Goodreads asked Sandra Masters:

Where did you get the idea for your most recent book?

Sandra Masters I wrote the book in 2005 and let it rest for a long time. As I got more involved in craft, I revised it to reflect current standards. I never created a Duke I didn't fall in love with, or the strong willed independent spirited women who tamed them. Especially love rakes that begged to be redeemed. ONCE UPON A DUKE is the story of Lady Serena and His Grace Geoffrey Austen. It's spicy steamy seduction with swagger.

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