Why is the notorious Duke of Blackstone ruining Mary's well-laid plans to marry his brother, the handsome Viscount Wetherly? Every time she turns a corner, he is there—tantalizing her, teasing her . . . and the more she tries to ignore him, the more insistent he becomes. Mary knows she must make an advantageous marriage, but surely Blackstone is the wrong man for her. Isn't he?