Divorce: Ewing Style

S3, E21: Sue Ellen takes great pains to appear the perfect wife and mother in preparation for her divorce action but when J.R. realizes what she is planning, he decides to take a strong counterattack. J.R. is furious when he learns Sue Ellen has a private detective following him on his nocturnal visits and decides the best way to keep her from leaving him with their son is to prove that Sue Ellen is drinking again.