Full cast and crew
Camera
Javier Ferrer
assistant camera
Francisco Sánchez
director of photography
Costume & make-up
Sound
Alberto Argudo
original music composer
Editing
Art
Alfonso de Lucas
set decoration
Directing
Juan Bosch
director
Writing
Actors
Paul Naschy
Father Adrian Dunning
Maria Perschy
Patricia Gibson
María Kosty
Deborah Gibson
Mercedes Molina
Leila Gibson
Joan Llaneras
John Gibson
Luis Induni
Udo
Jordi Torras
Dr. Lewton Buchanan
Roger Leveder
Richard Harrington
Marta Avilés
Sandra
Juan Velilla
Comisario
Florencio Calpe
Christian
Dora Santacreu
Abigail
Esteban Dalmases
Policía (uncredited)
Джек Тейлор
Father Adrian Dunning (voice)