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, Nicola Walker, Adeel Akhtar, Lesley Manville, Owen Teale, Georgina Rich, Eddie Marsan, Turlough Convery, Sorcha Cusack, Steve Nicolson, Michael Maloney, Jim Norton, Josef Altin