Born with a perfect memory, Lady Elizabeth Beckett has become one of the world's most notorious spies, despite being the daughter of a duke. She is shielded only by her code name: Shadow. When young ladies of High Society begin disappearing from London, Eliza has no doubt who is orchestrating these crimes; a heinous man she has been investigating for years. Vowing to save them before they are sold to the highest bidder, she must risk everything to stop him.

In the eyes of London Society, Gillian Phelps is suitable enough. Though the ton whispers about her change of residence, any speculation remains just that: ballroom gossip. No one—not even the other Huntresses, the group of ladies she calls her dearest friends—knows that she is harboring a devastating family secret. Gillian has become adept at hiding the reality of her circumstances, but the close quarters of a house party will test her ability to conceal the crushing truth. And with so many people to deceive, the late arrival of another guest is a most unwelcome surprise.

Georgiana Allen is a spinster, and everybody knows it. She also happens to be one of the writers for the Spinster Chronicles, and everybody knows that, as well. She’s accepted her lot in life, and along with the other spinsters in her circle, takes great pride in the articles she writes and the influence she has. Then, Captain Anthony Sterling infiltrates their group and her life, and Georgie impossibly begins to hope, once more.

Determined to support her mother and sisters after her father's untimely death, Charlotte Mandeville covertly crafts satirical caricatures of high society. It not only puts money in her family’s bare pockets, but ensures the haut-ton cannot guard all the power and the secrets. Anthony Yorke has a guilty conscience and a brother to exonerate. When the key piece of evidence to clear his brother's name falls into the hands of a headstrong young woman, he is willing to do whatever is required to obtain it from her.

In a bid to escape the incessant attentions of a man she does not love, governess Lucy Hayes embarks on a journey to begin a new post. But when she’s stranded in a storm, her plans go shockingly awry. Desperate times call for desperate measures: against her better judgment, she agrees to a foolhardy scheme presented by a handsome stranger, known to her as only William. But when her mysterious benefactor falls ill, she finds herself unwittingly drawn into his family home in a case of mistaken identity: they believe she is William’s betrothed.

Lady Edwina Lockwood grapples with the loss of her father when her cousin extends an invitation to Lord Hilgrove to visit Brockhall Manor. She intends to avoid this houseguest, but he quickly becomes a constant presence, much to her annoyance. Despite her initial reluctance, Edwina discovers she can offer support to Lord Hilgrove as he copes with his own grief.

Miss Emma Pearson lives the most remarkable life for the daughter of a constable. Because of her brother's heroics in Scotland, she has astonishingly become the ward of the Marquess of Downshire. Now, she wears only the finest clothes and mingles with members of high Society. Unfortunately, not everything goes as planned when a series of accidents causes her Season to be ruined before it has even begun.

Julia Cummings has long been acquainted with loss - her mother, her brother, her sister, her friend, all gone too soon. But the loss that pushed her grief to the limit as a young girl was that of her best friend, Lucas Jonquil, who abandoned her without looking back. Now, eight years later, Lucas has returned to Lampton Park, and Julia has steeled herself - she will never forgive the man who broke her heart.

Miss Dinah Ashmore has a problem: her sister has gone missing, and the constable isn’t taking it seriously. She decides to take matters into her own hands by hiring a Bow Street Runner, not understanding the danger she has put herself in. Nathaniel Calvert, Earl of Hawthorne, is an agent of the Crown. His assignment is to root out a radical group and bring them to justice. When Miss Ashmore mistakes him as a Bow Street Runner and explains her plight, he suspects that the missing sister might be connected to his case.

When their elderly guardian dies, Faith Whitford is determined to set up house in Bath and look for respectable country gentlemen for her four sisters. She has no ambitions for mingling with the ton. What she did not expect was a new guardian, in the form of a London Beau to be appointed over them, nor that he would take any interest in their care.

Lady Sophronia Bremerton is a far cry from the typical debutante, but she’s the toast of London’s upper class for one simple reason: she’s a society columnist for the London Illustrated News, and the gentry loves seeing their exploits printed in the gossip pages. But Sophie has bigger plans - she aspires to be an investigative reporter. When a stuffy ballroom during yet another Season proves to be nothing more than the usual rumor mill, Sophie seeks respite in the library, alongside four other young women who, for their own reasons, are also looking for escape.

When Felicity Thurston is caught alone with a man at a ball, she must marry him to avoid a ruined reputation. But what she doesn't know is that he's the brother of the man she loves.

When a cryptic invitation brings Giulia Pepper to her uncle's remote estate in Devon, she arrives in dire need of a benefactor, only to discover that her uncle never sent her any invitation—nor does he want her there. Forced into a corner, Giulia must contrive a way to convince him to allow her to remain, just long enough to figure out where to go next.

When faced with an unwanted marriage, Alice Rosemeyer accepts an invitation to the estate of Larkhall. Determined to earn her future security without a husband, she begins operating as the anonymous Ace of Hearts, writing letters and offering advice on behalf of the men eager to secure a match at the close of the London season. If she can manage to keep her identity secret, her reputation intact, and avoid the arrogant house guest, Mr. Thomas Herring, she might just call herself successful.

Lady Madalene Ramsbury has been summoned home from Miss Bell’s Finishing School to some unfortunate news. In three weeks, she is to be married to a man she’s never met. Rather than face a life she does not want; she flees from her own engagement party and elicits help from a most unlikely source. Society’s golden boy, Everett, the Marquess of Northampton, was outraged when a young woman suddenly appeared in his curricle. Was she attempting to trap him into an unwanted marriage? It would be just like some overzealous mother to put her up to such a ploy.

Georgiana Allen is a spinster, and everybody knows it. She also happens to be one of the writers for the Spinster Chronicles, and everybody knows that, as well. She’s accepted her lot in life, and along with the other spinsters in her circle, takes great pride in the articles she writes and the influence she has. Then, Captain Anthony Sterling infiltrates their group and her life, and Georgie impossibly begins to hope, once more.

Hiding from the horrors of her past, Martha Haskett is content living her days serving as a lady's maid to her friend Eliza. But then her father, the new Earl of Waterford, shows up, with the shocking news that she is now a titled lady. Further turning her life upside down, he proposes a bargain. She will have a single Season in London, and if she does not marry by the end of the Season, she will be gifted with her dowry and a small estate. Despite her mistrust of her father, Martha accepts his offer, but can't seem to let go of the anger that has been festering inside of her.

Miss Emma Pearson lives the most remarkable life for the daughter of a constable. Because of her brother's heroics in Scotland, she has astonishingly become the ward of the Marquess of Downshire. Now, she wears only the finest clothes and mingles with members of high Society. Unfortunately, not everything goes as planned when a series of accidents causes her Season to be ruined before it has even begun.

Lord Morgan Easton is, first and foremost, an agent of the Crown. To achieve his purposes, he has become Society's golden boy, and a renowned rake. When it's discovered that notorious French spy, Genet, is attending a house party in a small seaside village, he is tasked to infiltrate the gathering and arrest the spy. But first, he must convince a certain woman to become his partner and pose as his wife. The challenge is that she would rather see him dead.

Born with a perfect memory, Lady Elizabeth Beckett has become one of the world's most notorious spies, despite being the daughter of a duke. She is shielded only by her code name: Shadow. When young ladies of High Society begin disappearing from London, Eliza has no doubt who is orchestrating these crimes; a heinous man she has been investigating for years. Vowing to save them before they are sold to the highest bidder, she must risk everything to stop him.