4 stars! 
 Opal starts with Daemon just having gotten his brother back. 
 Dawson is not the same person everybody remembers. He's cold, doesn't smile or talk much and seems to be always thinking about something far away. Being imprisoned and hurt by the DOD, has, understandably, changed him. 
 "They'd hurt her just so I could heal her, and they could study the process. (...) Each time I felt the worst kind of fear. What if it didn't work?" 
 Dawson wants to save Beth... and eventually he starts talking about going back there on his own, and facing the DOD, to save her! 
 "...you just got back from hell. We just got you back." 
 "I'm still in hell," Dawson replied. "And if you get in my way, I will drag you down with me." 
 Daemon and Katy only get him to calm down when they agree to help, in exchange that he doesn't go there alone and waits for them to come up with a plan. 
 Enter a Little "Friend" they weren't expecting to hear about, anytime soon, and a little Blackmailing! ... and a Rescue plan is formed! 
 But, Can they trust this "Friend" to be saying the truth? or are they walking straight into a trap? Will they be able to save Beth? 
 Do Read the book to find out ;) 
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 I really enjoyed reading Opal :) 
 Daemon and Katy's relationship grows in this book... and we get to see a Lot more of Sweet Daemon 
 On the other hand... It was really sad to see Dee and Katy's friendship so broken after all that happend with Adam's death... 
 Dee is not the same girl, she's grieving, she's angry, she's lashing out and it's heartbreaking to see her like this, because we know she's not this girl... she's better than this. 
 There's new characters introduced, who we keep wondering if they are good or bad! ... and, of course... there are TWISTS ... amazing, little twists that come out of nowhere when you least expect them to come ;) 
 I'll end up by saving that the end of this book will definitely make you wanna read the next one - Origin - That I WILL READ, but not just right now.