A review of tonight's "Game of Thrones" coming up just as soon as I get lost on the way back from my embroidery lesson... "You just do what needs to be done." -Olenna There's always a certain level of role play going on in "Game of Thrones," as various characters try to fake it until they make it — whether that's to safer territory or greater power. Dany had to act the mighty Khaleesi long before she had the power she does now, Arya keeps trying to convince people that she's a hardened killer (and, at times, that she's a boy), Tyrion had to spend a while pretending like he belonged as the King's Hand, etc. But we get an especially strong dose of the idea in "Oath-Keeper," in which an abundance of characters choose to pose in new guises, or have these identities thrust upon them. Early in the episode,...