Neighbours S29E34 - Episode 6584

Karl and Sarah remain guilty about last night. Karl's guilt drives him to confess to Susan the secret he's been harbouring for fourteen years – that he and Sarah slept together. But when Karl confesses all to Susan, her reaction shocks him. She already knows. In her gut, she's known all along that he lied to her. They reach the sad realisation that their marriage is at an end.