The white Toyota pays special attention to dodging cameras all the way, and whenever it passes by traffic surveillance, the speed will increase, and even if it captures the people inside, there is only a virtual shadow.

Although she couldn't photograph anyone, from the route that Bai Toyota walked, and the sensitivity to dodge the camera, she could be sure that the murderer must have followed Hong Yi a long time ago, and stepped on Sheng Hao, who he frequented, and was familiar with the surrounding routes and the location of each camera.

This can also explain that Sheng Hao's place is full of powerful people, and the security is very tight, without the members there, even Director Cao can't enter in the past, and the murderer followed Hong Yi over, how did he sneak into Sheng Hao's interior in a short period of time?

She has seen the entire architectural style of Sheng Hao, and He Pingfei has also led a team to the roof of the building and the entire Sheng Hao to do an investigation, and if she wants to enter Sheng Hao, she can only go inside.

Ye Fan looked at Sheng Hao's internal surveillance again, the murderer was at six o'clock, and Hong Yi was still outside Sheng Hao when he arrived, so she started watching from six o'clock.

There are 12 split screens on the computer, which are Shenghao's main gate, four elevators, a five-story corridor, a back door security passage and a corridor to the top floor.

Ye Fan looked at the twelve split screens at the same time, she saw Hong Yi swaggering into Sheng Hao, the manager personally came out to bring him in, and then Hong Yi entered the No. 2 elevator and went directly to the fourth floor, until he entered the room, it was all right.

The people who entered and exited through the gate before and after him could basically see the faces clearly, and the information handed over by Sheng Hao, as well as the investigation data of the police, showed that these people did not have any suspicions, and they all had time witnesses or alibi at the time of the crime.

The four elevators are also level, generally speaking, the first and second elevators are all high-level VIP members like Hong Yi, and the third and fourth are ordinary members and Sheng Hao and waiter staff.

The people who appeared under surveillance at the back door security passage that night were all Sheng Hao's staff, a total of six people.

Looking at Sheng Hao's architectural layout, Ye Fan felt that if the murderer wanted to mix with Sheng Hao, in addition to entering through the gate openly, the only way to go was through the back door.

There were two security guards guarding the back door, and these two security guards were basically under surveillance, only at 8:52 a.m., one of them left for a while, and came back after about 20 minutes.

At 6:10, a cleaner wearing a cleaning uniform and a mask on his face went out of the safe passage with two bags of garbage to clean up, and greeted two security guards, chatting a few words, he should be an acquaintance, and came back ten minutes later, and greeted the security guard again.

At 9:12, a young man in a down jacket came over with a backpack, smiled and showed his ID to the two security guards, and then went in.

At 11:41, a waiter wearing a mask and a small red vest came out, handed two cigarettes to the two security guards, and then leaned against the door and chatted with them for a while, then waved his hand and left, judging by his body shape and demeanor, it should be a young man.

At 12:10 a.m., a cleaner pushed the cleaning cart through the safe passage and did not go out, but turned into another corner door, where the cleaning tools were placed.

After that, the police found Hong Yi's body, and the whole Shenghao was under martial law, and He Pingfei appeared with two police officers.

And the corridor to the top of the building monitoring, because there is generally no one to pass, although the camera can be used normally, but from time to time there is a current rushing by, feeling that it will be scrapped at any time.

At half past nine, the camera suddenly made a sizzling electric sound, the picture trembled and shook the snowflakes, and then the whole picture became a piece of snowflakes, if there was no fatal case, you might think that the equipment was old and broken, but now, it was obviously cut off by the murderer.

It was at this time that the murderer entered the roof of the building, because no one else would set foot in this corridor, and the murderer could no longer avoid or disguise it, so he could only directly break the camera.

Ye Fan moved the mouse and clicked on the computer a few times, and there was only one of the twelve divisions left, which was the camera at the back door.

"The murderer must be one of these people. Ye Fan narrowed his eyes dangerously, during this time, one of the people who entered and exited the back door must be the murderer who infiltrated.

First of all, the two security guards ruled out that they were always under camera surveillance at the time when Hong Yi said he was killed.

Then the rest are the remaining four.

Ye Fan carefully observed their every move, especially paying attention to their hands, but unfortunately, they didn't find any traces of wearing bracelets in their hands, and their behavior was very natural, she couldn't see any traces of their acting?

Was the murderer's acting too good? Or was she wrong?

The pitch-black gaze turned slightly, and Ye Fan called up the list of Sheng Hao's staff that night, as well as their confessions, separately and studied them carefully.

Ying Jiu stood behind her, pinching her waist and back, serving tea and water, looking at the serious and focused side eyes, full of tenderness and doting.

Suddenly, Ye Fan straightened up and startled Ying Jiu, who was staring at her intently, and thought that she was found by peeking, but she ignored him, drawing circles on the paper with a pen, and he raised his eyes to see that the pieces of paper she drew seemed to be what she said.

Ye Fan snorted twice, his dark eyes flashed, and the display screen on the computer was suspended on the young waiter wearing a mask, he was leaning on the door frame, wearing a very ordinary sports cap on his head, and wearing a mask on his face, even if he was facing the camera, he couldn't see his face.

He naturally handed cigarettes to the two security guards, talked, and showed familiarity with the security guards in his every move, and the two security guards also looked like they were talking to acquaintances, I don't know what to say, and patted the waiter's shoulder, just looking at the picture in the surveillance, I will think that this waiter is the real waiter in Shenghaoli, and he will be so familiar with the security guard.

However, she carefully studied Sheng Hao's employees on duty that day, as well as their confessions, and found a suspicious point.

The working hours of Shenghao's employees are shifts, three shifts, and the time of shift change is eight o'clock in the morning and five o'clock in the afternoon, and they generally enter and exit from the back door, so after six o'clock, there will be so few people entering and exiting the back door.

There were a total of 30 employees and managers on duty that night, including 18 waiters and 3 cleaners, which was the number registered on the duty schedule, but in fact, among the 30 people, there were indeed 19 waiters, but there were only two cleaners.

Is this a cleaner turned waiter?

The answer to this question was obtained in the confessions of these thirty men.