Each week on Slate's TV Club Insider podcast, the creators, cast, and crew of The Americans reveal behind-the-scenes details about the making of the FX drama's third season.  In this installment about the sixth episode, “Born Again,” Keri Russell, who stars as Russian spy Elizabeth Jennings, joins script coordinator Molly Nussbaum and executive producers Joel Fields and Joe Weisberg to discuss on-set challenges, the best (and worst) part of wearing so many disguises, and her own personal contributions to the crafting of a scene.     Note: This podcast contains spoilers and is meant to be enjoyed after you watch the episode.