Gayle Windham, earl of Westhaven, is the first legitimate son and heir to the duke of Moreland. To escape his father's inexorable pressure to marry, he decides to spend the summer at his townhouse in London, where he finds himself intrigued by the secretive ways of his beautiful housekeeper. Anna Seaton is a beautiful, talented, educated woman, which is why it is so puzzling to Gayle Windham that she works as his housekeeper.

They call him the Duke of Murder...The gossips whisper that the new Duke of Murdoch is a brute, a murderer, and even worse - a Scot. They say he should never be trusted alone with a woman. But Megan Windham sees in Hamish something different, someone different. No one was fiercer at war than Hamish MacHugh, though now the soldier faces a whole new battlefield: A London season. To make his sisters happy, he'll take on any challenge - even letting their friend Miss Windham teach him to waltz.

Thomas Jennings arrives to his newly acquired estate to find that his steward has fled under a cloud of scandal, and the property has been held together by Miss Loris Tanner, the steward's daughter. Thomas knows what it's like to not fit in, and he's pragmatic enough to respect results, so he gives Loris a chance to maintain her position in a profession uniformly undertaken by men.

Wealthy wool magnate Tremaine St. Michael is half French, half Scottish, and all business. He prowls the world in search of more profits, rarely settling in one place for long. When he meets practical, reserved Lady Nita Haddonfield, he sees an opportunity to mix business with pleasure by making the lady his own. Nita Haddonfield has a meaningful life tending to others, though nobody is dedicated to caring for Nita.

Lady Violet Belmaine emerges from two years of mourning less than enthusiastic about resuming her place in Polite Society. She’s talked into attending a country house party by her French physician friend, Hugh St. Sevier, only to find that the house party guests are preyed upon by a mysterious thief.