Elenco
Hugo Blanco
Andros
Agnès Spaak
Melissa
Perla Cristal
Rosa
Magda Maldonado
Amira (as Magda MacDonald)
Marcelo Arroita-Jáuregui
Dr. Conrad Jekyll
Pepe Rubio
Juan Manuel
Pastor Serrador
Inspector Klein
Luisa Sala
Inglud Jekyll / Ingrid Fisherman
Manuel Guitián
Ciceron
Ramón Lillo
Emilio, the inspector's assistant
Jesús Franco
Piano Player
Marta Reves
Daniel Blumer
Karl Steiner
Mer Casas
Conrad's Girlfriend
Rafael Hernández
Club Owner
José Truchado
Policeman
Juan Antonio Soler
Witness
Javier de Rivera
The Professor
Julio Infiesta
Club Security
Julia Toboso
Maribel Hidalgo
Pedro Fenollar
Lang (uncredited)
Equipe
Jesús Franco
Director
Jesús Franco
Screenplay
Jesús Franco
Dialogue
Nicole Guettard
Writer
Daniel White
Original Music Composer
Marius Lesoeur
Producer
Fernando García Morcillo
Music
Alfonso Nieva
Director of Photography
Ángel Serrano
Editor
Fernando Somoza
Production Design
Julio Parra
Production Supervisor
R. St. Martin
Sound Engineer