Between the Devil and the Duke / Kelly Bowen.

"He should have thrown her out. But when club owner Alexander Lavoie catches a mysterious blonde counting cards at his vingt-et-un table, he's more intrigued than angry. He has to see more of this beauty-in his club, in his office, in his bed. But first he'll have to devise a proposition she can't turn down. Gossip said he was an assassin. Common sense told her to stay away. But Angelique Archer was desperate, and Lavoie's club offered a surefire way to make quick money-until she got caught. Instead of throwing her out though, the devil offers her a deal: come work for him. Refusing him means facing starvation, but with a man so sinfully handsome and fiercely protective, keeping things professional might prove impossible" -- provided by publisher.