Scottish actress Kelly Macdonald was unforgettable in No Country for Old Men, the intensity of her performance as a woman trapped is indelible. And the tension doesn’t let up as Macdonald plays an extremely complex Detective Chief Inspector Joanna Davidson in BritBox’ Line of Duty S6, meaning she could swing either way, abuser or abused. Another season of Jed Mercurio’s excellent series! What She Said’ Anne Brodie spoke with Macdonald from the UK.