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Vincent Price as Alex Medbourne / Dr. Giacomo Rappaccini / Gerald Pyncheon |
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Sebastian Cabot as Dr. Carl Heidegger |
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Brett Halsey as Giovanni Guasconti |
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Beverly Garland as Alice Pyncheon |
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Richard Denning as Jonathan Maulle |
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Mari Blanchard as Sylvia Ward |
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Abraham Sofaer as Prof. Pietro Baglioni |
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Jacqueline deWit as Hannah Pyncheon, Gerald's Sister |
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Joyce Taylor as Beatrice Rappaccini |
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Edith Evanson as Lisabetta, the landlady |
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Floyd Simmons as Ghost of Matthew Maulle |
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Gene Roth as Cabman |
| Directing | Sidney Salkow | Director |
| Writing | Robert E. Kent | Writer |
| Sound | Alfred R. Bird | Sound Effects Editor |
| Writing | Nathaniel Hawthorne | Story |
| Sound | Richard LaSalle | Original Music Composer |
| Camera | Ellis W. Carter | Director of Photography |
| Art | Franz Bachelin | Art Direction |
| Art | Charles S. Thompson | Set Decoration |
| Costume & Make-Up | Gene Hibbs | Makeup Artist |
| Costume & Make-Up | Jane Shugrue | Hairstylist |
| Crew | Milton Olsen | Special Effects |
| Production | Joseph Small | Production Manager |
| Editing | Grant Whytock | Supervising Editor |
| Directing | Al Westen | Assistant Director |
| Sound | Edna Bullock | Music Editor |
| Costume & Make-Up | Marjorie Corso | Costume Designer |
| Art | Irving W. Sindler | Property Master |
| Sound | Lambert E. Day | Sound |
| Directing | Jean Downing | Script Supervisor |
| Production | Robert E. Kent | Producer |
