There is a murderer hiding in the community, and the property manager informed everyone in the group to close the doors tightly and wait for the police to arrest him before going out. After a while, the group informed me that the murderer had been caught. At this time, there was a knock on my door, and I saw through the peephole that it was a policeman. Police: "Comrade, please open the door for routine inspection. Just when I was about to open the security door, words suddenly flashed in front of me!