I just re-read this (8/15/14) and it's still awesome. I think it might be my favorite Beyond book so far! 
 Six was abused and discarded by the former leader of Sector 3. Bren has been looking after her since she first arrived. He's gets her like no one else in the O'Kane gang does. And because he gets her, he knows he can't make a move until *she* is ready. She's got to heal some and find the parts of herself she lost in Sector 3. This book is the story of what happens when Six is ready, and it's awesome! 
 For all the action that happens and the continuing story arc of the politics in Eden and the sectors, this is a low conflict story (my favorite!) about the developing relationship between Six and Bren. And, oh, is that relationship sweet and hot! 
 I'll get this out of the way right away... sex between Bren and Six is scorching. There's one particular scene that involves the two of them watching Lex, Dallas, and Rachel... I have no words. There are also a lot of scenes between just Bren and Six and I love that you can see their relationship grow with each encounter. 
 As much as I liked the sex, I think my favorite part of the book was the strength shown by all the O'Kane women, but especially Six and Lex. 
 "There was a secret in these women that went deeper than the ink around their wrists, and sometimes she thought if she watched for long enough, she could unlock it for herself." (p.8) 
 Lex has been strong throughout the series. We get to watch Six come into her own. We get to see how the O'Kanes truly value each member for the assets they bring to the gang. So when Six figures out what she wants to do, even though it's not something an O'Kane woman has done before... well, they stand behind her because they recognize it's something she would excel at. And this happens more than once! Very cool. 
 When you take this gang and it's leadership that value women on an equal level with their men, and then you add in the sexual freedom and openness... well it's just awesome! Seriously , this is a world where it's ok for a woman to want sex, and to want as much of it as she'd like. No slut shaming. It's incredible! And the writing is so strong, it's easy to believe in it. 
 Another thing I loved in this story is that when one of them goofs up and things go bad between them, they both are hurt but strong, and it's not easy for them to get back together. Because the characters feel so real, their hurts feel real and it takes some work for them to repair their relationship. 
 This is book 3 in the series, and it would be best if the books were read in order. (Start with #1, Beyond Shame.) Each book is the story of the main couple, but there are several story arcs going on, and the book will be appreciated so much more if you've read the others. 
 If I have any disappointments in this book it's that (view spoiler)[ we didn't get to see Six's induction ceremony (drinking in) and we didn't get closure with Miller yet (hide spoiler)] I hold out hope that we'll see both these things in another book, though! I'm also excited to learn more about other characters. Emma and Noah, of course, along with the whole tangle of Rachel/Cruz/Ace. There's also a stripper in Sector 3 who Six pointed out as being really intelligent. I want more of her! 
 I highly recommend this series!! 
 *Disclaimer - I was given and eARC of this book by the authors in exchange for a fair review.