Secret of the Blue Room (1933), set almost entirely within the walls of the grand old mansion, was in part shot on sets from James Whale's Il castello maledetto (1932), which coincidentally co-starred Gloria Stuart. According to the actress, Secret of the Blue Room recycled exterior shots from the original UFA production Geheimnis des blauen Zimmers (1932), which adds to the expressionist atmosphere of the film.
Shot in six days on a budget of just $69,000.
When Gloria Stuart's character performs "I Can't Help But Dream of You" early in the film, it is actually Stuart's voice doing the singing.
Exterior shots and Heinz Letton's song were borrowed from the 1932 German film Geheimnis des blauen Zimmers (1932) for this American version by Universal. Although Letton receives screen credit as composer, only his song (with new English lyrics) was used--there is no dramatic background score.