Die unsichtbare Front

The Invisible Front (German: Die unsichtbare Front) is a 1932 German spy thriller film directed by Richard Eichberg and starring Trude von Molo, Karl Ludwig Diehl, Veit Harlan and Paul Hörbiger. The story was written by Robert A. Stemmle, Curt Siodmak and Max W. Kimmich, who also presented the idea to this film to his colleagues. It was made at the Johannisthal Studios in Berlin and on location in Hamburg. The film's sets were designed by the art directors Artur Günther and Willi Herrmann.

The location shooting started on 7 October 1932, while the studio shooting began only two weeks later, on 21 October 1932. The final movie passed censorship on 22 December 1932 and made its debut just a day later in Berlins Capitol cinema.[1]