Mel Ferrer

as Self (archive footage)

as Self - Actor / 1st Husband (archive footage)

as Self (archive footage)

as Patriarch

as Self

as CIA Chief Frankenheimer

as Judge Michael Lengel

as Frederick

as Arthur Orloff

as Eric Brahm

as Miles Austin

as George Matthews

as Franz Bollenstein

as Carl Charnock

as Stephan Mathiesen

as Anthony Palandrini

as Garrett Hardy

as Cornelius A. Woaegen, president of GTI

as Phillip Erickson

as David Mendelssohn

as Sheriff

as General Murchison

as Anthony Durano

as Dr. Sanford

as Professor Carter

as Andreas Heggener

as Joshua

as Dr. Walker

as Radcliffe (US version)

as Vera Husband

as Dr. Sidney Coleman

as Self (archive footage) (uncredited)

as Roberto Micheli

as Colonel Stone

as King Eurich

as Dr. Paolo Brogli

as Dr. Robert Cook

as Harrison Page

as Sheriff

as Nicholas Skinner

as Professor Henry Douglas

as David

as Peseti

as Analog

as Hale Burton

as Appolonius

as Harvey Wood

as Van Gould

as Armando Della Morra

as Aurelio Morelli

as Fritz Gerlich

as Police superintendent

as District Attorney Mannino

as Mel Fields

as Massimo Oderisi

as Dalton Harvey

as Dr. Ross

as Gen. Franz von Clodius

as John Rickman

as Doctor Harrison

as Jerry Parks

as Father Neill

as Emil Radick

as Self

as French-Canadian Radio Speaker (voice) (uncredited)

as El Greco (Domenico Teotocopulo)

as Rudy DeMeyer

as Cleander

as Dr. Jekyll & Mr. Hyde (uncredited)

as Juan Bautista de La Salle

as Peter Carrington

as Maj. Gen. Robert Haines

as Philip Allan

as Andrea Di Tula

as Marco

as Stephen Orlac

as Georges Gauthier

as Leopoldo De Karnstein

as Benson Thacker

as Self

as Maj. Foster MacLain

as Robert Cohn

as Giancarlo Barandero

as Crown Prince Rudolph

as Le comte Henri de Chevincourt

as Prince Andrei Bolkonsky

as Capt. Alfred Westerman

as Don Paolo Salinas

as Arthur

as Henrik

as Self

as Paul Berthalet

as Noel, Marquis de Maynes

as Frenchy Fairmont

as Luís Bello

as Gobby

as Self - Panelist

as Dr. Scott Mason Carter

as Father Serra (uncredited)