E! Online has recently spoiled the title for episode 3 of Pretty Little Liars season 4, and the name of a new character who will appear in said episode.
"Episode three of the new season is called "Cat's Cradle" and will introduce fans to a Tim Burton-ish character named Hector Lime, an unkempt sculptor who makes props and statues for horror movies. Oh, and he specializes in masks. Hmmm…"
"Tim Burton-ish" definitely suggests creepy. Sounds like this guy could be the one supplying all those 'A' masks, what do you think?