http://www.amazon.com/exec/obidos/tg/detail/-/0449911888/qid=1128282576/sr=1-2/ref=sr_1_2/104-7678277-5905543?v=glance&s=books
Damage - by Josephine Hart
One of the most disturbing and mind blowing books I've ever read. Made into a fantastic movie by Louis Malle with Jeremy Irons and Juliette Binoche.
My favorite quote from the book that I took as my own for many years:
"Damaged people are dangerous, they can live through anything."
It is a very short book actually, but with a big punch. About eight years ago I bought a copy of it in paperback. I started it passing around girlfriends, but they had to sign their name to the inside after they read it. The last I was able to track it, it had over ten names in the cover, I often wonder if it's still making the rounds and gathering names.
~Liza