Ginger Rogers Castle", but the serious plot and tragic ending resulted in the worst box-office receipts of any of their films. This was driven not by diminished popularity, but by the hard 1930s economic reality. The production costs of musicals, always significantly more costly than regular features, continued to increase at a much faster rate than admissions. Both before and immediately after her dancing and acting partnership with Fred Astaire ended, Rogers starred in a number of successful nonmusical films. "Stage Door" (1937) demonstrated her dramatic capacity, as the loquacious yet vulnerable girl next door, a tough-minded, theatrical hopeful, opposite Katharine Hepburn.
Fred Astaire and Ginger Rogers long period apart, Astaire and Rogers made only one movie together in 1938, the 80-minute "Carefree". During their time apart, Rogers appeared in the successful movie "Stage Door", while Astaire's career did not reach the same heights he had experienced with Rogers. The duo reunited, but "Carefree" marked a departure for their on-screen partnership, featuring Astaire in a role unlike his usual typecast persona, as well as less emphasis on the musical element of the film. "Carefree" was originally going to contain sequences shot in Technicolor, but RKO considered the cost prohibitive so it was filmed in black and white.