The story of how the Guardia Civil, a militarized police force, fought for nearly half a century against ETA, a ruthless terrorist gang dedicated to murder, kidnapping, extortion and arms and drug smuggling while cynically demanding independence for the Basque Country in northern Spain.
You can now watch The Challenge: ETA online on the following streaming providers in the United States.
| Production | Luis Velo | Executive Producer |
| Production | Macu Jackson | Producer |
| Camera | Juan Luis Cabellos | Director of Photography |
| Production | María José Vallano | Producer |
| Writing | David Zurdo | Writer |
| Sound | Sergio Jiménez Lacima | Original Music Composer |
| Camera | Ángel Iguacel | Director of Photography |
| Production | Laura Jouve | Producer |
| Directing | Hugo Stuven Casasnovas | Director |
| Production | Esther Vivas | Producer |