I've often thought about writing a novel that includes every character from all my books. I've written 17 novels and stories to date, so I definitely have a lot to chose from. Sort of like writing my own fan fiction? Weird and wonderful. Also, I will put myself into my book. So a novel where the author gets sucked in by the irritated will-power of the very characters she's created! Now that's diabolical. Just think what put-upon characters would do in such a situation. What would you do if you discovered that your life was controlled by a higher power. By someone literally writing out what you thought were your own choices, or bombarding you with tragedy. Dang. At least I've always given my characters happy endings. Haven't I?