A story of Sergio Donati & Alberto de Martino, wriiten and adapted for the wide screen by Sergio Donati & Alberto de Martino (with the collaboration of Michael Robson) and ultimately directed by Alberto de Martino.
Produced by Edmondo Amati.
Music by Ennio Morricone.
Filmed in Palatino studios at Lazio, Rome (ITALY), Tunisia & East Sussex, Middlesex, Devon and London (ENGLAND).