Well, the dangerous anti-gravity machine is securd safely behind the door of a S.H.I.E.L.D. vault – for now, at least – but other aspects of this show remain up in the air. But not this show’s short-term future: ABC, pleased with its initial ratings, already has renewed it for the end of the season. In tonight’s new episode, a former operative returns with a vengeful agenda – even though it may not precisely be her own.