At 9:30 in the evening, in the center of Nancheng City, where there are many high-rise buildings, the grand ceremony on the banks of the Lunjiang River has just ended.

In the dark night, the night wind blew, and the pedestrians on the road were still reminiscing about the unforgettable moment just now, and the air was filled with the smell of fireworks.

On the fifth floor of Lianhua Mingyue Building, Song Wen and Lu Siyu, who were standing in the corridor, were separated by half a meter. Song Wen was stunned when he heard Lu Siyu's words: "How do you confirm it?"

"We only have a few confessions in hand now, and all judgment criteria are only the descriptions of the parties, and there is no more video data." Lu Siyu continued, in the empty and quiet corridor, his deserted voice caused a slight echo: "I think , We are now relying too much on the suspect's confession. Among the current confessions, some situations do not feel quite consistent. I just suddenly thought of a method, which may be able to identify who has boarded the platform tonight. …”

The key issue of the case is who has boarded that platform. It's like the black box of this case. To know what the truth is, you must crack the code.

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

Song Wen's eyes moved in the direction of his fingers, but he didn't realize what he meant for a while.

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

Song Wen lowered his head and looked at the ground in front of him. They had ignored the environmental factors before. The white and smooth marble floor tiles were like a huge mirror, reflecting a hazy reflection from it.

Song Wenxue has painted and immediately understood: "In other words, we can judge who passed through the corridor and went to the rooftop by the shadow on the ground and the reflection on the wall."

Lu Siyu nodded: "But this is just my inference. I hope the video is clear enough to be recognized."

If you can see clearly, it was originally just an auxiliary monitoring, and it can become the decisive evidence of who went to the rooftop, which can make up for the lack of evidence of insufficient image data in this case.

"Smart!" Song Wen became excited all of a sudden, wishing to pick up Lu Siyu for a spin. He glanced at Zhang Ziqi, who was standing in the corridor not far away, watching the suspects in several rooms, restrained himself, and snapped his fingers, "Let's go, let's go to the store manager's side to check the surveillance!"

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

Song Wen compared the time: "It can be inferred from the previous alarm records, that is to say, we only need to check the monitoring in the corner of the fifth floor from 6:30 to 6:50 in detail."

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

Song Wen stroked the back of the swivel chair with one hand and held the table with the other, standing beside Lu Siyu.

Lu Siyu raised his head and glanced at Song Wen. From this angle, he could see Song Wen's profile. At this time, he had a serious expression on his face, and his eyes were fixed on the monitor in front of him. The white fluorescent light reflected from the monitor illuminated He looked a little tough and handsome on his cheeks. It made his heart beat faster for a while.

The monitoring began to play, and the electronic data that had been recorded made up the image, which was constantly changing.

Lu Siyu looked at it carefully. The video in that place was like what the store manager said. It was about the finance room and the logistics department at the back. Some waiters could be seen walking around, taking things and invoices out of them.

"You can go faster." Song Wen said.

Lu Siyu pressed twice the speed, then thought about it, and pressed the speed four times.

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

Lu Siyu pressed pause, Song Wen lowered his body beside him, and observed carefully: "Look at the shadow, it should be short hair, relatively tall, this may be what Zhao Yuliang said when he went out."

The video was played for another minute, and another shadow appeared. The shadow appeared very quickly, and it just passed by in a flash.

Lu Siyu paused and took a few pictures. Song Wen squinted and looked carefully: "I can't see clearly, this shape..."

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

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

The monitoring continues to go backwards.

"Here!" Song Wen saw it this time, and pressed 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 nervously, but Song Wen didn't care. He lowered his head and pressed his fingers on the keyboard. After a few moments, the image is enlarged.

Lu Siyu followed Song Wen's gaze. There was a little blue light in the corner of the screen, if it wasn't for Song Wen's sharp eyes, he wouldn't be able to see it at all.

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 extremely easy to miss if you don't observe carefully. Fortunately, Song Wen's observation ability is excellent.

Then...it was the moment to test whether Tan Shan had lied.

The play button of the video was pressed down again with a click, and the two of them stared at the monitor screen with bated breath.

Time passed by every second, and at the moment when they almost concluded that Tan Shan was the murderer, a red light suddenly appeared on the white ground on the screen.

Red is undoubtedly much more visible on white than blue and other colors, albeit only marginally.

The red light stayed at the monitoring place for a while, and then seemed to walk towards the rooftop with some hesitation.

