Lt. Mellie Blake is looking forward to beginning her training as a flight nurse. She is not looking forward to writing a letter to a man she’s never met - even if it is anonymous and part of a morale-building program. Lt. Tom MacGilliver, an officer stationed in North Africa, welcomes the idea of an anonymous correspondence - he’s been trying to escape his infamous name for years. As their letters crisscross the Atlantic, Tom and Mellie develop a unique friendship despite not knowing the other’s true identity. When both are transferred to Algeria, the two are poised to meet face-to-face for the first time.

In 1944, American naval officer Lt. Wyatt Paxton arrives in London to prepare for the Allied invasion of France. He works closely with Dorothy Fairfax, a "Wren" in the Women's Royal Naval Service. Dorothy pieces together reconnaissance photographs with thousands of holiday snapshots of France - including those of her own family's summer home - in order to create accurate maps of Normandy. Maps that Wyatt will turn into naval bombardment plans. As the two spend concentrated time together in the pressure cooker of war, their deepening friendship threatens to turn to love.

Munich, 1938. Evelyn Brand is an American foreign correspondent as determined to prove her worth in a male-dominated profession as she is to expose the growing tyranny in Nazi Germany. To do so, she must walk a thin line. If she offends the government, she could be expelled from the country - or worse. If she fails to truthfully report on major stories, she'll never be able to give a voice to the oppressed - and wake up the folks back home.

As the Nazis march toward Paris in 1940, American ballerina Lucie Girard buys her favorite English-language bookstore to allow the Jewish owners to escape. Lucie struggles to run Green Leaf Books due to oppressive German laws and harsh conditions, but she finds a way to aid the resistance by passing secret messages between the pages of her books.

When the Germans march into Denmark, Baron Henrik Ahlefeldt exchanges his nobility for anonymity, assuming a new identity so he can secretly row messages for the Danish Resistance across the waters to Sweden. American physicist Dr. Else Jensen refuses to leave Copenhagen and abandon her research-her life's dream. While printing resistance newspapers, she hears stories of the movement's legendary Havmand-the merman-and wonders if the mysterious and silent shipyard worker living in the same boardinghouse has something to hide.

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.

Daisy Wilder prefers the company of horses to people, bare feet and salt water to high heels and society parties. Then, in the dizzying aftermath of the attack on Pearl Harbor, Daisy enlists in a top secret program, replacing male soldiers in a war zone for the first time. Under fear of imminent invasion, the WARDs guide pilots into blacked-out airstrips and track unidentified planes across Pacific skies. But not everyone thinks the women are up to the job, and the new recruits must rise above and work side by side despite the resistance and heartache they meet along the way.

At the height of World War II, the British Air Transport Auxiliary need help. A group of young women volunteer for action, but the perils of their new job don’t end on the tarmac. Things are tough in the air, but on the ground their abilities as pilots are constantly questioned. There is friction from the start between the new recruits. Spirited American Lizzie turns heads with her audacity, but few can deny her flying skills. She couldn’t be more different from shy, petite Ruby, who is far from diminutive in the sky. It falls to pragmatic pilot May to bring the women together.

London, 1941. The Blitz. When a Royal Navy memo arrives at head office, requesting female recruits to sign up as motorcycle dispatch riders, delivering highly classified orders across the country, three women jump at the chance to sign up for the most dangerous jobs in London.

Peggy Serrano couldn’t wait for her best friend to come home from the war. But the Jimmy Barnett who returns is much different from the Jimmy who left, changed so drastically by his experience as a medic in Europe that he can barely function. When he attempts the unthinkable, his parents check him into the VA hospital. Peggy determines to help the Barnetts unravel what might have happened to send their son over the edge. She starts by contacting Jimmy’s war buddies, trying to identify the mysterious woman in the photo they find in Jimmy’s belongings.

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.

When Hazel is given the chance to parachute into Nazi-occupied France, she seizes the opportunity to do more for the British war effort than file paperwork. Alongside her childhood friend, French-born Rose, she quickly rises up the ranks of the freedom fighters. For Rose, the Resistance is a link to her late husband, and a way to move forward without him. What starts out as helping downed airmen becomes a bigger cause when they meet Sophia, a German escapee and fierce critic of Hitler who is wanted by the Gestapo.

November, 1941. She’s never even seen the ocean before, but Eva Cassidy has her reasons for making the crossing to Hawaii, and they run a lot deeper than escaping a harsh Michigan winter. Newly enlisted as an Army Corps nurse, Eva is stunned by the splendor she experiences aboard the steamship SS Lurline; even more so by Lt. Clark Spencer, a man she is drawn to but who clearly has secrets of his own. But Eva’s past - and the future she’s trying to create - means that she’s not free to follow her heart.

Claire Powell’s life is turned upside down when her beloved husband admits to a “near affair.” But when Stephen accepts a partnership with an Atlanta law firm without consulting her and buys a historic Southern home sight-unseen―it pushes their already-fractured marriage to the breaking point. Claire’s world spirals, and she soon finds herself in a marriage she no longer wants, in a house she never asked for.

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.