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.
Ginger Rogers more central role in the films' great financial successes. This was personally grating to her and had effects upon her relationships at RKO, especially with director Mark Sandrich, whose purported disrespect of Rogers prompted a sharp letter of reprimand from producer Pandro Berman, which she deemed important enough to publish in her autobiography. Rogers fought hard for her contract and salary rights and for better films and scripts. After 15 months apart and with RKO facing bankruptcy, the studio paired Fred and Ginger for another movie titled "Carefree", but it lost money. Next came "The Story of Vernon and Irene