Dogville (2003)

A woman on the run from the mob is reluctantly accepted in a small Colorado town. In exchange, she agrees to work for them. As a search visits town, she finds out that their support has a price. Yet her dangerous secret is never far away...

This film feels very much like you're watching a play. The reverse fairy tale and flipping of characters is almost comedic, yet there is an underlying quality to its campness that allows any acts of cruelty to seem believable. After getting used to the idea that the whole film is based upon a set with only lines on the floor to represent walls, its easy to accept the levels of depravity that the villagers are willing to sink to. It also adds another aspect to the perversity when you can see neighbors within helping distance, carrying on with their normal lives outside the nonexistent barrier.