Bruno Fioretti, known as "Mandrake", is an inveterate gambler who never misses a day at the horse racing track in Rome. He is doubly unlucky: he bets too much on one horse, and his wife is sleeping with his best friend because Mandrake is always at the track. Penniless and cuckolded, Mandrake decides to make one last bet.
| Directing | Steno | Director |
| Writing | Enrico Vanzina | Screenplay |
| Writing | Alfredo Giannetti | Screenplay |
| Writing | Massimo Patrizi | Story |
| Production | Roberto Infascelli | Producer |
| Writing | Steno | Screenplay |
| Production | Lucio Orlandini | Production Manager |
| Production | Egidio Valentini | Unit Manager |
| Art | Franco Bottari | Production Design |
| Costume & Make-Up | Bruna Parmesan | Costume Design |
| Camera | Emilio Loffredo | Director of Photography |
| Editing | Raimondo Crociani | Editor |
| Sound | Franco Bixio | Original Music Composer |
| Sound | Fabio Frizzi | Original Music Composer |
| Sound | Vince Tempera | Original Music Composer |
| Sound | Renato Checcacci | Boom Operator |
| Directing | Lodovico Gasparini | First Assistant Director |
| Directing | Vittoria Vigorelli | Script Supervisor |
| Production | Paolo Bistolfi | Production Secretary |
| Camera | Giovanni Fiore Coltellacci | Camera Operator |
| Camera | Sandro Rubbo | Assistant Camera |
| Camera | Pino Venditti | Assistant Camera |
| Camera | Giuseppina di Cola | Still Photographer |
| Sound | Giorgio Pallotta | Sound |
| Sound | Manlio Urbani | Boom Operator |
| Costume & Make-Up | Gloria Granati | Makeup Artist |
| Costume & Make-Up | Vittoria Silvi | Hairstylist |
| Art | Mauro Passi | Assistant Production Design |
| Editing | Francesco Malvestito | Assistant Editor |
| Editing | Adelchi Marinangeli | Assistant Editor |
| Editing | Mariella Scalese | Assistant Editor |
