The Fourth Protocol (1987)

Led by Kim Philby, Plan Aurora is a plan that breaches the top-secret Fourth Protocol and turns the fears that shaped it into a living nightmare. A crack Soviet agent, placed under cover in a quiet English country town, begins to assemble a nuclear bomb, whilst an MI5 agent attempts to prevent its detonation.

Genres: Action, Thriller

What to watch after The Fourth Protocol

• Funeral in Berlin (1966) — Same subject: cold war
• For Your Eyes Only (1981)
• Enigma (2001) — Same feel: tense, suspenseful
• Sleuth (2007) — Michael Caine appears in both
• Telefon (1977) — Same subject: secret agent
• The November Man (2014) — Pierce Brosnan appears in both