The Lady in the Collar. The Scottish Lady, #2

Alanna Ferguson had led a quiet life in her grandfather's Castle in northern Scotland until brash American Nathan Hunter arrived to explore for oil. He had taken advantage of the dark fantasies she'd had about the castle dungeons to sweep her off her feet - literally! Now he set out to thrill and shock her by setting up a series of wild, wicked encounters in the old, musty and often abandoned halls and towers of the castle, encounters which would require her to submit to his wicked ways and make her mind burn with a feverish heat she had never known.
She soon lost track of what was real and what was fantasy, and then she found herself kneeling before two masters!