The director of the Geneva Philharmonic Orchestra, Hans Peter Miller, returns home after a concert and is accosted by an intrusive spectator, Léon Dinkel, who introduces himself as a great admirer who has come from Belgium. The longer the conversation between the two continues, the stranger the visitor's behavior becomes.
| Actor | Role |
|---|---|
 Giuseppe PambieriNot listed | Not listed |
| CCarlo GrecoNot listed | Not listed |