Edwige Fenech was originally cast as Eleanora, but dropped out of the role upon discovering that she was pregnant with her son Edwin Fenech.
When Greta is investigating in the cellar, a print of Dorothea Lange's 'Migrant Mother' can be seen.
Director Silvio Amadio has said that when he was going to film the lesbian scene between Rosalba Neri and Barbara Bouchet, Barbara Bouchet said there was no need for a closed set, but Rosalba Neri insisted on a closed set.
Italian censorship visa # 58802 delivered on 13-11-1971.