One kiss should not make a lady forget every other gentleman in London.

Lady Isabella Fairleigh only meant to discover what all the fuss was about. Surely a kiss from someone she trusts would cure her curiosity and prepare her for a perfectly respectable courtship. Choosing her best friend's older brother was perhaps unwise.

Marcus Hawthorne, Duke of Wraithmore, has spent years keeping temptation at a comfortable distance. Helping Isabella navigate the marriage mart seems harmless enough?until she asks for a lesson he has no business giving. He ought to refuse. Instead, he kisses her.

Now Isabella cannot stop thinking about the one gentleman who insists they must forget it happened. Determined to protect her heart, she turns her attention to a suitor willing to court her openly. But Marcus proves far better at provoking her longing than stepping aside.

As stolen moments give way to dangerous hopes, Isabella refuses to become the duke's secret indulgence. She wants a love worth claiming and Marcus must decide whether to let her marry another man, or admit that one reckless kiss was never going to be enough.