My Wife Went Crazy (1966)

After nearly twenty happy years of marriage, Anna and Manos find themselves in a sad but quite common predicament, as the man of the house is having a typical extramarital affair with the blonde cabaret belle, Billy. It's not that Manos has fallen out of love--he still cares a lot about his wife--it's just this crazy notion that by adding a sprinkle of spice in matrimony, one may fix the lack of romance; however, Anna already knows her husband's cheating. Determined to get Manos back on track, Anna concocts an elaborate plan and decides to put on an act, but is mere theatrics enough to salvage a marriage? In the end, wouldn't she be better off paying him back in the same coin?