“Julie Plec: She's staring up longingly and you realize this is a character that wants something, that needs something emotionally. She is being driven by a deeply personal want here, and that sort of became the rule on the show that if you have a villain, the villain has to be the hero of their own story, they have to have a deeply personal rooting interest. That's the moment where I fell in love with Katherine as a hero of her own story. I had so much empathy for her in that moment.”