Catherine Cawood

Catherine Cawood is a police sergeant in the Calder Valley, seen first talking a desperate man out of setting himself alight with the calm, weary authority of someone who's done this a thousand times. She runs her patch and her household with the same brisk competence, raising her grandson while her sister recovers nearby, all business and no self-pity.

Sarah Lancashire plays her without an ounce of glamour or softness, just exhaustion worn like armour, which makes every flash of tenderness or fury land harder. Sally Wainwright writes her procedural instincts and her private grief as the same muscle, so watching her work a case is watching her hold herself together.