British agent Alec Leamas refuses to come in from the cold war during the 1960s, choosing to face another mission, which may prove to be his final one.
An American destroyer captain is determined to confront a Soviet submarine caught violating territorial waters. Perhaps too determined.
John Preston is a British agent with the task of preventing the Russians detonating a nuclear explosion next to an American base in the UK. The Russians are hoping this will shatter the 'special relationship' between the two countries.
An American scientist publicly defects to East Germany as part of a cloak and dagger mission to find the solution for a formula resin and then figuring out a plan to escape back to the West.