A wealthy Italian household is turned upside down when a handsome stranger arrives, seduces every family member and then disappears. Each has an epiphany of sorts, but none can figure out who the seductive visitor was or why he came.
You can now watch Theorem online on the following streaming providers in the United States.
| Camera | Giuseppe Ruzzolini | Director of Photography |
| Production | Franco Rossellini | Producer |
| Costume & Make-Up | Marcella De Marchis | Costume Design |
| Production | Manolo Bolognini | Producer |
| Art | Luciano Puccini | Production Design |
| Sound | Ennio Morricone | Original Music Composer |
| Editing | Nino Baragli | Editor |
| Directing | Pier Paolo Pasolini | Director |
| Directing | Vanda Tuzzi | Script Supervisor |
| Costume & Make-Up | Manlio Rocchetti | Makeup Artist |
| Camera | Otello Spila | Camera Operator |
| Costume & Make-Up | Maria Teresa Corridoni | Key Hair Stylist |
| Costume & Make-Up | Goffredo Rocchetti | Makeup Artist |
| Sound | Fausto Ancillai | Sound Mixer |
| Costume & Make-Up | Roberto Capucci | Costume Design |
| Camera | Angelo Novi | Still Photographer |
| Writing | Pier Paolo Pasolini | Screenplay |
| Production | Paolo Frascà | Production Manager |
| Directing | Sergio Citti | Assistant Director |
| Art | Dario Fronzetti | Set Designer |
| Sound | Bernardino Fronzetti | Sound |
| Sound | Gianni Zampagni | Boom Operator |
| Camera | Giuseppe Buonaurio | Assistant Camera |
| Camera | Luigi Conversi | Assistant Camera |
| Sound | Bruno Nicolai | Music Director |
| Production | Sergio Galiano | Production Secretary |
