Rio is gifted with a unique genetic deformity. She has the ability to physically heal quickly, and her senses are heightened - handy when you're a trained killer.
She has a dark past that she is desperate to escape. Her life has been controlled by manipulative men and now she is determined to free herself. But they will continue hunting her - she belongs to them.
Cad is secretive, mysterious and insanely hot. Rio knows he is dangerous, so why is she so drawn him? What is he hiding?