The fake private detective Mike Spillone is hired by two old ladies to find out if Brigitte, the wife of their nephew Otello Bellomo, has a lover. Brigitte is a physician but the two aunts are unaware of the fact. While investigating, Mike and his assistant Johnny discover Brigitte with a prospective patient, the marquis De Vitti who was shot by the husband of the woman he tried to seduce. Afterwards Spillone finds her with her husband who he believes to be her lover.
You can now watch Totò, Vittorio and the Doctor online on the following streaming providers in the United States.
| Directing | Camillo Mastrocinque | Director |
| Writing | Vittorio Metz | Screenplay |
| Sound | Carlo Innocenzi | Original Music Composer |
| Camera | Alvaro Mancori | Director of Photography |
| Camera | Gábor Pogány | Director of Photography |
| Writing | Marcello Marchesi | Screenplay |
| Production | Franco Serino | Production Manager |
| Editing | Roberto Cinquini | Editor |
| Sound | Vittorio Trentino | Sound |
| Directing | Liana Ferri | Script Supervisor |
| Production | Umberto Santoni | Production Secretary |
| Camera | Mario Capriotti | Camera Operator |
| Camera | Guglielmo Mancori | Camera Operator |
| Costume & Make-Up | Pierantonio Mecacci | Makeup Artist |
| Costume & Make-Up | Lina Cassini | Hairstylist |
| Costume & Make-Up | Luciana Marinucci | Costume Design |
| Art | Piero Filippone | Production Design |
| Art | Luigi Gervasi | Set Decoration |
| Directing | Leonardo Scavino | First Assistant Director |
| Writing | Marcello Marchesi | Story |
| Writing | Vittorio Metz | Story |
| Production | Franco Palaggi | Unit Manager |