En route to Thebes for an important diplomatic mission, Hercules drinks from a magic spring and loses his memory. He spends most of the movie in the pleasure gardens of Queen Omphale of Lydia. While young Ulysses tries to help him regain his memory, political tensions escalate in Thebes, and Hercules' new wife Iole finds herself in mortal danger.
You can now watch Hercules Unchained online on the following streaming providers in the United States.
| Directing | Pietro Francisci | Director |
| Writing | Pietro Francisci | Screenplay |
| Production | Bruno Vailati | Producer |
| Sound | Enzo Masetti | Original Music Composer |
| Editing | Mario Serandrei | Editor |
| Camera | Ubaldo Terzano | Camera Operator |
| Writing | Ennio De Concini | Screenplay |
| Camera | Mario Bava | Director of Photography |
| Art | Massimo Tavazzi | Set Decoration |
| Costume & Make-Up | Maria Baroni | Costume Design |
| Writing | Pietro Francisci | Story |
| Writing | Aeschylus | Theatre Play |
| Writing | Sophocles | Theatre Play |
| Costume & Make-Up | Otello Fava | Makeup Artist |
| Crew | Mario Bava | Special Effects |
| Directing | Pietro Nuccorini | First Assistant Director |
| Art | Flavio Mogherini | Production Design |
| Art | Giorgio Giovannini | Assistant Production Design |
| Art | Gianni D'Aloisio | Assistant Production Design |
| Directing | Barbara Fusch | Script Supervisor |
| Crew | Enzo Musumeci Greco | Master at Arms |
| Production | Massimo De Rita | Production Assistant |
| Production | Spartaco Conversi | Production Secretary |
| Production | Dante Brini | Production Secretary |
| Costume & Make-Up | Sergio Angeloni | Assistant Makeup Artist |
| Costume & Make-Up | Maria Miccinilli | Hairstylist |
| Costume & Make-Up | Violetta Pacelli | Assistant Hairstylist |
| Camera | Mario Mancini | Assistant Camera |
| Camera | Danilo Desideri | Assistant Camera |
| Sound | Giulio Tagliacozzo | Sound |
| Sound | Giuseppe Muratori | Sound Recordist |
| Sound | Bruno Zanoli | Boom Operator |
| Camera | Aldo Galfano | Still Photographer |
| Costume & Make-Up | Mimma Olivieri | Seamstress |
| Costume & Make-Up | Assunta Lazzazera | Seamstress |
| Sound | Carlo Savina | Conductor |
| Editing | Misa Gabrini | Assistant Editor |
| Production | Ferruccio De Martino | Production Manager |
| Sound | Paolo Ketoff | Sound Mixer |
| Sound | Renato Cadueri | Sound Mixer |
| Directing | Mario Bava | Assistant Director |
