Marta is obsessed with protecting her son from the genetic predisposition to schizophrenia that she has hidden from her husband.
| Directing | Roberto Gavaldón | Director |
| Writing | Edmundo Báez | Writer |
| Writing | Rodolfo Usigli | Writer |
| Writing | Roberto Gavaldón | Writer |
| Production | Jesús Grovas | Producer |
| Sound | Raúl Lavista | Music |
| Crew | Gabriel Figueroa | Cinematography |
| Editing | Gloria Schoemann | Editor |
| Art | Manuel Fontanals | Art Direction |
| Costume & Make-Up | Ana Guerrero | Makeup & Hair |
| Costume & Make-Up | María de Jesús Lepe | Makeup & Hair |
| Visual Effects | Jorge Benavides | Visual Effects |
