Marta used to be a recognized and successful psychic, but after a dramatic experience, she loses faith in her gift and develops agoraphobia. She couldn't see the devilish side of her rapper, Mario, and now, Marta is afraid that Mario will stalk her again. As soon as she released from the asylum, she moves to Monica's uncle apartment. There, she feels safe. But soon, she has trouble with her crazy neighbors. And if this wasn't enough, a spectrum starts to haunt her, making her life impossible. Marta will have to fight against all these difficulties and manage to get her gift back before Mario finds her.
Unfortunately the movie Demon Inside is not yet available on HBO Max.
| Directing | Alfonso Pineda Ulloa | Director |
| Writing | Alfonso Pineda Ulloa | Writer |
| Sound | Alex de Icaza | Music |
| Editing | Marcelino Islas Hernández | Editor |
| Production | Daniel Posada | Executive Producer |
| Crew | Erick Bongcam | Compositors |
| Editing | Jorge Macaya | Editor |
| Production | Joceline Hernández | Executive Producer |
| Production | Santiago Garcia Galvan | Producer |
| Production | Alex García | Producer |
| Production | Eugenio Villamar | Executive Producer |
| Production | Andrés Tagliavini | Executive Producer |
| Art | Bernardo Trujillo | Production Design |
| Production | Araceli Velázquez | Executive Producer |
| Crew | Marc Bellver | Cinematography |
| Writing | Juan Felipe Orozco | Screenplay |
| Costume & Make-Up | Jimena Cuarón | Makeup Artist |
| Production | Omar Arias González | Unit Production Manager |
| Crew | Sergio Galicia | Transportation Captain |
| Directing | Eva Ruiz de Chávez | Script Supervisor |
| Writing | Carlos Esteban Orozco | Screenplay |
| Production | Joceline Hernández | Line Producer |
| Production | Eugenio Villamar | Line Producer |
| Production | Rodolfo Marquez | Executive Producer |
| Crew | Vanessa Hernández | Post Production Supervisor |
| Crew | César René Vigné | Stunts |
| Editing | Melanie Haslam | Assistant Editor |
| Sound | Dan Zlotnik | Music |
| Crew | Gerard Mates | Second Unit |
| Editing | Enrique Fernández Tanco | Dialogue Editor |
| Production | Víctor Solorio | Location Manager |
| Sound | John Sawa | Sound Effects Editor |
| Crew | Jorge de Jesús Pérez Alba | Digital Producer |
| Camera | Fernando Hernández | First Assistant Camera |
| Crew | Alejandro de Icaza | Compositors |
| Crew | Carlos A. Morales | Post Production Supervisor |
| Art | Mariana Aceves | Assistant Art Director |
| Visual Effects | Jose C. Garcia de Letona | Visual Effects Producer |
| Visual Effects | Gabriela Olmedo | Visual Effects Producer |
| Crew | Julian Bucio | Stunt Coordinator |
| Lighting | Edgar Ambriz Espinoza | Gaffer |
| Directing | Carlos Manzo | Second Assistant Director |
| Visual Effects | Edgardo Mejia | Visual Effects Producer |
| Crew | Diego Suárez Groult | Graphic Novel Illustrator |
| Sound | Alejandro de Icaza | Sound Re-Recording Mixer |
| Sound | Axel Muñoz | Sound Recordist |
| Camera | Jordi de Planell | Camera Operator |
| Visual Effects | Omar Rocha | Lead Character Designer |
| Visual Effects | Gustavo Bellón | Digital Compositors |
| Camera | María Grinda | Still Photographer |
| Sound | Alejandro de Icaza | Musician |
| Sound | Daniel Douglass | ADR Editor |
| Production | Dino Villegas | Production Coordinator |
| Costume & Make-Up | César Perlop | Makeup Artist |
| Sound | José E. Caldararo | Foley |
| Sound | Alejandro de Icaza | Supervising Sound Editor |
| Sound | John Sawa | Sound Designer |
| Art | Noyolotl Orrante Mata | Set Decoration |
| Crew | César Perlop | Makeup Effects |
| Production | Juan R. González Frank | Production Coordinator |
| Costume & Make-Up | Atzin Hernández | Costume Design |
| Costume & Make-Up | Tacho | Makeup Artist |
| Visual Effects | Edgardo Mejia | Special Effects Supervisor |
| Crew | Jorge de Jesús Pérez Alba | Lighting Camera |
| Visual Effects | Daniela Cortez Güendulain | Digital Compositors |
| Editing | Salvador Flores | Assistant Editor |
| Production | Manolo Cardona | Executive Producer |
| Visual Effects | Octavio Mancilla | Digital Compositors |
| Costume & Make-Up | Ariel León Castro | Makeup Artist |
| Directing | Berenice Gil | Second Assistant Director |
| Sound | Bechen de Loredo | Foley Editor |
| Production | Claudia Mera | Production Coordinator |
| Production | Jacobo Pineda | Production Accountant |
| Crew | Ricardo Díaz Avilés | Transportation Coordinator |
| Production | Martha Naranjo Sandoval | Assistant Production Manager |
| Production | Alejandra Gonzalez-Reygadas | Assistant Production Coordinator |
| Crew | Dan Carrillo Levy | Thanks |
| Production | Alejandra Gonzalez-Reygadas | Production Manager |