Caterina finds out that her husband Peter Tzar of Russia, is plotting to kill her. She sets Count Orlov free from prison, Peter's sworn enemy, becomes empress of Russia and leads the Cossacks army against him.
| Sound | Angelo Francesco Lavagnino | Original Music Composer |
| Production | Fortunato Misiano | Producer |
| Directing | Umberto Lenzi | Director |
| Writing | Guido Malatesta | Story |
| Writing | Guido Malatesta | Screenplay |
| Writing | Umberto Lenzi | Story |
| Writing | Umberto Lenzi | Screenplay |
| Directing | Roberto Giandalia | First Assistant Director |
| Directing | Ermano Stell | First Assistant Director |
| Production | Diego Alchimede | Unit Manager |
| Production | Pasquale Misiano | Unit Manager |
| Editing | Jolanda Benvenuti | Editor |
| Camera | Luigi Allegretti | Camera Operator |
| Camera | Renato Mascagno | Assistant Camera |
| Directing | Mirella Malatesta | Script Supervisor |
| Sound | Franco Groppioni | Sound |
| Sound | Bruno Moreal | Sound |
| Costume & Make-Up | Massimo Giustini | Makeup Artist |
| Costume & Make-Up | Violetta Pacelli | Hairstylist |
| Editing | Alba Di Salvo | Assistant Editor |
| Art | Italo Tallone | Assistant Set Decoration |
| Art | Giuseppe Ranieri | Assistant Production Design |
| Art | Peppino Piccolo | Production Design |
| Art | Franco D'Andria | Set Decoration |
| Costume & Make-Up | Walter Patriarca | Costume Design |
| Camera | Augusto Tiezzi | Director of Photography |
| Production | Nino Misiano | Line Producer |