Was this a real spoiler or is Williams just trolling fans? David Benioff, one of Game of Thrones' showrunners, added, "Don't worry, they won't tell anyone." Right, because what happens at South by Southwest stays at South by Southwest? It's Austin, not Vegas, Benioff. But even his delivery seemed a little glib, too, so there's no telling whether or not we just received a major bomb or just a joke that fell flat. Sophie Turner stayed mum during the whole situation, which was probably a wise decision. After all, it's not like the Starks have a very good record of surviving.