All Cast
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