Paris, 1939: The Nazis think Éliane can't understand German. They’re wrong. They think she’s merely cataloging art in a Louvre museum and unaware they’re stealing national treasures for their private collections. They have no idea she’s carefully decoding their notes and smuggling information to the Resistance. But Éliane is playing a dangerous game. Does she dare trust the man she once loved with her secrets, or will he only betray her once again?

1940: As the Germans advance upon Paris, young seamstress Estella Bissette is forced to flee everything she's ever known. She's bound for New York City with her signature gold dress, a few francs, and a dream: to make her mark on the world of fashion. Present day: Fabienne Bissette journeys to the Met's annual gala for an exhibit featuring the work of her grandmother - a legend of women's fashion design. But as Fabienne begins to learn more about her beloved grandmother's past, she uncovers a story of tragedy, heartbreak, and family secrets that will dramatically change her own life.

At the height of WWII, five idealistic young Americans receive a mysterious letter from the OSS, asking them if they are willing to fight for their country. The men and women from very different backgrounds - a Texan athlete with German roots, an upper-crust son of a French mother and a wealthy businessman, a dirt-poor Midwestern fly fisherman, an orphaned fashion designer, and a ravishingly beautiful female fencer - all answer the call of duty, but each for a secret reason of his or her own. They bond immediately, in a group code-named Dragonfly.

An orphan who spent her youth without a true home, Marion Hoxton found in the Great War something other than destruction. She discovered a chance to belong. As a member of the Women’s Royal Naval Service—the Wrens—Marion gained sisters. She found purpose in her work as a motorcycle dispatch rider assigned to train and deliver carrier pigeons to the front line. And despite the constant threat of danger, she and her childhood friend Eddie began to dream of a future together. Until the battle that changed everything.

Seventeen-year-old Margaux doesn’t realize one photo could change the course of her life. But in German-occupied Paris, nothing makes sense anymore. Margaux fears the worst when her lover is arrested. And when her photo appears in Nazi propaganda, her family’s reputation and prospects suffer the consequences. In 2008, Margaux has moved into a retirement home, and her granddaughter Barbara continues to live in the Paris apartment they used to share.

The 2:00 a.m. call is the first time Lexie Vidler has heard her sister's voice in years. Annie is a drug addict, a thief, a liar - and in trouble, again. Lexie has always bailed Annie out, given her money, a place to sleep, sent her to every kind of rehab. But this time, she's not just strung out - she's pregnant and in premature labor. If she goes to the hospital, she'll lose custody of her baby - maybe even go to prison. But the alternative is unthinkable.

Sophie Dix fled Stuttgart with her brother as the Nazi regime gained power in Germany. Now, with her brother gone and her adopted home city of Paris conquered by the Reich, Sophie reluctantly accepts a position restoring damaged art at the Jeu de Paume museum under the supervision of the ERR—a German art commission using the museum as a repository for art they’ve looted from Jewish families.

Berlin, 1930—When a wave of change sweeps a radical political party to power, Sofie von Meyer Rhodes’s academic husband benefits from the ambitions of its newly elected chancellor. Although Sofie and Jürgen do not share the social views growing popular in Hitler’s Germany, Jürgen’s position with its burgeoning rocket program changes their diminishing fortunes for the better. But as Sofie watches helplessly, her beloved Berlin begins to transform, forcing her to consider what they must sacrifice morally for their young family’s security, and what the price for their neutrality will be.

Rainey’s grandmother makes a startling request: Take me home. To Ireland, the country she fled post-World War II. Though they’re inseparably close, Rainey knows few of her grandmother’s secrets. Until they arrive at Aisling—the majestic estate on the southern coast of Ireland where her grandmother was raised—and Rainey discovers a collection of seventy-year-old letters in a trunk.

1941. Audrey Coltrane has always wanted to fly. It's why she implored her father to teach her at the little airfield back home in Texas. It’s why she signed up to train military pilots in Hawaii when the war in Europe began. And it’s why she insists she is not interested in any dream-derailing romantic involvements, even with the disarming Lieutenant James Hart, who fast becomes a friend as treasured as the women with whom she flies. Then one fateful day, she gets caught in the air over Pearl Harbor just as the bombs begin to fall, and suddenly, nowhere feels safe.

Alix St. Pierre. An unforgettable name for an unforgettable woman. She grew up surrounded by Hollywood glamor, but, as an orphan, never truly felt part of that world. In 1943, with WWII raging and men headed overseas to fight, she lands a publicity job to recruit women into the workforce. Her skills—persuasion, daring, quick-witted under pressure—catch the attention of the U.S. government and she finds herself with an even bigger assignment: sent to Switzerland as a spy. Soon Alix is on the precipice of something big, very big. But how far can she trust her German informant…?

Jende Jonga, a Cameroonian immigrant living in Harlem, has come to the United States to provide a better life for himself; his wife, Neni; and their six-year-old son. In the fall of 2007, Jende can hardly believe his luck when he lands a job as a chauffeur for Clark Edwards, a senior executive at Lehman Brothers. Clark demands punctuality, discretion, and loyalty - and Jende is eager to please. Clark's wife, Cindy, even offers Neni temporary work at the Edwardses' summer home in the Hamptons.

Ana Kaminski is pushed through the iron gates of Auschwitz beside her frightened young friend Ester Pasternak. As they reach the front of the line, Ana steps forward and quietly declares herself a midwife--and Ester her assistant. Their arms are tattooed and they’re ordered to the maternity hut. Holding an innocent newborn baby, Ana knows the fate of so many are in her hands and vows to do everything she can to save them.

In late March 1944, as Stalin’s forces push into Ukraine, young Emil and Adeline Martel must make a terrible decision: Do they wait for the Soviet bear’s intrusion and risk being sent to Siberia? Or do they reluctantly follow the wolves—murderous Nazi officers who have pledged to protect “pure-blood” Germans? The Martels are one of many families of German heritage whose ancestors have farmed in Ukraine for more than a century.

Naomi Bowes lost her innocence the night she followed her father into the woods. In freeing the girl trapped in the root cellar, Naomi revealed the horrible extent of her father’s crimes and made him infamous. No matter how close she gets to happiness, she can’t outrun the sins of Thomas David Bowes. Now a successful photographer living under the name Naomi Carson, she has found a place that calls to her, a rambling old house in need of repair, thousands of miles away from everything she’s ever known.