After Ding Can sat down, he waited for another minute, the real time on the screen was twelve twenty-one, and a waiter came to order food for her with the menu.

Because he had already chosen what he wanted to eat before, Ding Can ordered food quickly, and he didn't look at the menu brought by the waiter at all, he opened his mouth to say it, but he couldn't hear what she said, he could only see her mouth moving.

The waiter took a pen in his hand and wrote down the dishes ordered by Ding Can on a piece of paper, and then turned to leave, at this time another waiter poured Ding Can a glass of water and put it in front of her, without saying anything.

The police also questioned the owner of the restaurant and the two waiters, and what they said was not wrong with what was shown on the surveillance, and the restaurant owner also showed the menu that Ding Can ordered at that time, which was a bowl of rice, a stir-fried potato chips, a small dry pot bullfrog, and a bowl of mushroom soup.

The glass of water poured by the waiter has also been verified by laboratory to be without any problems, and there is no possibility of being poisoned.

After Ding Can finished ordering, she took out her mobile phone and looked at it, until 12:38, she put her mobile phone in her bag, and then got up and went to the bathroom.

In less than a minute after she left, the waiter brought all the food and dishes she had ordered.

Since there is no possibility of monitoring in the bathroom, it is impossible to see what happened to Ding Can after he entered.

At twelve :43 a.m., a middle-aged woman ran out of the bathroom in a panic, kept opening her mouth and screaming, and then several people rushed in, and soon ran out in a panic, and then one of them took out her mobile phone to call the police. The time was exactly 12:45.

The police also investigated the people who had entered the women's restroom, and none of them had the time or motive to commit the crime, so they were all ruled out.

According to this time calculation, Ding Can was in the bathroom at 12:38 and was found at 43 minutes, with a total of five minutes between before and after, which means that she was killed within these five minutes.

Just looking at the surveillance, there are only two things that can be proved, that is, Ding Can was killed in the bathroom within five minutes from 12:38 to 43 minutes, but it is impossible to see who did it.

"It doesn't seem to be very useful. Ouyang Qian shook her head and said with some dejection, she originally wanted to find the murderer with surveillance, but now she has seen it again, but she can't see anything.

"Didn't the murderer leave any other clues?" Huang Fei asked with a frown.

"There are so many people in the bathroom that there is no way to extract valid footprints and fingerprints. Said a police officer in charge of technical investigations.

"If a case like this happened in the women's restroom, the murderer must also be a woman, right?" guessed a police officer.

"That's not necessarily, there are a lot of women who kill people, but the techniques are so neat and neat, and I really haven't seen them so ruthless, besides, who said that only women can enter the women's bathroom, and no one is stopping them at the door. Another policeman disagreed.

"Why was Ding Can only found out five minutes after he went in, there were so many people eating at that time, didn't anyone want to go to the bathroom in these five minutes?" Huang Fei asked a little strangely, judging from the surveillance, no one had ever entered Ding Can since he entered the bathroom, until the middle-aged woman went in five minutes later and found Ding Can's body.

"There is no way to explain this, it can only be said that it is a coincidence, just in time, the deceased did not go to the bathroom for a period of time after entering the bathroom, although we also think it is strange, but we cannot find any evidence to prove that it is unreasonable. A policeman said helplessly.

"Can you put it again? I'd like to see it again. Huang Fei said to the policeman who controlled the surveillance broadcast.

"Okay. The policeman nodded, pressed his fingers on the keyboard a few times, and then the picture jumped, and it went back to when Ding Can entered the restaurant.

Huang Fei's eyes widened, and he stared carefully.

Ding Can walked in, then stood in the corner, then sat down, ordered, there was nothing wrong with these places. Huang Fei couldn't help but shake his head, and continued to look down.

Ding Can sat on a chair, his elbows pressed against the table, holding a mobile phone in his hand, playing there intently, and a smile appeared on his face from time to time.

There is nothing wrong with this place, playing with mobile phones in the gap between waiting for dishes, many people do this, and Ding Can's regret record has also been called up, during that time period, she has not answered calls or sent and received messages.

When Huang Fei stared at Ding Can, he suddenly found that her image in the picture had dimmed for a short time, about two or three seconds.

"Backwards a little. Huang Fei said to the police.

Then the surveillance footage rewinds a little back.

This time, Huang Fei's attention was no longer on Ding Can, but behind her, he wanted to see what made Ding Can's image darken.

Ding Can sat there, but the restaurant was still very crowded, from time to time there were guests who had finished their meals and got up to leave, and many people who were ready to eat walked in, so there were always a lot of people in the restaurant.

