Flashback to half an hour ago "My stomach hurts, I want to go to the toilet first. You wait here first," the security guard said to his colleague who was already preparing to go home because of their shift change. "Don't be long. I have to go home soon because my child is sick," said his colleague in a hurry. After the security guard left the CCTV room, his co-worker got a phone call from his wife. His wife said that their son had a high fever and needed to be taken to the hospital immediately. Without thinking, the security co-worker left the CCTV room empty. Not long after, a person dressed in a nurse's uniform came into the room. It was also seen from a distance someone was lurking in the direction of the room. The nurse quickly deleted the CCTV footage that was on the computer screen. "I've deleted the tape," he said in a phone call to people lurking from a distance. After everything was done, the person immediately left before the security returned.***"Earlier I had p