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