Well, given that the film clearly tells a different story than the book, I suppose it's only offence really is to generate sales of the book, which seems to be well-regarded in literary circles for whatever reasons (doesn't appeal to me). I gather it was banned in Britain for a couple of years.
There were a quite few other movies along this storyline of young girls "leading on older men". I recall a Rod Steiger film, where a young female hitch-hiker destroys the life of an "ordinary couple". Claire Bloom was the wife I remember. This film also seemed to revolve around older men being unable to resist the lure of young females - nothing too earth-shattering about that. But the idea that James Mason was portraying a child abuser seems wide of the mark to me.
