Espionage Thriller Novels - The Ipcress File (Len Deighton)

An absolute classic that made Michael Caine's name. Sue Lloyd and Gordon Jackson co-star, Sidney J. Furie directs.  'Brainwashing' was a word in everyday use, and the Russian threat was ominpresent. It was rather one-dimensional when compared to modern productions such as Tinker, Tailor, Soldier, Spy, but nowadays audiences are credited with a little more intelligence and refinement - or are they? This is the US trailer, courtesy MCA.