I received this book from the author. This does not change my opinions 
 Let me start by saying that the cover and the blurb do not live up to the story. That's for sure. 
 At first, I almost put Supremacy down because I felt like the insta-love right in the first chapter was a bit too obvious and over the top. But I pressed on, and I did not regret it. 
 This book is about Kate. She is overly sheltered by her family, has a condition that makes her remember everything she ever sees or hears, is on the swim team and has two best friends who are like family. She is surprisingly open about her emotions and curious about everything. Her passion for helping out hurt animals leads her to meeting Lucas, a foreign exchange student from Spain. Most of the first part of the book is her and one of her friends, Shea, fangirling about Lucas, with her other friend, Stephen, quietly jealous of him. 
 Quite typical, right? 
 Wrong. 
 You see, in this contemporary setting, there is a sort of parallel existence - there are whole populations, Hallows, who live underground in an advanced society (I honestly kind of thought of it like Atlantis!) away from everyone's view. Hallows are divided into groups - Warriors, Scientists, Ambassadors, and Thinkers. Of course, they know that us, Surfacers, exist, but we have no idea they do. 
 Kate's family is such a strange mix - her father is an intimidating psychologist that refuses to let Kate do anything on her own. Her mother is more lenient and patient, while her brothers just seem to be fun to be around. 
 This book is one of those where the love interest is obvious, but has several road bumps. Lucas has anger management issues and flips out as soon as something doesn't go his way. And by that I mean he'll take no shame in beating people into a pulp. This often puts the characters in uncomfortable situations. 
 I don't want to say too much about the development of this book, because most of it happens in the second part. 
 This book was clearly an 'exhibition' for the rest of the series, that I can't wait to get a chance to read! 
 The ending of Supremacy came as a surprise - Although I was expecting one part of it to happen, I thought it made a great cliffhanger ending for the first installment of this series. 
 I'm giving this book a 3.75/5 feathers! Good start of what looks like an interesting series!