Terence Stamp
Padre Andreani, poi Papa Giovanni Clemente I
Fabrizio Bentivoglio
Padre Bruno Martello
Paula Molina
Nina
Gabriele Ferzetti
Cardinale Ixaguirre
José Luis López Vázquez
Don Perrone
Antonio Marsina
Vittorio
Adriano Amidei Migliano
Dottore
Eduardo Fajardo
Rettore
Frank Nuyen
Cardinal (uncredited)
Adriana Colombo
Marcello Aliprandi
Director
Alberto Fioretti
Screenplay
Pino Donaggio
Original Music Composer
Antonio Siciliano
Editor
Marcello Aliprandi
Screenplay
Lucio Battistrada
Screenplay
Enzo Gallo
Screenplay
Pedro Mario Herrero
Screenplay
Max Savigny
Screenstory
Elio Micheli
Art Direction
Alejandro Ulloa
Director of Photography
Maurice Serral
Screenstory
Enzo Gallo
Producer
Antonio de Miguel
Art Designer
Davide Bassan
Set Decoration