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.

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.

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.

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.

Kate journeys to the stately manor of Blackmoore and enlists the help of her dearest childhood friend, Henry Delafield. But when it comes to matters of love, bargains are meaningless and plans are changeable. There on the wild lands of Blackmoore, Kate must face the truth that has kept her heart captive. Will the proposal she is determined to reject actually be the one thing that will set her heart free?

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.

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.

Hidden away in rural Devonshire, Phyllida Satterthwaite has always been considered more odd than beautiful. But in London, her oddity has made her a sensation. Far worse, it’s caught the eye of the sinister Duke of Moreland - a notorious art collector obsessed with acquiring one-of-a-kind treasures. To escape the duke’s clutches, she’s going to need a little help. Captain Arthur Heywood’s days of heroism are long past. Grievously injured in the Peninsular War, he can no longer walk unaided, let alone shoot a pistol. What use can he possibly be to a damsel in distress?

Sophie Appersett is quite willing to marry outside of her class to ensure the survival of her family. But the darkly handsome Mr. Edward Sharpe is no run-of-the-mill London merchant. He's grim and silent. A man of little emotion - or perhaps no emotion at all. After two months of courtship, she's ready to put an end to things. But severing ties with her taciturn suitor isn't as straightforward as Sophie envisioned.

Lieutenant John Holdsworth, a valiant veteran of the Battle of Waterloo, carries not only the physical wounds of war but the haunting memories that threaten to shackle his heart forever. Now, as the steward of a sprawling Scottish estate, he finds solace in his work in the solitude of the Highlands. Catriona Craig is the enchanting adopted daughter of Lord Craig. Her world revolves around the compassionate act of healing. Amidst the winds and fragrant meadows of the estate, she discovers her purpose, nursing not only the ailments of the body but also the wounded spirits that cross her path.

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.

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.

When Miss Henrietta Dixon wants something, she finds a way to have it. When an incident in London sends her and her sister to Bath, she can think of no better opportunity to reunite her sister with the man she has always loved by inviting him to stay at the last available townhouse next door in the Royal Crescent. Her plan is coming along splendidly, until the earl of Guildford walks—or rather, saunters—into town, and steals it from under her nose.

Kate Matcham needs a fortune or a husband. She wants neither. With a tainted inheritance in the balance, she receives one offer to become a scoundrel's mistress and another offer of a marriage of convenience. Before resigning herself to a choice, she accepts the invitation to visit a childhood friend, considering it a last hurrah before embarking on a bleak future. The visit goes sideways when she falls for the gentleman her friend intends to marry, a man well out of Kate's league—and one who seems to be hiding something.