In Barcelona, in 1650, Count Don Cesare di Bazan tries to foil, with the help of an actress, a plot hatched against the king by the French ambassador.
| Directing | Riccardo Freda | Director |
| Production | Riccardo Freda | Producer |
| Writing | Sergio Amidei | Screenplay |
| Writing | Vitaliano Brancati | Screenplay |
| Writing | Giacomo Debenedetti | Screenplay |
| Writing | Riccardo Freda | Screenplay |
| Sound | Franco D'Achiardi | Music |
| Crew | Mario Craveri | Cinematography |
| Editing | Rolando Benedetti | Editor |
| Art | Gastone Medin | Set Designer |
| Costume & Make-Up | Gino Carlo Sensani | Costume Design |
| Costume & Make-Up | Maria De Matteis | Costume Design |