THE COURIER is a true-life spy thriller, the story of an unassuming British businessman GrevilleWynne (Benedict Cumberbatch) recruited into one of the greatest international conflicts in history.   At the behest of the UK's MI-6 and a CIA operative (Rachel Brosnahan), he forms a covert, dangerous partnership with Soviet officer Oleg Penkovsky (Merab Ninidze) in an effort to provide crucial intelligence needed to prevent a nuclear confrontation  and defuse the Cuban Missile Crisis.