Kingdom of Castile, 15th century. A group of nobles, who question the dynastic legitimacy of Princess Juana, daughter of King Enrique IV, conspire with the purpose of overthrowing him.
Unfortunately the movie La espada negra is not yet available on HBO Max.
| Directing | Isabel Mulá | Script Supervisor |
| Art | Gil Parrondo | Art Direction |
| Editing | Antonio Ramírez de Loaysa | Editor |
| Directing | Francisco Rovira Beleta | Director |
| Writing | Carlos Blanco | Screenplay |
| Camera | Francisco Sempere | Director of Photography |
| Sound | Waldo de los Ríos | Original Music Composer |
| Art | Francisco Prósper | Assistant Art Director |
| Costume & Make-Up | María Luisa Durán | Seamstress |
| Costume & Make-Up | Rafael Richart | Costume Designer |
| Production | Carlos Blanco | Executive Producer |
| Production | Manuel Pérez | Production Director |
| Costume & Make-Up | Blanca Sánchez | Assistant Hairstylist |
| Costume & Make-Up | Agustín Jiménez | Wardrobe Supervisor |
| Camera | Ricardo Andreu | Camera Operator |
| Costume & Make-Up | Josefa Rubio | Hairstylist |
| Costume & Make-Up | José Antonio Sánchez | Makeup Artist |
| Editing | Paloma Ramírez de Loaysa | Assistant Editor |
| Directing | J. J. Bernós | Assistant Director |
| Camera | Julio Sánchez Caballero | Still Photographer |
| Sound | Luis Castro | Sound Effects |
| Camera | Fernando Perrote | Focus Puller |
| Costume & Make-Up | Antonio Segovia | Assistant Makeup Artist |
| Lighting | Antonio Marqués | Gaffer |
| Art | Julián Mateos | Set Decoration |
| Camera | Ángel Gómez Martín | Key Grip |
| Editing | Blanca Guillén | Assistant Editor |
| Crew | Antonio Bueno | Special Effects |
| Production | José Antonio Junceda | Executive Producer |
