[3] He began exploring other genres and was initially interested in adapting Livia De Stefani's novel Black Grapes.

[3] The original story of Black Grapes involved gangsters, a topic that became popular in Italy after the release of Damiano Damiani's The Day of the Owl.

[3] When approaching him for Black Grapes, Mazzei countered the offer to film an adaptation of La ragazza di nome Giulio.

[3] Screenplay credits on the actual film prints state that Marcello Coscia, Bruno Di Geronimo, Maurio Di Nardo, Francesco Mazzei and Valerii are responsible for the film's screenplay.

[4] Joan Fontaine was originally cast to play Laura, the title character's mother, but she left the set a few days before the end of shooting due to economic disagreements with the producer Francesco Mazzei;[5] she was replaced by Esmeralda Ruspoli and all her scenes had to be reshot.