I think, given the moody, dark landscape, the pretty self-destructive woman, the dope, the unresolved outrages, this film seemed to be setting viewers up for some score-settling explosion. A Walpurgisnacht where somebody cracks and evens it up once and for all. A discharge of all that rage and tension held in check for so long. I realize this was adapted from a novel, so that limits the options for resolution. But Godfather II, for example, took all of the insults and dissatisfaction building throughout and paid them off --- not pretty but exciting and cinematically satisfaying.