Total speculation, and not spoiler: they need a new VP. Estes is hero of the hour. Anyone wanna bet he becomes VP, leaving Saul in the CIA?
And damn, I thought it was Galvez all season. Now, I'm not sure.
It could be Mike - no one suspects the nice guy. But he couldn't have got the razor to that inmate last series. He's not near enough to the CIA, even though he's intelligence.
Saul? Could be. Carrie? If they want to jump the shark and give her a split personality and no recollection of it Oh I shouldn't suggest that. It might happen.
Brody was never supposed to survive series 1 of Homeland. I know he's signed for 5 series, but who knows what that means really. There will always be terrorists, bad guys, moles...I guess we'll see a new threat next season?