An Ultra Film/Marianne Productions/Roxi Film production 
Director : Lucio Fulci
Screenplay : Adriano Baracco, Ennio DeConcini, Lucio Fulci, Roberto Gianviti
Cinematography : Erico Menczer
Editor : Ornella Micheli,
Music : Ward Swingle, conducted by Jean Michel Defaje, Fugue in G minor (J.S. Bach)

Production manager : Danilo Marciani – Unit managers : Rodolfo Martello, Antonio Mazza – Production secretary : Nicola Venditti – Administrator : Vincenzo Lucarini – Production designer : Giorgio Giovannini – Set dresser : Dario Micheli – Assistant director : Francesco Massaro – Continuity : Rita Agostini – Cameraman : Alio Polacchi – Assistant cameramen : Federico del Zoppo, Mario Dattilo, Luigi Sbrizzi – Make-up : Giulio Natalucci – Hairdresser : Iolanda Conti – Still photographer : G.B. Poletto – Sound : Claudio Majelli – Stunt co-ordinator : Remy Julienne – Sound technician : Pierre Fatsme – Recording studio : Europa Sonor – Negatives, positives and optical effects : S.P.E.S. – Color : Eastmancolor

With : Lando Buzzanca (Napoleone), Jean-Claude Brialy (Cajella), Heinz Rühmann (Cardinal Braun), Christine Barclay (Marisa), Uta Levka (Samantha), Antonella Della Porta (Cesira), Pinuccio Ardia (Le Baron), Ugo Fangareggi (Agonia), Dante Maggio (Le Capitaine), Giovanni Ivan Scratuglia, Herbert Fux (Obiettivo), Wolfgang Kieling (Puledro),  Edward G. Robinson (Joe Ventura), Virgilio Gazzolo (Schultz), Carlo Pisacane (Epimeno), Maria Tadeschi (tourist in Vatican), John Bartha (man in flashback), Angelo Boscariol (agressor in flashback), Angelo Casadei (man at confessional), Jud Curtis (young priest), John Stacy (tourist in Vatican), Alessandro Tadeschi (tourist in Vatican)