Darker than dark. Make sure you really want to read about these books. Thanks!
Ooo!
The Tied Man
That is one of the most twisted books I have ever read! I loved it!
Comfort Food by Kitty Thomas definitely fits in this category.
It reminds a bit of the Dark Duet series, but in it's own way it's even darker than that. It's one of those books that you will read and question how you can feel yourself so drawn to the male lead (he's definitely an anti-hero, and he doesn't have a name in the book). But this book is so well written and in my opinion it's Thomas' best book by a mile.
Here's the link to it on Amazon and I would be more than happy to loan it to someone. Just send me a message. :)
http://www.amazon.com/Comfort-Food-ebook/dp/B003DKJ9Q0/ref=sr_sp-atf_title_1_1?s=digital-text&ie=UTF8&qid=1383004497&sr=1-1&keywords=comfort+food