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

Immediately after the red color, another shadow crossed. This is 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 them, only Ji Meiyun was wearing a red trench coat all the time!

She was the last person to get on the rooftop. Ji Meiyun said she was panicking just now, and according to the reaction of the waiter in the store just now, Ji Meiyun was the fastest person to go downstairs to the scene. Tan Shan followed her closely, so it was very likely that she was really like Tan. Shan said that Zhang Dongmei was still alive when she stepped off the platform.

The suspicion of 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 even more suspicious.

But why did Ji Meiyun kill her teacher?

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

But surveillance doesn't lie...

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

Anyway, they found out Ji Meiyun's lie, she must have said it to cover up something, that can be used as a breakthrough for them.

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

The movement of Zhang Dongmei's fall is not small. Zhao Yuliang was on the rooftop, and he undoubtedly saw or heard something. He may also be lying, or he may even be an accomplice.

Song Wen straightened up, lowered his head and said silently, "But what was Ji Meiyun's motive for killing... Was it because of extortion or revenge for her past?"

Lu Siyu thought for a moment, then licked his lower lip and said, "Do you think there are some problems with Ji Meiyun's narration just now?"

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

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

Song Wenlai couldn't figure out the problem, and when he heard it at this time, he also realized that it was wrong. The story Ji Meiyun told before was originally very sad, but her description in the first half was a bit understatement.

When something like that happened, the child was forced to be aborted. For a woman, it was a major injury, and she should have an unforgettable memory...

But Ji Meiyun's description was like a bystander.

Lu Siyu frowned for a moment and suddenly said, "I think I 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's not Ji Meiyun who came to the party tonight, but her sister?!"

Today's special time, special place, destroyed physical evidence, and impossible forensic autopsy can only allow them to conduct an informal pre-trial here, and many steps have been simplified.

Such an interrogation process relies more on the confessions of these people. Those confessions and witnesses can give them more information and outline the relationship between the characters, but they can also mislead them.

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

But memories can be wrong, people can 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 taking advantage of this to hide her identity.

Lu Siyu thought about it and shook his head: "The ID card will not be faked. Zhang Ziqi recorded it against the ID card before. It is very likely that Ji Meiyun is the name of her sister."

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

Lu Siyu said softly: "Because she and her sister are sisters, they look alike. We haven't seen each other for many years. During the whole process, they called her a beauty..." That simple nickname has long been Replaced my sister's tongue-in-cheek name.

Song Wen opened the previous record sheet for verification, which contained simple information about each person, including name, age, gender, mobile phone number, ID number, address, etc. Those were all after the incident. Zhang Ziqi asked everyone to fill in it separately. When they arrived, the work had been completed, and Ji Meiyun's information was written on the last one, so no one found the anomaly, or in other words, someone found it too. Did not expose her.

From the moment they took over this case, subjectively, they locked the suspects of this case among these few parties, and hurriedly checked the basic information of these few people. After finding that there was no criminal record, they did not dig further.

"What should her sister be called..." Song Wen hurriedly called Zhu Xiao's phone, "Zhu Xiao, adjust the names of all the students in Teacher Zhang Dongmei's class in the class that graduated from Nancheng Junior High School ten years ago. ."

"Okay!" Zhu Xiao had been waiting in front of the computer tonight to be on call at all times. At this time, he got the order and quickly started typing on the keyboard. The student directory is not a confidential information. After the student registration is electronic, it is also easy to find.

In just two minutes, a list was sent to Song Wen's mobile phone.

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

Tan Shan, Zhao Yuliang, Qian Jiang, Meng Tiantian... These are all people they have contacted and interrogated tonight. Originally, they were strangers to these people, but after one night, they were already 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 about it for a while and then sent a voice message on WeChat: "Zhu Xiao, look up the ID photos of the two names Ji Meiyu and Ji Meiyun. You need the ID photos of junior high school and adult respectively."

Soon, a few photos were sent, and the two sisters did look very similar. Song Wen enlarged the photo of the two of them, looked at it carefully, and concluded: "It's not wrong for Ji Meiyun to come here today. Ji Meiyu has a mole under her right eye, her forehead is wider than her sister's, and her chin is wider than her sister's. It's a little short, but these features may not be distinguishable in the eyes of classmates who haven't seen it for many years."

Time will fade everything, memory will be blurred, and appearance will slowly change.

At a class reunion in college or high school, everyone may still have an impression of each other, but elementary school, junior high school... With the passage of time, many names have long been unclear.

