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ჯონ კასავეტესი as Dr. Sam Cordell |
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John Ireland as Hank Walden |
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Helen Hughes as Agatha Galen |
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Kerrie Keane as Laura Kincaid |
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Erin Noble as Jenny Cordell |
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Duncan McIntosh as Tim Galen |
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Harvey Atkin as Joe Prescott |
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Harry Ditson as Lt. Drivas |
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Mitch Martin as Mandy Pullman |
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Matt Birman as Roy Seeley |
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Beverly Cooper as Pru Keaton |
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Brian Young as Charlie Prescott |
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Barbara Franklin as Mrs. Pullman |
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Neil Dainard as Ernie Barnes |
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Jennifer Leak as Deena Ferrin |
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Denise Fergusson as Carolyn Davies |
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Helene Udy as Sally Harper |
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Michelle Davros as Jane Barnes |
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Mary Pirie as Marge (uncredited) |
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Bruce Dickinson as Samson Lead Singer (uncredited) |
| Production | Marc Boyman | Producer |
| Production | John M. Eckert | Producer |
| Production | Stephen J. Friedman | Executive Producer |
| Sound | Stanley Myers | Music |
| Camera | Albert J. Dunk | Director of Photography |
| Editing | George Appleby | Editor |
| Production | Deirdre Bowen | Casting |
| Production | Clare Walker | Casting |
| Art | Edwin Watkins | Production Design |
| Art | Elinor Fairless Hawksley | Art Direction |
| Art | Susan Longmire | Art Direction |
| Art | Hilton Rosemarin | Set Decoration |
| Costume & Make-Up | James Kielev | Hairstylist |
| Costume & Make-Up | Katherine Southern | Makeup Supervisor |
| Costume & Make-Up | Maureen Sweeney | Special Effects Makeup Artist |
| Production | Mary Kahn | Production Manager |
| Directing | Louise Casselman | Assistant Director |
| Directing | Robert Wertheimer | Assistant Director |
| Directing | John Hough | Director |
| Writing | George Franklin | Screenplay |
| Writing | Ray Russell | Novel |
| Directing | David Hood | First Assistant Director |
| Writing | ჯონ კასავეტესი | Screenplay |
| Art | Drew Struzan | Art Designer |
