This giallo film, directed by Cesare Canevari exists in both softcore and hardcore versions. Archived 2 April at the Wayback Machine. The Principles of Lust. Each version contains unique scenes and was prepared for different markets: A couple become amorous after watching a movie. Archived from the original on 1 January Her and She and Him
Levey exists in both softcore and hardcore XXX version whereas the hardcore scenes were performed by body doubles.
Avildsen shows unsimulated fellatio. Archived 2 August at the Wayback Machine. Archived 21 November at the Wayback Machine. Archived 5 October at the Wayback Machine. There are three French versions of this film by Lucio Fulci: