Deciding that true romantic heroes are a thing of the past, Eloise Kelly, an intelligent American who always manages to wear her Jimmy Choo suede boots on the day it rains, leaves Harvard's Widener Library bound for England to finish her dissertation on the dashing pair of spies the Scarlet Pimpernel and the Purple Gentian. What she discovers is something the finest historians have missed: a secret history that begins with a letter dated 1803.

September 1896: As an aspiring archaeologist, Smith College graduate Betsy Hayes travels to Athens, desperate to break into a very male-dominated field and find work at some of the world’s most famous excavation sites. In the midst of the heat and dust of Greece she finds an unlikely ally in philanthropist Charles, Baron de Robecourt, one of the few men who takes her academic passion seriously.

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.

2019: Andie Figuero has just landed her dream job as a producer of Mansion Makeover, a popular reality show about restoring America’s most lavish historic houses. Andie has high hopes for her latest project: the once glorious but gently crumbling Sprague Hall in Newport, Rhode Island, summer resort of America’s gilded class—famous for the lavish “summer cottages” of Vanderbilts and Belmonts. But Andie runs into trouble: the reclusive heiress who still lives in the mansion, Lucia “Lucky” Sprague, will only allow the show to go forward on two conditions.

Annabelle and Bayard Van Duyvil live a charmed life in New York: He's the scion of an old Knickerbocker family, she grew up in a Tudor house in England, they had a fairy-tale romance in London, and he's recreated her family home on the banks of the Hudson. Yes, there are rumors that she's having an affair with the architect, but rumors are rumors. But then Bayard is found dead with a knife in his chest on the night of their Twelfth Night Ball; Annabelle goes missing, presumed drowned; and the papers go mad.

As a lawyer in a large Manhattan firm, just shy of making partner, Clementine Evans has finally achieved almost everything she's been working towards—but now she's not sure it's enough. Her long hours have led to a broken engagement and, suddenly single at thirty-four, she feels her messy life crumbling around her. But when the family gathers for her grandmother Addie's ninety-ninth birthday, a relative lets slip hints about a long-buried family secret, leading Clemmie on a journey into the past that could change everything.

England, 1865: Newspaper columnist Lady Katherine Bascomb finds herself the subject of speculation when her latest article leads to an arrest in the murders plaguing London. The English believe women ought not to write about such vulgar things as crime, and a particularly attractive detective inspector is incensed that she's interfered with his investigation. To escape her sudden notoriety, Katherine heads to the country - only to witness a murder upon her arrival.

Lady Kathryn Lambert must marry a titled gentleman to claim her inheritance and has finally gained the attention of a duke. Yet she is unable to forget the scandalous second son who aided in her achievement - or his betrayal. Lord Griffith Stanwick is tormented by the bitter truth that as a “spare”, he will never be able to give Kathryn what she yearns to possess. But when his father is found guilty of treason, Griff detours into the dark and dangerous corners of London, haunted by memories of the woman lost to him forever.

Born into an aristocratic family, yearning for a life beyond Society’s strictures, Marguerite “Daisy” Townsend is an enterprising sleuth. Hired to obtain proof of a wife’s infidelity, she secures a position in the household of the woman’s lover, never expecting to be lured into the seductive blackguard’s arms herself. Devilishly handsome, David Blackwood, known widely as Bishop, quickly realizes the enticing maid is interested in far more than dusting. She aims to uncover his sins. Although tempted by the dangerous beauty, he can’t risk her learning the truth.

At the end of her first unsuccessful season out in society, Lady Georgiana has all but given up on attracting a suitable man - until she receives an invitation to a masked Halloween ball at Broxley Manor. Georgie is uncertain why she was invited, until she learns that the royal family intends to marry her off to a foreign prince, one reputed to be mad.

At birth, Mick Trewlove, the illegitimate son of a duke, was handed over to a commoner. Despite his lowly upbringing, Mick has become a successful businessman, but all his wealth hasn’t satisfied his need for revenge against the man who still won’t acknowledge him. What else can Mick do but destroy the duke’s legitimate son - and woo the heir’s betrothed into his own unloving arms.... Orphaned and sheltered, Lady Aslyn Hastings longs for a bit of adventure. With her intended often preoccupied, Aslyn finds herself drawn to a handsome man who seems to understand her so well.

A scandalous book by an anonymous author takes London by storm, and everyone is convinced its villainous “Lord K” is the greatly admired Earl of Knightly. Heartbroken that he left her at the altar, Miss Regina Leyland impulsively sought revenge by revealing the true Knightly to the world but never expected the uproar to bring enemies to her door. To keep her identity hidden, she must trust the one man with the power to destroy her.

Let the wicked be ashamed, and let them be silent in the grave. These ominous words, slashed from the pages of a book of Psalms, are the last threat that the darling of London society, Sir Edward Grey, receives from his killer. Before he can show them to Nicholas Brisbane, the private inquiry agent he has retained for his protection, Sir Edward collapses and dies at his London home, in the presence of his wife, Julia, and a roomful of dinner guests.

A lady does not smoke cheroot. She does not ride astride. She does not fence or attend duels. She does not fire a pistol, and she never gambles at a gentlemen's club. Lady Calpurnia Hartwell has always followed the rules, rules that have left her unmarried - and more than a little unsatisfied. And so she's vowed to break the rules and live the life of pleasure she's been missing. But to dance every dance, to steal a midnight kiss - to do those things, Callie will need a willing partner. Someone who knows everything about rule-breaking. Someone like Gabriel St. John, the Marquess of Ralston....

When Miss Rebecca Lane returns to her home village after a few years away, her brother begs for a favor: Go to nearby Swanford Abbey and deliver his manuscript to an author staying there who could help him get published. Feeling responsible for her brother's desperate state, she reluctantly agrees.