Fernando Casanova

Dr. Malthus/Gonzalo Malthus

Sonia Furió

Rosa

Rosa Maria Gallardo

Última raptada

Guillermo Cramer

Inspector de policía

Aurora Alvarado

Luisa

Juan José Martínez Casado

Alcaide

Pedro de Aguillón

Capellán

Guillermo Bravo Sosa

Remigio (uncredited)

Edmundo Espino

Antonio (uncredited)

Armando Velasco

Tío de Rosa (uncredited)

José María Fernández Unsáin

Story

César Santos Galindo

Executive Producer

Gustavo César Carrión

Original Music Composer

Fernando Cortés

Writer

Alfredo Rosas Priego

Editor

Alfredo Ripstein Jr.

Producer

Armando Meyer

Makeup Artist

Esperanza Gómez

Hairstylist

Rafael Suárez

Set Decoration

Alfredo Varela

Adaptation

Juan Muñoz Ravelo

Special Effects

Gunther Gerszo

Production Design

José Ortiz Ramos

Director of Photography

Gunther Gerszo

Art Direction

H.P. Lovecraft

Short Story

Fernando Cortés

Director