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Laura Hidalgo as Blanca / Mónica |
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Hugo del Carril as Fernando de Arellano |
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Gloria Ferrandiz as Housekeeper Sabina |
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Ricardo Galache as Doctor Santillán |
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Pedro Laxalt as Don Álvaro - Medical Doctor |
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Francisco López Silva as Butler Esteban |
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Eduardo Rudy as Luis Marcel / Mauricio Pontier |
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Ricardo de Rosas as Coachman Bernabé |
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Víctor Martucci as Doctor - Santillán's Friend |
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Lilí Gacel as Handmaid Herminia |
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Ramona Lloveras as Don Álvaro's Wife |
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Alberto Barcel as Usher |
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Adolfo Meyer as Don Álvaro's Father |
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Fedora Marini as Don Álvaro's Mother |
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Alfredo Almanza as Police Detective #1 |
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Rafael Diserio as |
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Pedro Garza as |
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Roberto Machado as Police Detective #2 |
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José Rivas as Porter |
| Camera | Alberto Etchebehere | Director of Photography |
| Sound | Tito Ribero | Original Music Composer |
| Sound | María Luisa Ritterstein | Musician |
| Writing | Eduardo Borrás | Screenplay |
| Costume & Make-Up | Kurt Grun | Makeup Designer |
| Directing | Felipe López | Assistant Director |
| Sound | José María Paleo | Sound Recordist |
| Costume & Make-Up | Eduardo Lerchundi | Costume Designer |
| Writing | Georges Rodenbach | Novel |
| Directing | Orlando Zumpano | Assistant Director |
| Directing | Hugo del Carril | Director |
| Editing | Higinio Vecchione | Editor |
| Sound | Mario Fezia | Sound |
| Camera | Alberto Corchi | Camera Operator |
| Art | Gori Muñoz | Production Design |
