Director Huang pointed to the screen and said, "Then call up all the cameras from last night, and make sure to find out one of them!"

"Okay!" the police responded, and then called up all the surveillance last night, only to see a security guard on the screen on duty at the entrance of the police station, nothing special, after adjusting the time quickly, there was nothing abnormal.

Then the camera is next to the window, which is very important, if it is by the window, then it is very likely that the murderer entered from here.

Then the unbelievable happened, because all the windows were all in good condition, there was no sign of it, they were tightly closed all the time, the curtains were opened, and the moon on the curtains was facing the inside of the house, and the picture was always like this, and there was nothing strange about it.

Director Huang frowned and said, "No one has come in at the door, and no one has ever opened the window, will this murderer still run away?"

Jiang Fan shook his head and said, "If this is really the case, then this murderer will not be investigated as someone from the police station!"

Director Huang nodded and said, "What you said makes sense! Let's go and ask what those people were doing at that time!"

Then Jiang Fan and Director Huang came to the interrogation room together, and all the people in the Public Security Department sat in front of them, including the cleaning aunt.

Wang Li was also interrogating them, because Wang Li was with Jiang Fan and them at that time, so the murderer could definitely not be Wang Li.

The cleaning aunt said: "I leave work at eight o'clock every night, and it happened in the early hours of the morning, so it can't be me!"

Director Huang asked, "Do you have an alibi?" Maybe where you hid? And the place where you hid was the police station?"

Jiang Fan shook his head and said: "This should be impossible, because the video I just watched was the cleaning aunt who left here at about eight o'clock last night and came at seven o'clock this morning, so the murderer should not be her, not to mention that she is just a cleaning aunt, how can she be the murderer?"

Director Huang shook his head and said: "Little Brother Jiang, you don't know, I have handled a case before that was a cleaning aunt had an affair with the boss of the company, which is a very shameful thing, and then the wife of the company boss went to the company and insulted the cleaning aunt in front of everyone, and then slapped the cleaning aunt in front of everyone. ”

Director Huang continued: "Later, the cleaning aunt poisoned the company's canteen without anyone knowing, not only the employees were poisoned, but even the boss at that time was eaten to death, and the boss usually ate in the company without going out to eat, so he was poisoned and died." ”

Jiang Fan said after hearing this: "But that one is poisoned, this one is stabbed to death with a knife, the two situations are different, you see that this cleaning aunt is single and weak, how can she be Hu Yan's opponent, even if Hu Yan is already a little old, but he is a man after all." ”

Director Huang said: "I'm not sure that it must have been done by Aunt Cleaning, and now no one dares to say whether it is or not, you look at Hu Yan's death, his expression is frightened and surprised, it is obvious that he killed him when he went out and let him know, otherwise he would not have shown this expression!"

Jiang Fan nodded, then looked at Aunt Cleaner and said, "Auntie, may I ask if your husband was at home at the time, or a neighbor or something? As long as there is evidence that you are at home!"

Aunt Cleaning thought for a while and said: "My husband and my children are at home, my children have just come back from college, my husband and my children can prove it for me, and my neighbors, I also invited them to dinner when my children came back yesterday, they can all prove it." ”

At this time, a policeman came over and whispered: "Director Huang, we have called up the surveillance video of her home, and she was indeed at home when Director Hu was killed!"

Director Huang nodded, and then said to Aunt Cleaning: "Okay Auntie, there's nothing wrong, it's really troublesome for you, if you find anything, please be sure to inform us, this is the police station, we will never allow gangsters to bully the police!"

Aunt Cleaning said: "If there are any clues, I will definitely tell you as soon as possible!"

Then Director Huang and Jiang Fan interrogated the remaining people, and then everyone had an alibi, which is very unbelievable, could it be that this nonsense is really a suicide?

Director Huang fell into deep thought, and Wang Li looked even more confused, and said, "Will that killer be invisible?" or will he fly away?"

Director Huang said: "Those people can build such terrifying robots, and they can also operate trucks, what else can't they build?"

Wang Li shook his head and said: "Their technology will definitely not have reached this point, there must be a problem!"

Jiang Fan said: "Why don't we go and watch the surveillance video again!"

At present, there is only one way, so several people once again did it in front of the surveillance video, and the three of them each watched a video, one at the gate, one at the back door, and one at the window, and Jiang Fan looked at the window.

A video Jiang Fan saw the night again from noon, and still didn't find anything, and that time period was still the window, the curtains, and the moon on the curtains.

At night, in order to be able to find inspiration quickly, Jiang Fan came to the location where Hu Yan was killed at night, Jiang Fan looked around, and suddenly, there was a major discovery.

"Director Huang, Director Wang, please come over quickly!" Jiang Fan shouted fiercely, and suddenly Director Huang and Wang Li ran over together.

"What's the matter, little brother Jiang, have you found anything?" Director Huang and Wang Li had been staring at the video, their eyes were a little red and swollen, and they had just finished taking eye drops, and they ran over together when they heard Jiang Fan's shout.

Jiang Fan said: "Director Huang, Director Wang, if I'm not mistaken, this moon yesterday is in this position, right?"

Director Huang nodded and said, "That's right, but what does this prove?"

Jiang Fan said: "The position I am standing in now is the position where Hu Yan was victimized last night, please pay attention, there is a shadow under my feet, this shadow just escaped the window, and now it is just night, if I am not mistaken, we were a little off the position of the moon at that time last night, since this is the case, then Hu Yan's shadow should be reflected in this window, but there is obviously nothing in the surveillance video!"

Wang Li asked a little puzzled: "Could it be that the surveillance video is not clear enough, so I didn't see it?"

Jiang Fan shook his head and said: "No, the surveillance video can be seen, in this way, at that point in time last night, I will stand in this position to see if there is a shadow, if there is a shadow, then it can only explain one problem, the surveillance video has been manipulated!"

After hearing this, Director Huang and Director Wang were shocked, if this is really the case, then there are still accomplices of foreigners in their police station? Moreover, they are also people in the monitoring room.

Jiang Fan whispered: "Even Director Hu is already an accomplice of foreigners, and those little policemen must also have them, and it is estimated that there is more than one, so we must be mentally prepared!"

Director Wang said: "Then the problem is, the managers of those monitoring rooms have alibis!"

Jiang Fan smiled slightly and said, "That's right, Director Wang, that's why someone did something to the videotape!"

Wang Lileng paused for a moment, and then said, "You're right, then we'll try it for a while tonight!"

Jiang Fan looked at the time on his phone and said: "The time of Director Hu's death last night was 3:15 in the morning, and it is still early, we can take advantage of this time to take a good rest and get ready, and we can't tell anyone about this matter, because we are not sure who is the accomplice of those foreigners!"