Anna Seghers
Anna Seghers, the author of the novel from which this movie was adapted, was a Communist, and Wallau and Heisler were Communists in the book. In Helen Deutsch's script, their political affiliation is not given. The political thrust of the film is thus about the anti-Fascist German resistance. Refugees from Nazi Germany played many small roles, with the small uncredited bit part of a janitor played by Helene Weigel, the prominent German actress and wife of Bertolt Brecht. Hugh Beaumont has an uncredited role as a truck driver.