Billion Dollar Brain
A former British spy stumbles into in a plot to overthrow Communism with the help of a supercomputer. But who is working for whom?
Michael Caine
Harry Palmer
Karl Malden
Leo Newbigen
Ed Begley
General Midwinter
Oskar Homolka
General Stok
Françoise Dorléac
Anya
Guy Doleman
Colonel Ross
Vladek Sheybal
Dr. Eiwort
Milo Sperber
Basil
Janos Kurutz
Latvian Gangster
Alexei Jawdokimov
Latvian Gangster
Paul Tamarin
Latvian Gangster
Izabella Telezynska
Latvian Gangster
Mark Elwes
Birkenshaw
Stanley Caine
GPO Special Delivery Boy
Susan George
Russian Girl on Train
Miki Iveria
Russian Woman on Train
Jill Mai Meredith
Russian Girl on Train
John Brandon
Jim
Tony Harwood
Macey
Michael Stayner
Scientist
Donald Sutherland
Scientist at Computer
George Roubicek
Edgar
Brandon Brady
Chief of Security
Fred Griffiths
Taxi Driver
Gregg Palmer
1st Dutch Businessman
John Herrington
2nd Dutch Businessman
Hans De Vries
3rd Dutch Businessman
Alex Marchevsky
Russian Radar Operator
Peter Forest
2nd Russian Radar Operator
Reed De Rouen
Observer
Frederick Schrecker
Old Man on Train
Dolly Brennan
Old Woman in Gangster's Hut
Bill Mitchell
Guard at Midwinter's House
Max Kirby
Shoe Shop Assistant
Steve Emerson
Russian Plainclothesman
Mark Moss
Russian Plainclothesman
Gertan Klauber
Dr. Kaarna (uncredited)
Harry Fielder
Cowboy at Barndance (uncredited)