You feel the leaves crunching underneath as you run through the forest, taking no time to appreciate the scenery. A single second wasted could spell out your demise.

After a while you no longer hear it following you. 
It's hiding, but you're unaware. 
Unaware until it's right behind you.
Until it's heavy breathing envelopes your form.

You turn to look at it.
It's sharp teeth glistening in the moonlight as it looms over you. Hunger in its eyes as it opens it's jaw.
You close your eyes, awaiting your fate.
Then you open them, and you're left looking in the mirror.
The beast is gone and all that's left is your own reflection.