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.

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.

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.

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.

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.

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.

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.

Gregory Dinard, a young and inexperienced duke, finds himself in need of a companion to help him navigate the intricacies of his new role. Uncertain of his abilities and unwilling to take a chance at love, he looks for a marriage of mutual benefit rather than a match of mutual affection.

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.

Miss Emma Wynn has spent the last year at Ashwick Hall under the protection of Lady Westcliffe. Her uncle and brother think her dead and must continue to do so until she attains her majority. She must prove she is a fit guardian to re-establish herself and protect her brother. When permitted to visit her friend, Lady Eagleton, she is drawn to the reclusive Mr Carne. She suspects, however, that some scandal is attached to him, and she cannot afford to be tainted by association.

Grace Sinclair has been callously cast out of her home. And though taken in as an orphaned child by the vicar and his wife, her unsurpassed beauty makes it impossible for her to remain in the vicar’s household - with two daughters of their own about to enter Society, the vicar and his wife see Grace as nothing but competition. Thankfully, Grace’s estranged Aunt Bell has agreed to take her in to her home in London. But Grace soon learns her situation has just gotten much worse.

Emma Caldwell doesn’t hate anyone—except for Hugh Warrilow, the man who jilted her older sister and left like a coward to join the army. Men are clearly not to be trusted, and Emma is determined not to give her heart to one. No, a marriage of convenience is the very thing to suit her.

Jenny Summerlin is struggling to save her dying orange grove when a baffling mystery upends her world. A skeleton buried with a priceless treasure has been found on her land, which brings of flood of investigators onto her property to study a decades old crime. Captain Wyatt Rossiter is charged with solving the puzzling discovery. Unfortunately, he is also the man who broke Jenny's heart two years earlier. Plagued with regrets and unresolved feelings for Jenny, Wyatt resists getting drawn back into her world, but he cannot rest until he solves the unusual crime.