The story follows the whole family. But pretty much all the characters who are in jail have written a book about it, so you've got their perspective of it, however skewed they want you to see it. ↗
I feel 'The Night Circus' has a complete story arc in one book. I like it as a single volume. It feels complete to me, and I wouldn't want to stretch it out into something it's not. ↗
Plot is not my forte. It's like I have to live in my head in the book for a while before I figure out what the story is... My process is a bit messier. ↗