The Roman taxi driver Pietro Marchetti finds himself to witness a mafia crime. Having to testify at the trial, he is checked by the police, especially when he has to go to the United States to attend the graduation of his son Francesco.
| Directing | Alberto Sordi | Director |
| Sound | Piero Piccioni | Original Music Composer |
| Art | Marco Dentici | Production Design |
| Production | William C. Rose | Production Assistant |
| Production | Fulvio Lucisano | Producer |
| Production | Giovanna Emidi | Production Accountant |
| Editing | Tatiana Casini Morigi | Editor |
| Production | Mirko Ikonomoff | Delegated Producer |
| Costume & Make-Up | Silvia Frattolillo | Costume Design |
| Writing | Rodolfo Sonego | Story |
| Writing | Rodolfo Sonego | Screenplay |
| Writing | Alberto Sordi | Story |
| Writing | Alberto Sordi | Screenplay |
| Camera | Giuseppe Ruzzolini | Director of Photography |
| Production | Vittorio Galiano | Line Producer |
| Directing | Giuseppe Pedersoli | First Assistant Director |
| Production | Ricky Sacco | Unit Manager |
| Directing | Raffaele Mottola | Script Supervisor |
| Sound | Roberto Petrozzi | Sound |
| Costume & Make-Up | Giovanni Rufini | Makeup Artist |
| Camera | Enrico Cortese | Camera Operator |
| Camera | Aldo Bergamini | Assistant Camera |
| Art | Massimo Galiano | Assistant Production Design |
| Production | Antonio Mammolotti | Production Secretary |
| Camera | Enrico Appetito | Still Photographer |
| Production | Giovanna Di Michele | Administration |
| Editing | Armando Pace | Assistant Editor |
| Editing | Pina Triunveri | Assistant Editor |
| Editing | Ugo Morelli | Assistant Editor |
| Sound | Gianni D'Amico | Sound Mixer |
| Sound | Roberto Sterbini | Foley Artist |
| Sound | Tullio Arcangeli | Foley Artist |
| Sound | Sotir Gjika | Foley Artist |
| Sound | Armando Janota | Boom Operator |
| Lighting | Furio Rocchi | Gaffer |
| Camera | Umberto Torriero | Key Grip |
