This season's major turning point – the wedding day massacre at the Twins – also happens to be Michelle Fairley's favorite scene of the past three seasons. The actress talks to HBO.com about filming the scene, Cat's issues with Jon Snow, and why she's always making those prayer wheels.
HBO: What was going through Cat's mind when the "Rains of Castamere" starts to play?
Michelle Fairley: I remember shooting that and having to turn. She's thinking, "What is this music?" It says something ominous to her, like something has walked over her grave; her hackles are up. But she doesn't know what it is because she's an honorable human being. The last thing on her mind is that Walder Frey would use this occasion to seek his revenge.