A group of French students are drawn into the psychological and sexual games of a mysterious man called Duchemin. Once they sample his "fear powder" the students experience a series of hallucinations.
| Actor | Role |
|---|---|
 Catherine JourdanViolette | Violette |
 Pierre ZimmerDuchemin | Duchemin |
 Lorraine RainerMarie-Eve | Marie-Eve |
| RRichard LeducMarc-Antoine | Marc-Antoine |
| SSylvain CorthayRobert | Robert |
 Juraj KukuraBoris | Boris |
| JJarmila KoleničováSonia | Sonia |
 Catherine Robbe-GrilletFoolish Woman | Foolish Woman |
| ĽĽudovít KronerFranc | Franc |
| EEva LutherováViolette's look-a-like | Violette's look-a-like |
| FFrantišek GervaiProfessor | Professor |
| MMarián SotníkStudent | Student |
 Dušan JamrichJean-Pierre | Jean-Pierre |
| PPeter OpálenýStudent | Student |
| ŠŠtefánia MinárováGirl in Black | Girl in Black |
| LLadislav UčníkStudent | Student |
 Ivan RomančíkMan with a Guitar | Man with a Guitar |
| VVladimír BartoňStudent | Student |