I'm still trying to decide if I can live with that ending and how it changes my understanding of the entire book. I know I'll be thinking about the issue for quite a while. That said, I still feel that this is a powerful, don't-miss book. 
 This book left me reeling, in ways I didn't even imagine. Everything, Everything is the story of Maddy, a teen girl with the rare immune disease SCID who's lived her entire life in the hyper-protected, safe environment of her completely sterilized and filtered home. She never goes out, never sees anyone in person except her mother and her nurse, spends her time attending school via Skype and reading tons of books. And then one day, Olly and his family move next door, and Maddy's world is rocked. What if she could make a friend? What if she did want something besides what she has? From waving window to window to email and IM chats, Maddy and Olly become friends, and then more, until Maddy feels ready to risk everything, even her life, to really take a chance at living. 
 I thought I knew what to expect, more or less, when I started this book, but I was wrong. First of all, the narrative voice is completely charming. Told in the first person by Maddy, the narrative strikes the exactly right chord of cleverness, humor, and curiosity tinged with innocence. Maddy has literally done nothing and been nowhere, so everything she sees and experiences is a first for her. The author captures the wonder of all of Maddy's firsts, as well as the suffocation of being alive without really living her own life. While the Maddy/Olly romance develops quickly, it's not insta-love. They get to know each other as people first. Each has baggage and fears, but they find a way to connect that's touching and feels real and deserved. 
 The ending (or, the last 20%, according to my Kindle) absolutely threw me for a loop and was not what I expected at all. I'm sure readers will have some heated debates about how things turn out, and I have a feeling this will be a love it or hate it situation -- but either way, there's plenty to discuss! 
 Throughout the book, I thought the writing was terrific, and I loved the little drawings and diagrams that enliven Maddy's story, as well as all the email exchanges, messages drawn on windows, and other whimsical visual touches. Maddy is a smart and funny character, and I loved seeing her think about her life, her family, and her future. This book pulls off the tricky task of piling on the emotional impact while keeping a sense of quirkiness and laughter. Everything, Everything is a book that should really appeal to teen readers, and adults will love it too!