How has nobody mentioned 'Books of Blood' by Clive Barker? Okay, for a teen, this is a STRONG maybe, and only for a very mature one. The imagery and themes are intense, graphic, and visionary. It's body horror and dark fantasy of the highest order. I wouldn't blanket recommend it, but for a teen already seeking out extreme horror movies and wanting the literary equivalent, this is the pinnacle. Parental guidance strongly suggested, but it's a masterpiece.