carefully, and concluded, “It’s not wrong that Ji Meiyun is here today. There is a mole under Ji Meiyu’s right eye, and the forehead is a bit wider than her sister’s. The chin is wider than her sister’s. It's a little shorter, but these features may not be distinguishable in the eyes of students who haven't seen them for many years."

Time will fade everything, memories will be blurred, appearance will gradually change.

At the reunion of classmates in college or high school, everyone may still have an impression of each other, but elementary school, junior high school...as time goes by, many names have long been unclear.

This is a very scary question. When classmates meet, can you be sure that the person sitting next to you and smiling at you is a classmate in your class?

What's more, Ji Meiyun and Ji Meiyu were originally sisters in the same school. They looked like two bright flowers growing side by side, and they looked alike, and they would confide in each other's hearts in the middle of the night.

This may also be what Lu Siyu thinks is something wrong with Ji Meiyun, because she was talking about her sister's experience just now.

In her mind, she must first transform her identity and then describe it.

She heard many things, not her own personal experience, and could not describe it very empathically.

Zhang Dongmei is not her teacher. She and Zhang Dongmei didn't have much direct contact in the past. Her reaction was not like a student who killed her teacher with her own hands. That's why she was able to pass through the layers of inquiry.

As for the name, Ji Meiyun probably used her sister's internet contact information to talk to other people. After everyone met, they were all called Ji Meiyu's nickname-Beauty.So some people don’t even know that she is not actually a classmate.

"Do you think Zhao Yuliang knows it?" Lu Siyu asked, biting his finger.

"I think Zhao Yuliang may know it, he should have discovered Ji Meiyun's fault long ago." Song Wendao.

"Then what is your basis for judgment?" Lu Siyu raised his head and asked him.

"Have you ever liked someone? If you dream about the person you like, his facial features, appearance, and expression will all seem to be carved into your head with a knife. After graduation, you will also try to understand the other person. Situation, look for the other party’s photo." Song Wen lowered his head and looked at Lu Siyu. His eyes were hot. "If he really liked Ji Meiyu when he was in junior high school, he should be able to recognize that the person in front of him may not be his own. Classmate. After all, Ji Meiyun doesn't have the mole at the corner of her eyes."

"So when you were in junior high school, Team Song, did you have someone you liked?" Lu Siyu continued to ask.

"Not when I was in junior high school." Song Wen replied decisively, "but now."

Lu Siyu regretted asking that question. His ears were red again, and he lowered his head to return the question to the case. He whispered: "Ji Meiyun is here to attend the class reunion instead of Ji Meiyu, so what is Ji Meiyu doing now? "

Song Wen was also thinking of this, and the two said in unison: "This may be her motive for murder!"

Song Wen quickly said: "Zhu Xiao, please check Ji Meiyu's big data file and try to contact her." He thought for a while and said, "Also transfer a copy of others and send it to me quickly."

When the case was found, Tan Shan's suspicion was reduced, and Ji Meiyun was more likely to be the murderer.

After Song Wen had collected all the information, he did not forget to call Cheng Mo, and the three people called Ji Meiyun to the interrogation room again.

Ji Meiyun seemed to be a little surprised why she was called again, and she was not quite sure about the progress of the interrogation. She looked at the three people in front of her with a little confusion, with a panic expression, then she bowed her head and fiddled with herself. When he raised his head again, the panic was replaced indifferently.

Cheng Mo did not analyze the case with Song Wen and the others just now. At this time, it was still a bit unclear. So, I don’t know why Song Wen suddenly changed the subject of suspicion, but he has learned to be smart. Looking at Ji Meiyun, he stopped talking, just waiting for Song Wen to ask. words.

Song Wen asked: "Ji Meiyun, you lied during the interrogation just now? You are not a student in Zhang Dongmei's class at all, your sister Ji Meiyu is."

Ji Meiyun knew that her secret was finally discovered. She simply put one slender leg on the other, folded her arms and said, "Yes, I am here to participate in today's class meeting on behalf of my sister. In front of me, I have always used my sister's identity. I found this matter difficult to explain, so I lied. However, I don't think these have anything to do with tonight's case, so I didn't confess before."

Now facing the three police officers, she finally told the truth, but in her words, there was no regret and the panic of the lies being punctured.

