I am looking for the title of a movie that I saw in the early-mid 90's. There are several scenes, but one of the final scenes is the one I remember the most about.
The main theme of the movie is that a man is receiving calls from a woman who he does not know. She somehow blackmails him, and in one of the last scenes of the movie shows up at his house. She ends up having the man's wife blindfolded on a bed and fuck her with a vibrator, both vaginally and anally, in front of the husband. The wife is unaware of this stranger woman being present, and thinks she is being fucked by her husband. When the wife's blindfold is removed she is initially startled by the woman's presence. Husband and wife are ordered to kiss.
Unfortunately, I do not know the names of any of the performers, which would have helped narrow it down somewhat...