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I wavered between 3 and 4 stars. For Character depth, interaction and familial relationships, this book gets 4 stars at least. That part of it (which I assume is the main point) was stellar. The world building started out GREAT and I was intrigued, but as I read the end and realized that a LOT of questions are completely unanswered, or only vaguely answered...is the reason for the 3 stars. With a little more care and attention to the world these people inhabit, this could have been a 5 star book easily! Good stuff though. Will read more from Howey.