A widow with secrets When the dangerous men who killed her husband in a political assassination threaten Ara, Duchess of Burghly, the Crown assigns her a bodyguard. But the man charged with protecting her is no stranger. He's Clayton Ludlow, the bastard son of a duke and the first man she ever loved. Eight years after he took her innocence and ruthlessly abandoned her, he's back in her drawing room and her life. This time, she's older, wiser, and stronger. She will resist him at any cost and make him pay for the past. A spy with a broken heart She's the only woman Clay ever loved and the one he hates above all others. When Ara brutally betrayed and deceived him, leaving him with a scarred face and a bitter heart, he devoted himself to earning his reputation as one of the Crown's most feared agents. He wants nothing more than to finish his assignment so that he can remove all traces of her from his life forever. But walking away from her for good won't be as easy as he thinks. As secrets are revealed and danger threatens Ara, Clay discovers that the truth is far more complicated than deceit. Once she's back in his arms where she belongs, he'll wage the biggest fight of all to keep her there.

He's a heartless cad. A relentless rake. Dangerous to know. As cruel as can be. He's the Duke of Carlisle, leader of a secret branch of the Home Office charged with keeping the peace amidst great peril and upheaval. By day, he hunts anarchists and murderers with savage intensity. By night, he rules over London's darkest, most depraved souls. But he's about to meet his match in his latest prisoner. She's a strong, independent woman. Fearless and determined. Unlike any lady he's ever known. As unfettered and plucky as can be. She's Bridget O'Malley, a trusted member of the underground organization to gain Irish independence. By day, she is a respectable young woman of modest means, attempting to make her way in the world through honest employment. By night, she is embroiled in a world so treacherous and dangerous that even she finds her own life at risk. To save herself, she will commit any sin. When the heartless duke and the fiery rebel clash in a fierce battle of wills, unexpected passions flare to life. Threats lurk at every turn, and no one is as they seem. Will they be each other's ruin? Or is love enough to become their salvation?

He’s lethal and ruthless. Suspended from his work as an agent for the Crown, Griffin, Duke of Strathmore, exists under a dark cloud of suspicion for crimes he didn’t commit. He’s on a desperate race to clear his name by any means until a grave error lands him under house arrest with the last sort of distraction he needs. She’s the sister of his nemesis. Lady Violet West is about to be married to the most boring man in England. When the disgraced Duke of Strathmore lands in her lap—literally—she decides he is the answer to her longing for adventure. Though her brother is convinced of Strathmore’s guilt, Violet isn’t as certain. Falling in love is out of the question. Griffin doesn’t want her interference. Violet won’t take no for an answer. So begins a secret partnership between the fallen duke and the determined lady. Their quest to uncover the truth leads to danger and desire. But the most perilous risk of all is losing their hearts.

Lucien, Duke of Arden, is on the brink of disaster, about to lose everything he worked so hard to attain as the leader of the Special League. When Home Office obliges him to join forces with a Pinkerton agent to keep his position, he is determined to send the fellow back to American shores faster than he can say “Yankee Doodle.” There’s just one small problem with his flawless plan to undermine the unwanted agent… Hazel Montgomery has spent the last ten years as a Pinkerton detective, fighting to be treated as an equal to her male counterparts, and the list of her successful cases is as long as the Mississippi River. She is not about to allow a supercilious duke to condescend to her. If Arden does not want her assistance, he can take his arrogance and go back to his fancy drawing room where he belongs. Their clash is as instant as it is inevitable. When a fresh wave of bombings hits London and the danger intensifies, Lucien and Hazel must work together to bring a new ring of Fenians to justice. The more time they spend in each other’s company, the more the underlying attraction between them sizzles, until it bursts into uncontrollable flames. Haunted by past tragedy, Lucien vowed long ago never to fall in love. Hazel’s sole rule in life is to trust no one. But soon, the cold duke and the bold American find themselves locked in a battle for the greatest prize of all, each other’s hearts.

Felix Markham, Duke of Winchelsea, has devoted his life to being the perfect statesman and raising his daughter after his beloved wife’s death. But when devastating bombings on the railway leave London in an uproar, he is determined to bring the mastermind of the attacks to justice. He will lure the fox from his den by any means. In her youth, Johanna McKenna donned a French accent and stage name to escape the clutches of her violent father and became the darling of the New York City stage as Rose Beaumont. Her past comes calling when her brother’s reappearance in her life leads her into a dangerous web of deceit. She finds herself hopelessly trapped until she receives an offer she cannot refuse from London’s most famous theater. Felix’s plan is clear: bring the famed Rose of New York to London, secure her as his mistress, and drive his quarry to English shores. But the more time he spends in Johanna’s company, the more he realizes nothing is as it seems, least of all the woman who feels as if she were made to be in his arms. When he finally learns the truth, it may be too late to save both his city and the enigmatic lady who has stolen his heart.

Miss Isabella Hilgrove, proprietress of the Ladies’ Typewriting School, prides herself on the quality of her staff. After the Duke of Westmorland sacks the third typist she has sent him in as many days, she’s not just outraged, she’s determined to put the arrogant bully in his place. Benedict Manning, Duke of Westmorland, is having the worst week of his life. A bomb has exploded on London Bridge, the Special League is unraveling, and he cannot seem to find a secretary who is not a spineless watering pot. When the prim and proper Miss Hilgrove arrives on his doorstep, calling him everything but a gentleman, he can’t resist toying with her. Their mutual attempts to teach each other a lesson quickly turn into something more. But danger is in the air, and the brooding duke and the self-avowed spinster are about to become targets of the most lethal menace London has faced…