I was not a huge fan of this book. It was okay. I just wasn't that into the going back in the past thing. I think this could've been a novella. Not sure how it affects the overall story arc of the series. The words "filler book" come to mind.
As for the narration, I'm not sure what I think. The narrator talked really slow, which I know that is supposed to be the Southern thing, but I've never heard anyone talk this slow. It got better when I sped up the audio. I might try again with the next book and see what I think with a better story.