Kate Winslet said she had to 'invent trauma' to take on the role of Mare Sheenan, a working-class, small-town Pennsylvania detective whose world crumbles as she begins investigating a murder on the forthcoming HBO show, Mare of Easttown. Search within: Kate Winslet said she had to 'invent trauma' to take on the role of Mare Sheenan, a working-class, small-town Pennsylvania …