Uyuyana Kadar

Nicole Kidman

Christine

Colin Firth

Ben

Mark Strong

Dr. Nasch

Ben Crompton

Warehouse Caretaker

Anne-Marie Duff

Claire

Adam Levy

Ben

Gabriel Strong

Boy on Bike

Flynn MacArthur

Boy in Dream

Dean-Charles Chapman

Adam

Jing Lusi

Nurse Kate (uncredited)

Rosie MacPherson

Emily (uncredited)

Steve Munroe

Warehouse Worker (uncredited)

Kevin Hudson

Man on Bike (uncredited)

Samantha Kelly

Nurse with Austrian Accent (uncredited)

Nick Turner

Claire's Friend (uncredited)

Llewella Gideon

Psychiatric Nurse (uncredited)