** spoiler alert ** 
 This story starts out strong but I felt that ultimately Knoll told a story that was a bit too complicated for the length of this book. 
 If you're going to tell the story of a school shooting that is as complicated as the Columbine massacre (and Knoll thanks Dave Cullen in her acknowledgements), then it deserves a bigger piece of your story. But Knoll includes it among other plot points and it doesn't get the time and space that a conflict of that magnitude really deserves. 
 And there were too many smaller pieces of Ani's story that were left untouched. I wanted this to be more focused to get a stronger sense of her change from beginning to end. It just wasn't strong enough for me. 
 Knoll is a strong writer, though, and this is definitely a page turner. I compared her to Megan Abbott and Liane Moriarty as I read, and those are authors I really like, so that's a good thing.