Trailer
Images
 | Jared Martin as Varian |
 | Ike Eisenmann as Scott Jordan |
 | Carl Franklin as Dr. Fred Walters |
 | Katie Saylor as Liana |
 | Roddy McDowall as Dr. Jonathan Willoway |
 | Ian McShane as Sir James Camden |
 | Gary Collins as Dar-L |
 | Jason Evers as Atar |
 | Mary Ann Mobley as Rhea |
 | Mike Road as The Source (voice) |
 | Lynn Borden as Enid Jordan |
 | Scott Brady as Carl Johanson |
 | Byron Chung as George |
 | Leif Erickson as Ben Wallace |
 | Susan Howard as Eve Costigan |
 | Don Knight as Paget |
 | Jack Stauffer as Andy |
| Directing | |
| Andrew V. McLaglen | Director |
| Barry Crane | Director |
Writing | |
| Merwin Gerard | Writer |
Production | |
| Leonard Katzman | Producer |
| Bruce Lansbury | Executive Producer |
Camera | |
| Sam Leavitt | Director of Photography |
Sound | |
| Robert Prince | Music |
| Jerry MacDonald | Music Editor |
| Shinichi Yamazaki | Music Editor |
Writing | |
| Katharyn Powers | Writer |
Crew | |
| Larry Holt | Stunts |
