Directed by
| Juan José Segura | ||
Writing Credits (in alphabetical order)
| Jorge Cardeña Álvarez | ||
| Juan José Segura | ||
Cast (in credits order)
 |
Leopoldo 'Chato' Ortín | ... | Sóstenes (as Leopoldo Ortin) |
| Carlos Villarías | ... | Dr. Dienys | |
|
|
Aurora Campuzano | ... | Susanita (as Aurorita Campuzano) |
| Consuelo Frank | ... | Margarita | |
|
|
Ramón Armengod | ... | Alberto |
| Emilio Fernández | ... | Idúa | |
|
|
Jorge Cardeña Álvarez | ... | Dr. Castillo (as Jorge C. Alvarez) |
|
|
Armando Roosendal | ... | Amigo de Sóstenes (as A. Roozendaal) |
|
|
Raúl Urquijo | ... | Monster |
|
|
Manuel Noriega | ... | (as Manolo Noriega) |
| Rest of cast listed alphabetically: | |||
|
|
Galdino R. Samperio | ... | (uncredited) |
Music by
| Chucho Monge | ... | (as Chucho Monje) |
Cinematography by
| Jack Draper | ... | (as Lauron A. Draper) |
Production Design by
| José Rodríguez Granada | ... | (as José Rodríguez) |
Production Management
| Jorge Cardeña | ... | production manager |
Second Unit Director or Assistant Director
| Antonio Guerrero Tello | ... | assistant director (as Antonio Guerrero T.) |
Sound Department
| José B. Carles | ... | sound (as Ing. José B. Carles) |
Editorial Department
| José Marino | ... | synchronization editor |
Music Department
| Daniel Pérez Castañeda | ... | orchestrator |
Additional Crew
| Jorge Stahl | ... | laboratory director |
| Carlos Véjar hijo | ... | titles (as Véjar) |
