Ruthless — Therese A. Kraemer

She has found the love of her life, now all she has to do is keep him alive. Shane Masters, living in America, has no idea that he's the grandson of a dying duke, the next in line to inherit the title and wealth. He's also unaware that his cousin from England framed him for murdering his bride and put out a large reward for his head. Mack Valentine, a female bounty hunter disguises herself as a young man in order to re-capture handsome, Shane from a ruthless bounty hunter.