The year is 1901, and the hustle and bustle of the holidays is descending on New York's Fifth Avenue. For the first time in her privileged life, Adelaide Forsythe couldn’t be happier about the prospect of a quiet Christmas. That’s not to say her transition from Missto Mrs. has been without challenge. Though she doesn’t regret marrying for love instead of wealth, she feels woefully unprepared to run her own household. Then, on the first Sunday of Advent, winter winds bring surprising change, first through a young orphan boy and then a seasoned housekeeper who seems too good to be true.

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.

After eight years in India, Oxford's most eligible bachelor, Edmund Price, has come out of the shadows to run for Parliament and is in search of an Egyptologist to value a newly acquired collection. Expecting a renowned Oxford professor, Edmund instead finds himself entangled with Ami, the professor's determined daughter. As they delve into the treasures, their connection deepens, but trouble emerges when a golden griffin—rumored to bear the curse of Amentuk—surfaces, and they're left to wonder if the curse really is at play, or if something more nefarious is hiding among the shadows . . .

1906: Lady Elizabeth “Libby” Sinclair, with her love of microscopes and nature, isn’t favored in society. She flees to the beautiful Isles of Scilly for the summer and stumbles onto the dangerous secrets left behind by her holiday cottage’s former occupant, also named Elizabeth, who mysteriously vanished. Oliver Tremayne - gentleman and clergyman - is determined to discover what happened to his sister, with the help of the girl now living in what should have been Beth’s summer cottage...especially when he realizes it’s the curious young lady he met briefly two years ago.

Peter Holstein writes his popular series of adventure novels under a pen name. With European politics boiling and his own neighbors suspicious of him, Peter debates whether it might be best to change his name for good. When Rosemary shows up at his door pretending to be a historian and offering to help him trace his family history, his question might be answered. But as the two work together and Rosemary sees his gracious reaction to his neighbors' scornful attacks, she wonders if her assignment is going down the wrong path.

Cordelia Owens can weave a hopeful dream around anything and is well used to winning the hearts of everyone in Savannah with her whimsy. Even when she receives word that her sweetheart has been lost during a raid on a Yankee vessel, she clings to hope and comes up with many a romantic tale of his eventual homecoming to reassure his mother and sister.

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.

Sabina Mancari never questioned her life as the daughter of Chicago's leading mob boss until bullets tear apart her world and the man she thought she loved turns out to be an undercover Prohibition agent. Ambushes, bribes, murder, prostitution—all her life, her father sheltered her from his crimes, but now she can no longer turn away from the truth. Maybe Lorenzo, the fiance who barely paid her any attention in the last two years, has the right idea by planning to escape their world. But can she truly turn her back on her family?

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.

Three years into the Great War, England's greatest asset is their intelligence network - field agents risking their lives to gather information, and codebreakers able to crack every German telegram. Margot De Wilde thrives in the environment of the secretive Room 40, where she spends her days deciphering intercepted messages. But when her world is turned upside down by an unexpected loss, for the first time in her life numbers aren't enough.

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.

Katherine Schneider’s life as a dentist in 1913 New York is upended when a patient reveals details of a deadly plot while under the influence of laughing gas. As she is plunged into danger, she seeks help from the dashing Lieutenant Jonathan Birch, a police officer she has long admired from afar.

Haunted by the death of her sister, Finola Shanahan has resolved that she's not worthy of a family of her own and commits to spending her days caring for immigrants in the slums. Unwilling to consider marriage, Finola has perfected the ability to sabotage the relationships her parents arrange for her. At wit's end, her father calls upon the local Irish matchmaker, who pairs her with successful wagonmaker Riley Rafferty.

In the eyes of London Society, Gillian Phelps is suitable enough. Though the ton whispers about her change of residence, any speculation remains just that: ballroom gossip. No one—not even the other Huntresses, the group of ladies she calls her dearest friends—knows that she is harboring a devastating family secret. Gillian has become adept at hiding the reality of her circumstances, but the close quarters of a house party will test her ability to conceal the crushing truth. And with so many people to deceive, the late arrival of another guest is a most unwelcome surprise.

Richard Brockwell, the younger son of Ivy Hill's most prominent family, hasn't been home for Christmas in years. He prefers to live in the London townhouse, far away from Brockwell Court, the old family secret that haunts him, and the shadows of his past mistakes. But then his mother threatens to stop funding his carefree life - unless he comes home for Christmas. Out of options, he sets out for Ivy Hill, planning to be back on a coach bound for London and his unencumbered bachelor life as soon as the festivities are over.

