This was an epic story that had me deeply invested in the characters. Following Bryce as she searches for answers while working through grief is full of ups and downs and twists all throughout.  The world SJM has created was incredible, beautiful, and terrifying. I had attempted the audiobook twice, but it was too confusing with all the world building language. It was easier with the physical copy, just very dense. The first 200 pages I just read for shorter stints to learn all the terms, but I was already enjoying it before it really took off.