Thirteen Reasons Why by Jay Asher is a great YA novel. I saw quite a few of my students reading it so decided to buy it when I was at a Barnes & Noble last week.
I love the format. It's basically a series of 13 audio tapes narrated by a junior in high school who commits suicide. She sends the tapes to the first person she blames with the instructions to pass them on to the next person on the list, etc.
But, there is another narrator. Clay Jensen is on the list and his story is interwoven with the story on the audio tapes. What results is a mysterious trip into the last few weeks of Hannah's life and the events that led her to take her own life.
The ending is perfect, too!
All teenagers should be required to read this book!