Was watching The Impossible Planet last night and just wondering if maybe the Devil is the villain in the finale...may sound bit far fetched but what if the red eyed Ood wasn't a mistake in the spy photos and the response a red herring...how could someone get it that wrong anyway? Layers of fantasy and nighmares?? As the Doctor says in that episode, he shows you your greatest fears....all his companions dying, the Master...then he goes back and fixes everything? Just thoughts...