S40·E265 Episode 6076 (Thu 10th Nov 2011) (Part 2)

Diane sees John on the warpath and calls Moira to warn her. Moira feels her world crumbling when she speaks to Diane and realises that John might know the truth. There's a strained atmosphere when he arrives home and her hands shake as she serves dinner. Eventually, John coldly confronts her and Moira falls apart, admitting what she has done and that she is crippled with shame.