David Janssen
Steve Randall
James Whitmore
George Wheeler
Florinda Bolkan
Angela Monti
Eddie Albert
Ogden Towery
Geraldine Chaplin
Naomi Dunn
Hurd Hatfield
Cedric Plummer
John Huston
Nathan Randall
John McEnery
Florian Knight
Ron Moody
LeBrun
Diana Muldaur
Claire Randall
Kate Mulgrew
Tony Nicholson
Janice Rule
Barbara Randall
Martha Scott
Sarah Randall
Nicol Williamson
Maertin de Vroome
David Ackroyd
Tom Carey
Laura Betti
Maria
Bo Brundin
Heldering
Donald Moffat
Henri Aubert
Nehemiah Persoff
Abbot Petropolous
Catherine Burns
Lori Cook
Nicolas Coster
Peter Ajemian
Roland Culver
Dr. Jeffries
Tessie O'Shea
Self
Walter Gotell
Hennig
Alexa Kenin
Judy Randall
Jon Korkes
Thad Crawford
Allan Miller
Dr. Oppenheim
Lynn Farleigh
Valerie Hughs
Christopher Lloyd
Hans Bogardus
Mario Scaccia
Agusto Monti
John van Dreelen
Dr. Fass
Alexander Scourby
Narrator (voice)
Jonathan Banks
Young LeBrun
Directing
Richard Lang
Director
Maurice Marks
Second Assistant Director
Gianni Cozzo
First Assistant Director
George Goodman
First Assistant Director
Writing
S.S. Schweitzer
Writer
Richard Berg
Writer
Richard Fielder
Writer
Robert L. Joseph
Writer
Irving Wallace
Novel
Production
Nick Farnes
Production Manager
William P. Owens
Production Manager
Richard Berg
Executive Producer
Judith Holstra
Casting
Wim Lindner
Production Manager
Allan Marcil
Associate Producer
Rose Tobias Shaw
Casting
Orin Kennedy
Location Manager
Chris Christenberry
Production Manager
Mario Pisani
Production Manager
Piero Amati
Unit Manager
David Manson
Producer
Enzo Sisti
Accountant
Bob Markell
Executive Producer
Roy Carrington
Production Coordinator
Charles W. Fries
Executive Producer
Sound
Peter Sutton
Sound Mixer
Alex North
Original Music Composer
Victor Dekker
Assistant Sound Engineer
Don Wortham
Boom Operator
John Fresco
Music Supervisor
Richard Dwan Jr.
Sound Editor
John Mick
Music Editor
Crew
Conrad E. Palmisano
Stunts
Conrad E. Palmisano
Stunt Coordinator
Conrad E. Palmisano
Stunt Double
Jim Dowdall
Stunts