In a world of darkness, Luna survives. Escaped from conspiracy that took her parents' life, she lives with two servants of her family. She's the legit heir to Relhok's throne but fighting for what it's hers doesn't pass troughs her mind. Not when she just wants to life and the world is cloaked in darkness . 
 A great cover with a not so great premise lead to a not such amazing book. 
 What doesn't work? 
 A bit everything. 
 Starting from Relhok, there's too little information. How and why the eclipse happened, from where the dark dwellers came our. And that's where it ends, because the author give too little information for the readers to speculate on. So, there's action. 
 But it's eclipsed - look at the bad joke here - for: THE ROMANCE. Romance is everywhere and I wanted to scream: nobody cares. So, basically, if you love romance with a fantasy set, this is your book. If not, just skip it. 
 So, between a fragile plot and too much romance, neither the character are that good. And so are their motivation. None of them think in high moral key, but they want to escape, to have a fresh start and only by the end of the book, their motive start to shift. 
 Bit ignoring the world that burns behind their shoulder must have a great significant. It's a choice that comprehend mind and heart, but none of this is explored deeply. 
 Like, Fowler is a little shit. No, really. He has low morals, he molest the protagonist and why do we need him? 
 Let's think about Luna, a girl who lived in a tower for seventeen years. She doesn't know the world and she's blind. 
 Think about her as alone and she can counts only on herself for surviving. It's interesting more and more than Luna and Fowler. 
 Another negative point: Luna's blindness. I'm not sure that it's well represented. Luna has no difficult of any kind. For a side is great: Luna's blind but can do anything. At the same time I don't feel that Luna running into the woods without not even stumbling a bit is believable. 
 Also, Luna's senses are incredible. She hears sound and immediately understand what they're. Is she female Daredevil? No one knows. 
 In the end: a novel with a lot of inks but not so much substance.