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Patrick Macnee as Derek Longbow |
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Edward Woodward as Dr. Holstrom |
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Alexander Davion as Tony Seymore |
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Peter Cushing as Dr. Walter Goodrich |
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Johnny Sekka as Bob Kirby |
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Madeleine Hinde as Penelope |
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William Mervyn as Marc Honeydew |
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Patrick Mower as Richard Fountain |
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David Lodge as Colonel |
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Imogen Hassall as Chriseis |
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Valerie Van Ost as Don's Wife |
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Françoise Pascal as Girl at Orgy (uncredited) |
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Marianne Stone as Cheerful Lady at Party (uncredited) |
| Directing | Robert Hartford-Davis | Director |
| Directing | Julian More | Director |
| Production | Peter Newbrook | Executive Producer |
| Sound | Robert Richards | Music |
| Art | George Provis | Production Design |
| Sound | Tony Dawe | Sound Recordist |
| Sound | Don Deacon | Dialogue Editor |
| Sound | Dennis Whitlock | Sound Recordist |
| Camera | Ronnie Maasz | Camera Operator |
| Editing | Maxine Julius | Assistant Editor |
| Writing | Julian More | Screenplay |
| Production | Graham Harris | Producer |
| Camera | Desmond Dickinson | Director of Photography |
| Editing | Peter Thornton | Editor |
