Exile delves into dark family secrets and one man's mission to unlock them, while he struggles with his father's deteriorating mental health. Tom Ronstadt (John Simm) returns to his hometown after 18 years away. As the reasons for his exile emerge, Tom begins to unpack the scandal his father (Jim Broadbent) has been hiding for decades. Also starring Olivia Colman. "Riveting thriller" -Radio Times.