The star of the Broadway version of Any Wednesday was
Sandy Dennis. Headlining the 1966 film version is
Jane Fonda, who imbues her character with enough quirkiness to satisfy both herself and the endearingly mannered Ms. Dennis. Fonda plays the dippy mistress of philanderer Jason Robards, who visits his paramour only on Wednesdays (hence the title).
Dean Jones costars as the erstwhile swain who messes up Robards' routine by falling in love with Fonda. Screenwriter Julius J. Epstein does a expert job at expanding Muriel Resnick's play for the screen without robbing it of its inherent charm. ~ Hal Erickson, All Movie Guide