Two scientists suspect that there is someone other than their research primates inhabiting their polar station.
Robert Culp
Robert Jones
Eli Wallach
Frank Enari
Michael C. Gwynne
Val Adams
Vic Perrin
Ryan Horner / Project Director (voice)(uncredited)
Jerrold Freedman
Director
Joyce King
Script Supervisor
Edward Rossi
Sound Effects Editor
Jon C. Andersen
Assistant Director
Kenneth L. Westcott
Property Master
Gordon Fletcher
Construction Coordinator
Herman Lewis
Sound Engineer
Kenneth Wannberg
Music Editor
Aaron Spelling
Executive Producer
Leonard Goldberg
Dave L. Love
Set Decoration
Richard Caffey
Production Manager
Christopher Knopf
Writer
Leonard J. South
Director of Photography
Ray Harp
Costume Design
Robert Monroe
Associate Producer
Rolland M. Brooks
Art Direction
Gil Mellé
Original Music Composer
Frank Westmore
Makeup Artist
Paul Junger Witt
Producer
Tony Thomas
David Berlatsky
Editor
