3.5 stars.

I didn't really like it,but I felt compelled to keep going
The quick changes from Hannah's tape to Clay's thoughts really threw me at first. That's not the style I am used to reading and it was difficult for my brain to determine who was talking at first. I had to read several passages over and over to get it straight.

About half way through the book I was finally able to settle into the groove.

I do believe that the book is good at is portraying how difficult it is to pinpoint if someone is suicidal or not. In hind sight, several characters felt they should have seen the signs. Humans are such a unique breed and our minds are so complex. It's difficult to discern anger from hurt, introversion from depression. Add into that the ever changing hormones in teens. A single instance/conversation would not be enough to pinpoint destructive behavior

I find it slightly implausible that Hannah was in a depressed enough state to consider her own death to plan the creation of and delivery of the tapes, then go to school before taking her own life. The actions seem a bit to premeditated. Doing these actions require motivation and drive. I don't think that is typically seen in someone about to take their life. I was always under the notion that a suicidal person often has a plan on how to take their own life, but the final action is one done when despondent, not necessarily planned to a specific day or time. But I am not a psychologist, so I could be wrong.