Jodie Whittaker
as Sandy Grimes
Paul Rhys
as Aldrich Ames
Stuart Milligan
as Arthur O'Neill
Christina Cole
as Louisa Tilton
Lex Shrapnel
as Mitch Weaver
Julian Ovenden
as Gary Grimes
Harriet Walter
as Jeanne Vertefeuile
Ralph Brown
as Lawrence Winston
Amelia Clarkson
as Kelly Grimes
Trystan Gravelle
as John P
Nicholas Woodeson
as Volkov