Cast (16)

Boris Karloff

Prof. John Mayer

Enrique Guzmán

Dr. Paul Rosten

Christa Linder

Laura

Maura Monti

Dr. Isabel Reed

Yerye Beirute

Thomas

Tere Valez

Nancy

Griselda Mejía

Prostitute

Sergio Kleiner

Alien

Mariela Flores

Deaf-mute victim

Tito Novaro

Gen. Nord

Sergio Virel

Villager

Nathanael León

Villager

Carlos León

Villager

Rosángela Balbó

Martha - mayor's wife

Julián de Meriche

Visiting Dignitary

Arturo Fernández

Crew (19)

Jack Hill

Director

José Luis González de León

Director

Juan Ibáñez

Director

Juan Ibáñez

Writer

Raúl Domínguez

Director of Photography

Enrico C. Cabiati

Original Music Composer

Antonio Ramírez

Makeup Artist

Enrique Gordillo

Special Effects

Octavio Ocampo

Art Direction

Vicente Tostado

Costume Design

Luis Enrique Vergara

Writer

Luis Enrique Vergara

Producer

Raúl J. Casso

Editor

Austin McKinney

Director of Photography

Raúl Cárdenas

Set Decoration

Maria Elena Ortiz

Hairstylist

José Luis Cerrada

Production Manager

Karl Schanzer

Writer

José Méndez

Art Direction