Okay this is a big thing for me to say, but this book has the most fascinating world I have ever read (so far). It's just a brilliant idea for a plot and I was hooked to the story. 
 The two main characters are great. Kate is the type of character who is always looking for trouble and will never take no for an answer. If I honestly knew her in real life, I would be terrified of her! I'm surprised August didn't ever run away from her when he had the chance. Her mother did die so I can see that maybe she would be agitated by that and that could lead to her aggression (and I'm so sick of the parent death trope for the sake of a tragic back story, like, can it stop please?) She did have brief parts where she did get weak though which did make her so real. 
 However, I loved August even more. He is part of the rare breed of monster called Sunai and he is able to eat the souls of sinners when he plays his violin, which is epic. He is the complete opposite of Kate in that he can be super weak. And for a monster, he has a pretty soft heart. He's someone who just wants to be human and is fighting against his monster attributes. I really enjoyed his character in that he is someone I, as well as a lot of people, can relate to in the fact that he wants to be someone he's not. 
 I knew what I was getting into once I heard that this book had no romance in it. And when I heard that, I wasn't sure if I would like this book at all. But I loved it anyway! Though I think a forbidden love story between a monster and human would be so cool. Maybe the sequel will have that. ;) 
 This was one of those rare occasions with me where I couldn't put this book down. I felt like this book was pretty fast paced so that most likely was the reason why I had to keep reading. But I was just hooked on this plot! And I think Victoria Schwab wrote it in such a way that made it addicting. 
 I will be anxiously waiting for the sequel....which is too far away!