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José Sacristán as Miguel de Unamuno (voice) |
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Marian Álvarez as Researcher (voice) |
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Víctor Clavijo as General Millán-Astray (voice) |
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Andrés Gertrúdix as Bartolomé Aragón (voice) |
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Antonio de la Torre as General Mola (voice) |
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Miguel Cubero as José María Pemán (voice) |
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Ramón Mayrata as Father Tusquets / Gen. Gonzalo de Aguilera (voice) |
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Vicente León as Manuel Azaña / Francisco Maldonado (voice) |
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Javier Maqua as Francisco Bravo (voice) |
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Margarita Arnaz as Susana Unamuno (voice) |
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Helvia Álvarez as Researcher |
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Miguel de Unamuno Adarraga as Self - Grandson |
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Miguel de Unamuno as Self - Writer (archive footage) |
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King Alfonso XIII of Spain as Self (archive footage) |
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Indalecio Prieto as Self - Politician (archive footage) |
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Francisco Largo Caballero as Self - Politician (archive footage) |
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Pedro Rico López as Self - Politician (archive footage) |
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Niceto Alcalá-Zamora as Self - Politician (archive footage) |
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Manuel Azaña as Self - Politician (archive footage) |
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José María Gil-Robles as Self - Politician (archive footage) |
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Adolf Hitler as Self - Politician (archive footage) |
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Benito Mussolini as Self - Politician (archive footage) |
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José Millán-Astray as Self - Military (archive footage) |
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Francisco Franco as Self - Politician (archive footage) |
| Production | Andrés Luque | Executive Producer |
| Production | Helvia Álvarez | Researcher |
| Sound | Carlos Pérez Valero | Foley Artist |
| Production | Manuel Menchón | Executive Producer |
| Art | Itziar Sagasti | Art Direction |
| Crew | Pedro Lozano | Post Production Supervisor |
| Lighting | Iker Criado | Gaffer |
| Editing | Carmen de Couto | Assistant Editor |
| Crew | Diego Polo | Special Effects |
| Editing | Cristina Ruiz | Colorist |
| Camera | Jon Azcorra | Grip |
| Sound | Juan Egoscozabal | Foley Artist |
| Sound | Martín Grignaschi | Sound Recordist |
| Sound | José Tomé | Sound Supervisor |
| Editing | Araceli Uzquiano | Archival Footage Research |
| Art | Cristina Ruiz | Graphic Designer |
| Crew | Paola Botrán | Post Production Supervisor |
| Directing | Pablo Ontoria | Assistant Director |
| Sound | Jorge Marín | Sound Mixer |
| Sound | Javier Camarasa | Sound Recordist |
| Writing | Manuel Menchón | Writer |
| Directing | Manuel Menchón | Director |
| Sound | José Tomé | Sound Designer |
| Art | Ana Muñoz de Terry | Art Direction |
| Visual Effects | Alexey Krivosheev | Visual Effects Supervisor |
| Production | Mario Madueño | Executive Producer |
| Production | Mario Madueño | Producer |
| Editing | Renato Sanjuán | Editor |
| Camera | Javier Calvo | Director of Photography |
| Sound | Iván Palomares | Original Music Composer |
| Production | Marga Barcoj | Production Director |
| Production | Manuel Menchón | Producer |
