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Vittorio Gassman as Belfagor |
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Claudine Auger as Maddalena De Medici |
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Mickey Rooney as Adramelek |
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Ettore Manni as Capitano Gianfigliazzo - The Guard Captain |
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Annabella Incontrera as Lucrezia |
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Liana Orfei as Olimpia |
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Giorgia Moll as Aristocrat's Wife |
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Milena Vukotić as Maddalena's Young Servant |
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Elena Fabrizi as Maddalena's Old Servant |
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Luigi Vannucchi as Principe Francesco 'Franceschetto' Chibo de Longuiara |
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Gabriele Ferzetti as Lorenzo de' Medici |
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Hélène Chanel as Clarice |
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Paolo Bonacelli as Inn's customer |
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Corrado Olmi as Innkeeper |
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Omero Capanna as Soldier (uncredited) |
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Marco Tulli as |
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Ugo Fangareggi as biografo di Lorenzo |
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Franco De Rosa as |
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Ernesto Colli as |
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Giovanni Ivan Scratuglia as |
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Roberto De Simone as |
| Camera | Aldo Tonti | Director of Photography |
| Writing | Ettore Scola | Screenplay |
| Directing | Ettore Scola | Director |
| Writing | Ruggero Maccari | Screenplay |
| Editing | Tatiana Casini Morigi | Editor |
| Editing | Marcello Malvestito | Editor |
| Production | Pio Angeletti | Line Producer |
| Directing | Ilde Muscio | Script Supervisor |
| Writing | Ettore Scola | Story |
| Costume & Make-Up | Otello Sisi | Makeup Artist |
| Costume & Make-Up | Giancarlo De Leonardis | Hairstylist |
| Production | Bruno Altissimi | Production Secretary |
| Camera | Luigi Kuveiller | Camera Operator |
| Crew | Franco Fantasia | Master at Arms |
| Production | Armando Morandi | Production Manager |
| Directing | Don Carlos Dunaway | First Assistant Director |
| Writing | Ruggero Maccari | Story |
| Directing | Dino De Palma | First Assistant Director |
| Costume & Make-Up | Danda Ortona | Assistant Costume Designer |
| Sound | Guido Ortenzi | Sound |
| Sound | Vittorio De Sisti | Boom Operator |
| Sound | Mario Morigi | Sound Mixer |
| Crew | Armando Grilli | Special Effects |
| Production | Giorgio Scotton | Unit Manager |
| Art | Ezio Altieri | Set Decoration |
| Production | Mario Cecchi Gori | Producer |
| Costume & Make-Up | Maurizio Chiari | Costume Design |
| Art | Luciano Ricceri | Production Design |
| Sound | Armando Trovajoli | Original Music Composer |
