Quite dark and depressing...so be careful if you are not in the mood for that. No happy ending here! However, it really is must read at some point in life. It is veryyy realistic and you can definitely tell the author lived through it. I still think about it weekly to this day (i finished it over 2 years ago).
It is wonderfully written and very very hard to put down. I would recommend it to guys and girls alike - although being a female colege student and reading it has made me a lot more wary of being alone on campus at night!