Iona returns to the island where she was born with her teenage son to seek refuge from a violent crime in Glasgow. Iona's return exposes her tormented son, Bull, to a way of life she rejected when she left the … Ruth Negga, Douglas Henshall, Michelle Duncan, Tom Brooke, Ben Gallagher, Sorcha Groundsell, Christine Steele Added on Amazon Prime 2021-11-15.