Movie - The People Under The Stairs (1991)

First off... Ewww, the two people who we thought were a couple turned out to be brother and sister; and they WERE a couple. Ya, that is real creepy! Secondly, how old is this girl that they are keeping hostage as their daughter? She only looks to be about 12 but the "mother" keeps insisting that the little boy, Fool will influence her into sexual behaviour. This movie really rocked, even though the quality was bad and it looked like they were on a budget.