A young newlywed couple from America returns to Geneva to visit Marcel's home town. Once there he is informed of his former lover's suicide and in turn is subjected to threats that accuse him of being responsible for her death and further, threaten his new fiancée's life. George Hilton plays a peculiar neighbor with voyeuristic tendencies who has an obsession with Deborah.
| Directing | Romolo Guerrieri | Director |
| Writing | Ernesto Gastaldi | Writer |
| Writing | Luciano Martino | Story |
| Camera | Marcello Masciocchi | Director of Photography |
| Editing | Eugenio Alabiso | Editor |
| Production | Tony Garnett | Producer |
| Production | Pierre Gurgo-Salice | Co-Producer |
| Production | Mino Loy | Producer |
| Production | Luciano Martino | Producer |
| Art | Amedeo Fago | Production Design |
| Costume & Make-Up | Gaia Romanini | Costume Design |
| Costume & Make-Up | Iolanda Conti | Hairstylist |
| Costume & Make-Up | Mario Van Riel | Makeup Artist |
| Sound | Bruno Moreal | Sound Mixer |
| Sound | Bruno Zanoli | Sound Editor |
