Sure. One could be 'I heard a knock on the door at midnight. When I opened it, no one was there but I felt a cold hand on my shoulder.'
Here's one more. 'The old house was empty. As I walked through the hall, I heard a child's laughter, but there were no children in the neighborhood for miles.'
One story could be: 'I woke up to a noise in the kitchen. When I went to check, all the knives were floating in mid - air.'
Sure. 'The last man on Earth sat alone in a room. There was a knock on the door.' It's terrifying because it makes you wonder what could be knocking when there's supposedly no one else left.
Sure. Here's one: I heard a strange scratching at my window. When I looked out, there was a faceless figure staring back at me.
She heard scratching from inside the walls. Every night it got louder. One day she found a hole. When she looked in, a pair of eyes stared back.
Another one: I woke up to find a cold hand on my throat, but no one was there when I turned on the light. It made me shiver all night long. I still don't know what it was.
Another horror two - sentence story is 'I walked into the basement. The moment I turned on the light, I saw a figure with no face disappearing into the shadows.' The lack of a face is very creepy and the fact that it disappears into the shadows as soon as the light is on adds to the horror, leaving the reader to wonder what that figure was and what it might do next.
Once upon a time, I walked into an old, abandoned house. The floorboards creaked ominously. In the corner, a shadow moved on its own. I felt a cold hand on my shoulder, but when I turned, no one was there. Then I heard a whisper, 'Leave while you can.'
Here is one. 'The old house was silent. Then I heard a voice whispering my name from the attic.'
Story 1: The old house stood alone in the dark woods. Every night, a cold hand would reach out from under the floorboards. Story 2: She walked into the empty classroom. A shadow on the wall began to take the shape of a menacing figure.
One story could be: I woke up in a dark room. The walls were damp. There was a strange smell. I heard a low growl. I tried to find a door but there were only walls. My phone was missing. The growl got louder. I saw a pair of red eyes in the corner. I started to scream but no one could hear me. I realized I might never get out.