Dr. Dora Materlick
Diana Sorel
Karl Von Rysselberg
Nicholas Ney
Cyclist's Widow (as Marisa Tobar)
María Luisa Tovar
Cyclist
Francisco Bonmatí
(uncredited)
Jesús Alesanco
Francisco Correa
Vampiro de las ruinas
Ricardo Vázquez
Veronica (as Inés Skorpio)
Inés Morales
Margaret (as Loretta Martin)
Loreta Tovar
Erica Rosenberg
Beatriz Elorrieta
Barón von Rysselberg
Antonio Jiménez Escribano
Otto
José Villasante
Housekeeper
Rosario Royo
Major Christopher Roland
Rafael Vaquero
Brenda
Susan Taff
Music
Angelo Francesco Lavagnino
Director
José María Elorrieta
Screenplay
Story
Production Manager
Rafael Marina
Fermín Sandoval
Joaquín Torres
Producer
Assistant Director
Enrique Pérez de Gomara
Enrique González Macho
Makeup Artist
Adela del Pino
Vittorio Gelmetti
Special Effects
Antonio Molina
Director of Photography
Juan Ruiz Romero