Books like Misty Mornings, Magic Nights / Ada Steward by Ada Steward

Two loves—as different as day and night... Beautiful young heiress Elinor Fielding was an orphan and afraid when she came to Mordyn Castle on the wild and windswept Cornish coast. But the warm welcome of her father's old friend, Sir Robert Grenville, made her feel at home. And the warmth in the gaze of his handsome son, Jonathan, made her feel not only wanted but passionately desired. There was someone else who desired her as well. A man of mystery who entered her locked room like a ghost yet was made of all too solid flesh and fiery blood. A dreamlike lover to whom she surrendered her body and soul as he filled endless night after night with midnight magic.

Lithe, honey-haired Townsend Grey was at home on England's fog-enshrouded fen—until she came face to face with Ian Moncrieff, a towering half-French, half-Scottish nobleman. With his taunting words and piercing blue eyes, he made her his own. Man and wife, they re-turned to France still wrapped in the heat of their first touch. But for Townsend it was a journey into doubt. Had Ian married her for love, or the French chateau that came as her dowry? In Paris a revolution was swirling around Versailles, and games of sensual intrigue, dangerous liaisons! and explosive flirtations threatened to tear them apart. Was the man whose powerful arms had claimed her back in England just another arrogant, decadent member of the French court? And now, as she dared to make a clean start far from pampered aristocrats, how would she live without his tantalizing

After the loss of her conscience, Becket finds joy in the nightmare landscape of Philadelphia after dark, but with every night, she sinks ever deeper into the night magic's grasp.