Directed by
| Luis Lucia | ||
Writing Credits (in alphabetical order)
| José Luis Colina | ... | (adaptation) |
| Luis Lucia | ||
| Armando Palacio Valdés | ... | (novel) |
| Manuel Tamayo | ... | (adaptation) |
Cast (in credits order)
| Carmen Sevilla | ... | Gloria Alvargonzález / Hermana San Sulpicio | |
| Jorge Mistral | ... | Ceferino Sanjurjo | |
| Manuel Luna | ... | Don Sabino | |
| Julia Caba Alba | ... | Hermana Guadalupe | |
| Manolo Gómez Bur | ... | Daniel Suárez (as Manuel Gómez Bur) | |
| Casimiro Hurtado | ... | Martínez | |
| Ana de Leyva | ... | Madre Superiora #1 | |
| Rosario Royo | ... | Madre Superiora #2 | |
| Antonio Riquelme | ... | Revisor del tren | |
| Rest of cast listed alphabetically: | |||
| Juana Mansó | ... | Madre de la Hermana Isabel (as Juanita Manso) | |
 |
Milagros Carrión | ... | Hermana Isabel (uncredited) |
| Manuel de Juan | ... | Interno en sanatorio (uncredited) | |
| Juana Ginzo | ... | Hermana extranjera (uncredited) | |
| Manuel Guitián | ... | Interno en sanatorio (uncredited) | |
| Rafael Hernández | ... | Viajero en el tren (uncredited) | |
| Antonio Ozores | ... | Hombre optimista (uncredited) | |
Music by
| Juan Quintero | ||
Cinematography by
| Antonio L. Ballesteros | ||
Editing by
| Antonio Ramírez de Loaysa | ||
Second Unit Director or Assistant Director
| Ricardo Blasco | ... | assistant director |
Script and Continuity Department
| Carmen Pageo | ... | script supervisor |
