Marcus Numidius, a Roman tribune sent to Armenia to put down a gladiators' revolt, captures the rebels' popular leader, Aselepius. Princess Amira, with ambitions of being Queen and jealous of Asclepius' popularity, plans his death in the arena by substituting a lion for his human opponent
| Directing | Vittorio Cottafavi | Director |
| Camera | Mario Pacheco | Director of Photography |
| Editing | Julio Peña | Editor |
| Costume & Make-Up | Enzo Bulgarelli | Costume Design |
| Costume & Make-Up | Anacleto Giustini | Makeup Artist |
| Production | Italo Zingarelli | Production Manager |
| Sound | Ivo Benedetti | Sound |
| Sound | Jaime Torrens | Sound |
| Camera | Renato Carmassi | Camera Operator |
| Camera | Julio Ortas | Camera Operator |
| Production | Dino Benedetti | Production Assistant |
| Production | Alberto Giommarelli | Production Assistant |
| Production | José Herrera | Production Assistant |
| Writing | Natividad Zaro | Story |
| Writing | Gian Paolo Callegari | Screenplay |
| Writing | Francesco De Feo | Screenplay |
| Writing | Gianfranco Parolini | Screenplay |
| Writing | Giovanni Simonelli | Screenplay |
| Writing | Francesco Thellung | Screenplay |
| Writing | Natividad Zaro | Screenplay |
| Writing | Ennio De Concini | Screenplay |
| Directing | Gianfranco Parolini | First Assistant Director |
| Directing | Augusto Fenollar | First Assistant Director |
| Directing | Giorgio Ubaldi | First Assistant Director |
| Costume & Make-Up | Fernanda Titta | Hairstylist |
| Costume & Make-Up | Carmen Sánchez | Hairstylist |
| Art | Adele Tosi | Set Decoration |
| Art | Antonio Simont | Production Design |
| Art | Vittorio Rossi | Production Design |
| Sound | Roberto Nicolosi | Original Music Composer |
| Production | Virgilio De Blasi | Producer |
| Costume & Make-Up | José María Sánchez | Makeup Artist |
