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Joyce Taylor as Althea |
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Mark Damon as Eduardo |
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Eduard Franz as Orsini |
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Michael Pate as Bruno |
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Merry Anders as Sybil |
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Meg Wyllie as Woman |
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Dayton Lummis as Roderick, Count of Sardi |
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Walter Burke as Grimaldi |
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Alexander Lockwood as Man |
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Charles Wagenheim as Mario |
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Herman Rudin as Pasquale |
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Jon Silo as Benito |
| Directing | Edward L. Cahn | Director |
| Writing | George Bruce | Writer |
| Writing | Orville H. Hampton | Writer |
| Production | Robert E. Kent | Producer |
| Camera | Gilbert Warrenton | Director of Photography |
| Editing | Robert Carlisle | Editor |
| Sound | Hugo Friedhofer | Original Music Composer |
| Production | Ralph Acton | Casting |
| Art | Franz Bachelin | Art Direction |
| Art | Morris Hoffman | Set Decoration |
| Costume & Make-Up | Jerry Bos | Costume Design |
| Costume & Make-Up | Sabine Manela | Costume Design |
| Production | Joseph Small | Production Manager |
| Directing | Herbert S. Greene | Assistant Director |
| Production | Ben Hersh | Production Supervisor |
