Billie: Bending the rules already, Jack?
Jack: Billie. I tried to call you.
Billie: I know. I was busy. Can't say I'm not disappointed, though.
Dean: Disappointed? You just iced one of your reapers.
Billie: Merle had one job -- keep you in line. She failed. We're playin' a big game here, and we're only as strong as our weakest players. She had to go. That's the difference between you and me. I see the big picture. I understand that one life means nothing in the grand scheme. That girl you saved from a dying world. You think hers was the only one? They're all dying. All the worlds. Each and every world but this one.