Although hyped as on par with A Song of Ice and Fire and The Hunger Games, I found this book lacking in most of the areas that make those two series stand out, and ultimately I chose not to finish reading it (I stopped at 110/352 pages). 
 The worldbuilding is thin, with little indication of when we are; it appears to be a blend of fantasy medieval and slightly futuristic sci-fi. Early on, when all that was evident was fantasy medieval, I was deeply confused by the Japanese-Scottish character. Only when it became evident that this isn't set in the Middle Ages did that make more sense, though I still didn't know when we actually were. Likewise, I still don't know what exactly a Seeker is, or is supposed to be. Quin has grand expectations, and the reality is horrifyingly different, but without some idea of what she expects, the "reveal" that she's actually a murderer-for-hire lacks punch. 
 "Reveal" above is in quotes because we don't see what happens. There's a skip in the narrative, and Dayton doesn't show us (and hadn't as of almost halfway through the book) what exactly happened. The lack of immediacy for that scene takes away even more punch, and this is early enough on that the book can't afford to not have punch. 
 Characterization is likewise weak, and I felt that there were too many POV characters. I assume that seeing through the eyes of each character Dayton wrote becomes important at some point, but I didn't have the interest to get there. I didn't care about any of the main three characters, and the only one I did care about kept getting slapped around by her brother, so no, thanks. The love triangle is told, not shown, and is a bit creepy considering that Quin and Shinobu are family (not close family, but close enough). Also, Shinobu's interest in Quin comes up several chapters after Quin and John are established as a serious couple, which made it feel like the triangle was shoehorned in for the sake of having a triangle, not because the characters would organically feel that way about each other. 
 The plot is choppy, with scenes skipping not just major events, but also any kind of transition to help us understand what's actually happening in this world and why these kids are so important to it.