A liberal-thinking author watches his wife as she attempts to seduce his best friend at a dinner party. She ends up taking on another man as well, and the writer has an affair with the another dinner guest. Soon the three men and two women are entangled in a confusing series of partner-swapping sex sprees where everyone's morals are challenged in the wake of the sexual revolution.
| Directing | Giuseppe Patroni Griffi | Director |
| Sound | Ennio Morricone | Original Music Composer |
| Writing | Dario Argento | Screenplay |
| Art | Giulio Coltellacci | Production Design |
| Camera | Tonino Delli Colli | Director of Photography |
| Editing | Franco Arcalli | Editor |
| Writing | Giuseppe Patroni Griffi | Screenplay |
| Production | Marina Cicogna | Producer |
| Production | Giovanni Bertolucci | Producer |
| Writing | Giuseppe Patroni Griffi | Theatre Play |
| Directing | Carlo Carunchio | First Assistant Director |
| Directing | Serena Canevari | Script Supervisor |
| Camera | Franco Di Giacomo | Camera Operator |
| Camera | Giuseppe Lanci | Assistant Camera |
| Camera | Roberto Forges Davanzati | Assistant Camera |
| Art | Claudio Giambanco | Assistant Production Design |
| Art | Gianni Silvestri | Assistant Set Decoration |
| Costume & Make-Up | Metka Kosak | Assistant Costume Designer |
| Costume & Make-Up | Franco Corridoni | Makeup Artist |
| Costume & Make-Up | Rosa Luciani | Hairstylist |
| Sound | Giorgio Minoprio | Sound |
| Editing | Olga Pedrini | Assistant Editor |
| Editing | Gabriella Cristiani | Assistant Editor |
| Production | Nicola Venditti | Unit Manager |
| Production | Attilio Viti | Production Secretary |
| Production | Alberto Casati | Production Secretary |
| Production | Pietro Sassaroli | Administration |
| Writing | Carlo Carunchio | Screenplay |
| Production | Aldo U. Passalacqua | Production Manager |
| Sound | Bruno Nicolai | Conductor |
| Sound | Franco Bassi | Sound Mixer |
