| Actor | Alberto de Mendoza (as Prof. Fulton), Emiliano Redondo (as Dr. Messier), Tomás Picó (as Viktor) |
| Actress | Nadiuska (as Clara), Teresa Gimpera (as Berta), Julia Saly (as Marion), Diana Polakov (as Tania) |
| Director | León Klimovsky |
| Writer (Screenplay) | Gabriel Moreno Burgos, Vicente Aranda, Joaquim Jordà |
| Links | https://www.imdb.com/title/tt0073550/ |
Releases 1
| Title | Format | Region | |
|---|---|---|---|
 | The People Who Own the Dark | Blu-ray | ALL |