She looked into the mirror. A figure behind her grinned, but there was no one there when she turned around.
One story could be 'I always sleep with a nightlight. Last night, I woke up to find it off and a cold hand on my wrist.' Another might be 'The old doll in the attic blinked. Now it sits at the foot of my bed.'
Another one could be 'I heard a scratching at the window all night. In the morning, there were deep gouges on the glass and no sign of what made them. The simplicity of two sentences can create a very intense and spooky atmosphere.
Here's another. 'I woke up to find the world silent. When I looked out the window, all I saw were shoes.' This is scary as the silence implies something is very wrong, and the sight of just shoes is strange and makes you wonder what happened to the people.
One story could be 'I always feel like I'm being watched at night. Then I realized the eyes in my portraits were following me.' It gives that sudden shiver of something abnormal in a familiar setting.
A really scary one is 'My sister said she couldn't see the man standing behind me. I don't have a sister.' Here, the sudden realization that something is very wrong and the idea of an unseen presence are really creepy. It combines the elements of a false sense of security and a disturbing revelation.
I found a doll in the attic. Its eyes followed me everywhere. It was really creepy.
I walked into the empty room. Suddenly, I felt a cold hand on my shoulder, but no one was there.
There was a knock on the door. Nobody was there when I opened it.
I woke up to find a shadow at the end of my bed. When I turned on the light, it was gone.
One: 'I woke up to find my reflection missing from the mirror. And I heard footsteps coming from the empty room.'