Behind-the-scenes Production of Guarding the Rhine

The famous female screenwriter Lillian Hallman's Broadway play has been put on the screen, which is the first American literary work to expose Nazi forces. In the film, the shadow of Nazi spies is everywhere, creating a sense of terror. The film reflects the anti-fascism of the American people in wartime from the psychological level, and reminds the audience that "spies are around you" with touching stories, which can be said to be an art policy film.