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John Laurie as Mr Potter |
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Hector Ross as Inspector Greenway |
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Molly Raynor as |
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Catherine Campbell as |
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Jack Stewart as |
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Charles Lloyd Pack as Hotel Manager |
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Derek Sidney as |
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Peter Bathurst as Colonel |
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Vernon Gibb as |
| Directing | John Wall | Director |
| Directing | Oscar Burn | Director |
| Production | Edwin J. Fancey | Producer |
| Production | Frank Bevis | Production Manager |
| Crew | Cedric Williams | Lighting Camera |
| Editing | Bob Higgins | Editor |
| Editing | Jack Wilman | Editor |
| Costume & Make-Up | Peter Armsten | Makeup Artist |
| Art | Don Russell | Art Direction |
| Directing | Jimmy Shingfield | Assistant Director |
