Heartsick by Chelsea Cain

He can't forget the woman who kidnapped him. For ten days, she tortured him to the brink of death, then mysteriously set him free and turned herself in.

Now two years later, he's addicted to pain pills, estranged from his family, and obsessed with her.

Gretchen Lowell. She's beautiful. She's brilliant. She's a killer...And she still controls Detective Archie Sheridan-even from behind bars.

As Archie trails a new case, he needs Gretechen now in more ways than one - to catch a killer and to release his soul.

Wow, this was one twisted and sadistic book and I loved it. It was interesting to read about a female serial killer, that's not something that you see often, and it was so intriguing to see how she could just draw people in, and read them so well. Definitely a thriller with some crazy stuff going on, but a really great book. I liked the perspective from Archie as well, about how he felt about this woman who tortured him with a smile on her face. It was just a crazy and twisted book, and I can't wait to read the next one!!!!! 4/5