I don't even rememeber requesting Poison Study. It just showed up from PaperBackSwap and I had no idea what it was even about. I'd put off reading it because I had other books I was just aching to read but finally gave this book a chance. Boy am I glad I did. 
 It always seems that the description can't really convey what the story is acutally about. The back of this book (description) tells you the gist of the story but there is so much more in the way of friends and enemies that you just marvel at as you read this book. 
 Yelena lives in a world were any killing is murder. It doesn't matter if you were defending yourself or trying to save the lives of you family. If you kill, you will be killed (I think a harsh extreme to what some people believe pro-death penalty people believe). You come to learn the reasons behind the death of the man Yelena killed while getting to know Yelena as a character. She is fascinating and I think will grow much more, as there are 2 more books I'm currently searching out, as her story continues. 
 There are some wonderful supporting and leading characters. Valek is the head of security and while you get the impression he is hard and deadly, you start to suspect he has a fondness for Yelena. Then there is Rand the cook. Very nice man but does he have a secret. Then the solider twins (?) Ari and Jancho. I think I really love them as they kind of take Yelena under their wings and treat her like a little sister they want to protect. 
 The story was so great I could hardly put down the book and I can't wait until I get my hands on Magic Study and Fire Study.