I really enjoyed your Emerald O'Brien books (Chintz n China series), and I am looking forward to Night Myst. A few people have mentioned Nora Roberts and JD Robb--I like Nora Roberts' books, but I don't care for her books written as JD Robb. My favorite non-fiction writer has also expanded into fiction, and I'm not a huge fan of his fictional works, but I adore his nonfiction. Having said that, I'm always willing to try a new series/genre by an author I know I already like, so from a marketing/advertising perspective, there's a benefit of an author spanning more than one genre (or series), as a portion of the market for that book will already have been established via the author's other works.