De geboorte van de Baskische terroristenbende ETA en de eerste aanval ervan, waarvan José Antonio Pardines, een verkeersagent van de Guardia Civil, het slachtoffer was.
Nee, helaas is La línea invisible nog niet beschikbaar op Netflix in Nederland.
| Production | Domingo Corral | Executive Producer |
| Production | Rafael Portela Freire | Executive Producer |
| Sound | Vicente Ortiz Gimeno | Original Music Composer |
| Camera | Marc Gómez del Moral | Director of Photography |
| Editing | Jaume Martí | Editor |
| Editing | Pablo Más Serrano | Editor |
| Production | Sara Bilbatúa | Casting |
| Costume & Make-Up | Itziar Arrieta | Hairstylist |
| Costume & Make-Up | Lola López | Makeup Artist |
| Costume & Make-Up | Mercè Paloma | Costume Design |
| Sound | José E. Caldararo | Sound |
| Writing | Michel Gaztambide | Writer |
| Writing | Alejandro Hernández | Writer |
| Production | Fran Araújo | Associate Producer |
| Production | Ismael Calleja | Associate Producer |
| Production | Abel García Roure | Associate Producer |
| Production | Oriol Maymó | Associate Producer |
| Art | Llorenç Miquel | Production Design |
| Production | Oriol Maymó | Production Manager |
| Production | Ander Sistiaga | Production Manager |
| Directing | Fernando Sánchez-Izquierdo | First Assistant Director |
| Directing | Fernando Sánchez-Izquierdo | Second Unit Director |
| Art | Raúl Fernández López | Property Master |
| Art | Edu Glez | Graphic Designer |
| Art | Mario Suances | Art Direction |
| Sound | Steve Miller | Sound Designer |
| Sound | Pablo Bueno | Sound Recordist |
| Sound | Iñaki Díez | Boom Operator |
| Sound | Iñigo Tena | Boom Operator |
| Sound | Joshua Durán | Boom Operator |
| Sound | Unai Giménez | Boom Operator |
| Visual Effects | Mariano García Ojeda | Special Effects Supervisor |
| Visual Effects | Jon Serrano Serván | Special Effects Supervisor |
| Visual Effects | Juanma Nogales | Visual Effects Supervisor |
| Crew | Carlos Cortes Ciudad | Stunts |
| Crew | Jose Álvarez-Boze | Stunt Double |
| Crew | Martina Valero | Stunt Double |
| Crew | Víctor Cerezuela | Stunts |
| Lighting | Ricardo Aranburu | Gaffer |
| Camera | Oscar Gutiérrez de la Torre | Steadicam Operator |
| Camera | Olaya Marcos | Second Assistant Camera |
| Lighting | Txema Areizaga Orube | Gaffer |
| Camera | Txarli Argiñano | Second Unit Director of Photography |
| Camera | Albert Carreras | Camera Operator |
| Camera | Gonzalo F. Berridi | Second Unit Director of Photography |
| Camera | Lisbeth Salas | Still Photographer |
| Camera | Takuro Takeuchi | Second Unit Director of Photography |
| Camera | Patrícia Torres | Focus Puller |
| Editing | Núria Campabadal | Additional Editor |
| Editing | Noémie Dulau | Colorist |
| Production | Lupe Martínez | Location Manager |
| Directing | Ane Muñoz | Script Supervisor |
| Writing | Abel García Roure | Idea |
| Crew | Raúl Fernández López | Stunt Driver |
