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.

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.

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.

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.

Patience Whitford spent the last two seasons watching her elder sisters make grand matches. She is thoroughly apprehensive with the notion of being limited by marriage. But that seems like an inconsequential concern with no prospects on the horizon to follow in her sisters' footsteps. And to make matters worse, she is uncommonly jealous of all of the military officers she's befriended and their grand adventures. When Major Ashley Stuart is assigned to investigate some petty crimes near his brother's estate in Greenwich, it soon becomes apparent that there is something much larger going on.

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.

Eliza Rose is the perfect lady—accomplished in pianoforte, riding, and multiple languages—until a scandal disrupts her privileged world. The fallen Rose family has struggled to regain their standing until a fortuitous connection helps Eliza re-secure her family’s place in Society, giving her everything she believed she wanted.

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.

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.

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.

Richard Graham cannot believe his luck when his great-aunt promises him a fortune if he’s married by Twelfth Night. He can finally clear his father’s debts and save his beloved Belside Manor. Miss Ruth Steele meets all the marriageable requirements his aunt insisted upon, but he’ll need the help of her clever and beautiful sister, Grace, to win the quiet woman over. Not only is Grace a dear friend to his younger sister, with loyalties to his family estate, but she also happens to owe him a generous favor.

Rose Portman, determined spinster, has a bit of a predicament. Her great aunt has challenged her to get married before Twelfth Night and promised that, if she does, Rose will inherit the perfect country cottage with the funds to maintain it. Rose has always wanted to get away from London and Society, and this could be her chance! But the catch is that Rose has to attend a holiday house party in York and find a husband among the guests. Worst of all… she must marry for love.

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 Frances Rowley is no ordinary debutante—feisty, intelligent, and determined to forge her own destiny, she faces an unwanted marriage that threatens to bind her to a life she dreads. With her options dwindling, Frances turns to the one person she swore never to ask for help: her scandalous childhood friend, the Duke of Hargate, Johnathan Seton.

When Lady Jemima Fitzwater is dismissed from Princess Charlotte’s household, she discovers that her invalid mother at Cavendish Square has been running through money like water. Jemima tries to fend off the mounting debts, but an unfortunate indiscretion from her past threatens to destroy both her reputation and her resolve. The only person who might be able to help is her man of business, Mr. Talbot, but is telling him her secret too high a price to pay?

Since her mother's disappearance seven years ago, Lady Sarah Denham has remained resolutely at Manderfield Hall. She is certain her mother will someday return home, so when the estate is sold, Sarah can't bear to let go of the house or the hope it symbolizes. There's only one solution that will allow her to stay: she must marry the new owner. But her impulsive proposal does not go as planned.

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.

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.