"An expedition into the interior of Papua New Guinea comes across a tribe of ape-like people who may or may not be ancestors of early man."
Burt Reynolds
as Douglas Temple
Susan Clark
as Dr. Sybil Greame
Roger C. Carmel
as Otto Kreps
Paul Hubschmid
as Vancruysen
Chips Rafferty
as Father 'Pop' Dillingham
Alexander Knox
as Buffington
Pat Suzuki
as Topazia
Edward Fox
as Bruce Spofford
Wilfrid Hyde-White
as Eaton
William Marshall
as Attorney General
Rhys Williams
as Judge Draper
Mort Marshall
as Dr. Figgins
Michael St. Clair
as Tee Hee Lawrence
Booker Bradshaw
as Smoot
John Kimberley
as Epstein
James Henry Eldridge
as District Officer
Totty Ames
as Motel Manager
James Bacon
as Commenator
Gilbert Senior
as Kauni
Clarence Harris
as Siria
Burnal Smith
as Chief (as Burnal "Custus" Smith)
John Woodcock
as Spigget
Newt Arnold
as Inspector Mimms (as Newton D. Arnold)
Wendell Baggett
as Reverend Holzapple
Michael Preece
as Nayler (as Mike Preece)
Charles Washburn
as Papuan
Cliff Bell Sr.
as Worker
Alex Gradussov
as Russian Delegate
Saul David
as Berl Tanen
Bernard Pike
as Asssociate Judge
Eduard Fuchs
as Israeli Delegate (as Eddie Fuchs)
Jim Alexander
as Reporter
Gordon Douglas
Director
John R. McLean
Second Unit Director of Photography
Martin Fink
Associate Producer
Stanley Wilson
Music Supervisor
Ronald Pierce
Sound
Albert Whitlock
Visual Effects
Evelyn Coffey
Hairstylist
John Keith McCarthy
Technical Advisor
Waldon O. Watson
Frank H. Wilkinson
Bill Lukather
Assistant Director
Robert "Buzz" Henry
Second Unit Director
Richard Kuhn
Title Graphics
Nelson Gidding
Screenplay
Lee Lukather
Production Manager
Producer
Vercors
Novel
Edith Head
Costume Design
Editor
Hilyard M. Brown
Production Design
George Milo
Set Decoration
Oliver Nelson
Original Music Composer
John W. Hyde
Jack H. Young
Makeup Artist
Robert C. Moreno
Director of Photography
Bud Westmore