The Marquess of Winterbourne has long been guided by his Rules of the Rogue, but as spy for the Crown, his next mission will break every single one. Sent to the wilds of Cornwall to beguile secrets from a lady, the last thing this rogue expects is to unearth his own buried heart. Miss Tamsyn Penrose remains far from impressed by London scoundrel Lord Winterbourne, preferring a wild gallop over the moors to sinful lips and fulsome flattery. But as danger lurks and her prejudice ebbs, she uncovers a man of contradictions, a man who awakens her forgotten fire.

Miss Maryann FitzWilliam is too witty and bookish for her own good. No gentleman of the ton will marry her, so her parents arrange for her to wed a man old enough to be her father. But Maryann is ready to use those wits to turn herself into a sinful wallflower. When the scandal sheet reports a sighting of Nicolas Ives climbing out the chamber windows of a house party, Maryann does the unthinkable. She anonymously claims that the bedchamber belonged to none other than Miss FitzWilliam, tarnishing her own reputation - and chances of the dastardly union her family secured for her. 

Alexander Westhide, the Duke of Rakecombe, has no quarrel with such faint praise as he has forever shunned marriage, women, and anything remotely resembling love. Indeed, the damning words merely serve to enhance his haughty façade. But beneath the controlled demeanor lies a duke beset by tragedy, a man turbulent and restless. Miss Aideen Quinlan can't quite explain why she feels the need to taunt, tease, and generally annoy the Duke of Rakecombe.

Timothy Mayfield has nearly given up on his search for a wife. Though he is the picture of a fine, social gentleman, Timothy wishes his finances provided a more stable foundation. Then his Uncle Elliott presents to him a solution: participate in his "marriage campaign," and upon approval of his choice for a wife, Timothy's inheritance will be his. Freed from the constraints of having to marry for money, Timothy is ready to marry for love instead....

When the tragic death of her gamester father leaves her destitute and alone, society beauty Sylvia Stafford finds work as a governess in a merchant's household in Cheapside. Isolated from the fashionable acquaintance of her youth, she resigns herself to lonely spinsterhood, until a mysterious visitor convinces her to temporarily return to her former life - and her former love.

Rhys Forester, the new duke of Claremont, lives his life by four words: Enjoy all, regret nothing. He’s devoted to the pleasure of his wild soirees, reckless behavior, and shocking the ton with his interests in trade. The debts that come with his title don’t fit the carefree lifestyle he’s created, and when he’s forced to return to his family’s estate, he’s also forced to confront his one and only regret: the beautiful girl he left behind.

Cassandra Pomfret holds strong opinions she isn’t shy about voicing. But her extremely plain speaking has caused an uproar, and her exasperated father, hoping a husband will rein her in, has ruled that her beloved sister can’t marry until Cassandra does. Now, thanks to a certain wild-living nobleman, the last shreds of Cassandra’s reputation are about to disintegrate, taking her sister’s future and her family’s good name along with them. 

When Christopher “Kit” Collins’ father dies, he is devastated, but he must swiftly take on the title of Duke of Kingsacre and all the responsibility that comes with it. Including the care of his very young, illegitimate half-sister, who is now his ward. He is very upset when he discovers the governess his father hired for the child just before his death is Sarah Carlton. Sarah is equally disturbed by the arrival of her new employer, as she and Kit once had an unpleasant encounter when she was at her lowest point. 

Lucas Vincent may be the Duke of Willowby but he’s never acted as such. He’s been too busy working for the war department as a spy. But years of dangerous work has finally caught up to him, and he was involved in a violent attack that nearly killed him. Diana Oakford was raised by a physician who served the King’s war department, and she knows better than most the dangers that job entails. She was also trained in healing, so when she’s asked to come and assist with Lucas’s recovery, she has a hard time refusing.

Matthew Cornwallis, Duke of Tyndale, once loved a woman, but she died in a tragic accident he felt responsible for. Since then, he’s been playing pretend that he isn’t broken inside, even as he’s seen as London’s most sought after bachelor. He decides to drown his sorrows at the notorious Donville Masquerade where he encounters an alluring stranger who he spends the night with.

Robert Smithton, Duke of Roseford, is known for his lusty appetites and his cold, cold heart. Still, thanks to his title and his fortune, everyone wants him, and he’s bored of it all. He wants something, but he cannot place what exactly that is. Until he meets Katherine, the Countess of Gainsworth. 

With a family legacy tainted by murder and madness, Phineas Brand, the Earl of Holstoke, is having a devil of a time securing a proper wife - or even an improper one. Society misses faint at the sight of him. Matchmaking mamas scurry to avoid him. Only one woman is bold enough to keep drawing near, and she's more scandalous than he is.

Welcome to Book One in "The Hellion Club", the nickname for the Darrow School, where miscreant noblemen send their illegitimate daughters to keep them out of sight, out of mind, and to make them employable.

Ambitious, sly, and lethally intelligent, Gideon Hawthorne has spent his life clawing his way up from the gutter. For the last 10 years, he's acted as the duke of Windemere's fixer, performing the duke's dirty work without question. Now Gideon's ready to quit the duke's service and work solely for himself. But Windermere tempts Gideon with an irresistible offer: one last task for Messalina Greycourt's hand in marriage. 

For Chloe Wherlocke, it all begins with a vision - a glimpse into the future that foretells a terrible plot against Lord Julian Kenwood and his newborn son. Chloe's psychic gift allows her to save the child from certain death, but the earl remains in grave peril. . .