Read this back in high school. It was a banned book off and on then strictly for the cursing which wasn't smeared through the book. Just a little here and there. The story was good, for a teenager, but now looking back on what I remember it was a very dark and depressing book. I'm not a big fan of self loathing and deprecating plots without any character development.
It was the perspective of the beast from the story of Beowolf.