una coproducción Hispano-italiana Sabre Films, Vides Cinematográfica ; una pelicula de Gillo Pontecorvo ; guión, Ugo Pirro, Giorgio Arlorio, Gillo Pontecorvo ; producida por José Sámano ; dirigida por Gillo Pontecorvo
IFC Films ; Pathé!, BBC and Northern Ireland Screen with the participation of Bord Scannán na hÉireann/Irish Film Board presents ; a Big Fish Films/Ruby Films production in association with Element Pictures ; an Oliver Hirschbiegel film ; produced by Eoin O'Callaghan ; screenplay by Guy Hibbert ; directed by Oliver Hirschbiegel