Rachel becomes increasingly frustrated with Paul after Callum's departure, while Orla and Wayne worry when Junior's infection shows no sign of clearing. I guess they'll be needing some family history, so Caoimhe will be finding out she has a half brother rather shortly. Elsewhere, Kerri-Ann worries about her lack of butterflies for Garda Maguire (she's not alone, he reminds us of a chilled trout), and Leo is happy to see a familiar face in Carrigstown. Like, a very familiar face. And Leo better enjoy the feeling that feeling of happiness, 'cause it ain't going to last.