Channel 4 announces cast for new drama Screw
Nina Sosanya (His Dark Materials) leads the cast as Leigh, the head of the team of 'screws' formally known as prison officers, who has devoted her life to the all-male prison and its inmates. Working on an overpopulated wing and having to battle against broken bureaucracy and short-term thinking, Leigh works hard to keep her inmates in line and support them when they need it. However, to her work team, she remains an enigma, with her own dark secrets that could cost her more than her job if they were ever discovered.