O diavolos kai i oura tou (1962)

The charming but jealous, Dina, is utterly convinced that her handsome husband, Petros, is tired of her, and what is even worse, she believes that he is a shameless adulterer. Similarly, Petros, too, is equally concerned about his spouse's unaccountable behaviour--and on top of that--he is almost certain that Dina is having an affair under his nose. As a result, both decide to pay each other back in the same coin, going to great lengths to get their relationship back on track. Can a harmless but mischievous plan save Petros and Dina's marriage?