A salesman discovers that his wife has died under strange circumstances. Examining these circumstances, it becomes obvious to him that they were mainly caused by himself.
| Directing | Mario Camus | Director |
| Writing | Mario Camus | Writer |
| Camera | Víctor Monreal | Director of Photography |
| Sound | Antonio Pérez Olea | Music |
| Writing | Carlos Saura | Writer |
| Production | José Antonio Duce | Producer |
| Editing | Gaby Peñalba | Editor |
| Art | Luis Argüello | Set Decoration |
| Directing | Federico Canudas | First Assistant Director |
| Sound | Jesús Jiménez | Sound |
| Production | Antonio Díaz del Castillo | Production Assistant |
| Camera | Teo Escamilla | Camera Operator |
| Directing | Luis S. Enciso | First Assistant Director |
| Directing | José Antonio Duce | Assistant Director |
| Directing | Concha Hidalgo | Script Supervisor |
| Costume & Make-Up | Práxedes Martínez | Makeup Artist |
| Production | Ignacio Gutiérrez | Production Manager |
| Sound | Francisco Mansó | Sound |