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.
Unfortunately the movie Theorem is not yet available on HBO Max.
| Production | Franco Rossellini | Producer |
| Directing | Pier Paolo Pasolini | Director |
| Editing | Nino Baragli | Editor |
| Sound | Ennio Morricone | Original Music Composer |
| Production | Manolo Bolognini | Producer |
| Camera | Giuseppe Ruzzolini | Director of Photography |
| Costume & Make-Up | Marcella De Marchis | Costume Design |
| Art | Luciano Puccini | Production Design |
| Art | Dario Fronzetti | Set Designer |
| Sound | Bernardino Fronzetti | Sound |
| Writing | Pier Paolo Pasolini | Screenplay |
| Production | Paolo Frascà | Production Manager |
| Directing | Sergio Citti | Assistant Director |
| Camera | Giuseppe Buonaurio | Assistant Camera |
| Sound | Gianni Zampagni | Boom Operator |
| Production | Sergio Galiano | Production Secretary |
| Sound | Bruno Nicolai | Music Director |
| Camera | Luigi Conversi | Assistant Camera |
| Camera | Otello Spila | Camera Operator |
| Directing | Vanda Tuzzi | Script Supervisor |
| Costume & Make-Up | Manlio Rocchetti | Makeup Artist |
| Costume & Make-Up | Goffredo Rocchetti | Makeup Artist |
| Costume & Make-Up | Maria Teresa Corridoni | Key Hair Stylist |
| Sound | Fausto Ancillai | Sound Mixer |
| Costume & Make-Up | Roberto Capucci | Costume Design |
| Camera | Angelo Novi | Still Photographer |
