As I begin work on the fourth and last book of Citlalli I have come across a rather unexpected realization: I don’t know where the story ends. Oh, I know what the book is about, I know most of what’s supposed to happen, in fact I have known that all along, but seeing how this is the final book in the series I have a degree of freedom I didn’t have in any of the previous installments. I knew how, book one had to end if I wanted book two to make sense. I knew how book two had to end for book three to make sense, and I knew where book three was going because it had to set the stage for book four. That doesn’t mean that there weren’t countless changes to the original plan, but for the most part the rough outline of those stepping stones had to remain, well, carved in stone. When it comes to book four, however, all bets are off. I can do whatever I want. It is such a relief… it is also oddly terrifying.