Harvey hires Mary to seduce his rival Larry and help him gain his revenge. But Maria and Larry fall in love and things become complicated.
| Directing | Eugenio Martín | Director |
| Writing | Santiago Moncada | Screenplay |
| Production | José Frade | Producer |
| Sound | Gregorio García Segura | Original Music Composer |
| Camera | Fernando Arribas | Director of Photography |
| Editing | José Antonio Rojo | Editor |
| Art | Gil Parrondo | Set Decoration |
| Costume & Make-Up | Tony Pueo | Costume Design |
| Costume & Make-Up | Dolores Merlo | Makeup Artist |
| Costume & Make-Up | Josefa Morales | Hairstylist |
| Costume & Make-Up | Tomasa Benito | Assistant Makeup Artist |
| Production | Enrique Bellot | Production Manager |
| Directing | Ricardo Huertas Frutos | Assistant Director |
| Art | Juan Gracia | Property Master |
| Art | Ángel Cañizares | Assistant Set Decoration |
| Sound | José María San Mateo | Sound Engineer |
| Camera | Fernando Fernández | Assistant Camera |
| Camera | Felipe López | Still Photographer |
| Camera | Saturnino Pita | Assistant Camera |
| Camera | Domingo Solano | Assistant Camera |
| Costume & Make-Up | María Teresa García Trueba | Seamstress |
| Editing | Concepción Piño | Assistant Editor |
| Crew | Sandra Le Brocq | Choreographer |
| Production | Santiago Marugán | Production Assistant |
| Production | Francisco J. Tudela | Production Assistant |
