An impulsive kiss between a libertine duke and a mysterious governess sparks a blaze of desire—and intrigue—in this breathtaking Regency romance from the award-winning author of Spy Fall.

Adam Fairfax, the Duke of Sunderford, happily enjoys a different woman (or two) every night—or he did, until his wards landed on his doorstep. Ever since Sunny took in the seven-year-old twin girls and their prim and proper governess, Isabel Finch, his love life has been a shambles. But, as time goes by, Sunny catches himself getting lost in Isabel’s haughty blue eyes, or following the curves beneath her unbecoming dress. An unexpected kiss ignites a passion that shocks him into realizing how thin the line between love and hate can be.

If Isabel’s hidden past were revealed, she could lose everything. Oddly enough, only when “Sinful Sunny” is near does she feel safe—or safe enough to speak up in defense of the girls. The duke’s decadent lifestyle is a disgrace, and clearly he considers Isabel a nuisance. Still, she can’t help admiring his sculpted cheekbones, strong-cut jaw, and tousled chestnut hair. When their lips meet, it’s almost as if he could kiss the secrets right out of her. Worse, she’s tempted to let him. . . .