Seeing that the investigation of the case seemed to have reached an impasse again, Mu Zihan thanked him with a smile, and changed his mind and said: "Okay, I have probably asked everything that should be asked, thank you for your cooperation, we have already understood the situation at the time of the case." Next, can you take a look at www.biquge.info the surveillance video near the crime scene tonight? Maybe the murderer was photographed, after all, judging from the situation at the scene, he had been in and out of the deceased's cell. ”

"Yes, you are so polite, you are helping us solve the case, we should thank you." The two prison guards responded with a smile, and then the fatter prison guard continued: "As for the surveillance video, we have already retrieved it when we were on standby. ”

As he spoke, he turned to the computer behind him, and soon a video captured by a surveillance camera began to play on the monitor, and the time in the lower right corner of the video was 17:30 today.

As the video played, although several uniformed prison guards could be seen passing by the cell at the scene of the crime, no one at all had any contact with the deceased in the cell, not even stopping.

It wasn't until 18:03 that the thinner prison guard entered the video, he pushed the food cart, fetched a meal, and placed it at the delivery port of the cell, and did not see any conversation between him and the deceased, so he directly pushed the cart and went to another cell to deliver food.

Moreover, it can be seen from the video that the deceased should have been alive at that time, because, just when the prison guards put down their meals and didn't go far. The meal was pulled into the cell by the people in the cell.

In this way, more than 10 minutes after the screen was forbidden, suddenly, the angle of the camera seemed to have been moved, and it was obviously rotated. It is also because of this that the cell at the scene of the crime can no longer be seen from the video.

"Quick, go back to the time when the camera was spinning." Mu Zihan said nervously.

At 18:14, that's when the camera suddenly turns the angle.

"Is there another surveillance that can be seen at the bottom of this camera?" Mu Zihan asked.

"It turned out to be there, but it was broken a few days ago, and I'm preparing to rest these days." The fat prison guard replied.

"Was it maliciously vandalized?" Mu Zihan asked.

"It's not, after inspection, it's natural wear and tear." The fat prison guard said: "If someone maliciously destroys, we will inevitably be vigilant." ”

"Well, but it's too coincidental, apparently this murderer really knows the affairs of the detention center very well, and even knows that the camera is broken. Okay, that's all right, go ahead. Although Mu Zihan didn't say all the words, a clear-eyed person could already hear that judging from the current situation, the biggest suspect was undoubtedly the insiders of this detention center.

After listening to Mu Zihan's words, the fat prison guard let the surveillance video continue to play, and when the display time was 18:23, the angle of the camera was adjusted back.

From the camera, it can be seen that the door of the cell at the scene of the crime is closed as before, the only difference is that in the middle of the door, the tableware left after eating has been placed at the position of the food delivery port.

After that, at 18:28, the prison guard went to collect the tableware, and he seemed to look down at the food delivery opening, which was obviously consistent with his previous confession, obviously, at that time, he thought that the deceased Zhang Cheng had slept after eating.

However, judging from the scene of the crime and the autopsy, as well as the fact that the surveillance was deliberately reversed just now, in fact, the deceased was estimated to have been stunned by the murderer at that time.

After that, the picture in the video has been normal, and at 20:00, the prison guard appeared again because of his patrol. Finally, there is the image of the time of the crime, and everything is exactly what they said before.

After watching the video, Mu Zihan lowered his head and pondered, and after a while, he asked the prison guard: "When you went to collect the dishes, you should have looked inside, didn't you see a rope hanging in from the window?" ”

"No, in fact, the window is set so high that you can't see the location of the window from the delivery port. Moreover, it was already dark at that time, and there was no light in the cell, so I only saw that the suspect Zhang Cheng seemed to be lying on the bed, still covered with a quilt, and I thought he was already asleep. The prison guard replied.

"Oh." Mu Zihan nodded: "By the way, according to the forensic examination, the time of death of the deceased was around 8 o'clock to 10 o'clock, at that time, was it determined that only the two of you were left in the detention center?" ”

"This ...... I'm not sure, after all, my colleagues aren't suspects, we can't control their freedom, and there are many leaders, and I can't say for sure. I only remember that it seems that Director Lu left around 7 o'clock in the evening, because, in the afternoon, when he was on patrol, he forgot the car key in the duty room, so at that time he called me to help him take it down, and I watched him drive away. The prison guard recalled:

Then, he immediately explained: "However, the fat man was left in the duty room at that time, so at that time, there was not no one in the duty room. ”

"Oh, that's right." Mu Zihan looked back at Director Lu, who was standing on the side, and asked, "That means that Director Lu also heard that there was a case, so he rushed back to the office?" ”

"Well, I was getting ready to go to bed when I suddenly received a call saying that something like this had happened in the office, so of course I rushed over as soon as possible." Director Lu replied.

"I called the director to inform him, and after I called the police, I felt the need to tell the director about it, so I called him." The skinny prison guard added.

"What about the other leaders who are now on standby in their offices? Did you call it, Director Lu? Mu Zihan continued to ask.

"Yes, after all, such a big event has happened in the institute, how can they not be in charge of several main persons?" Director Lu said: "Detective Mu, are you suspecting that the murderer is among us?" ”

"I'm not completely sure, but relatively speaking, you're more suspicious." Mu Zihan also told the truth and did not hide it.

"I'll admit that it's true that all the clues so far have been very bad for the staff in our office, but I don't believe that our people in the office would do such a thing." Director Lu didn't seem to agree with Mu Zihan's statement, and said with a righteous face: "Moreover, although the main gate of our house is guarded by a doorman, we still have a back, which has been abandoned there. I always thought it was going to be a hidden danger, so I was planning to fix it all this time, but unfortunately it seems that it was still a step too late, and I knew that I should have started to fix it sooner. ”

"Director Lu doesn't have to mind, it's not sure where the murderer sneaked into the detention center, so it's a little early to make a conclusion." Mu Zihan comforted: "However, it is really necessary to confirm this long-abandoned back door. ”

(To be continued)