Billion Dollar Brain is a 1967 British 'Len Deighton' Cold War espionage drama thriller film. It features Michael Caine, Karl Malden, Ed Begley, Oskar Homolka, Françoise Dorléac, Guy Doleman, and Vladek Sheybal. Harry Palmer, a former British spy stumbles into in a plot to overthrow Communism with the help of a supercomputer. But who is working for whom?