No "inside info" spoilers, please!! Just good ol' fashioned guessing.
First of all, this is the scariest fucking villain on TV, bar none. I get so creeped out every time I see that mask! Apparently he/she even has it's own "my space", but I'm too afraid to go look at it. I'm so queer.
Anyway... my money is on Ava, Matt's tranny girlfriend from last season. You heard it here first, folks. Who do you think it is?