I just finished this series. Overall it was a good read, an interesting twist on elves, humans,and other creatures.
I did find it hard to track just who was who and when things were happening with the myriad timelines.
The one thing that truly disappointed me was the introduction of JRR Tolkien into the storyline. It felt like a name drop for attention. I was in the last book, it wasn't needed and almost spoiled the entire read for me. Hence only four stars.