Een mysterieuze tiener genaamd Ángelo zorgt voor Klaus, een Duitse arts met een duister verleden die gevangen zit in een ijzeren long.
Nee, helaas is Tras el cristal nog niet beschikbaar op Netflix in Nederland.
| Directing | Agustí Villaronga | Director |
| Sound | Ricard Casals | Sound Re-Recording Mixer |
| Production | Teresa Enrich | Executive Producer |
| Editing | Raúl Román | Editor |
| Sound | Javier Navarrete | Original Music Composer |
| Art | Francesc Candini | Production Design |
| Camera | Jaume Peracaula | Director of Photography |
| Costume & Make-Up | Andrés Urdiciaian | Costume Designer |
| Costume & Make-Up | Imma Vallmitjana | Costume Designer |
| Writing | Agustí Villaronga | Screenplay |
| Production | Biel Moll | Assistant Production Manager |
| Directing | Paco Siurana | Assistant Director |
| Production | Paco Poch | Production Manager |
| Crew | Reyes Abades | Special Effects |
| Sound | Licio Marcos de Oliveira | Sound Mixer |
| Art | América Sánchez | Graphic Designer |
| Costume & Make-Up | Elisenda Villanueva | Makeup Artist |
| Art | Jordi Artigau | Set Dresser |
| Costume & Make-Up | J. Ruiz Alonso | Makeup & Hair Assistant |
| Art | Isidro Terraza | Property Master |
| Art | José Ángel Cebollada | Props |
| Crew | José Martínez | Carpenter |
| Art | Carme Curt | Props |
