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 |
| Directing | Francisco Rovira Beleta | Director |
| Editing | Antonio Ramírez de Loaysa | Editor |
| Art | Gil Parrondo | Art Direction |
| Camera | Francisco Sempere | Director of Photography |
| Writing | Carlos Blanco | Screenplay |
| Sound | Waldo de los Ríos | Original Music Composer |
| Costume & Make-Up | Agustín Jiménez | Wardrobe Supervisor |
| Costume & Make-Up | José Antonio Sánchez | Makeup Artist |
| Production | José Antonio Junceda | Executive Producer |
| Camera | Fernando Perrote | Focus Puller |
| Costume & Make-Up | María Luisa Durán | Seamstress |
| Costume & Make-Up | Rafael Richart | Costume Designer |
| Production | Manuel Pérez | Production Director |
| Editing | Blanca Guillén | Assistant Editor |
| Art | Francisco Prósper | Assistant Art Director |
| Camera | Ricardo Andreu | Camera Operator |
| Costume & Make-Up | Blanca Sánchez | Assistant Hairstylist |
| Camera | Ángel Gómez Martín | Key Grip |
| Camera | Julio Sánchez Caballero | Still Photographer |
| Directing | J. J. Bernós | Assistant Director |
| Crew | Antonio Bueno | Special Effects |
| Production | Carlos Blanco | Executive Producer |
| Costume & Make-Up | Josefa Rubio | Hairstylist |
| Lighting | Antonio Marqués | Gaffer |
| Costume & Make-Up | Antonio Segovia | Assistant Makeup Artist |
| Sound | Luis Castro | Sound Effects |
| Art | Julián Mateos | Set Decoration |
| Editing | Paloma Ramírez de Loaysa | Assistant Editor |
