In 1668, in the Cotentin region, witchcraft was still widely practiced. To get rid of an overly strict priest, a gathering of heretics took advantage of the night of Saint Martin to organize a sabbath. A young boy found himself involved in this black mass against his will. The religious authorities decided to investigate and punish the miscreants...
| Actor | Role |
|---|---|
| MMichel SubielaNarrator (voice) (uncredited) | Narrator (voice) (uncredited) |
 Edith GarnierJeanne | Jeanne |
| SSerge DucherCharles | Charles |
 Charles MoulinBaude, sorcerer | Baude, sorcerer |
 Roger GuilloRommy | Rommy |
| JJean-Pierre HercéJacques | Jacques |
 Renée GardèsThe old woman | The old woman |
 Marc de GéorgiSivard | Sivard |
 Frédérique RuchaudMarguerite | Marguerite |
 André ValmyBailiff | Bailiff |
 Jean VinciDu Taillis | Du Taillis |
 Martin TrévièresNot listed | Not listed |
 Régis OutinNot listed | Not listed |
 Raoul GuilletNot listed | Not listed |
 Yvon SarrayNot listed | Not listed |
| EElisabeth AlainNot listed | Not listed |
 Nicole CholletNot listed | Not listed |
 Olivier NolinNot listed | Not listed |
| CClaude RichardNot listed | Not listed |
| GGermaine KerjeanThe Levavasseur | The Levavasseur |
 Reine CourtoisLouise Noël | Louise Noël |
| JJeannette GranvalNot listed | Not listed |
| MMarcel ChicotNot listed | Not listed |
 Marcel ChampelNot listed | Not listed |
| GGeorges MontautNot listed | Not listed |