People are dying mysteriously and gruesomely, and nobody has a clue what the cause is. Only health worker Mike Brady has a possible solution, but his theory of killer slugs is laughed at by the authorities. Only when the body count begins to rise and a slug expert from England begins snooping around does it begin to look like Mike had the right idea after all.
Unfortunately the movie Slugs is not yet available on HBO Max.
| Production | Juan Piquer Simón | Producer |
| Writing | José Antonio Escrivá | Writer |
| Writing | Shaun Hutson | Novel |
| Writing | Juan Piquer Simón | Writer |
| Production | Francesca DeLaurentiis | Producer |
| Editing | Antonio Gimeno | Editor |
| Directing | Juan Piquer Simón | Director |
| Writing | Ron Gantman | Screenplay |
| Production | José Antonio Escrivá | Producer |
| Camera | Julio Bragado Darman | Director of Photography |
| Crew | Basilio Cortijo | Special Effects |
| Production | Bill Williams | Casting |
| Editing | Richard E. Rabjohn | Editor |
| Costume & Make-Up | Pilar Tavera | Seamstress |
| Crew | Juan Mariné | Second Unit Cinematographer |
| Camera | Carlos Bustamante | Still Photographer |
| Lighting | Steve Nitzberg | Gaffer |
| Production | Gustavo Casado | Casting |
| Sound | Luis Castro | Foley |
| Crew | Kari Christensen | Property Master |
| Directing | Francesca DeLaurentiis | Script Supervisor |
| Lighting | Casimiro Dengra | Gaffer |
| Sound | Enrique Molinero | Sound Re-Recording Mixer |
| Directing | Francesca Escriva | Script Supervisor |
| Costume & Make-Up | Manu Moreno | Hairstylist |
| Camera | Mark Foggetti | Camera Operator |
| Art | Gonzalo Gonzalo | Art Direction |
| Costume & Make-Up | María Eugenia Escrivá | Costume Design |
| Crew | Patrick Tantalo | Special Effects Coordinator |
| Visual Effects | Carlo De Marchis | Special Effects Supervisor |
| Sound | Tim Souster | Music |
