Upper class party girl finds herself at an Old Dark House one night, populated by assorted rednecks and bootleggers, many with rape on the mind. The cinematography is beautiful to behold and the directing is incredible. Miriam Hopkins is heartbreaking. The film manages to be far less squalid and misanthropic than Faulkner's source novel, no doubt due to the excising of key elements (e.g. rape by corncob and the willing cuckoldry of the villain) but also because the filmmakers don't appear to actually loathe the title character. And that's one up on Faulkner, so kudos to them.
All that said, still a pretty unpleasant experience.