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Robert Clarke as John Lawrence |
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Margaret Field as Enid Elliot |
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Raymond Bond as Prof. Elliot |
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William Schallert as Dr. Mears |
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Roy Engel as Tommy the Constable |
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David Ormont as Inspector Porter |
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Gilbert Fallman as Dr. Robert Blane |
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Pat Goldin as The Man from Planet X |
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Tom Daly as Donal, a searcher |
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June Jeffery as Wife of Missing Man |
| Art | Angelo Scibetta | Art Direction |
| Production | Aubrey Wisberg | Producer |
| Writing | Aubrey Wisberg | Writer |
| Sound | Charles Koff | Original Music Composer |
| Production | Jack Pollexfen | Producer |
| Art | Byron Vreeland | Art Direction |
| Directing | Edgar G. Ulmer | Director |
| Writing | Jack Pollexfen | Writer |
| Editing | Fred R. Feitshans Jr. | Editor |
| Camera | John L. Russell | Director of Photography |
| Sound | William Randall Sr. | Sound |
| Crew | Howard Weeks | Special Effects |
| Directing | Lester D. Guthrie | Assistant Director |
| Crew | Andy Anderson | Special Effects |
| Visual Effects | Jack R. Glass | Visual Effects |
| Sound | Joel Moss | Sound |
