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Hayley Mills as Samantha Miller |
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Gary Collins as Howard Heston |
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Joyce Carey as Liza Meredith |
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David Warbeck as Robert Miller |
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Jeremy Bulloch as Tom Manners |
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Jonathan Elsom as John Stratford |
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Ronald Mayer as Dr. Lambert |
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Barrie Fletcher as Det. Serg. Sullivan |
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Richard Beaumont as Heston as a Child |
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Candida Brown as Samantha as a Child |
| Sound | Laurie Johnson | Music |
| Directing | Peter Jefferies | Director |
| Writing | Brian Clemens | Original Story |
| Writing | Terence Feely | Writer |
| Production | Cecil Clarke | Executive Producer |
| Production | John Sichel | Producer |
| Editing | Mary Forrest | Editor |
| Editing | John Hawkins | Editor |
| Production | Stanley Mills | Production Designer |
| Costume & Make-Up | Marie Roche | Makeup Artist |
| Sound | Len Penfold | Sound |
| Camera | Tony Mander | Camera Operator |
| Camera | Tony Whitcutt | Camera Operator |
| Costume & Make-Up | K. Conry-Halley | Wardrobe Master |
