Taken from the 1907 comedy play by Georges Feydeau, A Flea In Her Ear is a comedic sex romp about a wife suspicious of her husband's activities away from home. Gabrielle (Rosemary Harris) is convinced her attorney husband Victor (Rex Harrison) is seeing another woman because of his inattention to her amorous needs. Gabrielle sets up a meeting with her husband at a bordello-hotel, and he is completely unaware that the woman he is going to meet will be his own wife. She soon discovers just who is being unfaithful to their wives after meeting a number of lovers and both faithful and unfaithful husbands. Louis Jourdan and Rachel Roberts also star in this light situation comedy containing turn-of the-century-sensibilities that appear somewhat dated in 1968.