Watch Billion Dollar Brain

Billion Dollar Brain is an espionage comedy/thriller, starring Michael Caine as ex-MI-5 agent turned private investigator Harry Palmer. He stumbles into a plot to overthrow communism, using a super computer (the Billion Dollar Brain). With his old friend Leo Newbigen, played by Karl Malden, Palmer goes from Finland to Latvia to Texas to London, never sure whom he can trust as he attempts to prevent World War III. Billion Dollar Brain is the third of five movies starring Michael Caine as Harry Palmer and is based on the Len Deighton novel of the same name.