"Nightbane" is the second book of the Lightlark series, and it is much better than the first one. The plot progressed more, and the characters were better understood.

However, it should be noted that this is not a typical Young Adult book. It leans more on the mature side, so if you're looking for a clean romance, this one will not do the trick.

Other than that, the romance was interesting, and there were many moments between the leads that I enjoyed. However, at some point, I got tired of the sexual yearning. 

But, this one gave a better insight of the past and the characters, so it was an improvement from the first book.