In 1870s Scotland mining engineer James Starr is asked by former colleague Simon Ford, who's living inside the abandoned Aberfoyle mine, to help solve mysterious occurrences taking place inside the mine.
| Actor | Role |
|---|---|
 Alain MottetJames Starr | James Starr |
 Georges PoujoulyHarry Ford | Harry Ford |
 André ValmySimon Ford | Simon Ford |
 Jean-Pierre MoulinJack Ryan | Jack Ryan |
 Geneviève FontanelMaggie | Maggie |
 Paloma MattaNell | Nell |
 Yvette EtiévantMadge Ford | Madge Ford |
 Christian BarbierSilfax | Silfax |
 Jean GallandSir Elphiston | Sir Elphiston |
 Jean Obépremier policier | premier policier |
 Henri Marteaudeuxième policier | deuxième policier |
| JJacques Florenceun jeune mineur | un jeune mineur |
| RRobert Munkle prêtre | le prêtre |
 Mag-AvrilMac Failane | Mac Failane |
| JJacques BouvierMilitiaman | Militiaman |
| BBilly Callawaymusicien | musicien |
| AArnaud JouannestNot listed | Not listed |
 Robert MoorNot listed | Not listed |
| LLucien MorisseNot listed | Not listed |