Don’t open it to anyone
Once upon a time there was a girl. Her mother died, and her father worked hard, and the girl was always left alone at home. One day, Dad got ready for the night.
«Don’t open it to anyone. If I come back, I’ll knock three times, «he said, and left.
The little girl cried a little and went to bed. Suddenly, someone gave the door handle a gentle tug. Maybe I imagined it? The girl tiptoed down the hall and peered through the peephole, but it was very dark. Apparently, the light bulb burned out.
«Who’s there?» — What is it? «she asked in a whisper, but no one answered.
The girl went back to bed and tried to sleep, but suddenly there was a knock twice.
«The boys must be playing around,» she thought, when suddenly someone kicked her three times.
... 
