Seat42f is going to take a guess and say that Fahey has been cast as Jacob. Just a hunch and I'm sure it will turn out he's playing a "new" other or something, but it's fun to guess especially when we are 5 plus months away from season four. What do you think? Leave a comment below and let us know.
LINDELOF: And more importantly, we meet Jacob–the elusive, unseen, presumed leader of The Others–for the first time. And this is a character who is every bit of significance to our universe as the Emperor was to the Star Wars universe—a character that you didn’t get to meet until The Return of the Jedi but was referred to all through the preceding films. Jacob is a guy who is going to have a very significant ongoing sort of story value in our show.