When German bombs set London ablaze, BBC radio correspondent Hugh Collingwood reports on the Blitz, eager to boost morale while walking the fine line between truth and censorship. But the Germans are not the only ones Londoners have to fear as a series of murders flame up amid the ashes. The deaths hit close to home for Hugh, and Aleida needs his help to locate her missing son. As they work together, they grow closer and closer, both to each other and the answers they seek. But with bombs falling and continued killings, they may be running out of time.

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.

Paris, 1944: The war is nearly over, but for members of the Resistance in occupied France, it is more dangerous than ever before. Twenty-five-year-old Gabby Foucher loathes the Nazis, though as the concierge of 10 rue Royale, she does her best to avoid conflict - unlike her bolder sister Yvette, who finds trouble at every turn.

In 1942, an impulsive promise to her brother before he goes off to the European front puts Avis Montgomery in the unlikely position of head librarian in small-town Maine. Though she has never been much of a reader, when wartime needs threaten to close the library, she invents a book club to keep its doors open. The women she convinces to attend the first meeting couldn't be more different—a wealthy spinster determined to aid the war effort, an exhausted mother looking for a fresh start, and a determined young war worker.

Rome, 1943. With the fall of Italy’s Fascist government and the Nazi regime occupying the streets of Rome, British ballerina Julia Bradbury is stranded and forced to take refuge at a hospital on Tiber Island. But when she learns of a deadly sickness sweeping through the quarantine wards—a fake disease known only as Syndrome K—she is drawn into one of the greatest cons in history. Alongside hospital staff, friars of the adjoining church, and two Allied medics, Julia risks everything to rescue Jewish Italians from the deadly clutches of the Holocaust.

In the summer of 1918, Captain Marcus Weatherford arrives in Russia on a secret mission, with a beautiful ballerina posing as his fiancee. Marcus searches for the Romanov tsarina and her son—who both allegedly survived the murdering Bolsheviks—and the information behind an allied plot to assassinate Lenin. But Marcus's sense of duty battles his desire to return home to Clare—his actual love.

In the wake of WWII, a grieving fisherman submits a poem to a local newspaper: a rallying cry for hope, purpose...and rocks. When the poem spreads farther than he ever intended, Robert Bliss's humble words change the tide of a nation. Boxes of rocks inundate the tiny coastal Maine town, and he sets his calloused hands to work, but the building halts when tragedy strikes. Decades later, Annie Bliss is summoned back to Ansel-by-the-Sea when she learns her Great-Uncle Robert, the man who became her refuge during the hardest summer of her youth, is now the one in need of help.

When concert pianist Vivienne Mourdant’s father dies, he leaves to her the care of a patient at Hurstwell Asylum. Vivienne had no idea the woman existed, and yet her portrait is shockingly familiar. When the asylum claims she was never a patient there, Vivienne is compelled to discover what happened to the figure she remembers from childhood dreams.

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.

In the search for the truth, the line between fact and fiction is beginning to fall out of focus It is 1903, and Lily Temple is a beautiful silent-film actress who spins fairy tales and plays frivolous roles in front of the cine-camera. But beneath the costumes and stage makeup is a woman with a quick wit, a murky past, and a tantalizing secret. As an underground investigator to the wealthy, Peter Driscoll has been tasked with locating the legendary Briarwood Teardrop, an exquisite sapphire that has been missing for years—and which Lily happens to be wearing beneath her gown.