Basically, I love this. I think the world building was brilliantly done. I could practically feel Mare's awe when she was wandering around in the Silver's city. The contrast between the Stilts and the Palace was great. I think my favourite part of the world created is how the Silvers use their abilities to manipulate buildings and entertain but as Mare said that's all they have. 
 Mare is wonderfully cynical, sharp tongued and sassy. She doesn't care that the King is talking to her and will say whats on her mind. Though I find her somewhat in decisive and a bad judge of character (You'll see what I mean when you read this.) I adore Cal. Such a fiery bloke, pun intended. The difference between him and Maven is brilliant. Really shows what beings in the spotlight is really like. 
 Then Queen however, her I'm not particularly fond of, but I suppose you're not meant to be fond of her. 
 I shan't reveal what the twist(s) are in this novel but they are marvellously dramatic and have me dying to read the next novel.