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.

Paris, 1940. Ever since the Nazi Party began burning books, German writers exiled for their opinions or heritage have been taking up residence in Paris. There they opened a library meant to celebrate the freedom of ideas and gathered every book on the banned list . . . and even incognito versions of the forbidden books that were smuggled back into Germany. For the last six years, Corinne Bastien has been reading those books and making that library a second home. But when the German army takes possession of Paris, she loses access to the library and all the secrets she’d hidden there.

Cordelia Owens can weave a hopeful dream around anything and is well used to winning the hearts of everyone in Savannah with her whimsy. Even when she receives word that her sweetheart has been lost during a raid on a Yankee vessel, she clings to hope and comes up with many a romantic tale of his eventual homecoming to reassure his mother and sister.

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.

The year is 1901, and the hustle and bustle of the holidays is descending on New York's Fifth Avenue. For the first time in her privileged life, Adelaide Forsythe couldn’t be happier about the prospect of a quiet Christmas. That’s not to say her transition from Missto Mrs. has been without challenge. Though she doesn’t regret marrying for love instead of wealth, she feels woefully unprepared to run her own household. Then, on the first Sunday of Advent, winter winds bring surprising change, first through a young orphan boy and then a seasoned housekeeper who seems too good to be true.

Three years into the Great War, England's greatest asset is their intelligence network - field agents risking their lives to gather information, and codebreakers able to crack every German telegram. Margot De Wilde thrives in the environment of the secretive Room 40, where she spends her days deciphering intercepted messages. But when her world is turned upside down by an unexpected loss, for the first time in her life numbers aren't enough.

Arden Bleu has always known that her stepsister, Jade, was destined for great things. In a world where beauty follows magic, she has no doubt that their upcoming Awakening ceremony will reveal that gorgeous, kind, compelling Jade is far more than a mere mortal. But when Jade is kidnapped by a mysterious sect of mer on the eve of the newly-returned king's ball, Arden will do anything to save her sister. Even face down the man she's always dreaded meeting because of the power he holds over her family, the man to whom her father swore loyalty long before she was born.

1906: Lady Elizabeth “Libby” Sinclair, with her love of microscopes and nature, isn’t favored in society. She flees to the beautiful Isles of Scilly for the summer and stumbles onto the dangerous secrets left behind by her holiday cottage’s former occupant, also named Elizabeth, who mysteriously vanished. Oliver Tremayne - gentleman and clergyman - is determined to discover what happened to his sister, with the help of the girl now living in what should have been Beth’s summer cottage...especially when he realizes it’s the curious young lady he met briefly two years ago.

Katherine Schneider’s life as a dentist in 1913 New York is upended when a patient reveals details of a deadly plot while under the influence of laughing gas. As she is plunged into danger, she seeks help from the dashing Lieutenant Jonathan Birch, a police officer she has long admired from afar.

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.

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.

Sowerby, England, 1802. Miss Genevieve Wilde—a magistrate’s daughter and independent heiress—is determined to meet life’s challenges all on her own, just as her late-father had taught her. So when her father’s pocket watch is stolen, she will do anything to get it back, especially when the local authorities prove incompetent. Upon reading an advertisement in the paper, she takes a chance and contacts a thief-taker to find the watch. It’s a choice Ginny regrets when former Bow Street officer Jack Travers arrives on her doorstep.

In 1783 peace has been declared, but war still rages in the heart of Lark Benton. Never did Lark think she’d want to escape Emerson Fielding, the man she’s loved all her life. But when he betrays her, she flees Williamsburg for Annapolis, taking refuge in the nation’s temporary capital. There lark throws herself into a new circle of friends who force her to examine all she believes. Emerson follows, determined to reclaim his betrothed. Surprised when she refuses to return with him, he realizes that in this new nation he has come to call his own, duty is no longer enough.

Once known among New York's elite as the American Adonis, Everett Griffin now lives as a recluse in the wilds of Texas. The treachery of a former admirer left his face and his spirit riddled with scars, so he hides himself away, his only companions a trio of trusted servants and an oversized dog. Locals whisper of the beastly man who lives in the gloomy manor outside of town and his tendency to attack anyone who dares approach. Everett relishes his fearsome reputation and uses it as a shield to guard his privacy.

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.