Lord of Sin — Madeline Hunter

When carefree rake Ewan McLean inherits an earldom, his plans for his new fortune are entirely in keeping with his lifestyle: to expand his collection of erotic art and expensive mistresses. That is, until he becomes acquainted with his most intriguing new responsibility. . .

Bride Cameron is beautiful, unmarried, and sole caretaker of her three younger sisters. Now it's Ewan's duty to see that she is provided for. But to his amazement, the last thing the fiery lass wants is Ewan's help. The simplest thing would be to walk away. But Bride, with her sparkling gaze and fierce wit, is the most bewitching woman Ewan has ever met. And he intends to have her -- and to learn how she has managed to survive on her own. Even if he has to employ all the arts of seduction for which he is notorious. . .