Cahn discusses with THR her partnership with star Rufus Sewell and writing the “terrifying” finale. There’s always the hope that a show can continue to thrive past all of your first-grade ideas, which you lay out in the first season. Rufus got his first nomination for the show, and it feels appropriate since Hal takes more center stage this season opposite Kate. You end the season with Kate realizing Hal’s subtle, brutal betrayal. When you’ve achieved a finale by blowing a bunch of people up and then you’ve achieved a finale by having a president killed, having an interesting shift in one character’s attitude toward another character … is the most terrifying finale to write.