We're finally entering the ZFT endgame, which ends up being a bit of a bust: Nina is shot, but she's fine. Everyone is looking for William Bell, who we now think is the ZFT leader. Walter yoinked by the Observer, mostly so he can reminisce on the """something""" he lost and check out the grave of ... Peter? ZFT is stopped and Olivia is off to meet Belly, who's taken up residence on a parallel earth.