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.

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.

As the eldest son of the Duke of Langford, Nathaniel Gresham sees his arranged marriage to Lady Violet Devere as just another obligation to fulfil – highly suitable, if unexciting. But as Violet sets out to transform herself from dowdy wallflower to dazzling young duchess-to-be, proper Nathaniel sets out to prove he's a match for his new bride's vivacity and daring.

England, 1920. Eleanor Swift has spent the last few years travelling the world: taking tea in China, tasting alligators in Peru, escaping bandits in Persia and she has just arrived in England after a chaotic 45-day flight from South Africa. Chipstone is about the sleepiest town you could have the misfortune to meet. But then, from the edge of a quarry, through the driving rain, Eleanor is shocked to see a man shot and killed in the distance. Before she can climb down to the spot, the villain is gone and the body has vanished.

As a child, Devlin Ware thought his family stood for all that was right and good in the world. They were kind, gracious, and shared the beauty of Ravenwood, their grand country estate, by hosting lavish parties for the entire countryside. But at 22, he discovered his whole world was an elaborate illusion, and when Devlin publicly called his family to account for it, he was exiled as a traitor. So be it. He enlisted in the fight against Napoleon and didn't look back for six years. But now his father is dead, the Ware family is broken, and as the heir he is being called home.

A murdered opera singer. A duke drenched in her blood. For Bow Street Officer Hugh Marsden, the brutal killing is a straightforward case. Ever since his exile from polite society, the chance to arrest a high and mighty peer of the realm has never presented itself. Hugh won't snub the opportunity now. But Audrey Sinclair, the Duchess of Fournier, is certain her husband is wrongly accused, and she's determined to prove it to the arrogant Bow Street officer, even if she must employ her most peculiar ability—or perhaps curse—to guide her investigation. After all, a duchess can do as she pleases.

She's an unconventional lady who has traveled the world, practices the art of self-defense most excellently, and has an interesting tattoo in—ahem—a very unusual place. He's a former member of the Metropolitan Police, now a private investigator, who grew up on the poverty-ridden streets of Edinburgh and has worked the dangerous back alleys of London's notorious East End. A vicious murder brings them together in a race against time that takes them from the sordid back streets of London into the elite private clubs of the powerful and rich.

England. 1923. After a year away at finishing school where she learned etiquette, deportment, and the difference between a fish fork and a salad one, Kitty Worthington is eager to return home. But minutes after she and her brother Ned board the Golden Arrow, the unthinkable happens. A woman with a mysterious connection to her brother is poisoned, and the murderer can only be someone aboard the train. When Scotland Yard hones on Ned as the main suspect, Kitty sets out to investigate.

Twenty-six-year-old Beatrice Hyde-Clare is far too shy to investigate the suspicious death of a fellow guest in the Lake District. A spinster who lives on the sufferance of her relatives, she would certainly not presume to search the rooms of her host's son and his friend looking for evidence. Reared in the twin virtues of deference and docility, she would absolutely never think to question the imperious Duke of Kesgrave about anything, let alone how he chose to represent the incident to the local constable. And yet that's exactly what she does.

When Sophie, the least interesting of the Talbot sisters, lands her philandering brother-in-law backside first in a goldfish pond in front of all society, she becomes the target of very public aristocratic scorn. Her only choice is to flee London, vowing to start a new life far from the aristocracy. Unfortunately, the carriage in which she stows away isn't saving her from ruin. It's filled with it.

Spring, 1918. The Great War is at a crucial stage, the Germans are making one last push into France, and the Allies are struggling to hold them back. Battle lines are shifting, and men, and their machines, are being sent up and down the front to shore up defenses. Major Heathcliff Lennox, and his batman Greggs, are told to report to their new HQ. They set off on a sunlit day to fly the distance, but the enemy is never far away, and disaster strikes. They're sent crashing to the ground behind enemy lines, where life, death, and love await.

Lady Ludmilla Windmere is mortified. The spinster extraordinaire has fallen in love with her best friend, and that cannot be. The problem? She hasn't met him. Not once. For they have only ever corresponded by letter. When she sets out to uncover his identity, her world shatters. For Addy turns out to be none other but London's worst rake. Adrian St. Addington is perturbed. The rakehell extraordinaire is developing a marked tendre for a spinster, and that cannot be. The problem? She might be mistaking him for someone he is not. Or, what is worse, know precisely who he is. 

It's December 1837, and the young adults of the Cynster clan have succeeded in having the family Christmas celebration held at snowbound Casphairn Manor, Richard and Catriona Cynster's home. Led by Sebastian, Marquess of Earith, and by Lucilla, future Lady of the Vale, and her twin brother, Marcus, the upcoming generation has its own plans for the holiday season.

At twenty-two, Rosalie Harrow is unmarried and near destitute. She has two choices: snag a wealthy gentleman, or take work as a governess. Neither option appeals to headstrong Rosalie. When Rosalie receives an invitation to Alcott Hall, she believes she's there to meet the Dowager Duchess of Norland. Instead, Rosalie is thrust in the middle of a house party of eligible high society ladies all desperate to win the hand of the new, conveniently single duke.