3.5 stars I think. 
 I couldn't really get my head around the world. It felt a little bit underdeveloped, while at the same time I felt overwhelmed with factual information. I did generally enjoy the book, and honestly couldn't put it down. After the first couple of chapters, there is action and suspense at every turn which surprised me. I did underestimate the strength of the plot. I feel like this could only get better with the sequel and novellas coming out 
 Cal, Mavern and Kilorn were the best characters in this book for me. I didn't take to Mare really. 
 Also, there were a lot of similarities with other YA novels, to the point where the basis for this novel often felt unoriginal. Shatter Me and Hunger Games are two that come to mind straight away. However, I loved the Grecian aspect to the setting, except... electricity..? Doesn't really make sense, but I'll go with it. 
 (view spoiler)[ dear maven. i'm not angry, i'm just disappointed. (hide spoiler)]