Some readers may be unsatisfied with the open ending and the fact there are no real answers provided by the end, but the world building and characters more than make up for it. Fen is an awesome leading lady, and the fact that romance plays no part of her character arc but her platonic/familial love for others does is something that's been sorely missing in YA for a long time now.Seriously recommended for anyone looking for a well done apocalyptic sci-fi YA story.