In Evil Hour (2006)

Original title: O Veneno da Madrugada

The old servant and chronicler Dom Sabas tells how his desolate South American town is the scene of a ruthless power struggle. The landowning Assis family, reduced to a widow and son, tries to hold out against the young, despotic mayor. No less effective then actions are anonymous rumors and accusations, which often stir the inhabitants' moves.