This movie is probably the most unpopular of 1970's French "Emmanuelle" series because it is definitely the least erotic. The sex scenes are all pretty brief and tame (especially compared to its immediate predecessor "Emmanuelle 2"). After actually looking attractive in the first sequel, Sylvia Kristel is back to her tomboy, uber-European look. The supporting female cast meanwhile doesn't begin to compare to the likes of Laura Gemser and Catherine Rivet (the voluptuous Charlotte Alexandra from "Immoral Tales" is featured but is pretty much wasted in a few throwaway scenes). Frankly, the sexiest thing about this movie is actress/singer Jane Birkin's voice in the catchy theme song (dueting with husband Serg Gainsbourg), but she is not actually in the movie.
On the other hand, this is the only "Emmanuelle" movie ever to approach what some might call reality. In this movie the Emmanuelle character actually tires of her boorish, jaded husband and all the menage a trois and swinging affairs with other men that he pushes her into, more for his pleasure than hers. She is taken aback when she sees a young black girl, who they earlier had a threesome with, after she has been beaten by her clueless but jealous husband, and she finds her own husband's latest would-be blonde conquest vapid and unappealing. She begins an affair with a young film director and actually falls in love. Jealously then rears its ugly head, as her husband finds out and tries to sabotage the relationship. I won't give away the ending, but you could probably guess it from the title.
It's rare (and some would say foolhardy)to make a sex film that realistically deals with real-life, and potentially depressing, issues like this. In a way this film kind of marked the end of the "free love" era of the 60's and 70's. That is not to say that this is a good or serious film compared to say "Last Tango in Paris", but for this series. . .well, it's worth seeing if you don't mind trading some of sex for a little bit of reality.