French countryside, Present Day: Blythe Bricard is the daughter of famous fashion muses but that doesn't mean she wants to be one. She turned her back on that world, and her dreams, years ago. Fate, however, has a different plan, and Blythe will discover there is more to her iconic mother and grandmother than she ever knew.

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…?

England, 1918. Armistice Day should bring peace into Leonora's life. Rather than secretly making cosmetics in her father's chemist shop to sell to army nurses such as Joan, her adventurous Australian friend, Leo hopes to now display her wares openly. Instead, Spanish flu arrives in the village, claiming her father's life. Determined to start over, she boards a ship to New York City. On the way she meets debonair department store heir Everett Forsyth....

England, 1939: The Penrose sisters couldn't be more different. Skye is a daring and brash pilot, and Liberty is the one to defy her at every turn. Even if women aren't allowed in the Royal Air Force, Skye is determined to help the war effort. She's thrilled when it reunites her with her childhood soul mate, Nicholas. She's less thrilled to learn Nicholas is now engaged to an enigmatic Frenchwoman named Margaux Jourdan.

Irene Steele shares her idyllic life in a beautiful Iowa City Victorian house with a husband who loves her to sky-writing, sentimental extremes. But as she rings in the new year one cold and snowy night, everything she thought she knew falls to pieces with a shocking phone call: her beloved husband, away on business, has been killed in a helicopter crash. Before Irene can even process the news, she must first confront the perplexing details of her husband's death on the distant Caribbean island of St. John.