** spoiler alert ** 
 After reading the previous book in the Study series, I have to admit that I was a little leery of this one. The previous book had Yalena turning into a Mary Sue-esque character where she was always right & always had the right answer to just about everything. This book does improve slightly on that, but unfortunately there's also quite a few things in this book that just mar what could've been a fine ending to the series. 
 This book finds Yalena on the run from just about everyone in Sitia as her powers as a Soulfinder are discovered. Fearful of Soulfinders due to past events in history, Yalena was initially mistrusted but is eventually thought of as a traitor due to her past history with Ixia. 
 I did like this book but there were a few things that I just wasn't overly happy with. I did like that Yalena was making mistakes (finally!) & that her stubborn "I can do it all" attitude was tripping her up. In the previous book Yalena's near flawless, so it's nice to see her finally start to mess up some. (Makes her more believable.) 
 However there were still points in the book where I wondered why others weren't utilized more. There's several points in the book where Leif's magical ability to detect lies could've & SHOULD'VE been utilized, but it wasn't. It was almost as if the author herself had forgotten that Leif posessed that talent. There was one scene where people turned to Yalena to ask if a character was lying & I couldn't help but ask why they weren't turning to ask Leif because like I said- that's one talent that he does have. 
 The other thing that tended to irk me was that there was SO much happening in the book but there really wasn't enough book time given to either. The stuff in the book could've been stretched out to two books, to be honest & I can't help but wonder if the author was trying to squash as much as possible into one book so she could move on to writing the Glass series & have a bit of a semi-fresh start. 
 As it is, I did enjoy the book overall & I would recommend it to people, but held up to the wonderful Poison Study, I can't help but think that the author could've resolved this trilogy better before moving the plot along in the Glass saga.