The Scottish duke

the long version

"Though raised as a gentleman's daughter, Lorna Gordon is obliged to take a position as an upstairs maid at Blackhall Castle when her father dies. Alex Russell, the Duke of Kinross, is the most tempting man she's ever seen-- and completely unattainable-- until, at a fancy dress ball, Lorna disguises herself as Marie Antoinette and pursues an illicit tryst... with scandalous consequences. Months after his mysterious seductress disappears, Alex encounters her again. Far from the schemer the distrustful duke assumed her to be, Lorna is fiercly independent and resoureful. She's the one woman capable of piercing his defenses. But when danger threatens Lorna, Alex must prove himself not just the lover of her fantasies, but the man who will fight to protect her." --