When the Boat Comes In S03E14 - High Life and Hunger

Isobel's reactionary father tries to ban her from working at the clinic. He is Bill's wholesaler and threatens to cut off his credit. Billy and Bill argue and Bill suffers a fall. Jack visits Dixon who sends him away. Jack employs a group of homeless unemployed, including upper class con man High Life DeVere, to help him catch the person threatening the duke. He discovers it is Dixon.