In 1570, widowed Princess Ana de Mendoza becomes the love object of a deadly rivalry between her cousin Don Inigo, King Philip II of Spain and his secretary of state Antonio Perez.
| Directing | Terence Young | Director |
| Writing | Kate O'Brien | Theatre Play |
| Writing | Sy Bartlett | Screenplay |
| Writing | Anthony Veiller | Screenplay |
| Production | Sy Bartlett | Producer |
| Production | Ronald Kinnoch | Associate Producer |
| Sound | John Addison | Original Music Composer |
| Camera | Robert Krasker | Director of Photography |
| Editing | Raymond Poulton | Editor |
| Art | Alfred Junge | Production Design |
| Art | Frank White | Art Direction |
| Art | Freda Pearson | Set Decoration |
| Costume & Make-Up | Mariano Andreu | Costume Design |
| Costume & Make-Up | Betty Lee | Hairstylist |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Production | Ted Cotton | Production Manager |
| Art | Alfred Junge | Set Dresser |
| Directing | Denis O'Dell | Assistant Director |
| Directing | Peter Mullins | Assistant Director |
| Sound | Sash Fisher | Sound Recordist |
| Sound | Leslie Hodgson | Sound Recordist |
| Sound | Claude Hitchcock | Boom Operator |
| Crew | Peter Diamond | Stunts |
| Camera | John Harris | Camera Operator |
| Costume & Make-Up | Ivy Baker | Wardrobe Supervisor |
| Editing | Willy Kemplen | Assistant Editor |
| Directing | Betty Harley | Continuity |
| Sound | Muir Mathieson | Conductor |
| Sound | London Symphony Orchestra | Musician |