"Do you want to continue to argue?" Song Wen continued: "We just checked the surveillance video on the rooftop and found that you were the last person to climb the rooftop. When you were on the rooftop, it was Zhang Dongmei who fell to her death. Time, you are the murderer who killed her."

"I just walked to the door of the rooftop. Just as I was about to go to the rooftop, the murder happened." Ji Meiyun's expression remained unchanged, and he turned the question back.She seemed to be sure. There was no camera on the rooftop, probably because she had been on the rooftop, or she felt that if there was such a certain evidence, the police would have suspected her a long time ago.

In fact, the image was only part of Tan Shan's suspicion, increasing the possibility that Ji Meiyun was the murderer, and it was a little closer to locking her as the murderer.

Lu Siyu thought about it. It might be because Song Wen used Zhao Yuliang’s testimony to defraud her once before. Such a trick is not very easy to use the second time. Ji Meiyun should have thought about it clearly by now. The police may not have found the direct evidence.

"Your explanation now is still illogical." Song Wen looked at the woman and continued to ask, "What about your sister? Why did you come to the reunion instead of her?"

Ji Meiyun lowered her head and said nothing.

At this point, Song Wen suddenly received the message. He checked it and looked at her with a serious expression, "Ji Meiyun, we just checked. Your sister died three days ago."

Due to the short period of death, many registration procedures have not been completed, and the ID card and household registration have not been cancelled. This is the latest information they found when they tried to contact Ji Meiyu.

This time is too coincidental. A married bride suddenly died of illness. Does this have anything to do with Zhang Dongmei?The most important thing is, why did Ji Meiyun conceal this?

This elder sister does not see the sadness of her sister’s death. She does not manage her sister’s funeral at home, but instead of her sister, she attended a class reunion...

All this in itself is a huge doubt.

Something shining suddenly appeared in Ji Meiyun’s big eyes. She hesitated for a while, lowered her head, and her long hair fell on both sides of her beautiful cheeks. She opened the mouth and said: "Police officer, I only admit that I am today Instead of the dead sister, there was a class meeting that shouldn't have been there."

Song Wen thought she was about to cry, but when she raised her head, he realized that Ji Meiyun’s eyes were dry and tearless, but the corners of her mouth provoked a sneer, "I just said panic, but I didn’t do anything else. The matter. As for my sister’s death, it has nothing to do with tonight’s affairs. I came here after discovering that there was such a class meeting in her mobile phone."

Song Wen asked, "Then why did you pretend to be your sister and didn't tell the truth to other classmates?"

Ji Meiyun hesitated and said: "I didn't intentionally hide my identity at first, but when they saw me, they assumed that I was Ji Meiyu. They all called me a beauty, and they asked me what happened back then. I discovered the nature of this dinner. I don’t think it’s a good time to confess the truth. I played the role of my sister. In fact, I’ve been thinking about how to tell them the truth..."

She paused, "Police officer, all this has nothing to do with tonight's case. If you don't have other evidence, I have nothing to explain. And you just said that Zhao Yuliang was on the rooftop before? Maybe he pushed Zhang Dongmei down?"

Ji Meiyun now also found the key to the case, the evidence!

The video evidence they got can only point out that she had been on the rooftop in the last time.

She is not Ji Meiyu, and it can only represent her to come to a class reunion instead of her sister.

All these can only prove that she is very suspicious, but cannot prove that she is the murderer of Zhang Dongmei.

Falling from high-rise buildings, it was originally difficult to define suicide or homicide as a way of death.

The police are also unclear whether Zhao Yuliang did anything on the rooftop.

Zhang Dongmei's body, surveillance, physical evidence, and confession, besides that, what else can prove that what happened on the rooftop at that time?

There is a lack of critical direct evidence.

If they can't prove that Ji Meiyun bites her confession to death, it is very likely that in the end, the murderer will not be locked in this case.

The air in the room froze for a while, whether it was the judge or the judge, both sides became quiet, and even on the street below, those who had seen the fireworks before had already begun to leave.

The grand performance has ended, but they have not yet identified the real murderer.

A suspect was in front of her, but she could not finally confirm her evidence.

It seems that there is only one step away from the truth, but I have to stop there.

Lu Siyu raised his head and looked at Ji Meiyun. The woman in front of him looked like a hot flame. Her tears had dried up long ago, and the corners of her eyes and brows showed a little pride. Then her chin lowered and a touch was buried in it. red.

