Two devils from Hell are sent to Earth to cause trouble. Belfagor and his faithful sidekick Adramalek must start a war between Rome and Florence in 1478.
| Writing | Ettore Scola | Screenplay |
| Editing | Marcello Malvestito | Editor |
| Directing | Ettore Scola | Director |
| Writing | Ruggero Maccari | Screenplay |
| Camera | Aldo Tonti | Director of Photography |
| Editing | Tatiana Casini Morigi | Editor |
| Sound | Armando Trovajoli | Original Music Composer |
| Art | Luciano Ricceri | Production Design |
| Production | Mario Cecchi Gori | Producer |
| Costume & Make-Up | Maurizio Chiari | Costume Design |
| Art | Ezio Altieri | Set Decoration |
| Writing | Ettore Scola | Story |
| Writing | Ruggero Maccari | Story |
| Production | Pio Angeletti | Line Producer |
| Production | Armando Morandi | Production Manager |
| Production | Bruno Altissimi | Production Secretary |
| Crew | Armando Grilli | Special Effects |
| Crew | Franco Fantasia | Master at Arms |
| Production | Giorgio Scotton | Unit Manager |
| Directing | Dino De Palma | First Assistant Director |
| Directing | Don Carlos Dunaway | First Assistant Director |
| Costume & Make-Up | Otello Sisi | Makeup Artist |
| Costume & Make-Up | Giancarlo De Leonardis | Hairstylist |
| Directing | Ilde Muscio | Script Supervisor |
| Costume & Make-Up | Danda Ortona | Assistant Costume Designer |
| Camera | Luigi Kuveiller | Camera Operator |
| Sound | Mario Morigi | Sound Mixer |
| Sound | Guido Ortenzi | Sound |
| Sound | Vittorio De Sisti | Boom Operator |
