Just quickly for some reason they had a sneak peak of shadow study in my copy and I read it thinking it would be the third book in the series but I was wrong. It's a whole other series... and I'm pretty guttered on some spoilers it had given to me. 
 But anyways, ignoring the fact that I know abit of what lies ahead of my adventure into Maria's world I must say this book was AMAZING! It was equally great compared to Poison Study. I loved everything about the book. It was just amazing. 
 I loved it all. I loved seeing Janco and Ari again. I loved the relationship Yelena had with Irys. I (somewhat) loved Valek (because his character seems to have abruptly change in the last pages of Poison Study and it's stayed that way ever since). I love the introduction of Leif, Perl, Esau and the other Master Magicians.. except Rose cause she's a pain in the ass. I loved Dax, like Oh my, he's such a beautiful character. Like, he'd totally be my best friend in real life. Cahil was annoying. At first I was like "Yes... another love interest for Yelena. She'll fall inlove with him and make Valek come to his senses and be normal again" but none of that happened. 
 I would over analyse this while book and nit pick on so many things, but at the end of the day I loved and enjoyed this book and it totally deserves it's five stars