Probably-lost sexploitation quickie that, despite the IMDb's insistence, does not in any way showcase the talents of Jeff Bragg.
Two bored suburban housewives, neglected by their workaholic husbands, take on a couple of college kids for kicks, then decide to join a wife-swapping club. Complications arise when love, jealousy and resentment arise.
An old acquaintance of newlyweds shows up at their doorstep. They seem glad to see her, but what they don't know is that new guest harbors a deep grudge against them for something that happened years before, and is plotting her revenge.