| Original title | Experiment in terror |
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| Danish title | Stemmen i mørket |
| Leikstjórn | Blake Edwards |
| Screenplay | The Gordons |
| Based on | Roman af The Gordons. |
| Producer | Blake Edwards |
| Director of Photography | Philip H. Lathrop |
| Editor | Patrick McCormack |
| Composer | Henry Mancini |
| Appearance | Glenn Ford, Lee Remick, Stefanie Powers |
| Land | USA |
| Domestic distribution | Columbia |
| Danish theatrical release | 12.10.1962 |
| Cinemas | Nørreport Bio |
| TV release | 09.05.1974, DR |
Companies |
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| Production company | Columbia |
| Domestic distribution | Columbia |
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Instruktion |
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| Instruktion | Blake Edwards |
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Manus |
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| Manus | The Gordons |
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Produktion |
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| Producer | Blake Edwards |
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Foto |
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| Foto | Philip H. Lathrop |
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Klip |
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| Klip | Patrick McCormack |
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Musik |
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| Musik | Henry Mancini |
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Medvirkende |
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| Medvirkende | Glenn Ford |
| Medvirkende | Lee Remick |
| Medvirkende | Stefanie Powers |
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