Up at the Wall, in a completely shocking turn of events, Darren Criss saves the commander’s life when one of the dead bodies we saw earlier comes back to life as some sort of White Walker zombie. One again, Samwise Gangee turns out to be useful: he’s read about the White Walkers in a book, and knows that they can only be killed with fire. Which, when you think about it, might have been a good thing to mention WHEN THEY BROUGHT THOSE OBVIOUSLY NOT DEAD BODIES INTO THEIR KEEP!!!