Golddigging Dahl makes her way from the Boston slums to the top of society by using and destroying the lives of every man she meets, only to have karma get her in the end.
Not a very good film, primarily because of a poorly written script. As an astute review by "blanche-2" on IMDb puts it:
"If this film had been a lot worse or a lot better, it could today be a camp classic. Unfortunately it falls in between. Kathy pulls some outrageous stunts, but the script doesn't have enough bite to it. Not only that, it's entirely predictable."
After watching an hour and a half of Dahl's scheming, we are suddenly told what made her this way (she suffered a traumatic event as a teenager). If this had been introduced in any sort of competent way, it would have been thought provoking and changed the tone of the film. Unfortunately it's presented as almost a throwaway gag, and leaves no real impact. Hughes wanted to make a sleazy film, and did; better to have left the moralizing out, and let the film ride a wave of schadenfreude, than to throw in some hasty attempt at 'significance.'
A shame, as the performances are generally good, even with odd character motivations (Goodliffe's spastic nutter) and Dahl being too old by a decade for the role.
Note: Pat Clavin is prominently listed in the opening credits, but I have no idea who she is supposed to be in the film, nor apparently does anyone else. It seems highly likely her role was cut from the final version.