My Son

James McAvoy

Edmond Murray

Claire Foy

Joan Richmond

Tom Cullen

Frank

Gary Lewis

Inspector Roy

Michael Moreland

William O'Connor

Robert Jack

Alan

Owen Whitelaw

Fergus

Paul Rattray

Steven

?

Toni Frutin

Leah (voice)

?

Rosalind Sydney

Camp Manager

?

Paul Stirrat

Junior Police Officer

Andrew John Tait

Roadblock Cop

?

Max Wilson

Ethan Murray