Bargain with the Beast by April Andrews
When Tobias Thorn sees a hooded figure abducting a young girl, he doesn’t think twice before racing to the girl’s rescue. Only he isn’t quite quick enough...because the next thing Tobias knows he’s waking up in a cavernous room, his hands and wrists bound to an equally cavernous bed, with his chances of escape looking pretty damn slim.
But Tobias is not a man to take things lying down. He’s going to find his way back home no matter what it takes! But then he meets his abductor and realizes things aren’t quite that simple. Tobias has entered a world unlike anything he has ever known before. If he wants his freedom, there is only one way he is going to get it, by making a bargain with the Beast...