Obsada:
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Robert Clarke
John Lawrence
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Margaret Field
Enid Elliot
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Raymond Bond
Prof. Elliot
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William Schallert
Dr. Mears
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Roy Engel
Tommy - the Constable
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David Ormont
Inspector Porter
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Gilbert Fallman
Dr. Robert Blane
-
Tom Daly
Donal - a searcher
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June Jeffery
Wife of Missing Man
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Charles Davis
Geordie - Man at Dock
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Franklyn Farnum
Sgt. Ferris - Porter's Assistant
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Pat Goldin
The Man from Planet X
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Harold Gould
Frightened villager