El secreto del Dr. Orloff

Hugo Blanco

as Andros

Agnès Spaak

as Melissa

Perla Cristal

as Rosa

Magda Maldonado

as Amira (as Magda MacDonald)

Marcelo Arroita-Jáuregui

as Dr. Conrad Jekyll

Pepe Rubio

as Juan Manuel

Pastor Serrador

as Inspector Klein

Luisa Sala

as Inglud Jekyll / Ingrid Fisherman

Manuel Guitián

as Ciceron

Ramón Lillo

as Emilio, the inspector's assistant

Jesús Franco

as Piano Player

Marta Reves

Daniel Blumer

as Karl Steiner

Mer Casas

as Conrad's Girlfriend

Rafael Hernández

as Club Owner

José Truchado

as Policeman

Juan Antonio Soler

as Witness

Javier de Rivera

as The Professor

Julio Infiesta

as Club Security

Julia Toboso

Maribel Hidalgo

Pedro Fenollar

as Lang (uncredited)