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Niní Marshall as Niní / agenteX25 / Carmiña / Surabaya |
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Virgílio Teixeira as Richard / Tte. Jorjof |
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Rafael Calvo as Bonnard - jefe servicios secretos |
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Francisco Pierrá as Durand |
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Ramón Martori as Renoir |
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Rosita Valero as Carmela |
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Xan das Bolas as Don Cosme Fernández |
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Rafael Bardem as Gerente del hotel polaco |
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Manuel Requena as Mozo |
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Matilde Muñoz Sampedro as Señora en restaurante |
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Julia Caba Alba as Mujer en el tren |
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Manuel de Juan as Worsikoff |
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Fernando Aguirre as Basilio |
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Roberto Font as Michel |
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Trini Montero as Princesa Jesusa |
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Pepito Goyanes as Niño espía X110 |
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Marisa de Leza as Corista (uncredited) |
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José Durantes as (uncredited) |
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Arturo Marín as Hombre del queso (uncredited) |
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Rafael Romero Marchent as (uncredited) |
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Rosario Royo as Doña Rosa (uncredited) |
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Manuel San Román as Señor X (uncredited) |
| Production | Manuel Rosellón | Producer |
| Camera | Félix Mirón | Camera Operator |
| Directing | Carmen Pageo | Script Supervisor |
| Writing | Miguel Mihura | Story |
| Costume & Make-Up | Francisco Puyol | Makeup & Hair |
| Camera | Jesús Rosellón | Assistant Camera |
| Production | Ángel Tudela | Production Secretary |
| Camera | Manuel Berenguer | Director of Photography |
| Art | Francisco Rodríguez Asensio | Construction Coordinator |
| Sound | Antonio Alonso | Sound Engineer |
| Sound | León Lucas de la Peña | Sound Director |
| Art | Sigfrido Burman | Set Decoration |
| Directing | Armando Moreno | Assistant Director |
| Directing | Benito Perojo | Director |
| Production | Miguel Tudela | Production Manager |
| Production | Benito Perojo | Producer |
| Directing | José María Ramos | Second Assistant Director |
| Sound | Juan Quintero | Music |
| Editing | María Paredes | Editor |
| Camera | Valentín Javier | Still Photographer |
