Elenco - Dr. Orloff's Monster
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
Daniel Blumer
Karl SteinerMer Casas
Conrad's Girlfriend
Rafael Hernández
Club OwnerJosé Truchado
PolicemanJuan Antonio Soler
Witness
Javier de Rivera
The ProfessorJulio Infiesta
Club Security
Pedro Fenollar
Lang (uncredited)