Director: León Klimovsky
Waldemar Daninsky comes to swinging seventies' London, seeking a cure to his malady. Unfortunately, he meets Dr. Jekyll who injects him with a serum that turns him into the lascivious killer Mr. Hyde. In his top hat and black cloak, Hyde haunts the fleshpots of Soho, while two gorgeous women fight for possession of his wolfman soul...
Paul Naschy
Waldemar Daninsky / Wolfman / Mr. Hyde
Shirley Corrigan
Justine
Jack Taylor
Dr. Henry Jekyll
Mirta Miller
Sandra
José Marco
Imre Kosta
Luis Induni
Otvos
Barta Barri
Gyogyo, the inn-keeper
Luis Gaspar
Thurko, Otvos's thug
Elsa Zabala
Uswika Bathory
Lucy Tiller
Whore
Montserrat Julió
Agatha (uncredited)
Marisol Delgado
Nurse / Victim (uncredited)
María Luisa Tovar
Streetwalker / Victim (uncredited)
Heinrich Starhemberg
Party Guest (uncredited)
Jorge Vico
Adolfo Thous
(as Adolfo Tohus)
Simón Ramírez
Waldemar Daninsky (voice) (uncredited)
Paul Naschy
Waldemar Daninsky / Wolfman / Mr. Hyde
Shirley Corrigan
Justine
Jack Taylor
Dr. Henry Jekyll
Mirta Miller
Sandra
José Marco
Imre Kosta
Luis Induni
Otvos
Barta Barri
Gyogyo, the inn-keeper
Luis Gaspar
Thurko, Otvos's thug
Elsa Zabala
Uswika Bathory
Lucy Tiller
Whore
Montserrat Julió
Agatha (uncredited)
Marisol Delgado
Nurse / Victim (uncredited)
María Luisa Tovar
Streetwalker / Victim (uncredited)
Heinrich Starhemberg
Party Guest (uncredited)
Jorge Vico
Adolfo Thous
(as Adolfo Tohus)
Simón Ramírez
Waldemar Daninsky (voice) (uncredited)
Paul Naschy
Waldemar Daninsky / Wolfman / Mr. Hyde
Shirley Corrigan
Justine
Jack Taylor
Dr. Henry Jekyll
Mirta Miller
Sandra
José Marco
Imre Kosta
Luis Induni
Otvos
Barta Barri
Gyogyo, the inn-keeper
Luis Gaspar
Thurko, Otvos's thug
Elsa Zabala
Uswika Bathory
Lucy Tiller
Whore
Montserrat Julió
Agatha (uncredited)
Marisol Delgado
Nurse / Victim (uncredited)
María Luisa Tovar
Streetwalker / Victim (uncredited)
Heinrich Starhemberg
Party Guest (uncredited)
Jorge Vico
Adolfo Thous
(as Adolfo Tohus)
Simón Ramírez
Waldemar Daninsky (voice) (uncredited)