You notice the faint little glow in your peripheral vision.
You swivel to look behind you, but there's nothing really there behind you.
Take a look at the mirror again. You don't see anything there. Have you scared it away?
It's gone.
What was that?
You leave the restroom, certain not to see anything more.
You turn back on the light, just so you can see where you're going.
As your eyes become accustomed to the light again, you notice that something in the restroom has been moved. The soap. It's position doesn't look quite right.
Go back to work.
Move the soap back.