The fake title sequence in the Italian video is -
Pleins feux sur un voyeur
Crociera erotica ... del piacere
regia Pierre Claude Garnier
That is - Guy Mairesse, Stéphane Macha, Gregory Cernoviz, directed by Pierre Claude Garnier. The first two names are straight actors listed on imdb, as are the director and the title, from 1975.
However, this is a French film of 1980 with some fresh footage linking archive footage from a slightly earlier unidentifed French porn film.
- Cyril Val (bald with goatee)
- Carmelo Petix with a wig
- Patrick Perrin
Males in the archive footage -
- Richard Lemieuvre
- Gabriel Pontello
A brunette (Brigitte Lelaurain) lies on the floor reading a book and masturbating. Three men and a taller slimmer brunette (Maria Catala?) come in. She now reads aloud to them. Evidently it is a book of erotic stories and an orgy develops, intercut with footage supoposedly showing the stories she is reading.
The intercut footage shows Brigitte Verbecq walking in on Nicole Segaud, dressed as a young teen with pigtails. Mutual spanking takes place. Then Richard Lemieuvre walks in and a threesome develops. Then in separate cut aways, we see Gabriel Pontello and Dominique Saint Claire having sex and then Dominique and Lucie Doll. Then these three join the others for an orgy.
In the main part of the film, an all-out fivesome has developed and the book is forgotten.