Eli Whittaker only wants one thing: to find out who is selling American secret codes across Europe, arrest them, and go home to his sensible life in Washington, DC. He has one lead—a letter the culprit sent from a Viennese hotel. But when he arrives in Vienna, he is immediately swept up into a chaotic whirlwind of balls, spies, waltzes, and beautiful hotelkeepers who seem to constantly find themselves in danger. He disapproves of all of it! But his disapproval is tested as he slowly falls deeper into the chaos—and as his attraction to said hotelkeeper grows.

Amelie St. James, prima ballerina of the Paris Opera Ballet and sweetheart of Paris, is a fraud. Seven years ago, in the devastating aftermath of the Siege of Paris, she made a decision to protect her sister: she became the bland, sweet, pious “St. Amie” the ballet needed to restore its scandalous reputation. But when her first love reappears and the ghosts of her past come back to haunt her, all her hard-fought safety is threatened. Dr. Benedict Moore has never forgotten the girl who helped him embrace life again after he almost lost his. Now, years later, he’s back in Paris.

Opal is a lot of things—orphan, high school dropout, full-time cynic and part-time cashier—but above all, she's a determined to find a better life for her younger brother Jasper. One that gets them out of Eden, Kentucky, a town remarkable for only two things: bad luck and E. Starling, the reclusive nineteenth century author of The Underland, who disappeared over a hundred years ago. All she left behind were dark rumors—and her home. Everyone agrees that it’s best to ignore the uncanny mansion and its misanthropic heir, Arthur. Almost everyone, anyway.

Librarian Sylvia Ashe knows nothing about her past, having grown up without a father and a mother who refused to discuss him. When she stumbles upon a diary that suggests she's descended from magicians, she's skeptical. After all, magicians are special, and she's just an ordinary woman who loves books. She seeks answers from a member of the most prominent family of magicians, but she quickly learns that finding the truth won't be easy, especially when he turns out to be as artless as her, and more compelling and dangerous than books.

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?

When Eliza Sullivan inherits an estate from a recently deceased aunt, she leaves behind a grievous and guilt-ridden past in New Orleans for rural England and a fresh start. Eliza arrives at her new home and finds herself falling for the mysterious lord of Havenwood, Malcolm Winfield. Despite the sinister rumors that surround him, Eliza is drawn to his melancholy charm and his crumbling, once-beautiful mansion. With enough love, she thinks, both man and manor could be repaired.

It’s 1852 and Margaret Lennox, a young widow, attempts to escape the shadows of her past by taking a position as governess to an only child, Louis, at an isolated country house in the west of England. But Margaret soon starts to feel that something isn’t quite right. There are strange figures in the dark, tensions between servants, and an abandoned east wing. Even stranger is the local gossip surrounding Mrs. Eversham, Louis’s widowed mother, who is deeply distrusted in the village.

Rhode Island, 1846. Estranged from his family, writer Merritt Fernsby is surprised when he inherits a remote estate in the Narragansett Bay. Though the property has been uninhabited for more than a century, Merritt is ready to call it home—until he realizes he has no choice. With its doors slamming shut and locking behind him, Whimbrel House is not about to let Merritt leave. Ever.

Yorkshire, 1843. When disgraced former schoolmaster John Eyre arrives at Thornfield Hall to take up a position as tutor to two peculiar young boys, he enters a world unlike any he's ever known. Darkness abounds, punctuated by odd bumps in the night, strange creatures on the moor, and a sinister silver mist that never seems to dissipate. And at the center of it all, John's new employer - a widow as alluring as she is mysterious.

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.

At the end of his Grand Tour, somewhere between Athens and Constantinople, Christian Selwyn, the young Earl of Hazelmere, vanished—seemingly without trace. Time passes. In London, his uncle and cousin move into his home, while his unofficial fiancée, Sophia, is left desolate and in limbo.

Thorne Manor has always been haunted...and it has always haunted Bronwyn Dale. As a young girl, Bronwyn could pass through a time slip in her great-aunt's house, where she visited William Thorne, a boy her own age, born two centuries earlier. After a family tragedy, the house was shuttered and Bronwyn was convinced that William existed only in her imagination. Now, 20 years later Bronwyn inherits Thorne Manor. And when she returns, William is waiting.

Florence Day is the ghostwriter for one of the most prolific romance authors in the industry, and she has a problem—after a terrible breakup, she no longer believes in love. It’s as good as dead. When her new editor, a too-handsome mountain of a man, won't give her an extension on her book deadline, Florence prepares to kiss her career goodbye. But then she gets a phone call she never wanted to receive, and she must return home for the first time in a decade to help her family bury her beloved father.

Hart is a marshal, tasked with patrolling the strange and magical wilds of Tanria. It’s an unforgiving job, and Hart’s got nothing but time to ponder his loneliness. Mercy never has a moment to herself. She’s been single-handedly keeping Birdsall & Son Undertakers afloat in defiance of sullen jerks like Hart, who seems to have a gift for showing up right when her patience is thinnest. After yet another exasperating run-in with Mercy, Hart finds himself penning a letter addressed simply to “A Friend”.

In Victorian London, Genevieve Timmons poses as a spiritualist to swindle wealthy mourners—until one misstep lands her in a jail cell awaiting the noose. Then a stranger arrives to make her a peculiar offer. The lord he serves, Mr. Pemberton, has been inconsolable since the tragic death of his beautiful bride-to-be. If Genevieve can perform a séance persuasive enough to bring the young lord peace, she will win her freedom.