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 amicable, both wanted to explore new avenues. Rogers was interested in more dramatic roles than those she was offered with Astaire. Meanwhile, Astaire, who worked with many dancers throughout his career, no longer wanted to be paired with one permanent partner. Despite several successful films, RKO was facing bankruptcy. Due to the high cost and low profit of recent Astaire-Rogers vehicles, along with the stars' mutual desire to branch out, RKO announced the end of the on-screen partnership. Their farewell film was a musical biography of ballroom dancers Vernon and Irene Castle. When Astaire and Rogers filmed the last dance