Paolo Villaggio
Dr. Jekyll / Mr Hyde
Edwige Fenech
Barbara Wimply
Gianrico Tedeschi
James / Jeeves
Gordon Mitchell
Pretorius
Paolo Paoloni
Professor
Guerrino Crivello
Student
Eolo Capritti
Henchman
Francesco Anniballi
Henchman
Walter Williams
PANTAC Top President
Clemente Ukmar
Henchman
Geoffrey Copleston
Archibald Gold
Paola Arduini
Stewardess
Angelo Boscariol
PANTAC Board Member (uncredited)
Luciano Foti
Class Member (uncredited)
Alfonso Giganti
Industrialist (uncredited)
Juba Kennerley
Gentleman (uncredited)
Giuseppe Marrocco
PANTAC Board Member (uncredited)
Fulvio Mingozzi
PANTAC Board Member (uncredited)
Alessandro Tedeschi
Professor introducing Jekyll (uncredited)
Luciano Zanussi
PANTAC Board Member (uncredited)
Steno
Director
Luciano Martino
Producer
Ennio Guarnieri
Director of Photography
Renato Jaboni
Executive Producer
Renato Ranieri
Camera Operator
Bruno Moreal
Sound Mixer
Sergio Salvati
Director of Photography
Armando Trovajoli
Original Music Composer
Giovanni Manganelli
First Assistant Director
Piero De Bernardi
Story
Leonardo Curreri
Administration
Antonio Scaramuzza
Assistant Camera
Mirella Ginnoto
Hairstylist
Massimo Iabone
Sound
Robert Louis Stevenson
Novel
Raimondo Crociani
Editor
Lucia Nolano
Production Secretary
Steno
Story
Franco Schioppa
Makeup Artist
Massimo Tavazzi
Set Decoration
Carlo Bartolini
Production Manager
Franco Castellano
Idea
Luciano Spadoni
Production Design
Marina Mattoli
Script Supervisor
Elisabetta Poccioni
Costume Design
Franco Bruni
Camera Operator
Lamberto Palmieri
Unit Manager
Sergio Gennari
Hairstylist
Gianfranco Mecacci
Makeup Artist
Giovanni Manganelli
Co-Writer
Maurizio Lucchini
Assistant Camera
Leonardo Benvenuti
Story
Leonardo Benvenuti
Screenplay
Marisa Crimi
Costume Design
Pina Triunveri
Assistant Editor
Francesco Narducci
Still Photographer
Piero De Bernardi
Screenplay
Steno
Screenplay
Pipolo
Idea