Robert Parrish Director Peter Sellers Juan Bautista Actor Britt Ekland Olimpia Segura Actor Rossano Brazzi Carlos Matabosch Actor Adolfo Celi Francisco Carbonell Actor Hattie Jacques Trinity Martinez Actor Ferdy Mayne Silvestre Flores Actor Kenneth Griffith Pepe Gamazo Actor Al Lettieri Eugenio Gomez Actor David R. Schwartz Screenwriter Jerry Gershwin Producer Elliott Kastner Producer Francis Lai Original Music Gerry Turpin Cinematographer John Jympson Film Editing Donald M. Ashton Production Design Elven Webb Art Director Franco Fumagalli Set Decoration