The Beast's Beauty (Beauty and the Beast #2)
I have to say I knew nothing about this book or series but just bought it for the cover. LOL. I gobbled up these two books and while it is so wrong...it was so right. I loved the mental play happening here. There is no physical torture and no penetrative rape, but there is humiliation, puppy/kitty play and just an interesting exploration into the mindset of a kidnapper and his victim...into submission and needing to become someone else in order to survive.
This series may not work for everyone but it totally worked for me.
 - R. Phoenix)