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Rachel Clay as Sophie Miller |
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Terry Raven as Chris |
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Ronald Howard as Uncle Dick |
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Beryl Cooke as Miss Hagerty |
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Michael Balfour as Bert |
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Frederick Piper as Sam |
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Philip Latham as Schoolmaster |
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Roy Vincente as The Monster (voice) |
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Michael Wade as David Miller |
| Editing | Jack King | Supervising Editor |
| Directing | Alberto Cavalcanti | Director |
| Writing | Joy Batchelor | Writer |
| Writing | Mary Cathcart Borer | Writer |
| Production | John Halas | Producer |
| Sound | Francis Chagrin | Original Music Composer |
| Camera | Frank North | Director of Photography |
| Editing | Robert Jordan Hill | Editor |
| Production | John Workman | Production Manager |
| Sound | Dudley Plummer | Sound Recordist |
