"There is a reason monsters hide under a bed. 
We are more scared of you than you are of us. 
That look on your face, that scream on your lips when you eventually see us. 
It's enough to make us forget we were ever humans at all. 
It's a thread of humanity that makes us eventually crawl out from under the stairs and show ourselves to you. 
'Cause even a monster can be afraid of the darkness."
Josh Levison, Being Human