12pm, I stayed alone in office room.

I had lunch then I slept on the chair. I locked the door before I went to sleep. I lay on chair and closed eyes.

There was a knock on door. I got up and opened the door. No one was there. I locked then came to sleep. I closed my eyes. Knock again. I went to see. There was no one.

Knock and knock…

I started to doubt. I started to fear, but I tried to calm down. Then I found a way. I scolded louder and louder. After that I went to sleep. Nothing again. I slept peacefully till work time.