In 1945 secrets hidden at an Italian estate could prove just as vital to humanity's fate as the war efforts on the frontlines . . . if nurse Diana Bolsena can get to them first.

Tuscany, 1945. As the war in Europe ends, American Red Cross nurse Diana Bolsena finds herself separated from her unit. Unable to reconnect with the American army, she's left to survive with nothing but her spirit, her talents as a nurse, and her nightmares of the horror of war.

Determined to return to active duty in the Pacific, to earn her way back Diana begins caring for a child with disabilities on the estate of the enigmatic Signora Bugari. Amidst the ravages of war, it is a peaceful existence until a visiting German officer, Herr Adler, arrives demanding Bugari return what is rightfully his.

When a shocking murder attracts more people to the isolated estate, Diana suspects Adler's hidden secrets could affect the course of history. But who will uncover them first? And what will happen to humanity if they fall into the wrong hands?