A married man (Michael Douglas)'s one night stand comes back to haunt him when that lover (Glenn Close) begins to stalk him and his family.
Apparently when this film came out it had some feminist backlash because it appears to show a career woman as psychotic, while the stay-at-home wife is good and subservient. That is one way to read it, but it would be putting meaning in there that probably was never intended.
This is quite simply someone with mental issues going after another person. It has a bit of a morality tale in there, scaring men off of cheating. But there is not much in it about gender. It simple works better as a psychotic woman rather than a man, because a psychotic man with a knife is pretty mundane.
