2.5 ish? (For the audiobook) 
 This was incredibly mediocre. The concept was intriguing, but the world-building was effectively non-existent. I did think the romance was pretty enjoyable (if you don't like romance, you'll hate this book, because it's the strongest part of the story). The writing is well-paced and the action scenes are well written. It's pretty gross and violent, which is not really my thing, but I do appreciate that Tintera didn't sanitize that aspect, as is common in this sort of YA novel. The audio is narrated by Khristine Hvam, who is really fantastic, which is why I got this from the library's digital collection and why I finished. She actually really improves this story, giving the main character more personality than the actual text belies. I'm guessing that if I'd read this as opposed to listening, I would not have bothered to finish.