Who ever hasn't picked this book up based on it being by Stephenie Meyers and her reputation from Twilight PICK IT UP and those who enjoyed Twilight pick it up as well. 
 I love this book! 2 great main characters and by 2 main characters I mean Wanderer and Melanie, I loved there hate, banter, and eventual friendship! 
 Wanderer is just doing what is in her nature taking over bodies! she has never been in one as complicated as a human before and is stuck with the human occupant as well which is Melanie! Wanda is good natured and has great character development, turning into a brave and independent human/host/alien/soul/thingmabob. 
 Melanie is stubborn and loyal, choosing death over betrayal of her loved ones and keeping them safe from her new self as well as caring for them the best way she knows how. 
 Together Wanda starts feeling the love Melanie does for her younger brother and Boyfriend, this leads to some great scenes and eventually Wanda finds her own love for both Melanie and her brother. 
 Now to the romance in this book, yes there is a kind of love triangle in this but it is more like a complicated square and the jealousy is great, I know that sound weird but I liked the conflict it caused and genuinely liked how well developed all the characters are. 
 I didn't expect a sequel of this so I loved it as a stand alone book but now I see there is one planned I want it!! although there has been a long time between books I'm still hopeful it will be great.