Drama based on the true life of a group of middle class and members of the Communist Party of Spain, who were involved in clandestine political activities during the sixties.
| Directing | José María González Sinde | Director |
| Writing | José Luis Garci | Writer |
| Writing | José María González Sinde | Writer |
| Production | José Luis Garci | Producer |
| Production | José Garijo | Producer's Assistant |
| Camera | Hans Burmann | Director of Photography |
| Editing | Miguel González Sinde | Editor |
| Art | Enrique Alarcón | Art Direction |
| Costume & Make-Up | Isabel Chamizo | Costume Design |
| Costume & Make-Up | Tomasa Benito | Assistant Makeup Artist |
| Costume & Make-Up | Romana González | Makeup Department Head |
| Costume & Make-Up | Josefa Morales | Hairstylist |
| Production | Diego Gómez Sempere | Production Manager |
| Directing | Miguel Acarregui | Assistant Director |
| Directing | Ignacio Castresana | Assistant Director |
| Sound | Francisco Peramos | Sound Recordist |
| Camera | Ramiro Sabell | Assistant Camera |
| Editing | Elena Calvo | Assistant Editor |
| Editing | Amparo F. Roces | Assistant Editor |
