You approach the hooded figure. "Excuse me, do you work here?" you ask "The thing is, I've been accidently locked in here overnight. I'd be very grateful if you could just open.."
You stop at mid sentence when you see the hooded figure's foot sticking out from under their robe - actually paw is the better word because even in the full moonlight you can see it's an animal paw with sharp claws.
The figure lowers it's hood and you see it's a werewolf! You scream as he lunges for you...