It's March, 1943. World War II rages across the globe, and twenty-five-year-old Nora Lindstrom is about to take a huge leap of faith. One of the few women in the male-dominated field of physics, she travels to an undisclosed destination to undertake a vital, top-secret project that the government insists could help the Allies win the war.

At eighteen, Mary Trask is ready to put high school and the boy who wants to marry her in her rearview mirror. But what alternative could the future hold for the dyslexic daughter of a train conductor? When a cousin in Tennessee provides Mary with a cryptic job opportunity, she jumps at the chance to rewrite her life.

Nora and Mary are drawn together under impossible circumstances. As the fate of the world hangs in the balance, they find solace in their love for each other. But in a place where secrecy is paramount, their relationship is forever changed by the consequences of secrets well kept.

In this new historical fiction novel, award-winning author Lynn Ames returns us to a time where the contribution of women was often overlooked and the casualties of war were not always limited to the battlefield.