Gone to See the River Man

Disturbing and extremely messed up, this book is extreme horror. I do not recommend it to anyone with a weak stomach, and anyone who is not able to handle messed up topics, however, it did have me hooked.
Gone to See the River Man, is a book written from the perspective of one of the most messed up, screwed-up protagonists I've ever read (though I do not read this genre of extreme horror particularly often, so I cannot vouch if this is a more extreme example for this genre). The protagonist has a disabled sister that she does awful things to, and a brother that she directly caused the death of. She is disgusting, and vile, but THAT is what hooks you in.
I will warn you before you read this book, I felt like I was going to throw up almost the entire time I was reading it. It is not for the faint of heart, and I don't think I will be reading anything like it particularly soon.