Calificación
Reparto

Richard Coyle
Michael Sheldrake

Keeley Hawes
Kate Sheldrake

Toby Stephens
Peter Tremaine

Aaron Taylor-Johnson
Michael Sheldrake (age 15)

George Irving
Miller

Laura Aikman
Alison Poley

Indra Ové
Natalie

Jack Baverstock
Bruce Miller

Kate Fahy
Dr. Cowley

Joseph Friend
Michael - as a boy