"Angeli bianchi... angeli neri" is one of the best results of the collaboration between Piero Umiliani and director Luigi Scattini. Filmed in Brazil, "Angeli bianchi... angeli neri" (also known as "Witchcraft 70") is one of Scattini's most popular mondo films. However in an exagerated way, as was common at the time, the aim of the movie was to document the world of black magic, devil worshipping and pagan rituals. Through the years it has reached the status of "cult movie" along with "Mondo cane" ("A Dog's World") and "Africa addio".