After a string of disappointing courtships, Miss Priscilla Bliss had all but resigned herself to spinsterhood until Lord Joseph Stuart swept her off her feet in a love match that titillated the ton. Though their love burns bright, Priscilla cannot ignore her husband's enigmatic behavior. Convinced that Joseph is concealing something from her, she decides to follow him to uncover his secrets.

Balthazar and his siblings are living the good life in the utopian community of Canoga, New York, where they have a degree of sexual and intellectual freedom few men—and even fewer women—have ever known. But sadly, all good things must come to an end. When their father dies, the Hale siblings discover two disheartening truths. First, they have an older brother none of them knew existed. Second, this stranger is not only the heir to an English dukedom, he's also their new legal guardian.

Adored. Cherished. Pampered. Lady Delilah Darling lives an enviable life. But when cruel hands drive her away from home and into the dangerous streets of London, she's suddenly frightened, vulnerable, and alone. Desperate for safety, Lady Delilah stumbles right into the arms of Henry Gaunt, the irresistible overlord of the London Underground.

In the service of England's spymaster (well, his niece, but surely he'll appreciate the help), Miss Mary Wilson is on a mission to uncover a treasonous plot. Though her only clue leads to the debaucherous secret society of the marquess of Hartford, a lifetime of being overlooked should ensure her access to all of the gossip her assignment will require. There's just one problem: Mary is due to find a husband this season, and her aunt Elizabeth, the Viscountess Hood, is determined to see her niece shine bright.

Spirited debutante Lady Olivia McLeod, cherished daughter of the Duke and Duchess of Strathaven, has two interests: solving mysteries and winning the love of her rescuer and secret crush, the infamous Duke of Hadleigh. When Livy joins Lady Charlotte Fayne's charity for young ladies and discovers that it is a front for a covert investigative agency, she is thrilled. Livy dedicates herself to solving a deadly case. Little does she realize that the path to danger will also lead to her heart's deepest desire.