Stellan Skarsgård
as Detective Inspector John River
Adeel Akhtar
as Detective Sergeant Ira King
Lesley Manville
as Chief Inspector Chrissie Read
Eddie Marsan
as Thomas Neill Cream
Nicola Walker
as Detective Sergeant Jackie "Stevie" Stevenson
Georgina Rich
as Rosa Fallows
Turlough Convery
as Frankie Stevenson
Owen Teale
as Detective Superintendent Marcus McDonald
Sorcha Cusack
as Bridie Stevenson
Steve Nicolson
as Jimmy Stevenson