Production began in May 1953, with an empty beer hall in Spandau as the main shooting location. Only the lead actors and director Worsley spoke English. Worsley said: "No matter what galaxy we explored, everyone spoke with a German accent. The use of German actors who could not speak English required us to use a lot of close-ups. I would stand behind the camera, correctly positioned for the actor's look, and read his or her line; the actor would then repeat the line, mimicking my pronunciation and emphasis."