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Fernando Lamas as Dr. Carlos Morales |
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Arlene Dahl as Nancy Darby |
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Patricia Medina as Martha Darby |
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Francis L. Sullivan as Dr. Bristol |
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Charles Korvin as Harvey Bristol |
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Tom Drake as Dr. Roy Darby |
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John Sutton as Harvey Bristol |
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Willard Parker as Gabriel Thatch |
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Charles Evans as Judge Armstrong |
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Lester Matthews as Gen. Victor Darby |
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Roy Gordon as Dr. Tyrus |
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Lewis L. Russell as Capt. Bronson |
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Russell Gaige as McIntosh |
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Bill Walker as Priam |
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Voltaire Perkins as Dr. Crowther |
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Don Megowan as River Pirate (uncredited) |
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Walter Reed as Conspirator in Boat (uncredited) |
| Writing | Frank L. Moss | Writer |
| Writing | David Duncan | Writer |
| Directing | Edward Ludwig | Director |
| Writing | Frank Slaughter | Novel |
| Production | William H. Pine | Producer |
| Art | A. Earl Hedrick | Art Direction |
| Camera | W. Wallace Kelley | Director of Photography |
| Production | William C. Thomas | Producer |
| Editing | Howard A. Smith | Editor |
| Art | Hal Pereira | Art Direction |
| Art | Ross Dowd | Set Decoration |
| Sound | Lucien Cailliet | Original Music Composer |
| Costume & Make-Up | Эдит Хэд | Costume Design |
| Camera | Lionel Lindon | Director of Photography |
| Art | Sam Comer | Set Decoration |
| Sound | Jim Miller | Sound |
