A scene from “Unfinished Business”

Jessica Fletcher: [after deducing the murderer's identity] Carrie wasn't so much a murder victim as much as she was a means to an end, and I suppose that's what makes this so hard to accept. I mean, a smart killer would have injected Carrie with insulin, so the murder would not have been detected. But you wanted the murder discovered, Ruth, and you made sure that the clues pointed to your husband.

Sister Ruth Fargo: No.

Jessica Fletcher: When I first met you, I assumed "Sister Ruth" had a religious connotation. But when you said that you'd met Willie John in London when he'd had a diabetic attack, it made me wonder if the term "sister" might not refer to your former vocation. A nurse. It would have been simple to find a uniform in the locker room downstairs and washable hair color spray. The kind Mr. Whittaker's secretary wears is available at any all-night drսg store. If anyone had seen you from a distance, they'd have mistaken you for Sue Beth. You even wore gloves so that Willie John's fingerprints would still be on the syringe.

Earl Fargo: Ruth, why? Did you do it for Willie John?

Sister Ruth Fargo: For Willie John? No. I did it to Willie John. Or I tried to. I had to be free of him, but that meant destroying him totally. I tried to tell you, Mark. I couldn't. As much as I know you love me, you could've never understood. Willie John was crushing me, Mrs. Fletcher, wringing the life out of me with his sanctimonious piety. I'm a woman, and every day I've been getting older and older, living like some plaster saint. The dutiful wife of the great and good Willie John Fargo. What was I supposed to do? Divorce him? Oh, my God. Can you just see the headlines? Or kill him? That would have thrust me into an even more untenable role. The keeper of Willie John's flame, living in chastity for the rest of my years.

Rev. Willie John Fargo: Ruth, why didn't you tell me?

Sister Ruth Fargo: I did, Willie John, every day in a hundred different ways. But you were always too busy to hear.