This book was fairly similar to Poison Study, for me. I did love Poison Study, this...not as much. 
 I did really enjoy the book, I enjoyed the characters of Avry and Belen, but the rest of the characters seemed a little flat? I was kind of strangely liking Tohon towards the end, but only because he wasn't so flat and brought some spice to the novel. The premise of this book was good, though it was a YA novel featuring characters from 20-25 years of age. There wasn't much romance, until the last 50 pages or so, which I guess was good and bad. I feel like more romance could have made the book a little more interesting, but at the same time I did enjoy the slow-burning hatred-turned-respect between Kerrick and Avry. 
 The world wasn't really that fleshed out for me, and I just found the storyline and the characters to be very similar to the ones in Poison Study. However, there were some good plot twists, (occasionally) interesting character development, and it was a fun story! I read it fairly quickly and definitely did enjoy learning about Avry and her powers, despite the book dragging at points. Whilst being unique from anything I've read from other authors, it was very much like the Poison Study trilogy. The writing was easy to follow despite being in a fantasy-type setting, and I didn't get as confused by the names and settings as I did in Poison Study, which was good. 
 I think I will be picking up the next book just to see where things go, despite the majority of the first one in this series dragging and being predictable at times.