Huang Fei noticed that in the crowd, there was an old man, yes, an old man was squeezed behind Ding Can, who was playing with his mobile phone at that time, and the old man's eyes seemed to glance at Ding Can's mobile phone unintentionally.

In fact, this is also a very normal thing, when each of us passes by others, as long as the other party is playing with a mobile phone, more or less will make such an action.

It's just that Huang Fei felt that this old man was a little strange, because after he saw Ding Can's mobile phone, his eyes were fixed on it all of a sudden.

Although it was only for a short time, Huang Fei still noticed this, and he even felt that the old man seemed to have a very happy reaction, as if he had discovered something he had always wanted to discover.

"Something is wrong with this old man. Huang Fei thought secretly in his heart. Since Liu Lin Li Fu and them appeared, then there were three masters sent by the Chen family to kill him, and now he is very sensitive to the old man.

Seeing the old man who appeared in the surveillance, Huang Fei seemed to feel something.

The old man left quickly, but Huang Fei shifted his attention to him, and he intuitively sensed that this old man would be a breakthrough.

The old man moved his steps with the movement of the customers in the store, and sat down in a seat separated from Ding Can by two tables, and he was also ordering food decently, but Huang Fei found through careful observation that the old man had been observing Ding Can intentionally or unintentionally.

In this way, Huang Fei became more and more sure that this old man had something to do with Ding Can's death.

When Ding Can got up and was about to go to the bathroom, the old man also stood up at the same time, because he was closer to the bathroom, so he took a step to the door of the bathroom before Ding Can.

But this is the women's bathroom, he is a man, how dare he walk in in broad daylight?

Huang Fei continued to observe him, and just as Ding Can was about to walk to the door of the bathroom, a strange scene suddenly occurred.

All the guests in the restaurant, including Ding Can, all turned their heads to look in the other direction.

"Backwards a little more. Huang Fei said again.

After the surveillance footage was rewinded, Huang Fei focused his attention on the direction in which the guests in the restaurant were looking.

That direction was where the old man had sat before leaving.

Huang Fei noticed that the old man made a small movement before leaving.

The waiter in the restaurant would pour a glass of water for each guest and put it in front of him, Ding Can had one, and the old man was no exception, he got up to leave, his hand was on the glass, and then moved the glass to the edge of the table. After he left, the glass was still on the table, but the bottom of the cup was already half in the air.

In other words, only half of the cup is placed on the table, and it is crumbling, and at this time, as long as there is a slight collision or shaking, the cup will immediately fall off the table and fall to the ground.

There are so many customers in the restaurant that it's crowded, and collisions are inevitable.

Just as the old man walked to the door of the bathroom, a guest passing by the table accidentally touched the table, and the glass of water on the edge of the table fell down at that time.

The water cup is 20 centimeters high, made of pure glass, which is considered a large cup, and the distance between the table and the ground is nearly a meter, and a large glass falls from the tabletop at a height of one meter and falls on the tiled floor, the sound must be very crisp.

I believe that whoever hears such a broken sound can't help but look back.

But it's normal to break cups and saucers in restaurants, and people don't care when they find out, including the police.

The old man had calculated that he was going to use the sound of the cup breaking to attract all the attention of others, and then he would take the opportunity to get into the women's bathroom without anyone noticing.

Seeing this, Huang Fei already had an answer in his heart, the old man found out that Ding Can was going to the bathroom, so he went in one step ahead of schedule, waiting for Ding Can inside, and after Ding Can went in, he took the opportunity to kill Ding Can, everything was done so seamlessly.

"Can I make a copy of this surveillance and go back to study it?" Although Huang Fei had already discovered the murderer, he didn't want to tell the police, because if the police intervened, it would bring great trouble to his revenge action.

Revenge is his own business, and he doesn't need the police to intervene.

The reason why he wanted to copy a surveillance video, Huang Fei's purpose was to print out the photo of the old man, and with the photo, it would be easy to find someone, but he couldn't tell the police, so he could only say that he would copy a copy and go back to study it carefully.

"I'm afraid not, although you have a relationship with the deceased, but you are not the case-handling agency, you can watch this kind of surveillance video here, but you can't take it away, this is criminal evidence, and it is not allowed to be leaked. The police officer in charge of the case said with some embarrassment.

He could understand Huang Fei's feelings, but the rules of the police station made him unable to agree.

"Can you be accommodating?" Huang Fei looked at Ouyang Qian, hoping that she could help him.

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