Director
Jaime Salvador
DIRECTOR
Writer
Ramón Obón
WRITER
Robert Louis Stevenson
Adolfo Torres Portillo
Stars (in credits order)
John Carradine
Dr. Halback
Regina Torné
DiNora Jekyll
Miguel Ángel Álvarez
Sir Fredrick Halback
Guillermo Zetina
Doyle
Andrés García
Dr. Alfonso Bennett
Isela Vega
Ballerina
Gloria Munguía
Melina Jackson
Ángel Di Stefani
ACTOR
Laura Ferlo
Sílvia Villalobos
First Subject
Queta Carrasco
Jose Antonio Garcia
Carlos Suárez
