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Stuart Whitman as Dr. McCarter Purvis |
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Sandy Dennis as Dr. Enid Bingham |
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Burl Ives as T.M. Trask |
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Tom Harvey as McBride |
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Robert Goodier as Dr. Wilfrid Morton |
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Ron Hartmann as Dr. John Emmett |
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Jack Creley as Dr. George Simmons |
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Allen Doremus as Dr. Carl Bryant |
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Kenneth James as Clinton |
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Joseph Shaw as Dr. Franz Heinemann |
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Clem Hambourg as Pianist |
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Harvey Fisher as Copter Pilot |
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Robert Warner as Guard #1 |
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John S. Davies as Doctor |
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V.K. Saini as V.K. Saini |
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George Pyfrom as Surgeon #2 |
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Claudia Koropecki as Surgeon #3 |
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Nina Keogh as Trask's Nurse (uncredited) |
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Robert Mann as Guard #3 |
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James Forrest as Guard #4 |
| Directing | John Trent | Director |
| Writing | Henry Denker | Writer |
| Production | Henry Denker | Executive Producer |
| Production | Edgar J. Scherick | Executive Producer |
| Production | Terence Dene | Producer |
| Editing | Michael Manne | Editor |
| Editing | Ron Wisman | Editor |
| Crew | Marc Champion | Cinematography |
| Sound | Dolores Claman | Music |
| Costume & Make-Up | James Keeler | Hairstylist |
| Production | Pamella Barney | Casting |
| Sound | John Aldred | Sound Recordist |
| Sound | Russel Heise | Sound Mixer |
| Production | Tony Lucibello | Assistant Production Manager |
| Lighting | Chris Holmes | Gaffer |
| Art | Earle Fiset | Set Dresser |
| Sound | Ralph Brunjes | Sound Editor |
| Art | Jack McAdam | Art Direction |
| Directing | Alan Simmonds | Assistant Director |
| Art | Wilf Culley | Property Master |
| Crew | Mogens Gander | Cinematography |
| Costume & Make-Up | Ken Brooke | Makeup Artist |
| Editing | Françoise Franque | Negative Cutter |
| Directing | Brian Walker | Assistant Director |
| Sound | Ron Wisman | Sound Editor |
| Camera | László Szilvássy | Still Photographer |
| Costume & Make-Up | Roger Palmer | Costume Design |
| Camera | Ron Gillham | Key Grip |
| Editing | Honor Griffith | Assistant Editor |
| Directing | Ruby Renaut | Continuity |
| Production | Marilyn Stonehouse | Production Manager |
| Sound | Roy Smith | Orchestrator |
