Respected police officer John River, a gifted cop with a troubled mind, struggles to come to terms with the recent loss of a colleague, and chases a suspect across London - with tragic consequences. Now at odds with the authorities, River ends up in a precarious position as he seeks to bring closure to the mother of murdered teenager, who blames him for failing to keep his promise.

Stellan Skarsgård

John River

Nicola Walker

Jackie 'Stevie' Stevenson

Adeel Akhtar

Ira King

Lesley Manville

Chrissie Read

Owen Teale

Marcus McDonald

Georgina Rich

Rosa Fallows

Eddie Marsan

Thomas Cream

Turlough Convery

Frankie Stevenson

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