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In the RKO programmer You Can't Fool Your Wife, Lucille Ball gets mixed up in a storyline that would have been right at home on her future TV series I Love Lucy. Feeling neglected by her husband Andrew (James Ellison), drab housewife Clara Hinklin (Ball) walks out on him, much to the delight of her busybody mother-in-law (Emma Dunn). Realizing that she's still in love with her husband, Clara undergoes a glamour treatment, re-emerging in the guise of Latin American charmer Mercedes Vasquez. Reunited with her husband at a masquerade party, Clara tries to win him back by continuing her pose as the alluring Mercedes. The question: Does Andrew fall back in love with Clara, or is he merely smitten by her seductive alter ego?