My editor has approved the revisions for Stay the Night, so Robin's book is finished. Because I also wrapped up quite a few storylines in this one, including that of the series protagonists, Alexandra and Michael, I'm going to consider these seven books as a finished set. This is not to say I'll never write another story about the Darkyn or the characters from these novels, as I've discussed future possibilities for both with my editor, but as a series, I feel this one is complete.
Look at it this way: if I get hit by a truck tomorrow, only my StarDoc readers will be pissed (and not for long; all my notes, outlines and plans for book ten are completed; I just have to write it after I get Crystal Healer out of here next week.)
Most writers will keep banging out a series as long as they can sell the books, especially if they're successful and bring in a lot of bucks. Publishers encourage this because they like to make money, too. But I think in the long term this limits the writer and exhausts the readership. We've all read the series that should have ended three, four, or even ten books back.
I didn't want that for Darkyn. Certainly I could have dragged it out for quite a few more books, given the number of characters who would have made great protags and the fertile storylines that kept wanting to breed on me. Still, I like that I was able to write what I wanted in seven novels. For lack of a better description, it just feels right. And if I never write anything that sells as well as these seven books have/hopefully will, I won't regret it. I'll just write Darkyn the Next Generation. I'm kidding.
Or am I?
Hmmmm. You'll just have to wait and see.