That strange feeling ...
The feeling of walking around the room at night and knowing something is totally wrong. You decide to ignore this feeling.
Turn off the light and move quietly to bed. Thinking over something thoughts are slowly melting. But suddenly a picture will appear a picture of something you would not want to see in the worst nightmares. Eek! It's morning and you're awake nothing happened.
.... But try to imagine what would happen if you were stuck in that nightmare?