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 commitments with the punishing rehearsal schedules of Astaire, who made at most two films in any one year. In 1986, shortly before his death, Astaire remarked, "All the girls I ever danced with thought they couldn't do it, but of course they could. So they always cried. All except Ginger. No no, Ginger never cried". John Mueller summed up Rogers' abilities as: "Rogers was outstanding among Astaire's partners, not because she was superior to others as a dancer, but, because, as a skilled, intuitive actress, she was cagey enough to realize that acting did not stop when dancing began ...