Re: American Horror Story: Asylum (Spoilers)
There's a Wiki entry which I read the other day saying that the French actress (I forget her name) might be bloody face because he has "her eyes." In any event, I don't believe the serial killer to be demon-possessed; nor is he/she an alien. A mutant maybe.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."
--Bilbo Baggins, LOTR: Fellowship of the Ring