Follow the defection of notorious British intelligence officer and KGB double agent, Kim Philby, through the lens of his complex relationship with MI6 colleague and close friend, Nicholas Elliott.
Guy Pearce
Kim Philby
Damian Lewis
Nicholas Elliott
Anna Maxwell Martin
Lily Thomas
Stephen Kunken
James Jesus Angelton
Adrian Edmondson
Sir Roger Hollis
Nicholas Rowe
Sir Anthony Blunt
