A scene from “Unfinished Business”

Oliver Trumbull: [after Jessica exposes the murderer] Emma never harmed you.

Kitty Trumbull: But she was destroying you, Dad. Or couldn't you see it? You were so magnificent with a God-given gift that you prostituted to become a second-rate music hall comic. You couldn't break away. Every year, you got weaker and more dependent while I stood there and watched. You couldn't help yourself, Dad. But I could. Don't you see? I had to kill her for you.