Anna O'Brien leads a predictable and quiet life as a map librarian at the illustrious Library of Congress until she stumbles across the baffling mystery of a ship disappeared at sea. Thwarted in her attempts to uncover information, her determination outweighs her shyness and she turns to a dashing congressman for help. Luke Callahan was one of the nation's most powerful congressmen before his promising career was shadowed in scandal. Eager to share in a new cause and intrigued by the winsome librarian, he joins forces with Anna to solve the mystery of the lost ship.

Left with an estate on the brink of bankruptcy after their father's death, Lady Marigold Fairfax and her brother open a private investigation firm marketed to the elite . . . to spy on the elite. Dubbed The Imposters, Ltd., their anonymous group soon becomes the go-to for the crème of society when they want answers delivered surreptitiously. But the many secrets Marigold learns about her peers pale in comparison to her shock when she and her brother are hired to investigate her best friend's father as a potential traitor.

Telegraph operator Lucy Drake is a master of Morse code, but the presence of Sir Colin Beckwith at a rival news agency puts her livelihood at risk. Despite their rivalry, Lucy realises Colin's connections could be just what her family needs to turn the tide of their long legal battle over their stolen fortune. When she negotiates an unlikely alliance with him, neither of them realises how far the web of treachery they're wading into will take them.

Gray Delacroix has dedicated his life to building his very successful global spice empire, but it has come at a cost. Resolved to salvage his family before it spirals out of control, he returns to his ancestral home to save his brother and sister before it's too late. As a junior botanist for the Smithsonian, Annabelle Larkin has been charged with the impossible task of gaining access to the notoriously private Delacroix plant collection. If she fails, she will be out of a job and the family farm in Kansas will go under.

In 1942, Evie Farrow is used to life on Ocracoke Island, where every day is the same—until the German U-boats haunting their waters begin to wreak havoc. And when special agent Sterling Bertrand is washed ashore at Evie's inn, her life is turned upside down. While Sterling's injuries keep him inn-bound for weeks, making him even more anxious about the man he's tracking, he becomes increasingly intrigued by Evie, who seems to be hiding secrets of her own.

Mary Beckwith lives in a magnificent English castle during the twilight years of the Gilded Age. With the help of an American millionaire, she has succeeded in renovating her beloved Whitefriars castle into a splendid estate just in time for Christmas. From across the ocean, millionaire Everett Wooten has spent a fortune propping up Whitefriars to add modern conveniences and rebuild crumbling old walls. Even though he’s never met Mary, they have enjoyed a lively business correspondence over the nine years they have been working toward a renovation.

Sophie van Riijn needs access to the highest spot in her village to report accurate weather readings. Fascinated by Dierenpark, an abandoned mansion atop a windswept cliff, Sophie knows no better option despite a lack of permission from the absent owners. Quentin Vandermark intends to put an end to the rumours that have plagued his family by tearing down the mansion. But when the secrets of the Vandermarks are no longer content to stay in the past, will tragedy triumph, or will hope prevail?

Despite her misgivings, Kate agrees to Trevor's risky proposal to join him in his work to find a cure for tuberculosis. As Kate begins to unlock the mysteries of Trevor's past, his hidden depths fascinate her. But a shadowy enemy lies in wait, and Trevor's closely guarded secrets are darker than she ever suspected. As revelations from the past threaten to destroy their careers, their dreams, and even their lives, Trevor and Kate find themselves in a painfully impossible situation. With everything to lose, they must find the strength to trust that hope and love can prevail over all.

It has been six years since army nurse Jenny Bennett's heart was broken by a dashing naval officer. Now Lieutenant Ryan Gallagher has abruptly reappeared in her life at the Presidio army base but refuses to discuss the inexplicable behavior that destroyed their happiness. Ryan is in an impossible situation. One of the few men in the world qualified to carry out a daring assignment, he accepted a government mission overseas.

When their father's death leaves them impoverished, Sarah Summers and her genteel sisters fear they will be forced to sell the house and separate to earn livelihoods as governesses or companions. Determined to stay together, Sarah convinces them to open their seaside home to guests to make ends meet and provide for their ailing mother. Instead of the elderly invalids they expect to receive, however, they find themselves hosting eligible gentlemen. Sarah is soon torn between a growing attraction to a mysterious Scottish widower and duty to her family.

Miss Gwendolyn Brinley accepted a temporary paid companion position for the Newport summer season, believing it would be a lark to spend the summer in America's most exclusive town. She suddenly finds her summer turning anything but amusing when her employer expects her to take over responsibilities as an assistant matchmaker. Tasked with the daunting prospect of attaining advantageous matches for her clients, Gwendolyn soon finds herself in the company of Mr. Walter Townsend, the catch of the Season, but a gentleman Gwendolyn finds beyond annoying.

Beauty has been nothing but a curse to Penelope Snow. When she becomes a personal maid for a famous actress whose troupe is leaving Chicago to tour the West, she hides her figure beneath shapeless dresses and keeps her head down. But she still manages to attract the wrong attention, leaving her prospects in tatters—and her jealous mistress plotting her demise.

In 1715, Lady Blythe Hedley's father is declared an enemy of the British crown because of his Jacobite sympathies, forcing her to flee her home in northern England. Secreted to the tower of Wedderburn Castle in Scotland, Lady Blythe awaits who will ultimately be crowned king. But in a house with seven sons and numerous servants, her presence soon becomes known.

After witnessing a wrongful conviction as a young girl, Rebecca Whitman—the first female court reporter in Montana—is now determined to defend the innocent. During a murder trial, something doesn't sit well with her about the case, but no one except the handsome new Carnegie librarian will listen to her.

As a former smokejumper, arson investigator Bri Tucker knows her way around fires. But after a mysterious blaze takes the life of a former colleague, Bri inherits a curious puzzle from him that raises questions about several fiery deaths. Someone, however, doesn’t want her picking up where he left off in search of answers. When she teams up with ATF Special Agent Marc Davis to solve the puzzle, the case heats up—as does the attraction between them.