Daniele Senatore e Marina Cicogna presentano ; un film di Elio Petri ; produzione Vera Film ; sogeetto e sceneggiatura di Elio Petri e di Ugo Pirro ; règia di Elio Petri
a Metro-Goldwyn-Mayer picture ; producer, Nat Perrin ; screenplay writers, Steve Fisher and Nat Perrin ; story, Stanley Roberts ; director, Edward Buzzell
executive producers, Hunt Baldwin, John Coveny, Greer Shephard, Michael M. Robin ; developed for television by Hunt Baldwin and John Coveny ; written by Hunt Baldwin, John Coveny