The prestigious composer Virgilio Delise, suspected of being involved in the death of his stepfather, unexpectedly runs away. Doria, an ambitious insurance detective, will stop at nothing to prove his guilt.
| Directing | Josep Maria Forn | Director |
| Writing | Josep Maria Forn | Screenplay |
| Writing | Mario Lacruz | Novel |
| Writing | Mario Lacruz | Screenplay |
| Production | Josep Maria Forn | Producer |
| Editing | Juan Luis Oliver | Editor |
| Costume & Make-Up | Gabriel Comella | Makeup Designer |
| Production | Carlos Boué | Production Manager |
| Production | Augusto Boué | Production Manager |
| Production | Eduardo Sancho | General Manager |
| Sound | Federico Martínez Tudó | Original Music Composer |
| Sound | Miguel Sitges | Sound Engineer |
| Camera | Antonio Macasoli | Director of Photography |
| Camera | Sebastián Perera | Director of Photography |
