It was... okay. I'd originally picked it up because of the blurb on the back cover, having known nothing at all about it or the author otherwise. But the zombie mythos here was very different, and that intrigued me. And it continued to keep me interested throughout the novel. 
 But overall, I feel that this left a lot of things unfinished. Sure, we tied up all the plotlines, but some of them were done so quickly and so haphazardly that I never got the feeling of resolution. The ending for example had no denouement to speak of. It was CLIMAX and then it's over. Yuck. Disappointing. 
 That and I felt that a lot of the interesting societal stuff was skimmed over and then swept under the rug. I would've liked to learn more about... well, lots of things. 
 And Cass... I felt at times that the author was trying too hard with her. Especially with all the problems in her capital p Past. Eyeroll. 
 Anyways, an interesting premise and some good rudimentary worldbuilding, but ultimately, it fell short.