Paddy Considine as Mr. Whicher

Olivia Colman as Susan Spencer

Paul Longley as Constable

Andy Gathergood as Sergeant Parker

William Beck as Chief Inspector 'Dolly' Williamson

Tim Pigott-Smith as Commissioner Mayne

James Wilson as Pickpocket Youth

Shaun Dingwall as Inspector George Lock

Angela Terence as Charlotte

Christopher Harper as Dr. Beattie

Justine Mitchell as Sister Anne

Justin Edwards as Reverend Marlow

Mark Kempner as Toby Boyle

Brett Allen as Landlord

Tom Padley as Pub Bystander

Neal Barry as Finch

Billy Postlethwaite as Stephen Gann

Mark Bazeley as Thomas Gann

Alistair Petrie as Dr. Casement

Sean Baker as Joshua Gann

Sam Barnard as Robert

Jody Halse as Clarence Shaw

Carolyn Tomkinson as Creed's Woman

Nick Caldecott as Dr. Drake