Prudence and the Pill (1968)

Prudence Hardcastle navigates the complexities of birth control in this comedic caper. While she and her sister-in-law rely on the pill, a mysterious figure has been tampering with their supply, replacing it with aspirin. As suspicions arise, Prudence finds herself questioning a motley crew of potential culprits, including her teenage niece, the maid, the chauffeur, and even her husband, Gerald. With each twist and turn, the plot thickens, leading Prudence on a chaotic journey to uncover the truth behind the pill swap and its implications for her family.