One of BookBub's best historical novels of the year and Oprah magazine's buzziest books of the month. From the New York Times bestselling author of Mrs. Lincoln's Dressmaker, an enthralling historical saga that recreates the danger, romance, and sacrifice of an era and brings to life one courageous, passionate American-Mildred Fish Harnack-and her circle of women friends who waged a clandestine battle against Hitler in Nazi Berlin. After Wisconsin graduate student Mildred Fish marries brilliant German economist Arvid Harnack, she accompanies him to his German homeland, where a promising future awaits. In the thriving intellectual culture of 1930s Berlin, the newlyweds create a rich new life filled with love, friendships, and rewarding work-but the rise of a malevolent new political faction inexorably changes their fate. As Adolf Hitler and his Nazi Party wield violence and lies to seize power, Mildred, Arvid, and their friends resolve to resist. Mildred gathers intelligence for her American contacts, including Martha Dodd, the vivacious and very modern daughter of the Us ambassador. Her German friends, aspiring author Greta Kuckoff and literature student Sara Weitz, risk their lives to collect information from journalists, military officers, and officials within the highest levels of the Nazi regime.