Heartfire by Orson Scott Card

This book shows Alvin's adventures with the witchers in New England juxtaposed with Peggy's work against slavery in the Crown Colonies. I enjoyed seeing more historical figures appear (including Denmark Vesey, John Adams, Honoré Balzac, and John-Jacques Audubon) and all the thoughtfulness about how to deal with unjust laws. There was a good mixture of humor and determination in the book. I was also intrigued by Adams's reflections on his relationship with Thomas Jefferson (who only appears in other characters' thoughts). I felt like this book gets the series back on track.