Clay Jensen returns home from school to find a package with his name on it, and with no return address, on his front porch. There are several cassette tapes inside recorded by Hannah Baker - his classmate and crush. Hannah committed suicide two weeks earlier. As he listens to the tapes, he learns that there are thirteen reasons why she decided to end her life. And that he is one of the reasons.
This was interesting - it's told from Clay's perspective but as he listens to the tapes Hannah's story is interwoven with his thoughts, memories and what he's doing at that particular moment. I think this format made the book hard to put down. I did sympathize with Hannah. She gives us all the reasons that keep adding up, leading to her decision - things she may have been able to stop, things that other people may have been able to stop, how some teenagers can be so cruel and thoughtless.