In the wake of Kim Philby’s escape to Moscow, his closest friend in Britain’s Secret Service, Nicholas Elliott, is under investigation.

Cast: Guy Pearce, Damian Lewis, Anna Maxwell Martin, Stephen Kunken, Karel Roden, Adrian Edmondson, Nicholas Rowe, Monika Gossmann, Puiu-Mircea Lăscuș, Lucy Russell, Lucy Akhurst, Anastasia Hille, Jennifer Marsala, Gershwyn Eustache Jnr, Gilly Gilchrist, Steven Elder, Thomas Arnold, Alexander Terentyev