The sisters had always shared everything, including their birth. As identical twins, they had never before kept secrets from each other. Not, that is, until the day Louisa wed. Her husband, Lord Edward Wintercrest, wasn't the secret Louisa was terrified would be revealed. It was obvious to all who knew the couple that their marriage was one of deep abiding love for one another. What wasn't obvious was the lifestyle the new bride was being trained to assume.

Louisa and Lucille are becoming accustomed to life in Wintercrest Manor. Lucy has discovered that her sister is quite content living her life with her strict husband, Lord Edward. Lucy begins her own journey of self-discovery when Lord Edward, her guardian, agrees that she may be courted. Though he has serious doubts about the man, Edward decides to allow Lucy's former mathematics professor, Charles Lloyds, a chance to prove his worth.

Sir Gerald is having great difficulties with Caroline, his 18-year-old ward. He has always shielded young Caroline from the truth about the differences between men and women. Now Caroline has become much too curious for her own good, to the point where he must bring himself to punish her for hiding in closets in attempts to witness the pleasures he takes with his mistress. At his wit's end, Sir Gerald calls upon Dr. Reginald Brown and Dr. James Fairleigh. Caroline's wide-eyed innocence stirs Dr. Fairleigh far more than he thought possible.

As an 18-year-old living in a world where technology has allowed for near immortality and eternal youth, Sarah is used to being seen as a child by those around her, but what really makes her unique is not her age. What sets Sarah apart is the fact that, despite the institution of marriage having been abandoned millennia ago, she cannot help longing for a husband who will not hesitate to take her over his knee for a sound spanking when he feels it necessary.

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.