Rome, Italy. After committing a heinous crime, a senior police officer exposes evidence incriminating him because his moral commitment prevents him from circumventing the law and the social order it protects.
You can now watch Investigation of a Citizen Above Suspicion online on the following streaming providers in the United States.
| Directing | Elio Petri | Director |
| Editing | Ruggero Mastroianni | Editor |
| Camera | Luigi Kuveiller | Director of Photography |
| Production | Daniele Senatore | Producer |
| Production | Marina Cicogna | Producer |
| Costume & Make-Up | Rosa Luciani | Hair Designer |
| Sound | Ennio Morricone | Original Music Composer |
| Writing | Elio Petri | Screenplay |
| Writing | Ugo Pirro | Screenplay |
| Costume & Make-Up | Angela Sammaciccia | Costume Designer |
| Camera | Ubaldo Terzano | Camera Operator |
| Camera | Antonio Annunziata | Assistant Camera |
| Production | Romano Cardarelli | Production Director |
| Sound | Bruno Nicolai | Music Director |
| Art | Carlo Egidi | Production Design |
| Camera | Sergio Emidi | Key Grip |
| Lighting | Sergio Coletta | Gaffer |
| Directing | Antonio Gabrielli | Assistant Director |
| Sound | Mario Bramonti | Sound Recordist |
| Sound | Giuseppe Muratori | Boom Operator |
| Sound | Mario Amari | Sound Mixer |
| Costume & Make-Up | Franco Corridoni | Makeup Designer |
| Camera | Mario Tursi | Still Photographer |
| Directing | Lorenzo Magnolia | Assistant Director |
| Writing | Elio Petri | Screenstory |
| Writing | Ugo Pirro | Screenstory |
| Production | Romano Cardarelli | Production Manager |
| Sound | Bruno Nicolai | Conductor |
| Writing | Elio Petri | Story |
| Writing | Ugo Pirro | Story |
| Production | Roberto Onorati | Production Secretary |
| Directing | Antonio Gabrielli | First Assistant Director |
| Directing | Lorenzo Magnolia | Second Assistant Director |
| Directing | Armenia Balducci | Script Supervisor |
| Art | Egidio Spugnini | Assistant Production Design |
| Editing | Adriana Olasio | Assistant Editor |
| Editing | Edoardo Romani | Assistant Editor |
| Sound | Mario Bramonti | Sound |
| Costume & Make-Up | Franco Corridoni | Makeup Artist |
| Costume & Make-Up | Rosa Luciani | Hairstylist |
| Production | Alfredo Petri | Unit Manager |
| Production | Hermes Gallippi | Unit Manager |
