Calificación
Reparto
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Eduardo Ciannelli
Doctor Satan
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Robert Wilcox
Bob Wayne / Copperhead
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William Newell
Speed Martin
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C. Montague Shaw
Prof. Thomas Scott
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Ella Neal
Lois Scott
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Dorothy Herbert
Alice Brent
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Charles Trowbridge
Gov. Bronson
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Jack Mulhall
Police Chief Rand
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Edwin Stanley
Col. Bevans
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Walter McGrail
Stoner
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Joe McGuinn
Gort
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Bud Geary
Hallett
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Paul Marion
Corbay
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Archie Twitchell
Ross
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Lynton Brent
Scarlett
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Ken Terrell
Corwin