Professor Jiménez believes the human retina retains the image of the last thing a person sees before death. Only his student Eduardo stands by him in the face of widespread mockery. Together they will try and prove the professors theory but fate has a unpleasant way of helping them do this.
| Directing | Gabriel Soria | Director |
| Directing | Roberto Gavaldón | Assistant Director |
| Production | José Luis Bueno | Producer |
| Writing | Emilio Fernández | Adaptation |
| Writing | Emilio Fernández | Writer |
| Writing | Pedro Zapiain | Story |
| Writing | Gabriel Soria | Writer |
| Art | Jorge Fernández | Art Direction |
| Sound | José B. Carles | Sound Director |
| Camera | Jack Draper | Director of Photography |
| Sound | Mario Talavera | Original Music Composer |