As the Iranian revolution reaches a boiling point, a CIA 'exfiltration' specialist concocts a risky plan to free six Americans who have found shelter at the home of the Canadian ambassador.
In the bleak days of the Cold War, espionage veteran George Smiley is forced from semi-retirement to uncover a Soviet mole within his former colleagues at the heart of MI6.
Special agent Orson Fortune and his team of operatives recruit one of Hollywood's biggest movie stars to help them on an undercover mission when the sale of a deadly new weapons technology threatens to disrupt the world order.