In 1940s Venice, after twenty years' marriage, retired art critic Nino Rolfe and his younger wife Teresa feel their passion waning. To help her shed her inhibitions and rekindle their relationship, the professor records his sexual fantasies in a diary.
Is The Key on Netflix? Unfortunately the movie The Key is not yet available on Netflix.
| Directing | Tinto Brass | Director |
| Writing | Tinto Brass | Writer |
| Sound | Ennio Morricone | Original Music Composer |
| Art | Paolo Biagetti | Art Direction |
| Costume & Make-Up | Antonio Maltempo | Assistant Makeup Artist |
| Production | Mario Di Biase | Production Manager |
| Production | Massimo Ferrero | Unit Manager |
| Production | Vittorio Fornasiero | Unit Manager |
| Production | Aldo U. Passalacqua | Production Manager |
| Directing | Luca Lachin | Second Assistant Director |
| Directing | Carlo Montanaro | Second Assistant Director |
| Directing | Pietro Santagada | Second Assistant Director |
| Directing | Domenico Saverni | Second Assistant Director |
| Directing | Ricky Tognazzi | Assistant Director |
| Art | Roberto Magagnini | Props |
| Sound | Gaetano Carito | Sound |
| Sound | Fernando Caso | Sound Effects |
| Sound | Marco Di Biase | Boom Operator |
| Sound | Edmondo Gintili | Foley Recordist |
| Sound | Alvaro Gramigna | Sound Effects |
| Sound | Alessandro Peticca | Sound Editor |
| Camera | Renato Cinti | Key Grip |
| Camera | Ettore Corso | Assistant Camera |
| Camera | Andrea Sabatello | Assistant Camera |
| Camera | Amato Gabotti | Grip |
| Camera | Renzo Gabotti | Grip |
| Camera | Gianfranco Salis | Still Photographer |
| Editing | Emanuele Cassin | Assistant Editor |
| Editing | Emanuela Lucidi | Assistant Editor |
| Production | Gene Luotto | Post Production Coordinator |
| Editing | Fiorenza Muller | Assistant Editor |
| Editing | Giovanna Ritter | Assistant Editor |
| Sound | Angelo Giovagnoli | Musician |
| Production | Fabrizio Ancillai | Production Assistant |
| Production | Mario Sampaolo | Administration |
| Production | Giovanni Bertolucci | Producer |
| Editing | Tinto Brass | Editor |
| Camera | Silvano Ippoliti | Director of Photography |
| Writing | Junichirō Tanizaki | Novel |
| Art | Paolo Biagetti | Production Design |
| Costume & Make-Up | Jost Jakob | Costume Design |
| Directing | Carla Cipriani | Continuity |
| Crew | Gabriella Borini | Choreographer |
| Production | Lilletta Bertolucci | Publicist |
| Sound | Ennio Morricone | Music Director |
| Costume & Make-Up | Marina Frassine | Assistant Costume Designer |
| Costume & Make-Up | Alessandra Querzola | Assistant Costume Designer |
| Costume & Make-Up | Angela Silighini | Seamstress |
| Camera | Enrico Sasso | Camera Operator |
| Camera | Fabrizio Sforza | Still Photographer |
| Lighting | Sergio Spila | Gaffer |
| Sound | Edmondo Gintili | Sound Effects Editor |
| Sound | Fausto Ancillai | Sound Mixer |
| Art | Nello Giorgetti | Assistant Art Director |
| Art | Egidio Spugnini | Assistant Art Director |
| Costume & Make-Up | Jole Cecchini | Hairstylist |
| Costume & Make-Up | Fabrizio Sforza | Makeup Artist |
