Series numeration from fantasticfiction.com

"Every dashing young man in London's ton is vying for Lady Caroline Hawke's hand--except one. Handsome, delectable roué Prince Leopold of Alucia can't quite remember who Caroline is and the insult is not to be tolerated. So Caroline does what any clever, resourceful lady of means would do to make sure a prince remembers her: sees that amusingly risqué morsels about Leo's reputation are printed in a ladies' gossip gazette... all the while secretly setting her cap for the rakish royal. Someone has been painting Leo as a blackguard, but who? Socially, it could ruin him. More important, it jeopardizes his investigation into a contemptible scheme that reaches the highest levels of government in London. Now Leo needs Lady Caroline's help to regain access to society. But this charming prince is about to discover that enlisting the deceptively sweet and sexy Lady Caroline might just cost him his heart, his soul and both their reputations..."--Provided by publisher.