A lot of the crazy antics and impulsive decisions (and let’s be real, some plot armor) that got Zed through the previous 9 books, the author decides not to let him get away with them in this one. He suffers real consequences and hardships because he’s now dealing with a smart, competent antagonist. I wouldn’t necessarily say he grew much as a character, but he did have to acknowledge he was outclassed and couldn’t just go his own way. He needed to work smart, and seek help.
Narration from Phil Thron was very good, and having the continuity of the same voice actor is always positive.
If you enjoyed the previous books, you will enjoy this one.