Defying the Duke — Aileen Fish

The duke's stolen kiss has him wanting to up the ante in a game of forbidden love. When her father died, Dinah Westfall was grateful to the owners of Sutcliffe's, a scandal-rich gaming hell and pleasure palace, for allowing her to continue to work as their bookkeeper. Her sister and grandmother depend on her income, so she ignores the activities going on around her office. Until a repulsive guest assaults her. Her rescue by co-owner Jack Hill, Duke of Abingdon, comes just in time, but now Jack insists on escorting her home every night, and his hints at wanting more than a kiss are beginning to tantalize her. Worse, they're distracting her from investigating what appears to be missing money from the club's revenue. If the money has actually gone missing, and if her father is at fault, she could lose her job and her family's livelihood. She will be no man's mistress, not even a duke's, and will do what it takes to defy his propositions while solving the discrepancies in the books.