[citation needed] Behind the walls of a secluded convent, the nuns commit sexual acts at night with each other, while living in fear that their Mother Superior may learn of their transgressions.

Credited: Uncredited: The film's working title was La casa del dio sconosciuto (literal translation: "The house of the unknown god").

[1] On the pages preceding the copy of the script deposited at the Ministerio Dello Spettacolo on February 24, 1979, it says that the film is "very loosely inspired by Prosper Mérimée's La Vénus d'Ille before quoting Blaise Pascal's saying, "The last function of reason is to recognize that there are an infinity of things which surpass it".

[1][3] However, the only parallels between the film and Diderot's novel are the general immorality of the clergy, the arrival of an aristocratic novice without vocation at a convent, and the wounded officer.

[3] In the United States, the film was released on June 14, 2005, as Images in a Convent on DVD by Media Blasters in its hard version from which three minutes of Marina Ambrosini's scene of diabolical possession were cut.