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Covert officer 'Lizzie' meets suspect Colin Stagg face-to-face and attempts to earn his trust. But as the weeks pass, the pressure she's under starts to take its toll.
Niamh Algar
Lizzie James
Sion Daniel Young
Colin Stagg
Harry Treadaway
Keith Pedder
Eddie Marsan
Paul Britton
Rochenda Sandall
Lucy
Nathaniel Martello-White
Baz