Filled with grief after the death of her best friend Patty, Martha is determined to uncover the truth of Patty's final hours, and drags Viv along with her on a wild goose chase that ends in the last place Martha expected. Elena's troubles are compounded with the arrival of her brother. When he discovers that being in Stanton House has nothing to do with having tuberculosis, Elena is consumed with shame and makes a life-threatening decision. Keen to impress his new boss, Bowditch joins Andrew for a night out on the town. Matron suppresses her niggling doubts about the baby switch while Joan finds her feet as a single stay-at-home mother.