A scene from “Unfinished Business”

Maggie Tarrow: [after Jessica exposes the murderer] Julian, why? Why?

Julian Lord: Why? To protect you, my darling, from Barbara. She was the one who planted the birth certificate. Oh, I figured out her game when I went back to the theater. She'd planned it all very carefully with the exception of my refusal to go on with her. Yes, then the real Barbara came out. I knew I would never be free of her blackmail. Jessica, I had to do it.