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

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

This may also be what Lu Siyu felt was wrong with Ji Meiyun, because in the description just now, she was talking about her sister's experience.

In her mind, the identity transformation must be performed first and then the description.

She heard a lot of things, not her own personal experience, so she couldn't describe her empathy.

Zhang Dongmei was not her teacher, and she didn't have much direct contact with Zhang Dongmei in the past. Her reaction was completely unlike that of a student who killed her own teacher, so she was able to muddle through the layers of inquiries.

As for the name, Ji Meiyun may have used her sister's internet contact information to talk to other people. After everyone met, they were all called Ji Meiyu's nickname - Beauty. Therefore, some people do not know that she is not actually a classmate in the class.

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

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

"Then what's the basis of your judgment?" Lu Siyu raised his head and asked him.

"Have you ever had someone you liked? If you have a crush on the person you like, his facial features, appearance, and expression will all be engraved in his mind by a knife. After graduation, he will try his best to understand each other's feelings. Find the other person's photo." Song Wen lowered his head and looked at Lu Siyu, his eyes were hot, "If he really liked Ji Meiyu in junior high school, he should be able to recognize that the person in front of him might not be his own. Classmate. After all, Ji Meiyun doesn't have that teary mole in the corner of her eye."

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

"I didn't have it in junior high school." Song Wen replied decisively, "But now there is."

Lu Siyu regretted asking that question, his ears turned red again, lowered his head and returned the question to the case, he said softly: "Ji Meiyun is here to attend the class reunion instead of Ji Meiyu, so what is Ji Meiyu doing now? "

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

Song Wen quickly said: "Zhu Xiao, check Ji Meiyu's big data file and try to contact her." He thought for a while and then said, "Other people will also transfer a copy and send it to me quickly."

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

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

Ji Meiyun seemed to be a little surprised why she was called again. She didn't know the progress of the interrogation of the case. She looked at the three people in front of her with a little doubt, and her expression showed a little panic. Then she lowered her head and fiddled with herself with her hands. When he looked up again, the trace of panic was replaced by indifference.

Cheng Mo didn't follow Song Wen and the others to analyze the case just now. At this time, he was still a little unclear. He didn't know why Song Wen suddenly shifted his suspicions, but he had learned to be smart. Looking at Ji Meiyun, he stopped talking and just waited for Song Wen to ask. talk.

Song Wen asked, "Ji Meiyun, did you lie during the interrogation just now? You were not a student in Zhang Dongmei's class at all, but your sister Ji Meiyu."

Ji Meiyun knew that her secret was finally discovered, she simply put one slender leg on the other, and folded her arms and said, "Yes, I came to today's class reunion instead of my sister. In front of me, I have always used the identity of my sister. 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 remorse and the horror of the lie being exposed.

"Are you going to continue to quibble?" Song Wen continued: "We just checked the surveillance video on the rooftop and found that you were the last person to get on the rooftop. When you were on the rooftop, it was Zhang Dongmei who fell from the upstairs to his death. Time, you are the murderer who killed her."

"I just walked to the door of the rooftop, and just as I was about to go to the rooftop, the murder happened." Ji Meiyun's expression did not change, and she put the question back. She seemed to be certain that there were no cameras on the rooftop, probably because she had been on the rooftop, or she felt that if there was such definite evidence, the police would have suspected her long ago.

In fact, that video was only able to remove part of Tan Shan's suspicions, increasing the possibility that Ji Meiyun was the murderer.

Lu Siyu thought about it, maybe because Song Wen used Zhao Yuliang's testimony to deceive her once before, and this kind of trick is not very useful the second time. Ji Meiyun should have figured it out now, the police may not have found the direct evidence.

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

Ji Meiyun lowered her head and did not speak.

Just as he was talking about this, Song Wen suddenly received the message. He checked it and looked at her with a serious expression, "Ji Meiyun, we checked just now. Your sister passed away three days ago."

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

This time is too coincidental. A bride who was married suddenly died of illness. Does all this have anything to do with Zhang Dongmei? Most importantly, why did Ji Meiyun hide this?

This elder sister did not see the sadness of her sister's death. She did not take care of 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 shiny suddenly appeared in Ji Meiyun's big eyes, she hesitated for a moment, lowered her head, her long hair fell on both sides of her beautiful cheeks, she said, "Officer, I only admit that I am today. In place of the deceased sister, there is a class reunion that should not have appeared."

