As well as co-starring with Sarah Parish in ITV’s recent drama Bancroft and appearing in Game of Thrones, busy Faye Marsay takes top billing in this dark revenge drama.

She plays Sarah, a young woman we first meet as a happy-go-lucky 17-year-old with a bright future.

Fast-forward 10 years and we meet Sarah again, in a dismal prison cell where she is holding two men prisoner. An edgy, complex one-off.