 Spence presents Sean and his sister, Jenna, with some unsavoury treatment options for Sean s young niece, putting Spence and Sean at odds with each other. Deciding what to do would be challenging under any circumstances but the family harbours a secret that weighs even more heavily on their choice. Jo, an old university and nursing friend of Cate s, arrives in the ED. She s well travelled, likeable and a livewire and adds some colour to the day. Cate is pleased to see her and by the day s end Jo s here to stay, for a while at least. Frank returns to work just as unexpectedly as when he disappeared. It s an unusually cheerful Frank and his coworkers start to suspect that he plans on leaving the ED. When he insists that the team head off to Cougars Bar at shift s end, he makes them even more suspicious. An affair goes very wrong when a woman is injured in a backyard spa accident, forcing Dan to reconsider his tryst with Bianca.