I'm an ER nurse. I've been threatened, bitten, shoved, jumped at, stared down, and spat at, etc. etc. just part of the job in an area with high substance abuse problems. But by far, the scariest thing that I have ever seen was a 14 year old kid who felt that they were possessed. They stayed in one position sitting on the gurney with their hands folded in their lap for hours with their face face pointing down and their eyes staring up... I've watched wayyyyyy to many scary movies! It creeped me out for days!