The investigations of a private eye shake up the almost broken marriage of a middle aged couple.
| Directing | Alberto Sordi | Director |
| Production | Sergio Iacobis | Line Producer |
| Art | Lorenzo Baraldi | Production Design |
| Costume & Make-Up | Bruna Parmesan | Costume Design |
| Editing | Tatiana Casini Morigi | Editor |
| Camera | Sergio D'Offizi | Director of Photography |
| Writing | Rodolfo Sonego | Story |
| Writing | Rodolfo Sonego | Screenplay |
| Writing | Alberto Sordi | Screenplay |
| Writing | Augusto Caminito | Co-Writer |
| Sound | Piero Piccioni | Original Music Composer |
| Production | Augusto Caminito | Producer |
| Directing | Paola Scola | First Assistant Director |
| Camera | Enrico Lucidi | Camera Operator |
| Camera | Enrico Maggi | Assistant Camera |
| Camera | Guido Tosi | Assistant Camera |
| Sound | Rocco Roy Mangano | Sound |
| Production | Mario Milani | Unit Manager |
| Production | Massimo Iacobis | Production Secretary |
| Production | Luigi Attardi | Production Secretary |
| Production | Massimo Guizzi | Production Secretary |
| Production | Bruno Palazzi | Production Secretary |
| Production | Armando Del Vecchio | Production Secretary |
| Production | Enzo Sisti | Administration |
| Production | Luigi Scardino | Administration |
| Production | Stefano Melone | Administration |
| Directing | Lucilla Clementelli | Script Supervisor |
| Editing | Marcello Olasio | Assistant Editor |
| Editing | Massimo Gasperini | Assistant Editor |
| Editing | Armando Pace | Assistant Editor |
| Sound | Marco Di Biase | Boom Operator |
| Camera | Roberto Nicosia | Still Photographer |
| Art | Massimo Tavazzi | Set Decoration |
| Art | Giuseppe Pirrotta | Assistant Production Design |
| Costume & Make-Up | Raoul Settimelli | Assistant Costume Designer |
| Costume & Make-Up | Franco Rufini | Makeup Artist |
| Costume & Make-Up | Giancarlo Del Brocco | Makeup Artist |
| Costume & Make-Up | Gabriella Borzelli | Hairstylist |
| Lighting | Enrico D'Offizi | Gaffer |
| Camera | Sergio Serantoni | Key Grip |
| Crew | Giovanni Corridori | Special Effects |
| Sound | Romano Pampaloni | Sound Mixer |
| Sound | Luciano Anzellotti | Foley Artist |
| Sound | Massimo Anzellotti | Foley Artist |