** spoiler alert ** 
 I actually went into this book not realising it was a YA book and although I have no aversion to the genre it just didn't feel like a YA book despite the youth of the characters. 
 I actually really enjoyed this - it was an original concept, almost Groundhog day but with slightly higher stakes. Sam, your stereotypical popular High School student who trashes the less popular students just because she can. It all comes to a head when she goes to the party at an old friend's house and while there helps her friends torment and humiliate a classmate. On the way home from the party, the car crashes and she dies. Instead of it being all over she wakes up on the same day and relives it all over again. 
 The book shows as Sam, over the course of a week, relives the day and veers from a 'screw it' attitude, to trying to avoid it, to finally accepting what went wrong. We see her learn things about the other characters - the friends she has and why they act the way they did, the girl they tormented until she felt she had no choice but to kill herself, the boy she ignored for years but who never gave up hoping for her to change and we see her finally come to terms with her fate. 
 This story doesn't have a happy ending, the main character isn't particularly likeable and there are certain points that you almost want to strangle her for some of the things she does, but despite it all I really enjoyed it. The idea about what you would do if you only had one day to live and you had a chance to make it right really appeals to me. Definitely worth a read.