A young physician becomes lonely when his workaholic wife ignores him to concentrate on her professional career. He is befriended by an older female artist who is fond of hallucinogenic mushrooms. When his wife is late for their anniversary celebration, he drinks and takes mushrooms with the artist. He wakes up to find she has died and is fearful he may have accidentally killed her.
| Actor | Role |
|---|---|
 Mylène DemongeotAnne Calder | Anne Calder |
 Alida ValliLinda Benson | Linda Benson |
 Catherine AllégretJeannette | Jeannette |
 Jean-Claude BouillonÉric Calder | Éric Calder |
 Philippe MonnetGaëtan Benson | Gaëtan Benson |
 Jean ClaudioInspecteur Kogan | Inspecteur Kogan |
 Georges GéretKurt | Kurt |
 Guy GrossoActeur dans le film publicitaire | Acteur dans le film publicitaire |
| CClaude ParaNot listed | Not listed |
 François SimonLe juge d'instruction Forman | Le juge d'instruction Forman |
| GGérard CarratNot listed | Not listed |
| JJean LandierNot listed | Not listed |
 Robert FavartNot listed | Not listed |