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. Drake Elton returns wounded from the field, followed by an enemy who just won't give up. He's smitten quickly by the intelligent Margot, but how can he convince a girl who lives entirely in her mind that sometimes life's answers lie in the heart? Amid biological warfare, encrypted letters, and a German spy who wants to destroy not just them but others they love, Margot and Drake will have to work together to save themselves from the very secrets that brought them together.

Zivon Marin was one of Russia's top cryptographers until the October Revolution tore apart his world. Forced to flee to England after speaking out against Lenin, Zivon is driven by a growing anger and determined to offer his services to the Brits. But never far from his mind is his brother, whom Zivon fears died in the train crash that separated them. Lily Blackwell sees the world best through the lens of a camera and possesses unsurpassed skill when it comes to retouching and re-creating photographs. With her father's connections in propaganda, she's recruited to the intelligence division, even though her mother would disapprove if she ever found out. After Captain Blackwell invites Zivon to dinner one evening, a friendship blooms between him and Lily that soon takes over their hearts. But both have secrets they're unwilling to share, and neither is entirely sure they can trust the other. When Zivon's loyalties are called into question, proving him honest is about more than one couple's future dreams--it becomes a matter of ending the war.

Living in London's poorest slum, Mercy Wilkins has little hope of a better life. When she's offered an opportunity to join a bride ship sailing to British Columbia, she agrees. After witnessing so much painful heartache and loss in the slums, the bride ship is her only prospect to escape a bleak future, not only for herself but, she hopes, someday for her sister. Wealthy and titled Joseph Colville leaves home and takes to the sea in order to escape the pain of losing his family. As ship's surgeon, he's in charge of the passengers' welfare aboard the Tynemouth, including sixty brides-to-be. He has no immediate intention of settling down, but when Mercy becomes his assistant, the two must fight against a forbidden love. With hundreds of single men congregating on the shore eager to claim a bride from the Tynemouth, will Mercy and Joseph lose their chance at true love, or will they be able to overcome the obstacles that threaten to keep them apart?

All of England thinks Phillip Camden a monster--a man who deliberately caused the deaths of his squadron. But as nurse Arabelle Denler watches the so-dubbed "Black Heart" every day, she sees something far different: a hurting man desperate for mercy. And when their paths twist together and he declares himself her new protector, she realizes she has her own role to play in his healing. Phillip Camden would have preferred to die that day with his squadron rather than be recruited to the Admiralty's codebreaking division. The threats he receives daily are no great surprise and, in his opinion, well deserved. What comes as a shock is the reborn desire to truly live that Arabelle inspires in him. But when an old acquaintance shows up and seems set on using him in a plot that has the codebreakers of Room 40 in a frenzy, new affections are put to the test.

In Edwardian London, not all that glitters is gold as a lady and an intelligence officer's secret mission take them from the city's dazzling ballrooms to its covert intelligence offices. Sir Merritt Livingstone has spent a decade serving the monarch in the field, but when pneumonia lands him behind a desk in the War Office Intelligence Division just as they're creating a new secret intelligence branch, he's intent on showing his worth. He suspects an aristocrat of leaking information to Germany as tensions mount between the two countries, but he needs someone to help him prove it, so he turns to The Imposters, Ltd. No one knows who they are, but their results are beyond compare. 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 for the elite to spy on the elite. Dubbed The Imposters, Ltd., their anonymous group soon becomes the go-to for the crème of society who 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. Lady Marigold is determined to discover the truth for her friend's sake, and she's more determined still to keep her heart from getting involved with this enigmatic new client . . . who can't possibly be as noble as he seems. "White's well-woven plot is engaging from start to finish with delightful threads of mystery, romance, and inspiration."--CARRIE TURANSKY, award-winning author

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 into 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, and he's happy to accept 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, who shares his love of botany and biology. But the hunt for his sister involves far more than nature walks, and he can't quite believe all the secrets Beth had been keeping from him. As Libby and Oliver work together, they find ancient legends, pirate wrecks, betrayal, and the most mysterious phenomenon of all: love.

After fulfilling a pledge to a dying friend, Zacharias Hamilton is finally free. No family entanglements. No disappointing those around him. Just the quiet bachelor existence he's always craved. Until fate snatches his freedom away when the baker of his favorite breakfast bun is railroaded by the city council. Despite not wanting to get involved, he can't turn a blind eye to her predicament . . . or her adorable dimples. Abigail Kemp needs a man's name on her bakery's deed. A marriage of convenience seems the best solution . . . if it involves a man she can control. That person definitely isn't the stoic lumberman who oozes silent confidence whenever he enters her shop. Control Zacharias Hamilton? She can't even control her pulse when she's around him. When vows are spoken, Abigail's troubles should be over. Yet threats to the bakery worsen, and darker dangers hound her sister. Can she put ever more trust in Zach without losing her dreams of independence?