Song Wen thought she was about to cry, but when she raised her head, he realized that Ji Meiyun's eyes were dry without tears, but a sneer appeared at the corner of her mouth, "I was just panicking, but I didn't do anything else. As for my sister's death, it has nothing to do with tonight's events. I came here when I found out that there was such a class reunion on 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 for a moment and said, "I didn't intentionally hide my identity at first, but as soon as they saw me, they acquiesced that I was Ji Meiyu. I found out the nature of the dinner. I don't think it's a good time to tell the truth. I played the role of my sister, and I've been thinking about how to tell them the truth..."

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

Ji Meiyun has now also discovered the key to the case, the evidence!

The video evidence they obtained could only correct that she had been on the rooftop at the last time.

The fact that she is not Ji Meiyu can only represent that she came to a class reunion instead of her sister.

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

The falling of high-rise buildings is a way of death that is difficult to define whether suicide or homicide.

The police are not yet clear whether Zhao Yuliang did anything on the rooftop.

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

A key piece of direct evidence is lacking.

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

The air in the room froze for a while, and both the judge and the judge became quiet. Even on the street below, those who had seen fireworks before had already started to leave.

The grand show has ended, but they haven't pinpointed the real culprit.

A suspect is close at hand, but cannot conclusively confirm her incriminating evidence.

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

Lu Siyu raised her head and looked at Ji Meiyun, the woman in front of her was like a hot flame, her tears had already dried up, a little smugness appeared on the corners of her eyes and brows, and then she lowered her chin and buried a touch of it. Red.

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

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

Ji Meiyun didn't seem to have expected that at this time, the little policeman on the opposite side suddenly made such a move, her neck shrank slightly, and those beautiful eyes looked at Lu Siyu vigilantly.

Lu Siyu walked to the opposite side of Ji Meiyun, and bowed slightly gentlemanly.

For a moment, the eyes of the two met.

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

She dares to say that because she has long confirmed that the police will find it difficult to find any evidence. It is very likely that she has considered it before. There are no traces and no witnesses. If there is any evidence left, she will definitely handle it carefully...

What is the truth tonight? !

Lu Siyu blinked his eyes, and suddenly stretched out two slender, gloved fingers and pulled the red silk scarf tied around Ji Meiyun's neck. It matches very well.

The silk scarf was tied with a loose button, and a red flower was placed on the side of her neck, which made her more beautiful and beautiful.

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

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

Lu Siyu took the silk scarf in his hand, and then he said, "When I was looking at Zhang Dongmei's body before, I found that the deceased fell from the upstairs, the corpse has formed, and her left hand is Half fist, the right hand is a clenched fist, when I started to examine the body, I thought she would be holding something in her hand, and I tried to probe it with my hand, but I found nothing..."

Having said that, Lu Siyu lowered his head and looked at the red silk scarf in his hand, "Now I think clearly, maybe when the deceased fell from the building, something was really caught in the hands of the deceased, and the murderer rushed downstairs first. , took something from her hand. This caused her right hand to remain clenched when it froze."

"What exactly did Zhang Dongmei hold in his hands 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 Siyu's words, she pursed her red lips tightly, showing unprecedented tension. The questions he asked were not as aggressive as Song Wen's, but they pointed directly 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 didn't have much communication with Zhang Dongmei, and angrily pushed Zhang Dongmei off the guardrail.

Zhang Dongmei was caught off guard. She stretched out her hand, trying to catch something. At the moment of the fall, she grabbed the red silk scarf around Ji Meiyun's neck. down.

The panic-stricken Ji Meiyun hurriedly ran downstairs and jumped on the corpse before everyone else, blocking everyone's sight.

That is the decisive evidence that has been hidden!

Lu Siyu's delicate face was still calm, and he clenched the silk scarf in his hand: "Zhang Dongmei fell to his death and coughed up a lot of blood before he died. Do you think this silk scarf might be caught in her hand? , will it just be stained? Will the blood stains match the splatter marks? This scarf is red, and you don't want us to find out that you have less scarves around your neck than when you ate before, so you put The silk scarf is tied back. If you let you go tonight, you will probably destroy the silk scarf, but unfortunately..."

Ji Meiyun had thought about whether to throw away the silk scarf or go to the toilet for cleaning, but she felt that either way of dealing with it might aggravate her suspicion.

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

She may be only a mile away from escaping, but the French Open is full of omissions...