| Original title | The Silent Barrier |
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| Danish title | Afgrunden |
| Leikstjórn | William Worthington |
| Screenplay | Charles T. Dazey |
| Director of Photography | Bert Dawley, Virgil Miller |
| Appearance | Sheldon Lewis, Corinne Barker, Florence Dixon |
| Land | USA |
| Domestic distribution | Fotorama |
| Danish theatrical release | 12.09.1921 |
| Cinemas | Vesterbro Teater |
Companies |
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| Production company | Gibraltar Pictures |
| Domestic distribution | Fotorama |
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Instruktion |
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| Instruktion | William Worthington |
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Manus |
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| Manus | Charles T. Dazey |
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Foto |
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| Foto | Bert Dawley |
| Foto | Virgil Miller |
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Medvirkende |
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| Medvirkende | Sheldon Lewis |
| Medvirkende | Corinne Barker |
| Medvirkende | Florence Dixon |
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