Una spirale di nebbia (1977)

"Una spirale di nebbia" (1977), directed by Eriprando Visconti and known in English as "A Spiral of Mist," is an Italian thriller that includes several nude scenes.

Martine Brochard (as Lavinia, the nurse):
Appears nude in scenes where she's involved in sexual activities, including a notable moment where she's seen topless with her breasts visible.
Claude Jade (as Maria Teresa):
Features in a shower scene with her husband Duilio Del Prete, where she's seen fully nude or at least topless, humorously putting on a shower cap.

Eleonora Giorgi:
Known for her nude scenes in the film, including one where she sits up naked, showing her breasts.
Duilio Del Prete (as Marcello):
Involves in a shower scene with Claude Jade, where he's also seen completely nude. There's mention of him showing his genitalia in this context.
Stefano Satta Flores (as Police Inspector):
Appears fully nude in scenes, including one where he's seen laying down completely naked, showing full frontal nudity.