Lu Siyu's good-looking eyes suddenly moved. He thought of something. He stood up from the table, took out the evidence in his pocket and put on the gloves, and walked straight to the woman in front of him.

Song Wen was a little puzzled, but he knew that Lu Siyu must have discovered something.

Ji Meiyun seemed to have not expected it. At this moment, the policeman on the opposite side suddenly made such a move. Her neck shrank a little later, and her beautiful eyes looked at Lu Siyu warily.

Lu Siyu walked to the opposite side of Ji Meiyun, and the gentleman bent down slightly.

For a while, the eyes of the two people faced each other.

Lu Siyu faced Ji Meiyun’s beautiful face and looked at her bright lips. If the woman in front of him is a murderer, then she must have excellent psychological qualities. She is bold, meticulous, and has excellent acting skills, like a cunning. Fox.

She dare to say that, because she has long confirmed that it is difficult for the police to find any evidence. It is likely that she has considered it before. There is no trace or witness. If any evidence is left, she will definitely be handled carefully...

What is the truth tonight?!

Lu Siyu blinked his eyes, and suddenly stretched out two slender, gloved fingers, and grabbed the red silk scarf tied around Ji Meiyun’s neck. The silk scarf has been tied around Ji Meiyun’s neck and her coat. Very well matched.

The silk scarf is tied with a live button, and a red flower is punched on the side of her neck, which makes her more beautiful and beautiful.

With the pulling of Lu Siyu's fingers, the red flower moved slowly, slowly unraveling, and finally was pulled down with his movements, turning into a fluttering red square silk scarf.

Ji Meiyun's eyes flickered, her face suddenly pale.

Lu Siyu took the silk scarf in his hand, and then he opened his mouth and said: "When I was looking at Zhang Dongmei’s body before, I found that the deceased fell from upstairs. The corpse has formed. Her left hand is Half fist, the right hand is a clenched fist. When I started to examine the body, I thought she would hold something in her hand, and I explored it with my hand, but found nothing..."

Having said that, Lu Siyu lowered his head and looked at the red silk scarf in his hand, "Now I have a clear idea, maybe when he fell downstairs, the deceased did catch something in his hands. The murderer rushed down the stairs first. , Took away what was in her hand. This caused her right hand to remain in a tightly held posture when the body was stiff."

"What exactly did Zhang Dongmei hold in his hand at that time?" Lu Siyu lowered his eyelashes and asked Ji Meiyun in front of him softly.

Ji Meiyun's beautiful eyes looked up at him, listening to Lu Si's words, she pressed her red lips tightly, and she felt unprecedented tension.The questions he asked were not as aggressive as Song Wen, but pointed to the source of her fear...

Lu Siyu didn't expect her answer. His eyes fell on his right hand, and his eyes were mixed with light and dark: "I think it might be this silk scarf?"

Listening to Lu Siyu's description, a picture appeared in front of Song Wen's eyes. The last person on the platform was Ji Meiyun. She did not communicate with Zhang Dongmei too much, and angrily pushed Zhang Dongmei down from the guardrail.

Zhang Dongmei was caught off guard. She stretched out her hand, trying to catch something. At the moment of falling, she grabbed the red silk scarf around Ji Meiyun’s neck, and the red silk scarf was taken off instantly. As Zhang Dongmei fell, she fell. Down.

Panicked, Ji Meiyun hurried downstairs and threw himself on the corpse before everyone else, blocking everyone's sight. Before people could react, he secretly pulled out the red silk scarf from the corpse...

That is the decisive evidence that has been hidden!

Lu Siyu's delicate face was still calm, and he squeezed the silk scarf in his hand: "Zhang Dongmei fell to her death and coughed up a lot of blood before her death. You think this silk scarf might be caught by her. , Will it happen to be contaminated? Will the blood stain match the splash marks? This silk scarf is red, and you don’t want us to find that you have less silk scarf on your neck than when you were eating before, so you put The silk scarf is tied back. Once you leave tonight, you will probably destroy the silk scarf, but it's a pity..."

Ji Meiyun once considered whether to throw away the silk scarf or go to the toilet for cleaning, but she felt that no matter what kind of treatment it was, it might aggravate her suspicion.

She chose a bolder way of covering up and tied the silk scarf back.

She may be only a short distance away from escape, but the French net is magnificent and careless...