Murder, She Wrote, Season 8

Sylvia Moffett:
[after Jessica exposes her as the murderer] Mr. Greenstreet thinks I did it for him. But I did it for myself. Boss Lady had teeth and claws, and I didn't. She worked nights and made keys to all the offices. She copied people's ideas and claimed them as her own. She made love to the men who could help her. And when she couldn't use them anymore, she fired them. The day she became more powerful than you could handle, Mr. Greenstreet, that's the day you came to me, and I became your mole. I've got to thank you. It's the only thing that made it bearable over the years. That, and knowing that someday, I'd have my own kind of revenge.

Edgar Greenstreet:
Moffett, I ... I don't know what to say.

Sylvia Moffett:
Then stop calling me Moffett. My name is Sylvia.