Will & Grace (1998)

S3E17 Cheaters (2)

Grace is furious when she spots Will's unfaithful father cozying up to a stunning stranger. Her anger intensifies when she shares the news with Will, who surprisingly chooses to ignore the reality. Meanwhile, Karen misinterprets Grace's situation and starts to believe that her husband Stan might be cheating on her, prompting her to take matters into her own hands to settle the score.