The first eight episodes or so of season 1 are incredibly good. It dips a bit after that; it becomes too prone to what makes network television so annoying - for a film all about time (in its initial premise), it's become less and less creative in its handling of commercial breaks (and the cliffhangers that come with them) and it's become easier to spot its narrative patterns. It's not difficult to see who's going to turn traitor or be killed off before either happens.