Endling is the first book in a trilogy that I have written, and many with my husband, Michael Grant, many series. Some forgettable; some not. Animorphs had roughly 63 books, I think. We had ghostwriters for part of that. And I started out as a ghostwriter myself. I wrote 17 Sweet Valley Twins and I ghosted lots of books for Disney and wrote Little Mermaid, horse books, girls who loved horses, horses who loved girls. You name it, I wrote it.
And I think what was so great about Goosebumps, and Animorphs and Babysitter’s Club, those monthly series, is that a kid got hooked, and then you could go right back and get the next story. And that’s interesting.
But I do think that series really help kids go back to a familiar place, a comfortable place. I do that. Sometimes you just gotta watch a sitcom or go back to a book you’ve read a hundred times before because you need that comfort. So characters evolve in series, but a little more slowly. Things happen a little differently.