Trailer
 | Robert Logan as T.R. Sloane |
 | Dan O'Herlihy as The Director |
 | Penelope Windust as Emma Blessing |
 | Ann Turkel as Sabina Dorffman |
 | Maggie Cooper as Chrissy Randall |
 | Ji-Tu Cumbuka as Torque |
 | Paul Mantee as James DiGiorgio |
 | Fred Sadoff as Armand Duke |
 | Clive Revill as Erik Clawson |
| Diana Webster as Mother Superior |
 | Michele Carey as Effie (voice) |
| Peter Nyberg as August Inmann |
 | Fiona Gordon as Sister Trilby |
| Tonyo Meléndez as Cuban Officer |
 | Michael Yama as Photographer |
 | Richard Lineback as U.S. Army Enlisted Man |
 | Lillian Müller as Ilse Lander |
 | Ava Lazar as Flight Attendant |
 | James Chandler as Gideon Peak Guard |
| Roger Til as Henir |
| Paula Jones as Ground Hostess |
| Connie Garrison as Model |
| William Meigs as U.S. Army General |
| Stephen Coit as Coroner |
| David Brandon as General's Aide |
 | Arthur Tovey as Scientist (uncredited) |
| Directing | |
| Lee H. Katzin | Director |
Writing | |
| Cliff Gould | Writer |
Production | |
| Cliff Gould | Producer |
| Philip Saltzman | Executive Producer |
Camera | |
| Bill Butler | Director of Photography |
Editing | |
| Jim Gross | Editor |
| Donald Hoskinson | Editor |
Art | |
| George B. Chan | Art Direction |
| Norman Newberry | Art Direction |
Crew | |
| Gregory J. Barnett | Stunt Coordinator |
